Aug. 2023, 日本機械学会 機械力学・計測制御部門, 学術業績賞　　　　　　　　　　　　　　　
梶原逸朗

2018, 日本機械学会 機械力学・計測制御部門, 部門功績賞　　　　　　　　　　　　　　　
梶原 逸朗

2017, 日本機械学会, 120周年記念功労者表彰　　　　　　　　　　　　　　　
梶原 逸朗

2016, 可視化情報学会賞, 技術賞　　　　　　　　　　　　　　　
梶原 逸朗

2015, 日本機械学会, 論文賞　　　　　　　　　　　　　　　
梶原 逸朗

2010, 情報ストレージ研究推進機構, 論文賞　　　　　　　　　　　　　　　
梶原 逸朗

2008, 日本機械学会 機械力学・計測制御部門, パイオニア賞　　　　　　　　　　　　　　　
梶原 逸朗

2005, 日本機械学会 機械力学・計測制御部門, 部門貢献表彰　　　　　　　　　　　　　　　
梶原 逸朗, Japan

1989, 日本機械学会, 論文賞　　　　　　　　　　　　　　　
梶原 逸朗, Japan

1984, 日本機械学会, 畠山賞　　　　　　　　　　　　　　　
梶原 逸朗, Japan

Sparse Identification of Nonlinear Dynamics With Library Optimization Mechanism: Recursive Long-Term Prediction Perspective
Ansei Yonezawa, Heisei Yonezawa, Shuichi Yahagi, Itsuro Kajiwara, Shinya Kijimoto, Hikaru Taniuchi, Kentaro Murakami
IEEE Transactions on Cybernetics, 1, 14, Institute of Electrical and Electronics Engineers (IEEE), Jan. 2026, [Peer-reviewed]
English, Scientific journal

Model-based controller assisted domain randomization for transient vibration suppression of nonlinear powertrain system with parametric uncertainty
Heisei Yonezawa, Ansei Yonezawa, Itsuro Kajiwara
Mechanical Systems and Signal Processing, 241, 113570, 1, 25, Elsevier BV, Dec. 2025, [Peer-reviewed], [Last author]
English, Scientific journal

One-shot Data-driven Tuning Approach for Fractional-order Controller Based on Fictitious Reference Signal and Total Variation Regularization
Ansei Yonezawa, Heisei Yonezawa, Shuichi Yahagi, Itsuro Kajiwara, Shinya Kijimoto
International Journal of Control, Automation and Systems, 23, 11, 3238, 3247, Springer Science and Business Media LLC, 04 Nov. 2025, [Peer-reviewed]
English, Scientific journal

Electroadhesive dielectric elastomer actuator for vibration excitation of mechanical structure
Toshiki Hiruta, Junya Ohno, Naoki Hosoya, Shingo Maeda, Itsuro Kajiwara, Kentaro Takagi
Sensors and Actuators A: Physical, 117274, Elsevier BV, Nov. 2025, [Peer-reviewed]
English, Scientific journal

Electric-power free impulse point sound source generation system with bubble wrap bursting phenomena for simplified non-destructive testing
Shuichi Yahagi, Toshiki Shimizu, Seiya Inadera, Itsuro Kajiwara, Naoki Hosoya
Measurement, 258, Part C, 119192, Elsevier BV, Oct. 2025, [Peer-reviewed]
English, Scientific journal

Simple Controller Design to Achieve Iso-Damping Robustness: Noniterative Data-Driven Approach Based on Fractional-Order Reference Model
Ansei Yonezawa, Heisei Yonezawa, Shuichi Yahagi, Itsuro Kajiwara
IEEE Transactions on Systems, Man, and Cybernetics: Systems, 1, 14, Institute of Electrical and Electronics Engineers (IEEE), Aug. 2025, [Peer-reviewed], [Last author]
English, Scientific journal

Fractional‐order controller tuning via minimization of integral of time‐weighted absolute error without multiple closed‐loop tests
Ansei Yonezawa, Heisei Yonezawa, Shuichi Yahagi, Itsuro Kajiwara, Shinya Kijimoto
Asian Journal of Control, 1, 14, Wiley, 17 Jul. 2025, [Peer-reviewed]
English, Scientific journal, Abstract

This study presents a non‐iterative tuning technique for a linear fractional‐order (FO) controller, based on the integral of the time‐weighted absolute error (ITAE) criterion. Minimizing the ITAE is a traditional approach for tuning FO controllers. This technique reduces the over/undershoot and suppresses the steady‐state error. In contrast to conventional approaches of ITAE‐based controller tuning, the proposed approach does not require multiple closed‐loop experiments or model‐based simulations to evaluate the ITAE. The one‐shot input/output data is collected from the controlled plant. A fictitious reference signal is defined on the basis of the collected input and output signal, which enables us to evaluate the closed‐loop response provided by the arbitrary controller parameters. To avoid repeated experiments that are necessary in the conventional approach, we reformulate the ITAE minimization problem using the fictitious reference signal. The desired FO controller parameters minimizing the ITAE are obtained by solving the optimization problem that is based on the fictitious reference signal. The validity of the proposed approach is demonstrated by a numerical study. The avoidance of repeated experiments significantly reduces the development cost of linear FO controllers, thereby facilitating their practical application.

Model-free parameter tuning with continuous genetic algorithm: Application to virtual controlled object-based active vibration controller
Heisei Yonezawa, Ansei Yonezawa, Itsuro Kajiwara
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, (First published online), 1, 12, SAGE Publications, 28 Mar. 2025, [Peer-reviewed], [Last author]
English, Scientific journal, Active vibration control is a powerful approach to provide higher damping effects over a broad range of frequencies. However, most of them generally involve a modeling process of a controlled structure, complicating the controller design. The main contribution of this study is to present a novel tuning scheme of a model-free active oscillation controller based on continuous genetic algorithm (CGA), which can simplify a controller design process by eliminating the need for plant modeling. The model-free controller is developed using a virtual controlled object (VCO) as its foundation. VCO makes it possible to construct an active damping controller without knowing any specifications of a real controlled structure. In the offline tuning of the design variables of the controller, we use a reference-controlled object (RCO) - a single-degree-of-freedom (SDOF) structure defined by the designer - to assess the damping level instead of the actual controlled structure model. This evaluation is feasible due to the robustness of the VCO-based design, which accommodates variations in the controlled object structures. The application of the CGA, which has the global search ability, enables automatically specifying the optimal parameter values without costly trial-and-error works. The effectiveness of the auto-optimized model-free damping controller is demonstrated through numerical examples across different mechanical systems, with comparisons made to a trial-and-error-tuned controller. The main finding is that the controller can reduce the vibration amplitudes even though plant modeling of the actual controlled objects is not accompanied at all. As the representative results, the resonance peaks of two different cantilever plates were suppressed by 14.38 and 27.13 dB in the low-frequency band. The detailed-specification-independent nature provided by the model-free design makes it possible to apply the resultant controller to various structures because the robustness is enforced.

Sparse Identification and Nonlinear Model Predictive Control for Diesel Engine Air Path System
Shuichi Yahagi, Hiroki Seto, Ansei Yonezawa, Itsuro Kajiwara
International Journal of Control, Automation and Systems, 23, 2, 620, 629, Springer Science and Business Media LLC, 05 Feb. 2025, [Peer-reviewed], [Last author]
English, Scientific journal

Active Vibration Control with a Combination of Virtual Controlled Object-Based Model-Free Design and Fuzzy Sliding Mode Technique
Heisei Yonezawa, Ansei Yonezawa, Itsuro Kajiwara
Journal of Vibration Engineering & Technologies, 13, 2, 1, 19, Springer Science and Business Media LLC, 24 Jan. 2025, [Peer-reviewed], [Last author]
English, Scientific journal

Geometric and dynamic error compensation of dual-drive machine tool based on mechanism-data hybrid method
Qi Liu, Hong Lu, Heisei Yonezawa, Ansei Yonezawa, Itsuro Kajiwara, Tao Jiang, Jiji He
Mechanical Systems and Signal Processing, 224, 112041, 1, 26, Elsevier BV, 01 Jan. 2025, [Peer-reviewed]
English, Scientific journal

Experimental verification of model-free active damping system based on virtual controlled object and fuzzy sliding mode control
Heisei Yonezawa, Ansei Yonezawa, Itsuro Kajiwara
Mechanical Systems and Signal Processing, 224, 111961, 1, 22, 01 Jan. 2025, [Peer-reviewed], [Last author]
English, Scientific journal

Simultaneous Perturbation Algorithm Tuned Oscillation Controller for Automotive Driveline With Kalman Filtering-Based Compensation for Dead-Zone Nonlinearity
Heisei Yonezawa, Ansei Yonezawa, Itsuro Kajiwara
ASME 2024 International Mechanical Engineering Congress and Exposition, 5, Paper No: IMECE2024-143386, 1, 9, American Society of Mechanical Engineers, 17 Nov. 2024, [Peer-reviewed], [Last author]
English, International conference proceedings, Abstract

Advanced active control algorithms have addressed the reduction of vehicle driveline oscillations with the purpose of improving component lifespan and drivability. However, the majority of the current works require the important controller parameters to be determined subjectively, placing a significant burden on designers to make adjustments. This study offers an effective model-based driveline vibration controller tuning technique that specifically takes nonlinear backlash’s negative effects into account. Initially, a driveline model is created that incorporates a dead-zone impact of backlash. To reduce a driveline’s low-frequency resonance, a baseline controller reflecting H2 control theory is used. To handle the backlash nonlinearity, the controller is coupled with a control mode switching-based compensation. For identifying whether the system is in the backlash mode or the contact mode, the state vector is estimated by a Kalman filter. The Kalman filter-based state estimation enables switching of the two control modes systematically and stably. A computationally efficient approach, namely the simultaneous perturbation stochastic approximation (SPSA), finds out the best values of their significant design parameters that are incorporated in the active control system. Multiple comparative simulations confirm the effectiveness of the proposed active oscillation controller adjusted by the SPSA. The resilience is assessed for several patterns of driveline dynamics variations. Consequently, it is discovered that the improved vibration suppression performance is stemming from the backlash compensation.

Efficient Controller Tuning Technique for Model-Free Active Vibration Control Based on Virtual Controlled Object
Ansei Yonezawa, Heisei Yonezawa, Itsuro Kajiwara
ASME 2024 International Mechanical Engineering Congress and Exposition, 5, Paper No: IMECE2024-143389, 1, 9, American Society of Mechanical Engineers, 17 Nov. 2024, [Peer-reviewed], [Last author]
English, International conference proceedings, Abstract

Vibration control based on a virtual controlled object (VCO) is a simple and practical model-free active vibration suppression strategy. To utilize VCO-based model-free control, controller tuning plays the critical role. This study presents a computationally efficient tuning strategy for the VCO-based model-free active vibration controller. A state equation for model-free controller design is derived based on an actuator model and the VCO. The parameters of the VCO are determined so as to achieve the vibration suppression in the predetermined controlled frequency band. Then, we introduce the reference controlled object (RCO). The control performance of the VCO-controller is evaluated through the vibration control simulation for the RCO. Iteratively executing the vibration suppression simulation for the RCO, the suitable design parameters of the VCO-controller are searched on the basis of the simultaneous perturbation stochastic approximation (SPSA) algorithm. The nonlinear parametrization technique enhances the tuning efficiency. The validity of the tuning scheme is demonstrated by applying it to the design problem of the VCO-based model-free linear quadratic regulator (LQR). The numerical simulations verify the applicability of the VCO-LQR tuned by the proposed approach to wide variety of controlled objects other than the RCO.

Experimental validation of adaptive grey wolf optimizer-based powertrain vibration control with backlash handling
Heisei Yonezawa, Ansei Yonezawa, Itsuro Kajiwara
Mechanism and Machine Theory, 203, 105825, 1, 22, Elsevier BV, Nov. 2024, [Peer-reviewed], [Last author]
English, Scientific journal

One-Shot Data-Driven Design for Feedback Controller and Reference Model With BIBO Stability
Shuichi Yahagi, Itsuro Kajiwara
IEEE Access, 12, 147882, 147893, Institute of Electrical and Electronics Engineers (IEEE), Oct. 2024, [Peer-reviewed], [Last author]
English, Scientific journal

Compensation approach for discretization constraint in automobile powertrain control and its performance evaluation
Yoshifusa ITO, Masaki HIRATA, Heisei YONEZAWA, Shota SATO, Takashi HATANO, Chiaki NISHIDOME, Itsuro KAJIWARA
Transactions of the JSME, 1, 20, Japan Society of Mechanical Engineers, Aug. 2024, [Peer-reviewed], [Last author]
Japanese, Scientific journal

Practical one-shot data-driven design of fractional-order PID controller: Fictitious reference signal approach
Ansei Yonezawa, Heisei Yonezawa, Shuichi Yahagi, Itsuro Kajiwara
ISA Transactions, 152, 208, 216, Elsevier BV, Jul. 2024, [Peer-reviewed], [Last author]
English, Scientific journal

Experimental verification of active oscillation controller for vehicle drivetrain with backlash nonlinearity based on norm-limited SPSA
Heisei Yonezawa, Ansei Yonezawa, Itsuro Kajiwara
Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics, (First published online), 1, 16, SAGE Publications, 01 Apr. 2024, [Peer-reviewed], [Last author]
English, Scientific journal, To address vehicle drivetrain vibrations that cause discomfort and poor drivability, this study proposes a new active damping strategy with simple backlash compensation based on the simultaneous perturbation stochastic approximation (SPSA) with norm-limited update vector. First, an experimental device developed for a simplified drivetrain mechanism is demonstrated. A mechanism for reproducing both the contact mode and the backlash mode is included in the device. For the contact mode, a model-based [Formula: see text] controller is employed as the baseline damping strategy. Further, to mitigate the backlash effect, a simple algorithm based on mode-switching-based compensation is used with the [Formula: see text] controller. In particular, for the critical controller parameters, this article presents a systematic design approach to search for their optimal values. The key parameters, which are needed for the backlash and contact mode controllers, are simultaneously auto-tuned using norm-limited update vector-based SPSA, which ensures the stability in the iterative tuning. The novelty of this study is that both the backlash mode controller and the contact mode controller are simultaneously optimized by the improved version of SPSA, thus realizing a comprehensive auto-tuning design of an active drivetrain damping system. Finally, the active controller is experimentally verified using the actual test device. Comparative studies show that the proposed approach significantly reduces drivetrain vibrations and is robust against fluctuations in the backlash.

Final state control-based active compensation for backlash in vibration suppression of automobile powertrain
Masaki Hirata, Heisei Yonezawa, Ansei Yonezawa, Itsuro Kajiwara
International Journal of Control, (First published online), 1, 13, Informa UK Limited, 01 Apr. 2024, [Peer-reviewed], [Last author, Corresponding author]
English, Scientific journal

Simple Inverse Kinematics Computation Considering Joint Motion Efficiency
Ansei Yonezawa, Heisei Yonezawa, Itsuro Kajiwara
IEEE Transactions on Cybernetics, 54, 9, 4903, 4914, Institute of Electrical and Electronics Engineers (IEEE), 28 Mar. 2024, [Peer-reviewed], [Last author]
English, Scientific journal

Grey wolf optimization tuned drivetrain vibration controller with backlash compensation strategy using time-dependent-switched Kalman filter
Heisei Yonezawa, Ansei Yonezawa, Itsuro Kajiwara
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, (First published online), 1, 14, SAGE Publications, 24 Mar. 2024, [Peer-reviewed], [Last author]
English, Scientific journal, To improve the performance and durability of vehicle components, efforts have been made to reduce driveline oscillations using advanced active control algorithms. However, existing methods often rely on subjective parameter adjustments, which can be burdensome for designers. This study introduces an effective tuning algorithm for a driveline vibration controller that accounts for nonlinear backlash effects. Initially, a driveline dynamics model is developed to focus on transient oscillations resulting from changes in driving force and the presence of nonlinear backlash. The backlash impact is incorporated into the model through a discontinuous dead-zone region. Two operational dynamics, which are the contact mode and the backlash mode, are considered. A dynamic output feedback [Formula: see text] controller is designed as a baseline controller to mitigate low-frequency resonance in the driveline. A solution for managing the nonlinear backlash challenges is introduced, involving the use of a simple control mode switching algorithm in conjunction with the controller. This algorithm relies on a time-dependent-switched Kalman filter. Additionally, the optimal settings for the parameters needed by the mode-switching algorithm are autonomously determined using the grey wolf optimizer (GWO). The proposed active controller can be implemented in real vehicles by using an on-vehicle acceleration sensor and electronic control unit (ECU). In a simulation environment, the vehicle body vibration is online fed back to the resultant controller, and an actuator is supposed to apply control commands to the driveline. The effectiveness of this newly proposed active controller is confirmed through comparative tests, revealing the superior vibration control.

Active vibration control for thin curved structures using dielectric elastomer actuators
Toshiki Hiruta, Hiroki Ishihara, Naoki Hosoya, Shingo Maeda, Kentaro Takagi, Itsuro Kajiwara
Smart Materials and Structures, IOP Publishing, 12 Feb. 2024, [Peer-reviewed], [Last author]
English, Scientific journal, Abstract

This study proposes an active vibration control technique for pipe structures using dielectric elastomer actuators (DEAs). Vibrations in pipe structures must be eliminated to improve their mechanical reliability, and active vibration control techniques can be applied for effective vibration suppression. Soft actuators, which can completely fit pipe structures with complex-shaped surfaces, are required to transfer their vibration reduction forces to the target. DEA is suitable for this kind of target structure because DEA is characterized by high stretchability, flexibility, large deformation, and fast response. By applying the DEA, the effectiveness of vibration control for the pipe structure was experimentally demonstrated. A stacked DEA was fabricated and attached to the target structure. Its shape and placement were determined based on a modal analysis of the target structure. A control system, in which the controller for the active vibration control was designed based on H_∞ control theory, was composed. The vibration control experiment was conducted using the controller with a digital control system, and the vibration reduction effect was evaluated based on the frequency response of the target pipe structure.

Data-driven design of model-free control for reference model tracking based on an ultra-local model: Application to vehicle yaw rate control
Shuichi Yahagi, Itsuro Kajiwara
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 1, 13, SAGE Publications, 09 Jan. 2024, [Last author]
English, Scientific journal, Lateral vehicle dynamics control is important for autonomous driving. This paper presents a data-driven design of model-referenced model-free control (DD-MR-MFC) based on an ultra-local model for vehicle yaw rate control. The characteristics of lateral vehicle dynamics systems depend on vehicle velocities and weights. For this system, fixed proportional–integral–derivative (PID) controllers cannot provide the desired control performance. Additionally, although model-based control can be applied to lateral vehicle dynamics, the modeling process is time-consuming. To efficiently design controllers that can realize the desired performance, we adopt a model-free approach. In this study, the control law of practical MR-MFC is derived by extending the traditional MFC based on an ultra-local model and using a data-driven design method. The MFC approach can be applied to nonlinear systems with few parameters, and the data-driven method provides optimized parameters from single-experiment time-series data without the need for repeated experiments and system model to be controlled. Additionally, the processing cost is considerably low because the controller parameter can be obtained using least-square methods. The effectiveness of the proposed method is verified using a multibody vehicle simulator. The yaw rate tracking performance is examined under different velocities and loads. Results showed that the root-mean-square error of the proposed method is approximately 1/100th of that when using a fixed PID controller optimized using a data-driven method.

Novel powertrain vibration controller with six rules-based fuzzy inference for time-fluctuated control period
Heisei Yonezawa, Ansei Yonezawa, Itsuro Kajiwara
IEEE Access, 12, 11972, 11986, Institute of Electrical and Electronics Engineers (IEEE), Jan. 2024, [Peer-reviewed], [Last author]
English, Scientific journal

Improved Six Rules-Based Fuzzy Compensation for Time-Varying Control Cycle in Active Powertrain Oscillation Reduction
Heisei Yonezawa, Ansei Yonezawa, Itsuro Kajiwara
ASME 2023 International Mechanical Engineering Congress and Exposition, 6, Paper No: IMECE2023-113274, American Society of Mechanical Engineers, 29 Oct. 2023, [Peer-reviewed], [Last author]
English, International conference proceedings, Abstract

To prevent the degradations of comfort and drivability, this research presents an improved fuzzy-logic-based active oscillation control algorithm for an automotive powertrain with a time-fluctuated control cycle limitation. A sampled-data controller is firstly employed as the base control, and a model-predictive algorithm is implemented to compute the optimal control signals at a periodic time interval. However, the update timing of the real control input fluctuates over time due to the powertrain actuator limitation. The fuzzy reasoning is applied to tackle the time-fluctuated control cycles. In the present method, the update timing is translated into some fuzzy sets. Moreover, the periodic control signals by the sampled-data controller are combined as fuzziness, resulting in linguistic fuzzy sets. Six fuzzy rules are created based on those fuzzy sets to derive feasible control inputs at the fluctuated updating timings. The control strategy is tested via simulations with a powertrain oscillation model. The compensation effect is observed for the two patterns of the fluctuated control cycles. In addition, the test results confirm the improvement of the oscillation reduction over a conventional control algorithm.

Experimental Comparison of Model-Free Vibration Control Based on Virtual Controlled Object and Model-Based Control: Robustness to Characteristic Changes in Actual Controlled Object
Ansei Yonezawa, Heisei Yonezawa, Itsuro Kajiwara
ASME 2023 International Mechanical Engineering Congress and Exposition, 6, Paper No: IMECE2023-112871, American Society of Mechanical Engineers, 29 Oct. 2023, [Peer-reviewed], [Last author]
English, International conference proceedings, Abstract

Model-free active vibration control based on a virtual controlled object (VCO) has attracted a great deal of attention due to its simplicity. This study experimentally compares VCO-based model-free vibration control with model-based control in terms of the robustness to characteristic changes in an actual controlled object. The VCO is designed so as to achieve model-free vibration suppression in the designated frequency band. A state equation for designing a model-free vibration controller is constructed using only the actuator model and the VCO. The VCO-based model-free controller is designed based on the mixed H2/H∞ synthesis for the state equation. The model-based mixed H2/H∞ controller is designed based on the mathematical model of a both ends supported plate (BESP). The VCO-based and model-based controllers are tuned through vibration control experiment so that both controllers provide the same vibration reduction effects for the BESP. Then these controllers are applied to a vibration control experiment for a cantilever plate which is totally different from the BESP. As a result, the VCO-controller exhibits a good vibration suppression for the cantilever while the model-based one totally fails, revealing the advantage of the VCO-approach over the model-based strategy in the viewpoint of the robustness.

Data-Driven Design for Model-Referenced Model-Free Controller
Shuichi Yahagi, Itsuro Kajiwara
2023 23rd International Conference on Control, Automation and Systems (ICCAS), No. TuB2-2, IEEE, 17 Oct. 2023, [Peer-reviewed], [Last author]
English, International conference proceedings

Efficient parameter tuning to enhance practicability of a model-free vibration controller based on a virtual controlled object
Ansei Yonezawa, Heisei Yonezawa, Itsuro Kajiwara
Mechanical Systems and Signal Processing, 200, 110526, 110526, 110526, Elsevier BV, Oct. 2023, [Peer-reviewed], [Last author, Corresponding author]
English, Scientific journal

Efficient Tuning Scheme of Mode-Switching-Based Powertrain Oscillation Controller Considering Nonlinear Backlash
Heisei Yonezawa, Ansei Yonezawa, Itsuro Kajiwara
IEEE Access, 11, 93935, 93947, Institute of Electrical and Electronics Engineers (IEEE), Sep. 2023, [Peer-reviewed], [Last author]
English, Scientific journal

Experimental verification of active damping of powertrain vibrations with simple fuzzy logic compensation for time-varying control period
Heisei Yonezawa, Ansei Yonezawa, Takashi Hatano, Shigeki Hiramatsu, Chiaki Nishidome, Itsuro Kajiwara
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 095440702311781, 1, 10, SAGE Publications, 02 Jun. 2023, [Peer-reviewed], [Last author]
English, Scientific journal, To ensure comfortability and lifetime of components, transient vibrations in a vehicle powertrain must be suppressed. This study proposes a novel active vibration control strategy with straightforward fuzzy inference compensation for time-fluctuations of control periods of engines used as actuators. First, a model prediction algorithm including a sampled-data controller (SDC) is applied for addressing the maximal phase lag of the control input caused by the fluctuated control period. Fluctuated renewal timings of the control input that are deviated from those of the periodical operated SDC are defined by fuzzy sets. These fuzzy sets are expressed as “Nearly past timing” and “Nearly future timing.” Using a human-intuition-like fuzzy compensation with only four inference rules, unknown control inputs at fluctuated update timings are reasonably determined from such fuzzy sets and periodical control signals given by the SDC. Experiments using an actual test device are performed to investigate the damping performance of the proposed control scheme. The experimental tests demonstrate that the novel active damping strategy significantly reduces transient vibrations despite the fluctuated control period. Moreover, several different test conditions newly reveal the robustness of the fuzzy compensation against fluctuations of variable regions in the control periods.

Noniterative data-driven gain-scheduled controller design based on fictitious reference signal
Shuichi Yahagi, Itsuro Kajiwara
IEEE Access, 1, 12, Institute of Electrical and Electronics Engineers (IEEE), Jun. 2023, [Peer-reviewed], [Last author]
English, Scientific journal

Grey-Wolf-Optimization-Algorithm-Based Tuned P-PI Cascade Controller for Dual-Ball-Screw Feed Drive Systems
Qi Liu, Hong Lu, Heisei Yonezawa, Ansei Yonezawa, Itsuro Kajiwara, Ben Wang
Mathematics, 11, 10, 2259, 2259, MDPI AG, 11 May 2023, [Peer-reviewed]
English, Scientific journal, Dual-ball-screw feed drive systems (DBSFDSs) are designed for most high-end manufacturing equipment. However, the mismatch between the dynamic characteristic parameters (e.g., stiffness and inertia) and the P-PI cascade control method reduces the accuracy of the DBSFDSs owing to the structural characteristic changes in the motion. Moreover, the parameters of the P-PI cascade controller of the DBSFDSs are always the same even though the two axes have different dynamic characteristics, and it is difficult to tune two-axis parameters simultaneously. A new application of the combination of the grey wolf optimization (GWO) algorithm and the P-PI cascade controller is presented to solve these problems and enhance the motion performance of DBSFDSs. The novelty is that the flexible coupling model and dynamic stiffness obtained from the motor current can better represent the two-axis coupling dynamic characteristics, and the GWO algorithm is used to adjust the P-PI controller parameters to address variations in the positions of the moving parts and reflect characteristic differences between the two axes. Comparison of simulation and experimental results validated the superiority of the proposed controller over existing ones in practical applications, showing a decrease in the tracking error of the tool center and non-synchronization error of over 34% and 39%, respectively.

A method of testing pear fruit firmness with dielectric elastomer actuator excitation
Toshiki Hiruta, Kaishi Sasaki, Naoki Hosoya, Shingo Maeda, Kentaro Takagi, Itsuro Kajiwara
Electroactive Polymer Actuators and Devices (EAPAD) XXV, 12482, 41, 48, SPIE, 28 Apr. 2023, [Peer-reviewed], [Last author]
English, International conference proceedings

Experimental study of model-free vibration control based on a virtual controlled object considering parameter uncertainty of actuator
Ansei Yonezawa, Heisei Yonezawa, Itsuro Kajiwara
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, (published online), SAGE Publications, 21 Dec. 2022, [Peer-reviewed], [Last author, Corresponding author]
English, Scientific journal, This study experimentally verifies robustness of a model-free vibration controller based on a virtual controlled object (VCO) considering parametric uncertainty of actuator. A proof-mass actuator, which can be modeled as a single-degree-of-freedom (SDOF) system, is used. A VCO, which is defined as an SDOF structure, is introduced between a real controlled object and the actuator model. The parameters of the VCO are determined so as to achieve model-free vibration control. A state equation to derive the model-free controller is constructed using the two-degree-of-freedom (2DOF) structure composed of the actuator model and the VCO. The parametric uncertainty of the actuator is quantitatively characterized in the 2DOF structure. The mixed [Formula: see text] control theory is used to design a model-free controller. The vibration suppression performance and robustness to the actuator uncertainty of the proposed method are validated by experiments. Simulation studies are also conducted to enhance the validity of the experimental results. As a result, the proposed damping method exhibits good damping performance and strong robustness to the actuator uncertainty and characteristic changes in controlled object.

Active Reduction of Transient Driveline Oscillations with Fuzzy Update Timings of Control Input
Heisei Yonezawa, Ansei Yonezawa, Takashi Hatano, Shigeki Hiramatsu, Chiaki Nishidome, Itsuro Kajiwara
2022 10th International Conference on Control, Mechatronics and Automation (ICCMA), 108, 115, IEEE, 09 Nov. 2022, [Peer-reviewed], [Last author]
English, International conference proceedings

Noise Tolerance of Online Self-Tuning Mechanism for Model-Free Vibration Controller Based on a Virtual Controlled Object
Ansei Yonezawa, Heisei Yonezawa, Itsuro Kajiwara
2022 10th International Conference on Control, Mechatronics and Automation (ICCMA), 88, 93, IEEE, 09 Nov. 2022, [Peer-reviewed], [Last author]
English, International conference proceedings

Two-Degree-of-Freedom Controller Design Based on a Data-Driven Estimation Approach
Tatsunari Sakai, Shuichi Yahagi, Itsuro Kajiwara
IEEE Access, 10, 120475, 120491, Institute of Electrical and Electronics Engineers (IEEE), Nov. 2022, [Peer-reviewed], [Last author]
English, Scientific journal

Fuzzy-reasoning-based robust vibration controller for drivetrain mechanism with various control input updating timings
Heisei Yonezawa, Ansei Yonezawa, Takashi Hatano, Shigeki Hiramatsu, Chiaki Nishidome, Itsuro Kajiwara
Mechanism and Machine Theory, 175, 104957, 104957, Elsevier BV, Sep. 2022, [Peer-reviewed], [Last author, Corresponding author]
English, Scientific journal

Non-Iterative Data-Driven Tuning of Model-Free Control Based on an Ultra-Local Model
Shuichi Yahagi, Itsuro Kajiwara
IEEE Access, 10, 72773, 72784, Institute of Electrical and Electronics Engineers (IEEE), Jul. 2022, [Peer-reviewed], [Last author]
English, Scientific journal

Direct data-driven tuning of look-up tables for feedback control systems
Shuichi Yahagi, Itsuro Kajiwara
IEEE Control Systems Letters, 1, 6, Institute of Electrical and Electronics Engineers (IEEE), Jun. 2022, [Peer-reviewed], [Last author]
English, Scientific journal

Vibration control for various structures with time-varying properties via model-free adaptive controller based on virtual controlled object and SPSA
Ansei Yonezawa, Heisei Yonezawa, Itsuro Kajiwara
Mechanical Systems and Signal Processing, 170, 108801, 108801, Elsevier BV, May 2022, [Peer-reviewed], [Last author, Corresponding author]
English, Scientific journal

Stability Improvement of Model-Free Control Based on a Virtual Structure Against the Resonance of a Proof-Mass Actuator
Yuto Sato, Heisei Yonezawa, Ansei Yonezawa, Itsuro Kajiwara
Journal of Vibration Engineering & Technologies, (published online), 1, 14, 08 Feb. 2022, [Peer-reviewed], [Last author, Corresponding author]
English, Scientific journal

Parameter tuning technique for a model-free vibration control system based on a virtual controlled object
Ansei Yonezawa, Heisei Yonezawa, Itsuro Kajiwara
Mechanical Systems and Signal Processing, 165, 108313, 1, 18, Feb. 2022, [Peer-reviewed], [Last author, Corresponding author]
English, Scientific journal

Measurements of S0 mode Lamb waves using a high-speed polarization camera to detect damage in transparent materials during non-contact excitation based on a laser-induced plasma shock wave
Naoki Hosoya, Tsubasa Katsumata, Itsuro Kajiwara, Takashi Onuma, Atsushi Kanda
Optics and Lasers in Engineering, 148, 106770, 1, 10, Elsevier BV, Jan. 2022, [Peer-reviewed]
English, Scientific journal

Firmness evaluation of postharvest pear fruit during storage based on a vibration experiment technique using a dielectric elastomer actuator
Toshiki Hiruta, Kaishi Sasaki, Naoki Hosoya, Shingo Maeda, Itsuro Kajiwara
Postharvest Biology and Technology, 182, 111697, 1, 8, Elsevier BV, Dec. 2021, [Peer-reviewed], [Last author]
English, Scientific journal

Vibration Control System Construction Method without Controlled Object Modeling　　　　　　　　　　　　　　　
Ansei Yonezawa, Heisei Yonezawa, Itsuro Kajiwara
Proceedings of the 9th International Conference on Control, Mechatronics and Automation (ICCMA2021), M1-0038, Nov. 2021, [Peer-reviewed], [Last author]
English, International conference proceedings

Experimental Verification of Model-Free Vibration Control Technique Based on a Virtual Controlled Object Considering Actuator Parameter Uncertainty
Ansei Yonezawa, Heisei Yonezawa, Itsuro Kajiwara
Proceedings of International Mechanical Engineering Congress & Exposition (IMECE2021), 095440622211408, Paper: 69100, (published online), SAGE Publications, Nov. 2021, [Peer-reviewed], [Last author]
English, International conference proceedings, This study experimentally verifies robustness of a model-free vibration controller based on a virtual controlled object (VCO) considering parametric uncertainty of actuator. A proof-mass actuator, which can be modeled as a single-degree-of-freedom (SDOF) system, is used. A VCO, which is defined as an SDOF structure, is introduced between a real controlled object and the actuator model. The parameters of the VCO are determined so as to achieve model-free vibration control. A state equation to derive the model-free controller is constructed using the two-degree-of-freedom (2DOF) structure composed of the actuator model and the VCO. The parametric uncertainty of the actuator is quantitatively characterized in the 2DOF structure. The mixed [Formula: see text] control theory is used to design a model-free controller. The vibration suppression performance and robustness to the actuator uncertainty of the proposed method are validated by experiments. Simulation studies are also conducted to enhance the validity of the experimental results. As a result, the proposed damping method exhibits good damping performance and strong robustness to the actuator uncertainty and characteristic changes in controlled object.

Vibration control of membrane structures using multiple dielectric elastomer actuators　　　　　　　　　　　　　　　
Thosiki Hiruta, Hiroki Ishihara, Naoki Hosoya, Shingo Maeda, Itsuro Kajiwara
Proceedings of the 21st International Conference on Control, Automation and Systems, FB5-1, 1932, 1936, Oct. 2021, [Peer-reviewed], [Last author]
English, International conference proceedings

Direct tuning of PID controller and reference model with input constraint
Shuichi Yahagi, Itsuro Kajiwara
Proceedings of the 21st International Conference on Control, Automation and Systems, TC3-2, 1424, 1429, Oct. 2021, [Peer-reviewed], [Last author]
English, International conference proceedings

Direct tuning method of gain‐scheduled controllers with the sparse polynomials function
Shuichi Yahagi, Itsuro Kajiwara
Asian Journal of Control, (published online), 1, 16, Wiley, 18 Aug. 2021, [Peer-reviewed], [Last author]
English, Scientific journal

Direct tuning of gain-scheduled controller for electro-pneumatic clutch position control
Shuichi Yahagi, Itsuro Kajiwara
Advances in Mechanical Engineering, 13, 8, 1, 12, SAGE Publications, Aug. 2021, [Peer-reviewed], [Last author]
English, Scientific journal, This study proposes a gain-scheduled controller with direct tuning for the position control of a pneumatic clutch actuator that is installed in heavy-duty trucks. Pneumatic clutch actuators are highly nonlinear systems and cannot be easily controlled. Industries require a simple controller design that is easy to understand and requires few trial-and-error calibrations. Therefore, we adopted a gain-scheduled proportional integral derivative (PID) control law, which is a well-known and easy-to-understand nonlinear control method. In this approach, a gain scheduler is expressed using polynomials composed of coefficient parameters and controlled object states. The unknown coefficient parameters of the polynomials are directly tuned from the controlled object input/output data without having to use a controlled object model. The proposed controller design procedure is simple and does not require system identification or trial-and-error tuning. The effectiveness of the proposed method is verified by an experiment using an actual vehicle. The experimental results confirm the effectiveness of the proposed method for the position control of pneumatic clutch actuators.

Experimental evaluation of frequency response and firmness of apples based on an excitation technique using a dielectric elastomer actuator
Toshiki Hiruta, Naoki Hosoya, Shingo Maeda, Itsuro Kajiwara
Sensors and Actuators A: Physical, 330, 112830, 1, 8, Elsevier BV, May 2021, [Peer-reviewed], [Corresponding author]
English, Scientific journal

Direct tuning of the data-driven controller considering closed-loop stability based on a fictitious reference signal
Shuichi Yahagi, Itsuro Kajiwara
Measurement and Control, 54, 5-6, 1026, 1042, SAGE Publications, 29 Apr. 2021, [Peer-reviewed], [Last author, Corresponding author]
English, Scientific journal, The direct tuning of controller parameters, which is based on data-driven control, has been attracting considerable attention because of the ease of its control system design. In practical use, it is important to consider the stability of the closed-loop system and model matching with few design parameters. In this study, we propose a direct tuning method based on a fictitious reference signal that considers the bounded-input bounded-output (BIBO) and model matching without repeating experiments. The proposed method includes two steps. In the first step, the BIBO stability is satisfied. The pole information is lost in the cost function of the conventional method using a fictitious reference signal. Then, we derive a new cost function that can prevent the loss of the pole information. This provides controller parameters that can stabilize the closed-loop system. The model matching between the reference model and the closed-loop system is considered in the second step. When model matching is achieved, the characteristics of the reference model almost match those of the closed-loop system, including the gain and phase margins. The parameters of the reference model are automatically tuned to realize model matching. Using the two-step method, we can obtain parameters considering BIBO stability and the model matching. In addition, there are no design parameters apart from the dealing noise. Two simulations and an experiment were performed on a system with dead time to verify the effectiveness of the proposed two-step method. The results showed that the proposed method provides BIBO stability and model-matched control parameters from the measured data through a one-time experiment without trial and error.

Soft Mango Firmness Assessment Based on Rayleigh Waves Generated by a Laser-Induced Plasma Shock Wave Technique
Nayuta Arai, Masafumi Miyake, Kengo Yamamoto, Itsuro Kajiwara, Naoki Hosoya
Foods, 10, 323, 1, 16, MDPI AG, 03 Feb. 2021, [Peer-reviewed]
English, Scientific journal, Many methods based on acoustic vibration characteristics have been studied to indirectly assess fruit ripeness via fruit firmness. Among these, the frequency of the 0S2 vibration mode measured on the equator has been examined, but soft-flesh fruit do not show the 0S2 vibration mode. In this study, a Rayleigh wave is generated on a soft mango fruit using the impulse excitation force generated by a laser-induced plasma shock wave technique. Then, the flesh firmness of mangoes is assessed in a non-contact and non-destructive manner by observing the Rayleigh wave propagation velocity because it is correlated with the firmness (shear elasticity), density, and Poisson’s ratio of an object. If the changes in the density and Poisson’s ratio are small enough to be ignored during storage, then the Rayleigh wave propagation velocity is strongly correlated to fruit firmness. Here, we measure the Rayleigh wave propagation velocity and investigate the effect of storage time. Specifically, we investigate the changes in firmness caused by ripening. The Rayleigh wave propagation velocity on the equator of Kent mangoes tended to decrease by over 4% in 96 h. The Rayleigh wave measured on two different lines propagated independent distance and showed a different change rate of propagation velocity during 96-h storage. Furthermore, we consider the reliability of our method by investigating the interaction of a mango seed on the Rayleigh wave propagation velocity.

Experimental validation of vibration control in membrane structures using dielectric elastomer actuators in a vacuum environment
Toshiki Hiruta, Naoki Hosoya, Shingo Maeda, Itsuro Kajiwara
International Journal of Mechanical Sciences, 191, 106049, 1, 10, Elsevier BV, Feb. 2021, [Peer-reviewed], [Last author, Corresponding author]
English, Scientific journal

Active vibration control of automobile drivetrain with backlash considering time-varying long control period
Heisei Yonezawa, Itsuro Kajiwara, Chiaki Nishidome, Takashi Hatano, Masato Sakata, Shigeki Hiramatsu
Journal of Automobile Engineering, 235, 2-3, 773, 783, Feb. 2021, [Peer-reviewed], [Corresponding author]
English, Scientific journal

Motion and Vibration Control of Automotive Drivetrain with Control Cycle Limitation
H. Yonezawa, I. Kajiwara, C. Nishidome, T. Hatano, M. Sakata, S. Hiramatsu
Vibration Engineering for a Sustainable Future, 1, 87, 93, Springer International Publishing, 2021, [Peer-reviewed]
English, International conference proceedings

Loosening Detection of a Bolted Joint Based on Monitoring Dynamic Characteristics in the Ultrasonic Frequency Region
Takanori Niikura, Naoki Hosoya, Shinji Hashimura, Itsuro Kajiwara, Francesco Giorgio-Serchi
Vibration Engineering for a Sustainable Future, 2, 191, 196, Springer International Publishing, 2021, [Peer-reviewed]
English, International conference proceedings

Application of Physical Function Model to State Estimations of Nonlinear Mechanical Systems
Heisei Yonezawa, Itsuro Kajiwara, Shota Sato, Chiaki Nishidome, Takashi Hatano, Shigeki Hiramatsu
IEEE Access, 9, 12002, 12018, Institute of Electrical and Electronics Engineers (IEEE), Jan. 2021, [Peer-reviewed], [Corresponding author]
English, Scientific journal

Novel Sliding Mode Vibration Controller with Simple Model-free Design and Compensation for Actuator’s Uncertainty
Ansei Yonezawa, Itsuro Kajiwara, Heisei Yonezawa
IEEE Access, 9, 4351, 4363, Institute of Electrical and Electronics Engineers (IEEE), Jan. 2021, [Peer-reviewed], [Corresponding author]
English, Scientific journal

Axial force measurement of the bolt/nut assemblies based on the bending mode shape frequency of the protruding thread part using ultrasonic modal analysis
Naoki Hosoya, Takanori Niikura, Shinji Hashimura, Itsuro Kajiwara, Francesco Giorgio-Serchi
Measurement: Journal of the International Measurement Confederation, 162, 107914, 1, 10, 01 Oct. 2020, [Peer-reviewed]
English, Scientific journal, 13302765

Model-free vibration control based on a virtual controlled object considering actuator uncertainty
Ansei Yonezawa, Itsuro Kajiwara, Heisei Yonezawa
Journal of Vibration and Control, 27, 11-12, 1324, 1335, SAGE Publications, 02 Jul. 2020, [Peer-reviewed], [Corresponding author]
English, Scientific journal, The purpose of this research is to construct a simple and practical controller design method, considering the actuator’s parameter uncertainty, without using a model of controlled objects. In this method, a controller is designed with an actuator model including a single-degree-of-freedom virtual structure inserted between actuator and controlled object, resulting in a model-free controller design. Furthermore, an [Formula: see text] control problem is defined so that the actuator’s parameter uncertainty is compensated by satisfying a robust stability condition. Because the actuator model including the virtual controlled object is a simple low-order system, and the actuator’s parameter uncertainty is considered, a controller with high robustness to the actuator’s parameter uncertainty can be designed based on traditional model-based control theory. The effectiveness of the proposed method is verified by both simulation and experiment.

Slip control during inertia phase of clutch-to-clutch shift using model-free self-tuning proportional-integral-derivative control　　　　　　　　　　　　　　　
Yahagi, S., Kajiwara, I., Shimozawa, T.
Journal of Automobile Engineering, 234, 9, 2279, 2290, Apr. 2020, [Peer-reviewed]
English, Scientific journal

Experimental verification of model-free active vibration control approach using virtually controlled object　　　　　　　　　　　　　　　
Yonezawa, H., Kajiwara, I., Yonezawa, A.
Journal of Vibration and Control, 26, 19-20, 1656, 1667, Jan. 2020, [Peer-reviewed], [Corresponding author]
English, Scientific journal

Frequency response function measurements of rotational degrees of freedom using a non-contact moment excitation based on nanosecond laser ablation　　　　　　　　　　　　　　　
Hosoya, N, Ozawa, S, Kajiwara, I
Journal of Sound and Vibration, 456, 239, 253, Sep. 2019, [Peer-reviewed]
English, Scientific journal

Vibration Control of automotive drive system with nonlinear gear backlash　　　　　　　　　　　　　　　
Yonezawa, H, Kajiwara, I, Sato, S, Nishidome, C, Sakata, M, Hatano, T, Hiramatsu, S
Journal of Dynamic Systems, Measurement and Control, 141, 12, No. 121002, Aug. 2019, [Peer-reviewed]
English, Scientific journal

Spherical projectile impact using compressed air for frequency response function measurements in vibration tests　　　　　　　　　　　　　　　
Hosoya, N, Kato, J, Kajiwara, I.
Mechanical Systems and Signal Processing, 134, 106295, 1, 12, Aug. 2019, [Peer-reviewed]
English, Scientific journal

Design of dielectric elastomer actuators for vibration control at high frequencies　　　　　　　　　　　　　　　
Kajiwara, I, Kitabatake, S, Hosoya, N, Maeda, S
International Journal of Mechanical Sciences, 157-158, 849, 857, Jul. 2019, [Peer-reviewed]
English, Scientific journal

Model-free vibration control to enable vibration suppression of arbitrary structures　　　　　　　　　　　　　　　
Yonezawa, H, Kajiwara, I, Yonezawa, A
Proceedings of The 12th Asian Control Conference, Paper: MoB3.1., Jun. 2019, [Peer-reviewed]
English, International conference proceedings

Vibration control of automotive drive system with backlash considering control period constraint
Yonezawa, H, Kajiwara, I, Nishidome, C, Hiramatsu, S, Sakata, M, Hatano, T
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 13, 1, 18-00430, 2019, [Peer-reviewed]
English, Scientific journal

Evaluation of the clamping force of bolted joints using local mode characteristics of a bolt head　　　　　　　　　　　　　　　
Hosoya, N, Hosokawa, T, Kajiwara, I, Hashimura, S, Huda, F
Journal of Nondestructive Evaluation, 37:75, Dec. 2018, [Peer-reviewed]
English, Scientific journal

Visualization of Lamb waves propagating in transparent materials using high-speed camera　　　　　　　　　　　　　　　
Katsumata, T, Hosoya, N, Kanda, A, Kajiwara, I, Onuma, T
Proceedings on The 5th Asia-Pacific Conference on Engineering and Applied Science, APCEAS-0120, Dec. 2018, [Peer-reviewed]
English, International conference proceedings

Damage detection in pipes based on acoustic excitations using laser-induced plasma
Itsuro Kajiwara, Ryosuke Akita, Naoki Hosoya
Mechanical Systems and Signal Processing, 111, 570, 579, Academic Press, 01 Oct. 2018, [Peer-reviewed]
English, Scientific journal

Motion and Vibration Control of Automotive Drive System Considering Gear Backlash Nonlinearity　　　　　　　　　　　　　　　
Yonezawa, H, Kajiwara, I, Sato, S, Nishidome, C, Sakata, M, Hatano, T, Hiramatsu, S
Proceedings of 14th International Conference on Motion and Vibration Control, B-06, Aug. 2018, [Peer-reviewed]
English, International conference proceedings

Experimental verification of a real-time tuning method of a model-based controller by perturbations to its poles
Itsuro Kajiwara, Keiichiro Furuya, Shinichi Ishizuka
Mechanical Systems and Signal Processing, 107, 396, 408, Academic Press, 01 Jul. 2018, [Peer-reviewed]
English, Scientific journal

Non-contact and non-destructive Lamb wave generation using laser-induced plasma shock wave
Hosoya Naoki, Yoshinaga Atsushi, Kanda Atsushi, Kajiwara Itsuro
International journal of mechanical sciences, 140, 140, 486, 492, Elsevier, May 2018, [Peer-reviewed]
English, Scientific journal

Numerical simulations of magnetic resonance elastography using finite element analysis with a linear heterogeneous viscoelastic model
Sunao Tomita, Hayato Suzuki, Itsuro Kajiwara, Gen Nakamura, Yu Jiang, Mikio Suga, Takayuki Obata, Shigeru Tadano
Journal of Visualization, 21, 1, 133, 145, 01 Feb. 2018, [Peer-reviewed]
English, Scientific journal

Lamb wave generation using nanosecond laser ablation to detect damage
Hosoya, N, Umino, R, Kanda, A, Kajiwara, I, Yoshinaga, A
Journal of Vibration and Control, 24, 24, 5842, 5853, 2018, [Peer-reviewed]
English, Scientific journal

Dynamic characterizations of underwater structures using non-contact vibration tests based on nanosecond laser ablation in water: evaluation of passive vibration suppression with damping materials　　　　　　　　　　　　　　　
Hosoya, N, Kajiwara, I, Umenai, K, Maeda, S
Journal of Vibration and Control, 24, I6, 3714, 3725, 2018, [Peer-reviewed]
English, Scientific journal

Structural Health Monitoring Based on Laser Excitation Vibration Test and Wavelet Transform　　　　　　　　　　　　　　　
Cao, S, Kajiwara, I, Li, X, Hosoya, N
Proceedings of The 11th International Conference on Sensing Technology, 414, 419, Dec. 2017, [Peer-reviewed]
English, International conference proceedings

Bolt Loosening Diagnosis by Measuring Vibration Responses Excited by Laser Induced Plasma　　　　　　　　　　　　　　　
Singh, M.P, Kajiwara, I, Hosoya, N
Proceedings of The 17th Asian Pacific Vibration Conference, #124, Nov. 2017, [Peer-reviewed]
English, International conference proceedings

Excitation system based on laser-induced plasma to generate Lamb wave　　　　　　　　　　　　　　　
Hosoya, N, Yoshinaga, A, Kanda, A, Umino, R, Kajiwara, I.
Proceedings of International Conference on Engineering Vibration 2017, 121, Sep. 2017, [Peer-reviewed]
English, International conference proceedings

Non-destructive firmness assessment of apples using a non-contact laser excitation system based on a laser-induced plasma shock wave
Naoki Hosoya, Michiru Mishima, Itsuro Kajiwara, Shingo Maeda
POSTHARVEST BIOLOGY AND TECHNOLOGY, 128, 11, 17, Jun. 2017, [Peer-reviewed]
English, Scientific journal

Active vibration suppression of membrane structures and evaluation with a non-contact laser excitation vibration test
Yuelin Zhang, Toshiki Hiruta, Itsuro Kajiwara, Naoki Hosoya
JOURNAL OF VIBRATION AND CONTROL, 23, 10, 1681, 1692, Jun. 2017, [Peer-reviewed]
English, Scientific journal

Model-free adaptive control scheme for EGR/VNT control of a diesel engine using the simultaneous perturbation stochastic approximation
Shinichi Ishizuka, Itsuro Kajiwara, Junichi Sato, Yoshifumi Hanamura, Satoshi Hanawa
TRANSACTIONS OF THE INSTITUTE OF MEASUREMENT AND CONTROL, 39, 1, 114, 128, Jan. 2017, [Peer-reviewed]
English, Scientific journal

A New Approach for NOx Soft Sensors for the Aftertreatment of Diesel Engines
S. Ishizuka, I. Kajiwara, J. Sato, Y. Hanamura
Journal of Physics: Conference Series, 744, 1, Institute of Physics Publishing, 03 Oct. 2016, [Peer-reviewed]
English, International conference proceedings

Dynamic characterizations of underwater structures using non-contact vibration test based on nanosecond laser ablation in water: investigation of cavitation bubbles by visualizing shockwaves using the Schlieren method
Naoki Hosoya, Itsuro Kajiwara, Koh Umenai
JOURNAL OF VIBRATION AND CONTROL, 22, 17, 3649, 3658, Oct. 2016, [Peer-reviewed]
English, Scientific journal

Nano-second Laser-induced Plasma Shock Wave in Air for Non-contact Vibration Tests
N. Hosoya, M. Nagata, I. Kajiwara, R. Umino
EXPERIMENTAL MECHANICS, 56, 7, 1305, 1311, Sep. 2016, [Peer-reviewed]
English, Scientific journal

Damage Detection in Transparent Materials Using Non-Contact Laser Excitation by Nano-Second Laser Ablation and High-Speed Polarization-imaging Camera
N. Hosoya, R. Umino, I. Kajiwara, S. Maeda, T. Onuma, A. Mihara
EXPERIMENTAL MECHANICS, 56, 2, 339, 343, Feb. 2016, [Peer-reviewed]
English, Scientific journal

Multi-objective optimization for vibration suppression of smart laminated composites
Honda, S, Narita, Y, Kajiwara, I
Mechanical Engineering Journal, 3, 1, 14-00561, 00561-14-00561, The Japan Society of Mechanical Engineers, 2016, [Peer-reviewed]
English, Scientific journal

Quality assessment of apples based on modal analysis using laser-induced plasma shock wave
M. Mishima, N. Hosoya, I. Kajiwara, S. Maeda
PROCEEDINGS OF ISMA2016 INTERNATIONAL CONFERENCE ON NOISE AND VIBRATION ENGINEERING AND USD2016 INTERNATIONAL CONFERENCE ON UNCERTAINTY IN STRUCTURAL DYNAMICS, 2279, 2286, 2016, [Peer-reviewed]
English, International conference proceedings

Adaptive NOX Soft Sensor for Aftertreatment of Diesel Engines
Shinichi Ishizuka, Itsuro Kajiwara, Junichi Sato, Yoshifumi Hanamura
2015 3RD INTERNATIONAL CONFERENCE ON CONTROL, MECHATRONICS AND AUTOMATION (ICCMA 2015), 42, 2016, [Peer-reviewed]
English, International conference proceedings

Adaptive Vibration Control Based on Pole Tuning of Model-based Controller　　　　　　　　　　　　　　　
Furuya, K, Ishizuka, S, Kajiwara, I
Proceedings of the 16th Asia Pacific Vibration Conference, 718, 724, Nov. 2015, [Peer-reviewed]
English, International conference proceedings

Development of Lamb wave visualization technology using laser
神田淳, 細矢直基, 梶原逸朗
可視化情報学会誌, 35, Suppl.2, 45‐46, 15 Sep. 2015
Japanese

Lamb wave generation using laser ablation　　　　　　　　　　　　　　　
Hosoya, N, Umino, R, Kanda, A, Kajiwara, I, Yoshinaga, A
Proceedings of International Conference on Engineering Vibration, 299, 1674, 1681, Sep. 2015, [Peer-reviewed]
English, International conference proceedings

A Composition Method for Model-free PID Control and The Convergence Characteristic　　　　　　　　　　　　　　　
Ishizuka, S, Kajiwara, I
Proceedings of the 4th Korea-Japan Joint Symposium on Dynamics & Control, 148, 150, May 2015, [Peer-reviewed]
English, International conference proceedings

Active vibration control of a membrane structure using PVDF actuator　　　　　　　　　　　　　　　
Zhang, Y, Hiruta, T, Kajiwara I, Hosoya, N
Proceedings of the 4th Korea-Japan Joint Symposium on Dynamics & Control, 163, 166, May 2015, [Peer-reviewed]
English, International conference proceedings

Viscoelastic modulus of agarose gels by magnetic resonance elastography using Micro-MRI
SUZUKI Hayato, TADANO Shigeru, GOTO Mototeru, YAMADA Satoshi, FUJISAKI Kazuhiro, KAJIWARA Itsuro, SUGA Mikio, NAKAMURA Gen
Mechanical Engineering Journal, 2, 3, 14, 00417-14-00417, The Japan Society of Mechanical Engineers, 2015, [Peer-reviewed]
English, Scientific journal, This study aimed to apply magnetic resonance elastography (MRE) using micro-magnetic resonance imaging (micro-MRI) system for the measurements of viscoelastic modulus in soft matters. The rectangular specimens of 90 × 70 × 50 mm were made of agarose gel with five kinds of stiffness by changing concentrations. The specimens were oscillated with longitudinal waves transmitted by an elastic-bar from a vibration generator in a micro-MRI system. Since the viscoelastic properties depend on the excitation frequency and amplitude, the experimental conditions were selected in the range of 50-250 Hz and 0.1-0.5 mm. The viscoelastic modulus was expressed as storage shear modulus G´ and loss shear modulus G˝. As a result, G´ increased with the frequency and amplitude, and the difference of G´ between hard and soft gels was obtained. The viscoelastic modulus of agarose gels was measured using the MRE system under the excitation conditions. Furthermore, double-layer specimens composed of 0.6 and 2.0 wt% gels were examined as an application of the MRE system. The difference of wave pattern between the hard and soft parts was observed. The values of G´ in the soft parts of the double-layer specimens corresponded to the value of the single-layer specimen, but the values of G´ in the hard parts were varied.

Online tuning of a model-based controller by perturbation of its poles
Keiichiro Furuya, Shinichi Ishizuka, Itsuro Kajiwara
JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, 9, 2, No.15-00061, 2015, [Peer-reviewed], [Last author, Corresponding author]
English, Scientific journal

Online adaptive PID control for MIMO systems using simultaneous perturbation stochastic approximation
Shinichi Ishizuka, Itsuro Kajiwara
JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, 9, 2, No.14-00390, 2015, [Peer-reviewed]
English, Scientific journal

Non-contact acoustic tests based on nanosecond laser ablation: Generation of a pulse sound source with a small amplitude
Naoki Hosoya, Itsuro Kajiwara, Tatsuo Inoue, Koh Umenai
JOURNAL OF SOUND AND VIBRATION, 333, 18, 4254, 4264, Sep. 2014, [Peer-reviewed]
English, Scientific journal

Vibration control evaluation for underwater structures using non-contact laser excitation
Umenai K, Hosoya N, Kajiwara I
Proceedings of 12th International Conference on Motion and Vibration Control, 2A32, Aug. 2014, [Peer-reviewed]
English, International conference proceedings

Pole tuning of model-based controller using simultaneous perturbation stochastic approximation
Furuya K, Ishizuka S, Kajiwara I, Zhang Y
Proceedings of 12th International Conference on Motion and Vibration Control, 3B23, Aug. 2014, [Peer-reviewed]
English, International conference proceedings

Co-operative PID tuning for interference systems using Simultaneous Perturbation Stochastic Approximation
Ishizuka S, Kajiwara, I.
Proceedings of 12th International Conference on Motion and Vibration Control, 2A14, Aug. 2014, [Peer-reviewed]
English, International conference proceedings

Mechano-actuated ultrafast full-colour switching in layered photonic hydrogels
Youfeng Yue, Takayuki Kurokawa, Md Anamul Haque, Tasuku Nakajima, Takayuki Nonoyama, Xufeng Li, Itsuro Kajiwara, Jian Ping Gong
NATURE COMMUNICATIONS, 5, 4659, Aug. 2014, [Peer-reviewed]
English, Scientific journal

Damage detection in membrane structures using non-contact laser excitation and wavelet transformation
Feblil Huda, Itsuro Kajiwara, Naoki Hosoya
JOURNAL OF SOUND AND VIBRATION, 333, 16, 3609, 3624, Aug. 2014, [Peer-reviewed]
English, Scientific journal

MRE simulation based on finite element vibration analysis of viscoelastic model
S. Tomita, H. Suzuki, I. Kajiwara, S. Tadano, G. Nakamura, Y. Jiang
IFMBE Proceedings, 43, 43, 168, 171, Springer Verlag, 2014, [Peer-reviewed]
English, International conference proceedings

Viscoelastic properties of gel material and soft tissue measured by MRE (Magnetic Resonance Elastography) using micro MRE
Hayato Suzuki, Mikio Suga, Kazuhiro Fujisaki, Itsuro Kajiwara, Gen Nakamura, Kogo Yoshikawa, Shigeru Tadano
IFMBE Proceedings, 43, 156, 159, Springer Verlag, 2014, [Peer-reviewed]
English, International conference proceedings

Viscoelastic properties of gel material and soft tissue measured by MRE (Magnetic Resonance Elastography) using micro MRE
Hayato Suzuki, Mikio Suga, Kazuhiro Fujisaki, Itsuro Kajiwara, Gen Nakamura, Kogo Yoshikawa, Shigeru Tadano
IFMBE Proceedings, 43, 156, 159, Springer Verlag, 2014, [Peer-reviewed]
English, International conference proceedings

Vibration test and health monitoring of membrane structure using non-contact laser excitation
Feblil Huda, Itsuro Kajiwara, Naoki Hosoya
HEALTH MONITORING OF STRUCTURAL AND BIOLOGICAL SYSTEMS 2014, 9064, 2014, [Peer-reviewed]
English, International conference proceedings

Robustness analysis of enhanced adaptive feed-forward cancellation
Shota Yabui, Itsuro Kajiwara, Ryohei Okita
JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, 8, 1, 1, 12, 2014, [Peer-reviewed]
English, Scientific journal

MRE simulation based on finite element vibration analysis of viscoelastic model
S. Tomita, H. Suzuki, I. Kajiwara, S. Tadano, G. Nakamura, Y. Jiang
IFMBE Proceedings, 43, 168, 171, Springer Verlag, 2014, [Peer-reviewed]
English, International conference proceedings

Laser excitation system for measuring frequency response function of underwater structures
N. Hosoya, I. Kajiwara, K. Umenai
PROCEEDINGS OF INTERNATIONAL CONFERENCE ON NOISE AND VIBRATION ENGINEERING (ISMA2014) AND INTERNATIONAL CONFERENCE ON UNCERTAINTY IN STRUCTURAL DYNAMICS (USD2014), 1089, 1099, 2014, [Peer-reviewed]
English, International conference proceedings

A Comparison Study between a Resonant Filter and an Adaptive Feed-forward Cancellation for Implementation of a Control System
Shota Yabui, Itsuro Kajiwara
2014 IEEE 13TH INTERNATIONAL WORKSHOP ON ADVANCED MOTION CONTROL (AMC), 598, 603, 2014, [Peer-reviewed]
English, International conference proceedings

A study of equivalence between adaptive learning and loop shaping methods for disturbance compensation
Shota Yabui, Atushi Okuyama, Takenori Atsumi, Itsuro Kajiwara
JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, 8, 3, 1, 14, 2014, [Peer-reviewed]
English, Scientific journal

Bolt loosening analysis and diagnosis by non-contact laser excitation vibration tests
Feblil Huda, Itsuro Kajiwara, Naoki Hosoya, Shozo Kawamura
MECHANICAL SYSTEMS AND SIGNAL PROCESSING, 40, 2, 589, 604, Nov. 2013, [Peer-reviewed]
English, Scientific journal

Acoustic testing in a very small space based on a point sound source generated by laser-induced breakdown: Stabilization of plasma formation
Naoki Hosoya, Masaki Nagata, Itsuro Kajiwara
Journal of Sound and Vibration, 332, 19, 4572, 4583, 16 Sep. 2013, [Peer-reviewed]
English, Scientific journal

Non-contact Vibro-acoustic Tests Based on Nano-second laser ablation　　　　　　　　　　　　　　　
Hosoya, N, Inoue, T, Kajiwara, I
Proceedings on 11th International Conference on Vibration Problems, 248, Sep. 2013, [Peer-reviewed]
English, International conference proceedings

Optimum Design and Experimental Evaluation for Smart Micro-composites by Using Laser Excitation Technique　　　　　　　　　　　　　　　
Shinya HONDA, Kazuki WATANABE, Yoshihiro NARITA, Itsuro KAJIWARA
Proceedings of the 9th International Symposium on Vibrations of Continuous Systems (ISVCS9), 28, 30, Jul. 2013, [Peer-reviewed]
English, International conference proceedings

Maximization of Vibration Control Performance for Micro Smart Composites with the Laser Excitation Technique　　　　　　　　　　　　　　　
Kazuki WATANABE, Shinya HONDA, Yoshihiro NARITA, Itsuro KAJIWARA
Proceedings of the 15th Asia Pacific Vibration Conference, M1_303B_1, USB, Jun. 2013, [Peer-reviewed]
English, International conference proceedings

Vibration measurement and monitoring of a rotating disk using contactless laser excitation
Itsuro Kajiwara, Naoki Hosoya
ASME 2013 Dynamic Systems and Control Conference, DSCC 2013, 3, American Society of Mechanical Engineers (ASME), 2013, [Peer-reviewed]
English, International conference proceedings

Improvement of convergence for adaptive feed-forward cancellation using variable gains in a head positioning system of hard disk drives
Shota Yabui, Itsuro Kajiwara, Shigeo Nakamura, Takenori Atsumi
Journal of Advanced Mechanical Design, Systems and Manufacturing, 7, 6, 903, 918, 2013, [Peer-reviewed]
English, Scientific journal

Bolted joint loosening detection by using laser excitation
Feblil Huda, Itsuro Kajiwara, Naoki Hosoya, Shozo Kawamura
HEALTH MONITORING OF STRUCTURAL AND BIOLOGICAL SYSTEMS 2013, 8695, 2013, [Peer-reviewed]
English, International conference proceedings

ACTIVE VIBRATION CONTROL BASED ON SELF-SENSING FOR UNKNOWN TARGET STRUCTURES BY DIRECT VELOCITY FEEDBACK WITH ADAPTIVE FEED-FORWARD CANCELLATION
Shota Yabui, Itsuro Kajiwara, Ryohei Okita
PROCEEDINGS OF THE ASME 2013 DYNAMIC SYSTEMS AND CONTROL CONFERENCE (DSCC2013), VOL. 1, 4014, 2013, [Peer-reviewed]
English, International conference proceedings

Viscoelastic properties of agarose gel by MRE using micro MRI　　　　　　　　　　　　　　　
Suzuki, H, Fujiki, K, Suga, M, Nakamura, G, Haibig, W, Kajiwara, I., Tadano, S
Proceedings of World Congress on Medical Physics and Biomedical Engineering 2012, TH.07/07.3P-08, May 2012, [Peer-reviewed]
English, International conference proceedings

Vibration testing based on impulse response excited by pulsed-laser ablation: Measurement of frequency response function with detection-free input
Naoki Hosoya, Itsuro Kajiwara, Takahiko Hosokawa
JOURNAL OF SOUND AND VIBRATION, 331, 6, 1355, 1365, Mar. 2012, [Peer-reviewed]
English, Scientific journal

Self-sensing and model-free active vibration control based on DVFB (demonstration of control method by simulation)
Shuichi Yahagi, Yusuke Sato, Itsuro Kajiwara, Masahiko Kondo
Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, 78, 793, 3104, 3117, 2012, [Peer-reviewed]
Japanese, Scientific journal

Vibration control evaluation of smart microstructures with non-contact laser excitation
Itsuro Kajiwara, Satoshi Nakamura, Yan Zhu, Naoki Hosoya
ASME 2012 5th Annual Dynamic Systems and Control Conference Joint with the JSME 2012 11th Motion and Vibration Conference, DSCC 2012-MOVIC 2012, 3, 833, 841, 2012, [Peer-reviewed]
English, International conference proceedings

Non-contact vibration tests with detection-free input based on pulsed-laser ablation for underwater structures
Naoki Hosoya, Shuichi Yahagi, Itsuro Kajiwara
Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, 78, 791, 2426, 2437, 2012, [Peer-reviewed]
Japanese, Scientific journal

Multidisciplinary design optimization for smart micro-composite and experimental validation by using laser excitation technique
Shinya Honda, Kazuki Watanabe, Yoshihiro Narita, Itsuro Kajiwara
ASME 2012 5th Annual Dynamic Systems and Control Conference Joint with the JSME 2012 11th Motion and Vibration Conference, DSCC 2012-MOVIC 2012, 3, 339, 347, 2012, [Peer-reviewed]
English, International conference proceedings

Excitation System for Magnetic Resonance Elastography Using Micro MRI
TADANO Shigeru, FUJISAKI Kazuhiro, SUZUKI Hayato, TAKAO Seishin, SUGA Mikio, KAJIWARA Itsuro, YAMAMOTO Toru, JIANG Yu, NAKAMURA Gen
Journal of Biomechanical Science and Engineering, 7, 4, 463, 474, The Japan Society of Mechanical Engineers, 2012, [Peer-reviewed]
English, Scientific journal

EGR-VNT cooperative control of diesel engine based on ILQ design
Chiaki Nishidome, Junichi Satoh, Itsuro Kajiwara, Yoshifumi Hanamura, Hiroshi Takata
Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, 78, 785, 114, 125, 2012, [Peer-reviewed]
Japanese, Scientific journal

Acoustic vibration testing in a micro-space based on a point source generated by laser-induced breakdown
Naoki Hosoya, Masaki Nagata, Itsuro Kajiwara
Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, 78, 787, 770, 782, 2012, [Peer-reviewed]
Japanese, Scientific journal

Acoustic testing in a micro-space based on a point source generated by laser-induced breakdown
N. Hosoya, M. Nagata, I. Kajiwara
PROCEEDINGS OF INTERNATIONAL CONFERENCE ON NOISE AND VIBRATION ENGINEERING (ISMA2012) / INTERNATIONAL CONFERENCE ON UNCERTAINTY IN STRUCTURAL DYNAMICS (USD2012), 49, 58, 2012, [Peer-reviewed]
English, International conference proceedings

Loose Bolt Detection by high frequency vibration measurement with non-contact laser excitation
Kajiwara, I., Miyamoto, D, Hosoya, N, Nishidome, C
Journal of System Design and Dynamics, 5, 8, 1559, 1571, The Japan Society of Mechanical Engineers, Dec. 2011, [Peer-reviewed]
English, Scientific journal, This paper proposes a vibration testing and health monitoring system based on an impulse response excited by a laser ablation. High power YAG pulse laser is used for producing an ideal impulse force on structural surface. It is possible to measure high frequency vibration responses in this system. A health monitoring system is constructed by this vibration testing system and a damage detecting algorithm. A microscopic damage of structures can be extracted by detecting fluctuations of high frequency vibration response with the present health monitoring system. In this study, loosening of bolt tightening torques is defined as the damage of the system. The damage is detected and identified by statistical evaluations of measured frequency response data with Recognition-Taguchi method. The effectiveness of the present approach is verified by experiment to detect and identify the loosening of bolts installed on an aluminum block structure.

Vibration testing based on impulse response excited by laser ablation
Itsuro Kajiwara, Naoki Hosoya
JOURNAL OF SOUND AND VIBRATION, 330, 21, 5045, 5057, Oct. 2011, [Peer-reviewed]
English, Scientific journal

Multidisciplinary Design Optimization for Vibration Control of Smart Laminated Composite Structures
Shinya Honda, Itsuro Kajiwara, Yoshihiro Narita
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 22, 13, 1419, 1430, Sep. 2011, [Peer-reviewed]
English, Scientific journal

Design of smart composite for vibration suppression using lamination parameters
Honda S, Kosaka K, Narita Y, Kajiwara I
Proceedings of ICCM International Conferences on Composite Materials, IF0541, Aug. 2011, [Peer-reviewed]
English, International conference proceedings

Vibration Testing Method of Smart Micro-Composite with Laser Excitation
Shinya Honda, Yoshihiro Narita, Itsuro Kajiwara, Satoshi Nakamura
DYNAMICS FOR SUSTAINABLE ENGINEERING, 2011, VOL 3, 1462, 1470, 2011, [Peer-reviewed]
English, International conference proceedings

Simultaneous Remote Energy Supply and Motion Control of Micro Vehicles with Laser
Kajiwara, I, Harada, H
Journal of System Design and Dynamics, 5, 6, 1202, 1213, The Japan Society of Mechanical Engineers, 2011, [Peer-reviewed]
English, Scientific journal, This paper proposes a method for simultaneous laser energy transmission and motion control of micro vehicles. Both the energy transmission and the remote control are achieved simultaneously with the same light path of two lasers. A green laser and a laser diode are used independently for the navigation and the energy transmission, respectively. Core technology of the system is the laser tracking, in which the direction of the tracking laser beam is changed by a galvano mirror so as to keep chasing the position of the corner-cube reflector mounted on the vehicle. In addition, by using a pulsing oscillation of the tracking laser, the vehicle is able to receive operation commands as a frequency change of the pulse. A beam of the laser diode runs parallel to the tracking beam and is radiated to the solar cells mounted on the vehicle. Then the photoelectrically converted power is supplied for the DC motors and control circuits on the vehicle. Experiments with a small wheeled-vehicle were conducted, and the results show that proposed system exhibits sufficient performance for controlling and supplying power to the micro vehicle.

Vibration testing based on impulse response excited by laser ablation (Input sensorless FRF measurements)
Hosoya N, Kajiwara, I., Hosokawa T
Transactions of the Japan Society of Mechanical Engineers Series C, 77, 773, 102, 113, The Japan Society of Mechanical Engineers, 2011, [Peer-reviewed]
Japanese, Scientific journal

Vibration test for membrane structures using non-contact laser excitation system in vacuum environment
Kajiwara I, Obara K
Transactions of the Japan Society of Mechanical Engineers Series C, 77, 779, 2662, 2672, The Japan Society of Mechanical Engineers, 2011, [Peer-reviewed]
Japanese, Scientific journal

Vibration measurement for rotating disk using contactless laser excitation
Daisuke Miyamoto, Itsuro Kajiwara, Naoki Hosoya
Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, 77, 784, 4402, 4412, 2011, [Peer-reviewed]
Japanese, Scientific journal

Vibration control of hdd smart head actuator with pzt element
Nakamura S, Kajiwara I, Arisaka T
Transactions of the Japan Society of Mechanical Engineers Series C, 77, 775, 847, 857, The Japan Society of Mechanical Engineers, 2011, [Peer-reviewed]
Japanese, Scientific journal

Vibration control evaluation of micro smart structures with non-contact laser excitation
Satoshi Nakamura, Yan Zhu, Itsuro Kajiwara, Naoki Hosoya
Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, 77, 784, 4413, 4424, 2011, [Peer-reviewed]
Japanese, Scientific journal

Structural health monitoring by high frequency vibration measurement with non-contact laser excitation
I. Kajiwara, D. Miyamoto, N. Hosoya, C. Nishidome
HEALTH MONITORING OF STRUCTURAL AND BIOLOGICAL SYSTEMS 2011, 7984, 2011, [Peer-reviewed]
English, International conference proceedings

Health monitoring based on high frequency vibration measurement with laser
Miyamoto D, Kajiwara I, Hosoya N, Nishidome C
Transactions of the Japan Society of Mechanical Engineers Series C, 77, 777, 1760, 1771, 2011, [Peer-reviewed]
Japanese, Scientific journal

Remote motion control of micro vehicles by two-way laser communication technology
Itsuro Kajiwara, Kosuke Nakano, Hiroyuki Harada
Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, 76, 765, 1232, 1239, Japan Society of Mechanical Engineers, 2010, [Peer-reviewed]
Japanese, Scientific journal

VIBRATION MEASUREMENTS FOR MEMBRANE STRUCTURES BY USING LASER EXCITATION SYSTEM
Kenya Obara, Itsuro Kajiwara
PROCEEDINGS OF THE ASME CONFERENCE ON SMART MATERIALS, ADAPTIVE STRUCTURES AND INTELLIGENT SYSTEMS, 2010, VOL 2, 3617, 559, 564, 2010, [Peer-reviewed]
English, International conference proceedings

Remote motion control of micro vehicles by two-way laser communication technology
Kajiwara I, Nakano K, Harada H
Journal of System Design and Dynamics, 4, 6, 941, 952, The Japan Society of Mechanical Engineers, 2010, [Peer-reviewed]
English, Scientific journal

MULTIDISCIPLINARY DESIGN OPTIMIZATION OF ACTUATOR ARRANGEMENTS, LAY-UP CONFIGURATIONS AND CONTROL SYSTEMS FOR SMART LAMINATED COMPOSITE STRUCTURES
Shinya Honda, Itsuro Kajiwara, Yoshihiro Narita
PROCEEDINGS OF THE ASME CONFERENCE ON SMART MATERIALS, ADAPTIVE STRUCTURES AND INTELLIGENT SYSTEMS, 2010, VOL 2, 3661, 315, 321, 2010, [Peer-reviewed]
English, International conference proceedings

Input Sensorless FRF Measurements by Laser Excitation System
N. Hosoya, I. Kajiwara, T. Hosokawa
PROCEEDINGS OF ISMA2010 - INTERNATIONAL CONFERENCE ON NOISE AND VIBRATION ENGINEERING INCLUDING USD2010, 1747, 1757, 2010, [Peer-reviewed]
English, International conference proceedings

Laser Excitation System for Measuring Frequency Response Function of High Frequency Vibration　　　　　　　　　　　　　　　
Hosoya, N, Kajiwara, I
Proceedings of 13th Asia-Pacific Vibration Conference, P84, Nov. 2009, [Peer-reviewed]
English, International conference proceedings

Optimization of smart structure for improving servo performance of hard disk drive
Masafumi Takahashi, Itsuro Kajiwara, Toshihiro Arisaka
Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, 75, 753, 1369, 1376, Japan Society of Mechanical Engineers, 2009, [Peer-reviewed]
Japanese, Scientific journal

Vibration testing based on impulse response excited by laser ablation
Naoki Hosoya, Itsuro Kajiwara, Hitoshi Sorimachi
Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, 75, 760, 3160, 3167, Japan Society of Mechanical Engineers, 2009, [Peer-reviewed]
Japanese, Scientific journal

Vibration Control of Hard Disk Drive with Smart Structure Technology for Improving Servo Performance
Itsuro Kajiwara, Toshio Uchiyama, Toshihiro Airisaka
MOTION AND VIBRATION CONTROL, 165, +, 2009, [Peer-reviewed]
English, International conference proceedings

Optimization of smart structure for improving servo performance of hard disk drive
Kajiwara, I., Takahashi, M, Arisaka, T
Journal of System Design and Dynamics, 3, 6, 906, 917, The Japan Society of Mechanical Engineers, 2009, [Peer-reviewed]
English, Scientific journal

Vibration Control of Smart Structures with Dynamic Characteristic Variation
ITSURO KAJIWARA, RYO TSUCHIYA
Journal of System Design and Dynamics, 2, 1, 413, 424, The Japan Society of Mechanical Engineers, 2008
English, Scientific journal, This study is concerned with a vibration control strategy for a flexible-link system to achieve effective vibration suppression. It is required that the control system adapts to the dynamic characteristic variation of the system. A smart-link system composed of piezoelectric actuators and gain-scheduled controller is proposed to cope with change of the variable parameters which causes the dynamic characteristic variation of the system. An adaptive control is conducted by scheduling some LTI controllers to keep the stability and performance against the change of the variable parameters. The appropriate actuator location is determined by the target mode shapes. The scheduling gains for the LTI controllers designed at their operating points are optimized to obtain effective vibration suppression of the system.

Gain-scheduled control of smart link system with dynamic characteristic variation
Kajiwara I, Tsuchiya R, Ishizuka S
Proceedings of 19th International Conference on Adaptive Structures and Technologies 2008, ICAST 2008, 718, 729, 2008, [Peer-reviewed]
English, International conference proceedings

Piezoelectric and control optimisation of smart structures for vibration and sound suppression
Kimiaki Ono, Itsuro Kajiwara
INTERNATIONAL JOURNAL OF VEHICLE DESIGN, 43, 1-4, 184, 199, 2007, [Peer-reviewed]
English, Scientific journal

Design of active control system for combustion instability using H-2 algorithm
Hiroyuki Sato, Chiaki Nishidome, Itsuro Kajiwara, A. Koichi Hayashi
INTERNATIONAL JOURNAL OF VEHICLE DESIGN, 43, 1-4, 322, 340, 2007, [Peer-reviewed]
English, Scientific journal

Broadband robust controller design of multi-frequency-band parallel control system
Kajiwara, I., Kato H, Kondo M, Sato Y
Transactions of the Japan Society of Mechanical Engineers Series C, 73, 732, 2246, 2254, The Japan Society of Mechanical Engineers, 2007, [Peer-reviewed]
Japanese, Scientific journal

Active control of combustion oscillations in a lean premixed gas-turbine combustor
Shigeru Tachibana, Laurent Zimmer, Yoji Kurosawa, Kazuo Suzuki, Hiroyuki Sato, A. Koichi Hayashi, Chiaki Nishidome, Itsuro Kajiwara
INTERNATIONAL JOURNAL OF VEHICLE DESIGN, 43, 1-4, 306, 321, 2007, [Peer-reviewed]
English, Scientific journal

Gain-scheduled control of smart structures with dynamic characteristic variation
Kajiwara I, Tsuchiya R
Proceedings of the World Forum on Smart Materials and Smart Structures Technology, 453, 2007, [Peer-reviewed]
English, International conference proceedings

Tracking control and system development for laser-driven micro-vehicles
Itsuro Kajiwara, Kentaro Hoshino, Shinji Hara, Daisuke Shiokata, Takashi Yabe
Transactions of the Japan Society for Aeronautical and Space Sciences, 49, 164, 71, 76, 2006
English, Scientific journal

Remote control of laser-driven micro-vehicles
Tetsuya Okita, Kentaro Hoshino, Itsuro Kajiwara
BEAMED ENERGY PROPULSION, 830, 553, +, 2006, [Peer-reviewed]
English, International conference proceedings

Optimization of vibration control system for smart structures with disturbance characteristic variation
Ono K, Kajiwara I
Proceedings of 11th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference, AIAA-2006-7046, 2006, [Peer-reviewed]
English, International conference proceedings

Integrated optimization of actuator array and adaptive control for smart structures
Tsuchiya R, Kajiwara, I.
Transactions of the Japan Society of Mechanical Engineers Series C, 72, 713, 53, 60, 2006, [Peer-reviewed]
Japanese, Scientific journal

Optimal design of smart carriage arm in magnetic disk drive for vibration suppression
F Ohashi, Kajiwara, I., M Iwadare, T Arisaka
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS, 11, 8-10, 711, 717, Aug. 2005
English, Scientific journal

Efficiency of Air Injection on Stability and Emission Controls in Premixed Combustion　　　　　　　　　　　　　　　
Sato, H, Nishidome, C, Kajiwara, I, Nakajima, M, Nagao, T, Hayashi K, Ogawa, S
Proceedings of 20th International Colloquium on the Dynamics of Explosions and Reactive Systems, 73, 2005, [Peer-reviewed]
English, International conference proceedings

Multidisciplinary Design Optimization of Smart Structures for Vibration and Sound Suppression　　　　　　　　　　　　　　　
Kajiwara, I, Ono, K, Ishizuka, S
Proceedings of 11th Asia-Pacific Vibration Conference, 1, 198, 203, 2005, [Peer-reviewed]
English, International conference proceedings

Suppression of combustion noise and combustion oscillation by thermo-acoustic active control using secondary flame
Masaru Ikame, Takeyuki Kishi, Kazuyoshi Harumi, Katsuhide Hiraoka, Hideyuki Oka, Hiroyuki Sato, A. Koichi Hayashi, Chiaki Nishidome, Itsuro Kajiwara, Satoru Ogawa
Proceedings of the ASME Turbo Expo 2005, Vol 1, GT2005-68233, 549, 559, 2005, [Peer-reviewed]
English, International conference proceedings

Development of laser propulsion and tracking system for laser-driven micro-airplane
H Ishikawa, Kajiwara, I, K Hoshino, T Yabe, S Uchida, Y Shimane
BEAMED ENERGY PROPULSION, 702, 342, 353, 2004, [Peer-reviewed]
English, International conference proceedings

Integrated Design of Mechanism and Control System for Smart Structures　　　　　　　　　　　　　　　
Kajiwara, I, Ohashi, F
Proceedings of The First International Symposium on Intelligent Artifacts and Bio-systems, OS-8-4, 2004, [Peer-reviewed]
English, International conference proceedings

Multidisciplinary Optimization of Smart Structure with Characteristic Variation for Vibration Suppression　　　　　　　　　　　　　　　
Kajiwara, I., Tsuchiya, R
Proceedings of the International Workshop on Smart Materials and Structural Systems, 8, 04-1, 276, 277, 2004, [Peer-reviewed]
English, International conference proceedings

Multidisciplinary Design of Actuator Array and Adaptive Control System for Smart Structures　　　　　　　　　　　　　　　
Kajiwara, I, Tsuchiya, R
Proceedings of The Fourth International Symposium on Advanced Fluid Information and The First International Symposium Transdisciplinary Fluid Integration, IFS-TM016, 307, 312, 2004, [Peer-reviewed]
English, International conference proceedings

Integrated Laser Propulsion/Tracking System for Laser-Driven Micro-Airplane
Itsuro Kajiwara, Kentaro Hoshino, Hiroyasu Ishikawa, Yoshichika Shimane, Takashi Yabe, Shigeaki Uchida
Theoretical and Applied Mechanics Japan, 53, 115, 124, 2004, [Peer-reviewed]
English, Scientific journal

Tracking control for laser-driven micro-airplane
Hoshino K, Kajiwara, I., Hara S, Ishikawa H, Shiokata D
Proceedings of the IEEE International Conference on Control Applications, 1, 1, 6, 2004, [Peer-reviewed]
English, International conference proceedings

Integrated actuator/control design of smart pantograph mechanism for vibration suppression
Iwadare M, Kajiwara I, Tsuchiya R, Horie M
Proceedings of the IEEE International Conference on Control Applications, 2, 1717, 1722, 2004, [Peer-reviewed]
English, International conference proceedings

Laser-driven vehicles - from inner-space to outer-space
T Yabe, C Phipps, K Aoki, M Yamaguchi, R Nakagawa, C Baasandash, Y Ogata, M Shiho, G Inoue, M Onda, K Horioka, Kajiwara, I, K Yoshida
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 77, 2, 243, 249, Jul. 2003, [Peer-reviewed]
English, Scientific journal

Motion and vibration control of flexible-link mechanism with smart structure
C Nishidome, Kajiwara, I
JSME INTERNATIONAL JOURNAL SERIES C-MECHANICAL SYSTEMS MACHINE ELEMENTS AND MANUFACTURING, 46, 2, 565, 571, Jun. 2003, [Peer-reviewed]
English, Scientific journal

Control of wing for micro-airplane with smart material and laser
Kajiwara, I, H Ishikawa, S Furuya, T Yabe, C Nishidome
BEAMED ENERGY PROPULSION, 664, 545, 556, 2003, [Peer-reviewed]
English, International conference proceedings

Optimization of Smart Structure For Realizing High Controllability　　　　　　　　　　　　　　　
Omori, T, Kajiwara, I.
Proceedings of the 2003 JSME-IIP/ASME-ISPS Joint Conference on Micromechatronics for Information and Precision Equipment, 03-208, 183, 184, 2003, [Peer-reviewed]
English, International conference proceedings

Optimal Design of Smart Carriage Arm in Magnetic Disk Drive for Vibration Suppression
Ohashi, F, Kajiwara, I, Iwadare, M, Arisaka, T
Proceedings of the 2003 JSME-IIP/ASME-ISPS Joint Conference on Micromechatronics for Information and Precision Equipment, 03-208, 181, 182, 2003, [Peer-reviewed]
English, International conference proceedings

Simultaneous design of piezoelectric shape and control system for smart structures (shape optimization of multiple piezoelectric actuators)
Kajiwara I, Uehara M
Transactions of the Japan Society of Mechanical Engineers Series C, 69, 684, 2093, 2100, The Japan Society of Mechanical Engineers, 2003, [Peer-reviewed]
Japanese, Scientific journal

Hybrid control of motion and vibration for smart flexible-link mechanism
Nishidome C, Kajiwara, I., Nagamatsu A
Transactions of the Japan Society of Mechanical Engineers Series C, 69, 677, 10, 17, The Japan Society of Mechanical Engineers, 2003, [Peer-reviewed]
Japanese, Scientific journal

Microairplane propelled by laser driven exotic target
T Yabe, C Phipps, M Yamaguchi, R Nakagawa, K Aoki, H Mine, Y Ogata, C Baasandash, M Nakagawa, E Fujiwara, K Yoshida, A Nishiguchi, Kajiwara, I
APPLIED PHYSICS LETTERS, 80, 23, 4318, 4320, Jun. 2002, [Peer-reviewed]
English, Scientific journal

Position and Force Control of 2-Link Manipulator Using Mixed H2/H-infinity Control　　　　　　　　　　　　　　　
Kajiwara, I, Yambe, K, Nishidome, C
Proceedings of the First Asian Conference on Multibody Dynamics, 02-202, 41, 48, 2002, [Peer-reviewed]
English, International conference proceedings

Motion and Vibration Control of Flexible-Link Mechanism with Smart Structure　　　　　　　　　　　　　　　
Nishidome, C, Kajiwara, I
Proceedings of the First Asian Conference on Multibody Dynamics, 02-202, 49, 56, 2002, [Peer-reviewed]
English, International conference proceedings

Hybrid control of motion and vibration for smart flexible-link mechanism
C Nishidome, Kajiwara, I
SICE 2002: PROCEEDINGS OF THE 41ST SICE ANNUAL CONFERENCE, VOLS 1-5, 1129, 1134, 2002, [Peer-reviewed]
English, International conference proceedings

Simultaneous design of mechanism and control system for smart structures (Optimization of piezoelectric placement and application to magnetic disk drive)
F Ohashi, Kajiwara, I., T Omori, T Arisaka
SICE 2002: PROCEEDINGS OF THE 41ST SICE ANNUAL CONFERENCE, VOLS 1-5, 1117, 1122, 2002, [Peer-reviewed]
English, International conference proceedings

Design of shape and control system for micro-airplane development
H Ishikawa, Kajiwara, I, T Yabe
SICE 2002: PROCEEDINGS OF THE 41ST SICE ANNUAL CONFERENCE, VOLS 1-5, 599, 604, 2002, [Peer-reviewed]
English, International conference proceedings

Simultaneous Optimal Design of Piezoelectric Shape/Placement and Control System for Smart Structures
Itsuro Kajiwara, Manabu Uehara, Takahiro Omori, Fumitake Ohashi
Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, 68, 674, 2925, 2932, 2002, [Peer-reviewed]
English, Scientific journal

Laser-driven vehicles - from inner-space to outer-space
T Yabe, C Phipps, K Aoki, M Yamaguchi, Y Ogata, M Shiho, G Inoue, M Onda, K Horioka, Kajiwara, I., K Yoshida
HIGH-POWER LASER ABLATION IV, PTS 1 AND 2, 4760, II, 867, 878, 2002, [Peer-reviewed]
English, International conference proceedings

Proposal and Demonstration of Laser-Driven Micro-Airplane　　　　　　　　　　　　　　　
Yabe, T. Phipps, C. Aoki, K. Yamaguchi, M. Nakagawa, R. Mine, H. Ogata, Y. Baasandash, C. Nakagawa, M. Fujiwara, E. Yoshida, Kajiwara, I
Journal of Plasma and Fusion Research, 77, 12, 1177, 1179, 2001
Japanese, Scientific journal

Motion and Vibration Control of Flexible-Link Mechanism with Smart Structure
Itsuro Kajiwara, Chiaki Nishidome, Norihito Sakakibara, Manabu Uehara, Akio Nagamatsu
Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C, 67, 659, 2173, 2180, 2001
English, Scientific journal

A control method for non-linear time-varying system using mixed H2/H-infinity control: Position and force control of 2-link manipulator
Kajiwara, I., Yambe, K, Nishidome, C
Proceedings of the ASME Design Engineering Technical Conference, VIB-21326, 2001, [Peer-reviewed]
English, International conference proceedings

Design of shape and control system for smart structures with piezoelectric films
Kajiwara I, Uehara M
Proceedings of 19th AIAA Applied Aerodynamics Conference, 2001-1555, 2001, [Peer-reviewed]
English, International conference proceedings

Integrated design of aerodynamics and control system for Micro Air Vehicles
Kajiwara, I, RT Haftka
JSME INTERNATIONAL JOURNAL SERIES C-MECHANICAL SYSTEMS MACHINE ELEMENTS AND MANUFACTURING, 43, 3, 684, 690, Sep. 2000, [Peer-reviewed]
English, Scientific journal

Motion and Vibration Control in Smart Flexible Link Mechanism　　　　　　　　　　　　　　　
Kajiwara, I. Nishidome, C. Sakakibara, N
Proceedings of International Symposium on Robotics and Automation 2000, 250, 255, 2000, [Peer-reviewed]
English, International conference proceedings

Integrated design of aerodynamics and control system for micro air vehicles
Itsuro Kajiwara, Raphael T. Haftka
JSME International Journal, Series C: Mechanical Systems, Machine Elements and Manufacturing, 43, 3, 684, 690, JSME, 2000, [Peer-reviewed]
English, Scientific journal

Optimization for vibration problems: Junction layout of a combined structure under oscillation
Y Kawabe, S Yoshida, S Saegusa, Kajiwara, I, A Nagamatsu
JOURNAL OF MECHANICAL DESIGN, 121, 2, 188, 194, Jun. 1999, [Peer-reviewed]
English, Scientific journal

Feedback Active Noise Control with Multiple Control Sources based on Modal Analysis
Hiroshi Shimojima, Yoshihiro Matsunaga, Sekiya Koike, Itsuro Kajiwara
Transactions of the Japan Society of Mechanical Engineers Series C, 65, 633, 1849, 1856, The Japan Society of Mechanical Engineers, Jan. 1999, [Peer-reviewed]
Japanese, Scientific journal

Structural dynamic design considering controllability and stability
Kajiwara I, Nagamatsu A
Proceedings of the IEEE International Conference on Systems, Man and Cybernetics, 3, 152, 157, 1999, [Peer-reviewed]
English, International conference proceedings

Integrated design of structure and control system considering performance and stability
Kajiwara Itsuro, Nagamatsu Akio
Proceedings of IEEE Conference on Control Applications, 86, 91, 1999, [Peer-reviewed]
English, International conference proceedings

Simultaneous optimum design of shape and control system for micro air vehicles
Kajiwara Itsuro, Haftka Raphael T
Proceedings of 40th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, AIAA-1999-1391, 1612, 1621, 1999, [Peer-reviewed]
English, International conference proceedings

Robust identification and control design for truck cab model device
ZY Guo, Kajiwara, I, A Nagamatsu
JSME INTERNATIONAL JOURNAL SERIES C-MECHANICAL SYSTEMS MACHINE ELEMENTS AND MANUFACTURING, 41, 2, 171, 177, Jun. 1998, [Peer-reviewed]
English, Scientific journal

H∞ Control Design of Experimental State-Space Modeling for Vehicle Vibration Suppression　　　　　　　　　　　　　　　
Guo, Z., Kajiwara, I., Nagamatsu, A
SAE Transactions, 106, 6, 2812, 2817, 1998, [Peer-reviewed]
English, Scientific journal

Modeling and Active Noise Control of One Dimensional Duct Based on Modal Analysis and LMI
Itsuro Kajiwara, Masanao Fukuda, Hiroshi Shimojima
Transactions of the Japan Society of Mechanical Engineers Series C, 64, 621, 1668, 1675, The Japan Society of Mechanical Engineers, Jan. 1998, [Peer-reviewed]
Japanese, Scientific journal

A Control Method for Non-Linear Time-Varying System Using Mixed H2/H∞Control (Position and Force Control of 2–Link Manipulator)
Itsuro Kajiwara, Katsuhiro Yambe, Hiroshi Shimojima
Transactions of the Japan Society of Mechanical Engineers Series C, 64, 626, 3839, 3846, The Japan Society of Mechanical Engineers, Jan. 1998, [Peer-reviewed]
Japanese, Scientific journal

Structural topology optimization by genetic algorithm (approaches for improvement of calculation efficiency)
Kajiwara Itsuro, Nagamatsu Akio
Proceedings of the International Conference on Inverse Problems in Engineering, 253, 260, 1998, [Peer-reviewed]
English, International conference proceedings

Integration of experimental state-space modeling based on ERA and H-infinity control design
Kajiwara, I., ZY Guo, A Nagamatsu
JSME INTERNATIONAL JOURNAL SERIES C-MECHANICAL SYSTEMS MACHINE ELEMENTS AND MANUFACTURING, 40, 2, 197, 202, Jun. 1997, [Peer-reviewed]
English, Scientific journal

Integration of experimental state-space modeling based on ERA and H-infinity control design
Kajiwara, I, ZY Guo, A Nagamatsu
JSME INTERNATIONAL JOURNAL SERIES C-MECHANICAL SYSTEMS MACHINE ELEMENTS AND MANUFACTURING, 40, 2, 197, 202, Jun. 1997, [Peer-reviewed]
English, Scientific journal

Structural Topology Optimization for Dynamical Design　　　　　　　　　　　　　　　
Kajiwara, I. Nagamatsu, A. Kawabe, Y. Yoshida, S
Proceedings of JSME International Symposium on Optimization and Innovative Design, CD-ROM, #97-210, 1997, [Peer-reviewed]
English, International conference proceedings

H∞ control design of experimental state-space modeling for vehicle vibration suppression
Zhongyang Guo, Itsuro Kajiwara, Akio Nagamatsu, Tsutomu Sonehara
SAE Technical Papers, P-309, 2, 631, 637, 1997, [Peer-reviewed]
English, International conference proceedings

Robust identification and control design for engine mount
ZY Guo, H Guan, ZZ Hu, Kajiwara, I, A Nagamatsu
PROCEEDINGS OF THE 36TH IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-5, 858, 859, 1997, [Peer-reviewed]
English, International conference proceedings

State-space modeling, uncertainty descriptions and H∞/μ/ν control design for vibration suppression
Guo Zhongyang, Kajiwara I, Nagamatsu A
Proceedings of 38th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, AIAA-97-1399, 655, 663, 1997, [Peer-reviewed]
English, International conference proceedings

Vibration analysis in high-frequency domains based on finite-element method and modal analysis
Kajiwara Itsuro, Takahashi Naoki, Nagamatsu Akio
Transactions of the Japan Society of Mechanical Engineers Series C, 62, 599, 2556, 2562, The Japan Society of Mechanical Engineers, Jul. 1996, [Peer-reviewed]
Japanese, Scientific journal

Integrated Optimum Design of Structure and Control System with LQR and H-infinity Controller　　　　　　　　　　　　　　　
Kajiwara, I, Nagamatsu, A
Proceedings of First European Conference on Structural Control, 1, 8, 1996, [Peer-reviewed]
English, International conference proceedings

H-infinity Robust Vibration Control of a Truck Cab using Modal Analysis
Sonehara, T, Kawai, K, Kubo, Y, Kajiwara, I., Nagamatsu, A.
Journal of JSAE, 27, 4, 83, 87, 自動車技術会, 1996, [Peer-reviewed]
Japanese

Concurrent Optimum Design of Structure and H∞ Control System by Genetic Algorithm　　　　　　　　　　　　　　　
Kajiwara, I. Nagamatsu, A
Proceedings of the 3rd International Conference on Motion and Vibration Control, 3, 327, 332, 1996
English, International conference proceedings

Integrated optimum design of structure and servosystem with dynamic compensator
I. Kajiwara, A. Nagamatsu, K. Seki, Y. Kotani
37th AIAA/ASME/ASCE/AHS/ASC Structure, Structural Dynamics and Materials Conference, CP962, 1005, 1015, American Institute of Aeronautics and Astronautics Inc, AIAA, 1996, [Peer-reviewed]
English, International conference proceedings

Structural topology optimization by genetic algorithm (improvement of calculation efficiency for real system optimization)
Kajiwara Itsuro, Sasaki Yasutaka, Nagamatsu Akio
Transactions of the Japan Society of Mechanical Engineers Series C, 62, 597, 1731, 1738, 1996, [Peer-reviewed]
Japanese, Scientific journal

Integrated Optimum Design of Structure and H∞ Control System
Tsujioka, K, Kajiwara, I, Nagamatsu, A
AIAA Journal, 34, 1, 159, 165, 1996
English, Scientific journal

Simultaneous Optimum Design of the Structure and H∞ Control System.
Kazuaki Tsujioka, Itsuro Kajiwara, Akio Nagamatsu
Transaction of the Japan Society of Mechanical Engineers, 61, 583, 967, 974, 1995, [Peer-reviewed]
Japanese, Scientific journal

Integrated Optimum Design of the Structure and H∞ Control System using Genetic Algorithm
Kazuaki Tsujioka, Itsuro Kajiwara, Akio Nagamatsu
Transactions of the Japan Society of Mechanical Engineers, 61, 587, 2704, 2711, Jan. 1995, [Peer-reviewed]
Japanese, Scientific journal

Structural Shape Optimization of Vibration Characteristics
Itsuro Kajiwara, Yoshiko Kawabe, Shinobu Yoshida, Shozo Saegusa, Akio Nagamatsu
Transactions of the Japan Society of Mechanical Engineers Series C, 61, 587, 2662, 2667, The Japan Society of Mechanical Engineers, Jan. 1995, [Peer-reviewed]
Japanese, Scientific journal

Structural shape optimization for improvement of dynamical characteristics
Kajiwara I, Nagamatsu A, Kawabe Y, Yoshida S, Saegusa S
Proceedings of ASME PVP Conference, 305, 279, 283, 1995, [Peer-reviewed]
English, International conference proceedings

Simultaneous optimum design of structure and control system using complex method
Tsujioka Kazuaki, Kajiwara Itsuro, Nagamatsu Akio
Proceedings of ASME Pressure Vessels and Piping Division (Publication) PVP, 305, 297, 303, 1995, [Peer-reviewed]
English, International conference proceedings

Integrated optimum design of structure and control system by modal analysis
Kajiwara I, Tsujioka K, Nagamatsu A
Proceedings of 1995 ASME Design Engineering Division (Publication) DE, 84, 3 Pt C, 487, 494, 1995, [Peer-reviewed]
English, International conference proceedings

Integrated optimum design of structure and H^∞ control system
Tsujioka K, Kajiwara, I., Nagamatsu A
Proceedings of AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, 5, 2983, 2991, 1995, [Peer-reviewed]
English, International conference proceedings

Optimum Design of Structure and Control Systems by Modal Analysis
Itsuro Kajiwara, Akio Nagamatsu
Transactions of the Japan Society of Mechanical Engineers Series C, 60, 570, 368, 373, The Japan Society of Mechanical Engineers, Jan. 1994
Japanese, Scientific journal

Approach for simultaneous optimization of a structure and control system
I. Kajiwara, K. Tsujioka, A. Nagamatsu
AIAA Journal, 32, 4, 866, 873, 1994, [Peer-reviewed]
English, Scientific journal

H-INFINITY CONTROL-SYSTEM BY MODAL-ANALYSIS FOR SUPPRESSION OF STRUCTURAL VIBRATION
KAJIWARA, I, A NAGAMATSU
PROCEEDINGS OF THE 12TH INTERNATIONAL MODAL ANALYSIS CONFERENCE, VOLS 1 AND 2, 2251, 591, 597, 1994, [Peer-reviewed]
English, International conference proceedings

OPTIMUM DESIGN OF OPTICAL PICK-UP BY ELIMINATION OF RESONANCE PEAKS
KAJIWARA, I, A NAGAMATSU
JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME, 115, 4, 377, 383, Oct. 1993, [Peer-reviewed]
English, Scientific journal

Optimum Control System Design for High Degree-of-Freedom Structures　　　　　　　　　　　　　　　
Kajiwara, I, Nagamatsu, A
Proceedings of Asia-Pacific Vibration Conference ’93, 3, 929, 934, 1993, [Peer-reviewed]
English, International conference proceedings

Design of Robust Vibration Control System using Modal Analysis and H-infinity Control　　　　　　　　　　　　　　　
Kajiwara, I., Nagamatsu, A
Proceedings of Asia-Pacific Vibration Conference ’93, 3, 935, 940, 1993, [Peer-reviewed]
English, International conference proceedings

Simultaneous optimum design of structure and control system to assure stability of higher modes
Kajiwara, I., Tsujioka K, Nagamatsu A
Proceedings of AIAA/ASME Structures, Structural Dynamics and Materials Conference, pt 3, 1409, 1417, 1993, [Peer-reviewed]
English, International conference proceedings

Simaltaneous Optimum Design of Structure and Control System using Complex Method
Tsujioka, K., Kajiwara, I., Nagamatsu, A.
Transaction of the Japan Society of Mechanical Engineers, 59, 563, 2124, 2131, 1993
Japanese, Scientific journal

Simultaneous optimum design of structure and control systems by sensitivity analysis
Itsuro Kajiwara, Akio Nagamatsu
Finite Elements in Analysis and Design, 14, 2-3, 187, 195, 1993, [Peer-reviewed]
English, Scientific journal

Optimum design of structures by sensitivity analysis
Itsuro Kajiwara, Akio Nagamatsu
Finite Elements in Analysis and Design, 14, 2-3, 101, 110, 1993, [Peer-reviewed]
English, Scientific journal

OPTIMUM DESIGN OF STRUCTURE BY SENSITIVITY ANALYSIS
KAJIWARA, I, A NAGAMATSU
PROCEEDINGS OF THE 11TH INTERNATIONAL MODAL ANALYSIS CONFERENCE, VOLS 1 AND 2, 1923, pt 2, 883, 889, 1993, [Peer-reviewed]
English, International conference proceedings

Reduced Modelling of Structure of Large Degrees-of-Freedom and Optimum Design of Its Control System
梶原逸朗, 長松昭男, 稲垣亨
Transactions of the Society of Instrument and Control Engineers, 28, 3, 383, 391, The Society of Instrument and Control Engineers, 1992, [Peer-reviewed]
Japanese, Scientific journal, The authors propose a method to design the optimum control system toward flexible structural systems. The mechanical structures used to be modelled by FEM. As a result, these models have large degrees of freedom. The small model can be obtained by identifying the spatial matrices of the structure from the frequency response functions calculated by FEM. The optimum control system is easily designed by applying the optimum control theory to the identified system. However, the stability of the control system is not always guaranteed because the machanical system is generally identified with small degree of freedom in which high order modes are ignored. An optimization method of the control system which guarantees the stability of the actual system of large degrees of freedom is proposed in this paper. The characteristics of both the identified and the actual systems are simultaneously optimized by the proposed method based on sensitivity analysis and nonlinear programming. An application to a FEM model and experimental result verify the effectiveness of the proposed method.

Optimum Design of Control System for Large Degrees-of-Freedom Structure to Assure Stability Against High Mode Vibrational Disturbance　　　　　　　　　　　　　　　
Kajiwara, I. Nagamatsu, A
Proceedings of AIAA 33rd SDM Conference, AIAA-92-2323-CP, 1595, 1603, 1992, [Peer-reviewed]
English, International conference proceedings

H∞ Robust Vibration Control of Continuous Structures using Modal Analysis
梶原逸朗, 稲垣亨, 長松昭男
Transactions of the Japan Society of Mechanical Engineers, 58, 555, 3238, 3245, The Japan Society of Mechanical Engineers, 1992, [Peer-reviewed]
Japanese, Scientific journal, In this paper, we consider a robust vibration control of a continuous body structure, such as plate structure. Modeling of a complex structure composed by a continuous body is difficult. FEM is usually used for direct modeling of an actual structure. However, FEM model has originally structural errors and FEM model has so large degree-of-freedom (DOF) that a vibration control system can hardly be designed. This model is reduced to modal coordinate in order to decrease DOF of FEM model. However, the control system becomes unstable frequently because of structural errors and ignored high order modes. We show a design method of a robust vibration control system based on H^∞ control theory. The robustness against structural errors and ignored high order modes can be realized by H^∞ control. Both the control performance and the robustness of the closed loop system can be improved by applying adequate weighting functions of H^∞ control. The effectiveness of the method is verified by the results of both analysis and experiment.

Optimum Design of Vibration Control System using Modal Analysis and Sensitivity Analysis
Itsuro Kajiwara, Tohru Inagaki, Akio Nagamatsu
Transactions of the Japan Society of Mechanical Engineers Series C, 58, 552, 2365, 2372, The Japan Society of Mechanical Engineers, Jan. 1992, [Peer-reviewed]
Japanese, Scientific journal

Modelling and Optimum Design of the Control System based on the Identification of Spatial Matrices
Itsuro Kajiwara, Akio Nagamatsu, Masaaki Okuma, Toru Inagaki
Transactions of the Japan Society of Mechanical Engineers Series C, 58, 549, 1385, 1391, Jan. 1992, [Peer-reviewed]
Japanese, Scientific journal

Optimum design of structure by sensitivity analysis
Kajiwara, I., Nagamatsu A
Proceedings of the 1991 Asia-Pacific Vibration Conference, 2, 61, 66, 1991, [Peer-reviewed]
English, International conference proceedings

Approach to simultaneous optimum design of structure and control systems by sensitivity analysis
Kajiwara I, Nagamatsu A
Proceedings of American Society of Mechanical Engineers, Design Engineering Division, 38, 179, 184, 1991, [Peer-reviewed]
English, International conference proceedings

An Approach of Optimal Design for Simultaneous Optimization of Structure and Control Systems using Sensitivity Analysis
梶原逸朗, 長松昭男
Transactions of The Society of Instrument and Control Engineers, 26, 10, 1140, 1147, 1990, [Peer-reviewed]
Japanese, Scientific journal

Vibration Control in a Box-Type Structure by Dual Dynamic Absorbers
Shigeo Yamashita, Itsuro Kajiwara, Kazuto Seto
Transactions of the Japan Society of Mechanical Engineers Series C, 56, 528, 2107, 2114, The Japan Society of Mechanical Engineers, Jan. 1990, [Peer-reviewed]
Japanese, Scientific journal

A Structural Optimization Method considering Time History Response
Itsuro Kajiwara, Akio Nagamatsu
Transactions of the Japan Society of Mechanical Engineers Series C, 56, 522, 391, 397, The Japan Society of Mechanical Engineers, Jan. 1990, [Peer-reviewed]
Japanese, Scientific journal

Design of an Optical Servosystem Using a Structural Optimizing Method Considering Controllability (3rd Report, An Application of the Pole-Zero Cancellation Method to Development of Optical Pick-Up)
Itsuro Kajiwara, Kazuto Seto, Akio Nagamatsu, Hiroaki Morifuji, Nobuyuki Nakae
Transactions of the Japan Society of Mechanical Engineers Series C, 55, 516, 2045, 2052, The Japan Society of Mechanical Engineers, Jan. 1989, [Peer-reviewed]
Japanese, Scientific journal

Design of an Optical Servosystem using a Structural Optimizing Method considering Controllability (1st Report, A Total Design combining a Structural System with a Control System by way of Vibration Nodes)
Kazuto Seto, Itsuro Kajiwara, Akio Nagamatsu, Hiroaki Morifuji
Transactions of the Japan Society of Mechanical Engineers Series C, 55, 516, 2029, 2036, The Japan Society of Mechanical Engineers, Jan. 1989, [Peer-reviewed]
Japanese, Scientific journal

Design of an Optical Servosystem Using a Structural Optimizing Method Considering Controllability (2nd Report, the Structural Optimization of an Optical Pick-Up Model Using the Pole-Zero Cancellation Method)
Itsuro Kajiwara, Kazuto Seto, Akio Nagamatsu
Transactions of the Japan Society of Mechanical Engineers Series C, 55, 516, 2037, 2044, The Japan Society of Mechanical Engineers, Jan. 1989, [Peer-reviewed]
Japanese, Scientific journal

Technique of structural dynamic optimization using sensivities of resonance and anti-resonance frequencies
Kajiwara I, Agamatsu A, Seto K
Proceedings of ASME PVP Conference, 179, 161, 167, 1989, [Peer-reviewed]
English, International conference proceedings

A Technique of Structural Dynamic Optimization using Resonance and Anti-Resonance Sensitivities
Itsuro Kajiwara, Masaaki Ookuma, Akio Nagamatsu, Kazuto Seto
Transactions of the Japan Society of Mechanical Engineers Series C, 54, 505, 2084, 2091, The Japan Society of Mechanical Engineers, Jan. 1988, [Peer-reviewed]
Japanese, Scientific journal

青果物の非接触非破壊品質評価システム
細矢直基, 梶原逸朗, 芝浦工業大学特別教育・研究報告集(CD-ROM), 2016, 288‐291, 31 Jul. 2017
Japanese

青果物の非接触非破壊品質評価システム
細矢直基, 梶原逸朗, 芝浦工業大学特別教育・研究報告集(CD-ROM), 2015, 284‐287, 287, 30 Sep. 2016
芝浦工業大学連携推進部, Japanese

レーザ誘起プラズマによるモーメント加振法
細矢直基, 梶原逸朗, 芝浦工業大学特別教育・研究報告集(CD-ROM), 2014, 247, 250, 30 Jun. 2015
芝浦工業大学連携推進部, Japanese

レーザーブレイクダウンプラズマによる衝撃波を用いた微小空間のための音響加振法
細矢直基, 梶原逸朗, 芝浦工業大学特別教育・研究報告集(CD-ROM), 2012, 136, 139, 28 Jun. 2013
Japanese

スマート構造による振動／騒音の制御技術　　　　　　　　　　　　　　　
梶原 逸朗, 日本機械学会D&D2010・夏の学校「能動制御／騒音制御の基礎」テキスト, 25, 34, 2012
Japanese, Introduction scientific journal

振動の抑制・アクティブ制御　　　　　　　　　　　　　　　
梶原 逸朗, 日本機械学会関西支部・第320回講習会「実務者のための振動基礎と制振・制御技術」, 51, 76, 2012
Japanese, Introduction scientific journal

レーザー加振に基づくヘルスモニタリング
細矢直基, 梶原逸朗, 芝浦工業大学特別教育・研究報告集(CD-ROM), 2010, 112, 115, 01 Dec. 2011
Japanese

13・5 最適化(13.機械力学・計測制御,<特集>機械工学年鑑)
梶原 逸朗, 日本機械学會誌, 111, 1077, 686, 687, 05 Aug. 2008
一般社団法人日本機械学会, Japanese

振動の制御技術　　　　　　　　　　　　　　　
梶原逸朗, 日本機械学会講習会「振動解析入門－振動の基礎から実験モード解析，CAE解析まで－」テキスト, 06-80, 53, 61, 2006

スマート構造における構造と制御の複合領域最適化
梶原逸朗, 機械の研究, 58, 9, 937, 944, 2006
養賢堂, Japanese

レーザー推進マイクロ飛行機と複合領域の統合的最適化　　　　　　　　　　　　　　　
梶原逸朗, 矢部, 日本航空宇宙学会誌, 52, 608, 237, 242, 2004

水とレーザー駆動による紙飛行機　　　　　　　　　　　　　　　
矢部孝, 梶原逸朗, 日本航空宇宙学会誌, 51, 595, 208, 212, 2003

平成14年度加速度計則標準の現状と動向及び我が国産業界のニーズに関する調査研究報告書　　　　　　　　　　　　　　　
梶原逸朗, (社)日本機械工業連合会・(財)日本産業技術振興協会, 日機連14標準化-8, 2003

圧電フィルムによるOA機器の振動制御　　　　　　　　　　　　　　　
江連勝彦, 猿渡克巳, 梶原逸朗, 小野測器技報, 14, 6, 10, 2001

情報機器の構造設計に基づく制振技術
梶原逸朗, 機械の研究, 53, 12, 1223, 1230, 2001
養賢堂, Japanese

振動制御のためのスマート構造の設計　　　　　　　　　　　　　　　
梶原逸朗, 制振工学研究会 「2000技術交流会」資料集, 44, 50, 2000

情報機器の機構設計／制御の動向　　　　　　　　　　　　　　　
梶原逸朗, 日本機械学会講習会「機構制御の最先端と情報・医療福祉機器への応用」テキスト, 00-32, 45, 52, 2000

振動制御のためのスマート構造の設計　　　　　　　　　　　　　　　
梶原逸朗, 自動車技術会シンポジウム「自動車の振動騒音とうまくつきあう方法」, 10-00, 13, 19, 2000

制御性と安定性の向上を目指した構造と制御の同時設計
梶原逸朗, システム／制御／情報, 44, 11, 623, 631, 2000

構造系と制御系の最適設計　　　　　　　　　　　　　　　
梶原逸朗, 日本機械学会講習会「動システムの設計と最適化に関する先端技術」テキスト, 930-3, 95, 105, 1993

感度解析による最適設計　　　　　　　　　　　　　　　
梶原逸朗, 機械の研究, 43, 3, 351, 356, 1991
Japanese, Introduction scientific journal

機械工学のための力学　　　　　　　　　　　　　　　
梶原 逸朗
丸善出版, 2014, [Contributor]

シミュレーション辞典　　　　　　　　　　　　　　　
梶原 逸朗
日本シミュレーション学会, 2012, [Contributor]

制振工学ハンドブック　　　　　　　　　　　　　　　
梶原 逸朗
コロナ社, 2008, [Contributor]

機械工学のための数学I －基礎数学－　　　　　　　　　　　　　　　
梶原 逸朗
朝倉書店, 2007, [Contributor]

機械工学のための数学Ⅰ　　　　　　　　　　　　　　　
梶原 逸朗
朝倉書店, 2007, [Contributor]

構造工学ハンドブック　　　　　　　　　　　　　　　
梶原 逸朗
丸善, 2004, [Contributor]

最適設計ハンドブック　　　　　　　　　　　　　　　
梶原 逸朗
朝倉書店, 2003, [Contributor]

モード解析ハンドブック　　　　　　　　　　　　　　　
梶原 逸朗
コロナ社, 1999, [Contributor]

音・振動のモード解析と制御　　　　　　　　　　　　　　　
梶原 逸朗
日本音響学会編、音響テクノロジーシリーズ,コロナ社, 1996, [Contributor]

自動車適用のためのデータ駆動型制御器設計法　　　　　　　　　　　　　　　
矢作修一, 梶原逸朗
第68回自動制御連合講演会, 01 Nov. 2025, Japanese, Oral presentation
01 Nov. 2025 - 02 Nov. 2025

改良型Grey wolf optimizerを用いた自動車駆動系の振動制御性能向上　　　　　　　　　　　　　　　
柴田洸希, 米沢平成, 梶原逸朗
日本機械学会 2025年度年次大会, 08 Sep. 2025, Japanese, Oral presentation
07 Sep. 2025 - 10 Sep. 2025

レーザー加振を用いたコンクリート用再生骨材モデルの境界層におけるばね特性の推定　　　　　　　　　　　　　　　
小野田陸斗, 土肥裕介, 米沢平成, 橋本勝文, 遠藤哲平, 齊藤亮介, 梶原逸朗
日本機械学会 2025年度年次大会, 08 Sep. 2025, Japanese, Oral presentation
07 Sep. 2025 - 10 Sep. 2025

静電吸着により把持を行っているDEAグリッパの振れ止め制御に関する研究　　　　　　　　　　　　　　　
比留田稔樹, 佐野統惟, 梶原逸朗, 細矢直基, 前田真吾, 新竹純, 髙木賢太郎
Dynamics and Design Conference 2025, 25 Aug. 2025, Japanese, Oral presentation
25 Aug. 2025 - 28 Aug. 2025

ばねと質量を用いた誘電エラストマーアクチュエータ　　　　　　　　　　　　　　　
笹野翔太郎, 冨髙達弥, 矢作修一, 米沢平成, 米沢安成, 梶原逸朗, 細矢直基
Dynamics and Design Conference 2025, 25 Aug. 2025, Japanese, Oral presentation
25 Aug. 2025 - 28 Aug. 2025

スパースデータ駆動モデリングを駆使したディーゼルエンジン吸排系の非線形モデル予測制御　　　　　　　　　　　　　　　
村上賢太郎, 矢作修一, 米沢平成, 米沢安成, 雉本信哉, 谷内輝, 瀬戸洋紀, 梶原逸朗
Dynamics and Design Conference 2025, 25 Aug. 2025, Japanese, Oral presentation
25 Aug. 2025 - 28 Aug. 2025

データ駆動型アプローチによるモデルフリー制御器設計法　　　　　　　　　　　　　　　
矢作修一, 梶原逸朗
情報・知能・精密機器部門講演会(IIP2025), 03 Mar. 2025, Japanese, Oral presentation
03 Mar. 2025 - 04 Mar. 2025

制御対象の入出力データを活用した非整数階微分・積分に基づく制御器の設計法　　　　　　　　　　　　　　　
米沢安成, 米沢平成, 矢作修一, 梶原逸朗
情報・知能・精密機器部門講演会(IIP2025), 03 Mar. 2025, Japanese, Oral presentation
03 Mar. 2025 - 04 Mar. 2025

静電吸着を適用したDEAによる絶縁体はりの加振に関する研究　　　　　　　　　　　　　　　
比留田稔樹, 徳重洋太, 大野純弥, 細矢直基, 前田真吾, 新竹純, 梶原逸朗, 高木賢太郎
第25回計測自動制御学会 システムインテグレーション部門講演会(SI2024), 20 Dec. 2024, Japanese, Oral presentation
18 Dec. 2024 - 20 Dec. 2024

Whale optimization algorithm を用いた自動車駆動系の振動制御器設計に関する基礎的検討　　　　　　　　　　　　　　　
米沢平成, 米沢安成, 梶原逸朗
第15回最適化シンポジウム2024, 26 Oct. 2024, Japanese, Oral presentation
26 Oct. 2024 - 27 Oct. 2024

レーザー加振を用いたウシ大腿骨の弾性率推定：脱灰処理に関する特性評価　　　　　　　　　　　　　　　
小野田陸斗, 土肥祐介, 山田悟志, 東藤正浩, 米沢平成, 梶原逸朗
Dynamics and Design Conference 2024, 03 Sep. 2024, Japanese
03 Sep. 2024 - 07 Sep. 2024

レーザー加振技術による骨の弾性異方性評価に関する研究　　　　　　　　　　　　　　　
土肥祐介, 小野田陸斗, 山田悟志, 東藤正浩, 米沢平成, 梶原逸朗
Dynamics and Design Conference 2024, 03 Sep. 2024, Japanese, Oral presentation
03 Sep. 2024 - 07 Sep. 2024

スパースデータ駆動モデリング：ディーゼルエンジンの吸排気システムへの適用　　　　　　　　　　　　　　　
谷内輝, 米沢安成, 矢作修一, 米沢平成, 瀬戸洋紀, 梶原逸朗
Dynamics and Design Conference 2024, 03 Sep. 2024, Japanese, Oral presentation
03 Sep. 2024 - 07 Sep. 2024

離散化制約下におけるサンプル値制御器を用いたパワートレインのアクティブ振動制御: 実車モデルに対する検証　　　　　　　　　　　　　　　
伊藤義房, 米沢平成, 梶原逸朗, 西留千晶, 佐藤晶太, 波多野崇, 近藤秀一, 平松繁喜, 菊池浩矢
Dynamics and Design Conference 2024, 03 Sep. 2024, Japanese, Oral presentation
03 Sep. 2024 - 07 Sep. 2024

スパースデータ駆動モデリングを用いた非線形モデル予測制御: ディーゼルエンジンの吸排気システムへの適用　　　　　　　　　　　　　　　
矢作修一, 瀬戸洋紀, 米沢安成, 梶原逸朗
第66回自動制御連合講演会, 07 Oct. 2023, Japanese, Oral presentation
07 Oct. 2023 - 08 Oct. 2023

駆動系の振動制御における切り替え型ファジィ制御を用いたバックラッシの補償　　　　　　　　　　　　　　　
河野康平, 米沢平成, 梶原逸朗
第31回インテリジェント・システム・シンポジウム, 07 Sep. 2023, Japanese
07 Sep. 2023 - 08 Sep. 2023

仮想構造物を導入した階層構造物のモデルフリー振動制御　　　　　　　　　　　　　　　
吉川元人, 米沢安成, 福嶋祐人, 米沢平成, 梶原逸朗
Dynamics and Design Conference 2023, 31 Aug. 2023, Japanese
28 Aug. 2023 - 31 Aug. 2023

自動車駆動系制御における離散値制約への対応と性能評価　　　　　　　　　　　　　　　
伊藤義房, 平田将規, 米沢平成, 佐藤晶太, 波多野崇, 西留千晶, 梶原逸朗
Dynamics and Design Conference 2023, 30 Aug. 2023, Japanese
28 Aug. 2023 - 31 Aug. 2023

レーザー加振技術を用いた骨の弾性率推定　　　　　　　　　　　　　　　
菊池大, 岩崎幹大, 山田悟史, 東藤正浩, 米沢平成, 梶原逸朗
日本機械学会 第33回バイオフロンティア講演会, 17 Dec. 2022, Japanese, Oral presentation
17 Dec. 2022 - 18 Dec. 2022

打撃試験に基づくコンクリート材の減衰特性評価に関する基礎検討　　　　　　　　　　　　　　　
岩崎幹大, 菊池大, 澤口香織, 本田真也, 菊地優, 越川武晃, 石井建, 米沢平成, 梶原逸朗
日本機械学会 第20回評価・診断に関するシンポジウム, 02 Dec. 2022, Japanese, Oral presentation
01 Dec. 2022 - 02 Dec. 2022

誘電エラストマーアクチュエータを用いたアボカドの硬さ評価　　　　　　　　　　　　　　　
磯貝航, 梶原逸朗, 前田真吾, 細矢直基
Dynamics and Design Conference 2022, 05 Sep. 2022, Japanese, Oral presentation
05 Sep. 2022 - 08 Sep. 2022

オンライン型FRITを用いた二自由度制御系の適応パラメータチューニングによる目標値追従性能／外乱抑圧性能の向上　　　　　　　　　　　　　　　
坂井達成, 矢作修一, 梶原逸朗
Dynamics and Design Conference 2022, 05 Sep. 2022, Japanese, Oral presentation
05 Sep. 2022 - 08 Sep. 2022

マルチアクチュエータによる任意構造物のモデルフリー振動制御　　　　　　　　　　　　　　　
福嶋祐人, 佐藤友人, 米沢安成, 米沢平成, 梶原逸朗
Dynamics and Design Conference 2022, 05 Sep. 2022, Japanese, Oral presentation
05 Sep. 2022 - 08 Sep. 2022

自動車駆動系の振動制御における離散値制約への対応の検討　　　　　　　　　　　　　　　
平田将規, 波多野崇, 平松繁喜, 佐藤晶太, 西留千晶, 梶原逸朗, 米沢平成
Dynamics and Design Conference 2022, 05 Sep. 2022, Japanese, Oral presentation
05 Sep. 2022 - 08 Sep. 2022

実制御対象の数理モデルを用いないアクティブ振動制御装置の構築手法　　　　　　　　　　　　　　　
米沢安成, 米沢平成, 梶原逸朗
第17回運動と振動の制御シンポジウム(MoViC2021), 10 Dec. 2021, Japanese, Oral presentation
09 Dec. 2021 - 10 Dec. 2021

レーザー誘起プラズマによるインパルス加振を用いたマンゴーの非接触非破壊硬さ評価　　　　　　　　　　　　　　　
古怒田真悟, 荒井那由他, 梶原逸朗, 細矢直基
Dynamics and Design Conference 2021, 17 Sep. 2021, Japanese, Oral presentation
13 Sep. 2021 - 17 Sep. 2021

制御入力の更新タイミングに不確かさを有する自動車駆動系のアクティブ振動制御　　　　　　　　　　　　　　　
米沢平成, 西留千晶, 波多野崇, 平松繁喜, 梶原逸朗
Dynamics and Design Conference 2021, 15 Sep. 2021, Japanese, Oral presentation
13 Sep. 2021 - 17 Sep. 2021

音響レンズを用いたレーザー誘起プラズマ衝撃波による加振法（Lamb 波の生成）　　　　　　　　　　　　　　　
若田祥, 前川知輝, 梶原逸朗, Ambroziński Łukasz, Pieczonka Łukasz, 細矢直基
Dynamics and Design Conference 2021, 15 Sep. 2021, Japanese, Oral presentation
13 Sep. 2021 - 17 Sep. 2021

誘電エラストマーアクチュエータを用いた曲面を有する機械構造物の振動制御　　　　　　　　　　　　　　　
佐々木海詩, 比留田稔樹, 梶原逸朗, 細矢直基, 前田真吾
第63回自動制御連合講演会講演論文集, 21 Nov. 2020, Japanese, Oral presentation
21 Nov. 2020 - 22 Nov. 2020

レーザー加振/計測を用いたコンクリートの硬化モニタリング　　　　　　　　　　　　　　　
佐々木源明, 竹本喜昭, 齊藤 亮介, 梶原逸朗
第63回自動制御連合講演会講演論文集, 21 Nov. 2020, Japanese, Oral presentation
21 Nov. 2020 - 22 Nov. 2020

仮想構造物を導入したマルチアクチュエータによるモデルフリー振動制御　　　　　　　　　　　　　　　
佐藤友人, 米沢平成, 米沢安成, 梶原逸朗
第63回自動制御連合講演会講演論文集, 21 Nov. 2020, Japanese, Oral presentation
21 Nov. 2020 - 22 Nov. 2020

音響レンズを用いたレーザー誘起プラズマ衝撃波による加振法　　　　　　　　　　　　　　　
細矢直基, 吉田侑樹, 前田真吾, 梶原逸朗
Dynamics and Design Conference 2020, 01 Sep. 2020, Japanese, Oral presentation
01 Sep. 2020 - 04 Sep. 2020

可変延長制御周期による影響を考慮した自動車駆動系のアクティブ振動制御　　　　　　　　　　　　　　　
米沢平成, 梶原逸朗, 西留千晶, 波多野崇, 坂田将人, 平松繁喜
Dynamics and Design Conference 2020, 01 Sep. 2020, Japanese, Oral presentation
01 Sep. 2020 - 04 Sep. 2020

マルチ誘電エラストマーアクチュエータを用いた膜構造の振動制御　　　　　　　　　　　　　　　
石原宏基, 比留田稔樹, 細矢直基, 前田真吾, 梶原逸朗
Dynamics and Design Conference 2020, 01 Sep. 2020, Japanese, Oral presentation
01 Sep. 2020 - 04 Sep. 2020

誘電エラストマーアクチュエータ加振に基づくりんごの振動計測と硬さ評価　　　　　　　　　　　　　　　
比留田稔樹, 細矢直基, 前田真吾, 梶原逸朗
Dynamics and Design Conference 2020, 01 Sep. 2020, Japanese, Oral presentation
01 Sep. 2020 - 04 Sep. 2020

制御周期制約下における自動車駆動系のバックラッシ補償　　　　　　　　　　　　　　　
米沢平成, 梶原逸朗, 西留千晶, 波多野崇, 坂田将人, 平松繁
運動と振動の制御シンポジウム2019, 04 Dec. 2019, Japanese, Oral presentation
04 Dec. 2019 - 06 Dec. 2019

非線形性を有する自動車操舵系のモデル化とモータによる角度追従制御　　　　　　　　　　　　　　　
近藤俊朗, 米沢平成, 西留千晶, 梶原逸朗, 加藤真, 近藤秀一, 波多野崇, 坂田将人, 平松繁喜
第62回自動制御連合講演会講演論文集, 08 Nov. 2019, Japanese, Oral presentation
08 Nov. 2019 - 10 Nov. 2019

誘電エラストマーアクチュエータによる加振を用いたりんごの振動特性計測　　　　　　　　　　　　　　　
比留田稔樹, 細矢直基, 前田真吾, 梶原逸朗
第62回自動制御連合講演会講演論文集, 08 Nov. 2019, Japanese, Oral presentation
08 Nov. 2019 - 10 Nov. 2019

物理機能モデルを活用した非線形システムの状態量推定　　　　　　　　　　　　　　　
米沢平成, 梶原逸朗, 西留千晶, 波多野崇, 坂田将人, 平松繁喜
第62回自動制御連合講演会講演論文集, 08 Nov. 2019, Japanese, Oral presentation
08 Nov. 2019 - 10 Nov. 2019

非接触レーザー加振／計測技術を用いたタイル構造の健全性評価　　　　　　　　　　　　　　　
鈴木健吾, 佐々木源明, 齊藤亮介, 北垣亮馬, 梶原逸朗
日本機械学会 2019年度年次大会, 09 Sep. 2019, Japanese, Oral presentation
09 Sep. 2019 - 11 Sep. 2019

レーザー音響加振／計測技術を用いたパイプ構造の損傷検知　　　　　　　　　　　　　　　
梶原逸朗, 秋田涼佑, 細矢直基
日本機械学会 2019年度年次大会, 09 Sep. 2019, Japanese, Oral presentation
09 Sep. 2019 - 11 Sep. 2019

実験モード解析によるポポー果実の非接触非破壊硬度評価　　　　　　　　　　　　　　　
荒井那由他, 高橋健太郎, 細矢直基, 梶原逸朗
Dynamics and Design Conference 2019, 27 Aug. 2019, Japanese, Oral presentation
27 Aug. 2019 - 30 Aug. 2019

パラメータの不確かさを有するアクチュエータを用いたモデルフリー振動制御　　　　　　　　　　　　　　　
米沢安成, 米沢平成, 梶原逸朗
Dynamics and Design Conference 2019, 27 Aug. 2019, Japanese, Oral presentation
27 Aug. 2019 - 30 Aug. 2019

NOx排出量規制を考慮したディーゼルエンジンの運用コスト低減のための最適制御　　　　　　　　　　　　　　　
三輪 柚里江, 塙 哲史, 佐藤 淳一, 花村 良文, 石塚 真一, 梶原逸朗
Dynamics and Design Conference 2019, 27 Aug. 2019, Japanese, Oral presentation
27 Aug. 2019 - 30 Aug. 2019

誘電エラストマーアクチュエータを用いた膜構造の振動制御　　　　　　　　　　　　　　　
比留田稔樹, 平原隼人, 梶原逸朗, 細矢直基, 前田真吾
Dynamics and Design Conference 2019, 27 Aug. 2019, Japanese, Oral presentation
27 Aug. 2019 - 30 Aug. 2019

レーザー誘起プラズマで生成された衝撃波によるインパルス加振を用いた透明高分子材料へのLamb波生成　　　　　　　　　　　　　　　
勝又翼, 細矢直基, 神田淳, 梶原逸朗
第17回評価・診断に関するシンポジウム, 06 Dec. 2018, Japanese, Oral presentation
[Domestic Conference]

任意構造物の制振を可能とするモデルフリー振動制御　　　　　　　　　　　　　　　
米沢平成, 梶原逸朗, 大西諒史, 米沢安成
第61回自動制御連合講演会, 18 Nov. 2018, Japanese, Oral presentation
[Domestic Conference]

実験モード解析による「太陽のタマゴ」の硬さ評価　　　　　　　　　　　　　　　
細矢直基, 出西勇気, 高橋健太郎, 梶原逸朗
Dynamics and Design Conference 2018, 28 Aug. 2018, Japanese, Oral presentation
[Domestic Conference]

DEAによる構造物の振動制御に関する研究(DEAの積層構成と制御効果の考察)　　　　　　　　　　　　　　　
平原隼人, 梶原逸朗, 細矢直基, 前田真吾
Dynamics and Design Conference 2018, 28 Aug. 2018, Japanese, Oral presentation
[Domestic Conference]

バックラッシ特性を再現する自動車駆動系の基礎実験装置と振動制御　　　　　　　　　　　　　　　
米沢平成, 梶原逸朗, 佐藤晶太, 西留千晶, 坂田将人, 波多野崇, 平松繁喜
Dynamics and Design Conference 2018, 28 Aug. 2018, Japanese, Oral presentation
[Domestic Conference]

混合H2/H∞スライディングモード制御によるギヤバックラッシを含む自動車駆動系の振動制御　　　　　　　　　　　　　　　
米沢平成, 梶原逸朗, 佐藤晶太, 西留千晶
第50回計測自動制御学会北海道支部学術講演会, 08 Mar. 2018, Japanese, Oral presentation
[Domestic Conference]

同次指数安定化制御則に基づく仮想構造を利用した任意構造物の振動制御　　　　　　　　　　　　　　　
大西諒史, 梶原逸朗
第60回自動制御連合講演会講演論文集, 10 Nov. 2017, Japanese, Oral presentation
[Domestic Conference]

レーザーアブレーションを用いた Lamb波の生成（金属チップによる損傷防止）　　　　　　　　　　　　　　　
奥村洋平, 細矢直基, 神田淳, 岩﨑紗綾, 梶原逸朗
Dynamics and Design Conference 2017, 29 Aug. 2017, Japanese, Oral presentation
[Domestic Conference]

レーザーを用いた音響加振に基づく閉空間内の異物検知　　　　　　　　　　　　　　　
小田一心, 梶原逸朗, 細矢直基
Dynamics and Design Conference 2017, 29 Aug. 2017, Japanese, Oral presentation
[Domestic Conference]

非線形性を有する自動車駆系の加速度制御　　　　　　　　　　　　　　　
佐藤晶太, 梶原逸朗, 西留千晶, 坂田将人, 波多野崇, 平松繁
運動と振動の制御シンポジウム2017, 29 Aug. 2017, Japanese, Oral presentation
[Domestic Conference]

ディーゼルエンジンにおけるNOx目標値のオンライン最適化　　　　　　　　　　　　　　　
佐々木アスカ, 塙哲史, 佐藤淳一, 花村良文, 石塚真一, 梶原逸朗
運動と振動の制御シンポジウム 2017, 29 Aug. 2017, Japanese, Oral presentation
[Domestic Conference]

ディー ゼルエンジン排出NOxソフトセンサのオンライン最適化　　　　　　　　　　　　　　　
平河佑樹, 梶原逸朗, 佐々木アスカ, 石塚真一, 佐藤淳一, 花村良文
自動車技術会 2016年秋 季大会 産学ポスターセッション, 21 Oct. 2016, Japanese, Oral presentation
[Domestic Conference]

制御性指標に基づくスマート構造のアクチュエタ配置最適化　　　　　　　　　　　　　　　
北畠茂幹, 梶原逸朗, 有坂寿洋
Dynamics and Design Conference 2016, 23 Aug. 2016, Japanese, Oral presentation
[Domestic Conference]

ディーセルエンジンのNOx制御に向けたNOxソフトセンサのセルフチューニング手法　　　　　　　　　　　　　　　
平河佑樹, 石塚真一, 梶原逸朗, 佐藤淳一, 花村良文
Dynamics and Design Conference 2016, 23 Aug. 2016, Japanese, Oral presentation
[Domestic Conference]

レーザプラズマ音響加振・計測による構造ヘルスモニタリング　　　　　　　　　　　　　　　
秋田涼佑, 梶原逸朗, 細矢直基
Dynamics and Design Conference 2016, 23 Aug. 2016, Japanese, Oral presentation
[Domestic Conference]

レーザーを用いた完全非接触でのLamb波生成可視化技術の開発　　　　　　　　　　　　　　　
神田淳, 細矢直基, 梶原逸朗
可視化情報全国講演(京都2015), 10 Oct. 2015, Japanese, Oral presentation
[Domestic Conference]

有限要素モデルと計測データに基づくシステムのモデル化と制御　　　　　　　　　　　　　　　
佐藤聡祐, 梶原逸朗, 有坂寿洋
第25回設計工学・システム部門 講演会, 23 Sep. 2015, Japanese, Oral presentation
[Domestic Conference]

モデルベースコントローラの極への摂動を利用した動特性変動に対するリアルタイムチューニング（実験による検 証）　　　　　　　　　　　　　　　
古谷圭一郎, 石塚真一, 梶原逸朗
Dynamics and Design Conference 2015, 25 Aug. 2015, Japanese, Oral presentation
[Domestic Conference]

MEMS加速度計を用いたモデルフリー振動制御手法　　　　　　　　　　　　　　　
伊藤陸, 梶原逸朗, 金堂雅彦
Dynamics and Design Conference 2015, 25 Aug. 2015, Japanese, Oral presentation
[Domestic Conference]

高出力レーザーによる音響加振技術を用いた構造ヘルスモニタリング　　　　　　　　　　　　　　　
柴田真太朗, 張月琳, 梶原逸朗, 細矢直基
Dynamics and Design Conference 2015, 25 Aug. 2015, Japanese, Oral presentation
[Domestic Conference]

スライディングモード制御に基づく仮想構造を用いたモデルフリー振動制御　　　　　　　　　　　　　　　
佐藤周也, 梶原逸朗, 金堂雅彦, 川野順一
Dynamics and Design Conference 2015, 25 Aug. 2015, Japanese, Oral presentation
[Domestic Conference]

圧電フィルムを用いた膜構造のアクティブ振動制御　　　　　　　　　　　　　　　
比留田稔樹, 張月琳, 梶原逸朗, 細矢直基
第27回「電磁力関連のダイナミクス」シンポジウム講演論文集, 14 May 2015, Japanese, Oral presentation
[Domestic Conference]

有限要素解析に基づく弾性率分布を持つ肝臓モデルのMREシミュレーション　　　　　　　　　　　　　　　
黒田啓介, 梶原逸朗, 但野茂, 菅幹生, 宮内隆太郎
第27回バイオエンジニアリング講演会, 09 Jan. 2015, Japanese, Oral presentation
[Domestic Conference]

非接触レー ザー加振を用いた振動計測に基づくアルミニウム平板の損傷検知　　　　　　　　　　　　　　　
伊藤祥彰, Feblil Huda, 梶原逸朗, 細矢直基
第13回評価・診断に関するシンポジウム, 11 Dec. 2014, Japanese, Oral presentation
[Domestic Conference]

アクチュエータモデルに仮想構造を導入したモデルフリー振動制御手法　　　　　　　　　　　　　　　
佐藤周也, 伊藤陸, 梶原逸朗, 金堂雅彦
第57回自動制御連合講演会, 10 Nov. 2014, Japanese, Oral presentation
[Domestic Conference]

モデルベースコントローラの極への摂動を利用した動特性変動に対するリアルタイムチューニング　　　　　　　　　　　　　　　
古谷圭一郎, 石塚真一, 梶原逸朗
第57回自動制御連合講演会, 10 Nov. 2014, Japanese, Oral presentation
[Domestic Conference]

同時摂動確率近似を用いたディーゼルエンジンのEGR/VNT制御　　　　　　　　　　　　　　　
石塚真一, 佐藤淳一, 梶原逸朗
第57回自動制御連合講演会, 10 Nov. 2014, Japanese, Oral presentation
[Domestic Conference]

LQG制御則に基づくセルフセンシングモデルフリー振動制御(実験による特性評価)　　　　　　　　　　　　　　　
伊藤陸, 佐藤周也, 梶原逸朗, 金堂雅彦, 松本圭一郎
Dynamics and Design Conference 2014, 26 Aug. 2014, Japanese, Oral presentation
[Domestic Conference]

PC筐体の振動抑制に向けたスマート構造システムの最適化　　　　　　　　　　　　　　　
古谷圭一郎, 佐藤聡祐, 梶原逸朗, 有坂洋寿, 三枝高志
Dynamics and Design Conference 2014, 26 Aug. 2014, Japanese, Oral presentation
[Domestic Conference]

非接触レーザー加振法を用いた膜構造のヘルスモニタリング（モード信頼性評価基準およびRT法を用いた評価方法の検討）　　　　　　　　　　　　　　　
新里淳, 梶原逸朗, Feblil Huda, 細矢直基
Dynamics and Design Conference 2014, 26 Aug. 2014, Japanese, Oral presentation
[Domestic Conference]

スマート構造を用いたＰＣ筐体のアクティブ振動制御　　　　　　　　　　　　　　　
古谷圭一郎, 梶原逸朗, 佐藤 聡祐, 有坂寿洋, 三枝高志
IIP2014情報・知能・精密機器部門講演会, 18 Mar. 2014, Japanese, Oral presentation
[Domestic Conference]

有限要素解析による肝臓モデルのMREシミュレーション　　　　　　　　　　　　　　　
富田直, 梶原逸朗, 但野茂, 横田秀夫, 中村玄, 菅幹生
第26回バイオエンジニアリング講演会, 11 Jan. 2014, Japanese, Oral presentation
[Domestic Conference]

同時摂動確率近似によるモデルフリー適応PID制御　　　　　　　　　　　　　　　
石塚真一, 梶原逸朗
第56回自動制御連合講演会, 16 Nov. 2013, Japanese, Oral presentation
[Domestic Conference]

同時摂動確率近似によるモデルベースコントローラのチューニング　　　　　　　　　　　　　　　
古谷圭一郎, 石塚真一, 梶原逸朗
第56回自動制御連合講演会, 16 Nov. 2013, Japanese, Oral presentation
[Domestic Conference]

アクティブマウントによるHDDシステムの外部振動遮断　　　　　　　　　　　　　　　
中嶋渉, 梶原逸朗, 中村滋男, 吉川紀夫
第56回自動制御連合講演会, 16 Nov. 2013, Japanese, Oral presentation
[Domestic Conference]

LQG制御側に基づくセルフセンシングモデルフリー振動制御　　　　　　　　　　　　　　　
大北竜平, 矢作修一, 梶原逸朗, 金堂雅彦, 松本圭一郎
第13回運動と振動の制御シンポジウム, 27 Aug. 2013, Japanese, Oral presentation
[Domestic Conference]

修正MPCによるディーゼルエンジンのEGR-VNT協調制御　　　　　　　　　　　　　　　
西留千晶, 佐藤淳一, 花村良文, 梶原逸朗
第13回運動と振動の制御シンポジウム, 27 Aug. 2013, Japanese, Oral presentation
[Domestic Conference]

粘弾性体の有限要素解析によるMREシミレーション　　　　　　　　　　　　　　　
富田直, 鈴木逸人, 梶原逸朗, 但野茂
Dynamics and Design Conference 2013, 26 Aug. 2013, Japanese, Oral presentation
[Domestic Conference]

パルスレーザーを用いた高分子材料の振動試験　　　　　　　　　　　　　　　
馬場駿, 細矢直基, 前田真吾, 梶原逸朗
Dynamics and Design Conference 2013, 26 Aug. 2013, Japanese, Oral presentation
[Domestic Conference]

非接触レーザー加振法を用いた膜構造のヘルスモニタリング　　　　　　　　　　　　　　　
新里淳, 梶原逸朗, 細矢直基, Feblil Huda
Dynamics and Design Conference 2013, 26 Aug. 2013, Japanese, Oral presentation
[Domestic Conference]

パッシブ／アクティブマウント機構によるHDDシステムの外部振動遮断　　　　　　　　　　　　　　　
中嶋渉, 古谷圭一郎, 梶原逸朗, 中村滋男, 吉川紀夫
IIP2013情報・知能・精密機器部門講演会, 22 Mar. 2013, Japanese, Oral presentation
[Domestic Conference]

Active feed-forward cancellationに基づくセルフセンシング・モデルフリー振動制御　　　　　　　　　　　　　　　
藪井将太, 梶原逸朗, 矢作修一
IIP2013情報・知能・精密機器部門講演会, 22 Mar. 2013, Japanese, Oral presentation
[Domestic Conference]

MRE評価に向けた生体模擬ファントムの有限要素法振動解析　　　　　　　　　　　　　　　
富田直, 鈴木逸人, 梶原逸朗, 但野茂
第11回評価・診断に関するシンポジウム, 10 Dec. 2012, Japanese, Oral presentation
[Domestic Conference]

レーザーブレイクダウンによる非接触加振法を用いた膜構造の振動モード実験　　　　　　　　　　　　　　　
新里淳, 梶原逸朗, 細矢直基
第11回評価・診断に関するシンポジウム, 10 Dec. 2012, Japanese, Oral presentation
[Domestic Conference]

DVFBに基づくセンサレスモデルフリー振動制御(実験による検証)　　　　　　　　　　　　　　　
矢作修一, 大北竜平, 梶原逸朗, 金堂雅彦, 松本圭一郎
第55回自動制御連合講演会, 18 Nov. 2012, Japanese, Oral presentation
[Domestic Conference]

マイクロスマート構造のパッシブ／アクティブ併用振動制御(非接触レーザー加振システムによる制振特性評価)　　　　　　　　　　　　　　　
朱艶, 梶原逸朗, 細矢直基
第55回自動制御連合講演会, 18 Nov. 2012, Japanese, Oral presentation
[Domestic Conference]

HDDスマートヘッドアクチュエータののパッシブ／アクティブ併用振動制御　　　　　　　　　　　　　　　
中嶋渉, 梶原逸朗
第55回自動制御連合講演会, 18 Nov. 2012, Japanese, Oral presentation
[Domestic Conference]

micro-MRIによる高分子ゲルの3次元MRE画像　　　　　　　　　　　　　　　
鈴木逸人, 藤崎和弘, 菅幹生, 中村玄, 梶原逸朗, 但野茂
第23回バイオフロンティア講演会, Oct. 2012, Japanese, Oral presentation
[Domestic Conference]

マイクロスマート複合材の統合最適化とレーザー加振技術による振動制御性能評価　　　　　　　　　　　　　　　
渡邉一希, 本田真也, 成田吉弘, 梶原逸朗
Dynamics and Design Conference 2012, 20 Sep. 2012, Japanese, Oral presentation
[Domestic Conference]

制御対象のモデルを要しない汎用センサレスモデルフリー振動制御法　　　　　　　　　　　　　　　
矢作修一, 佐藤祐介, 梶原逸朗, 金堂雅彦
日本機械学会2012年度年次大会, 09 Sep. 2012, Japanese, Oral presentation
[Domestic Conference]

非接触レーザー加振技術によるボルト緩み検知に関する研究　　　　　　　　　　　　　　　
杉本雅俊, 竹内将人, 梶原逸朗, 細矢直基, 河村庄造
日本機械学会2012年度年次大会, 09 Sep. 2012, Japanese, Oral presentation
[Domestic Conference]

非接触レーザー加振技術を用いたモーメント加振法による周波数応答関数の推定　　　　　　　　　　　　　　　
小林明莉, 滝口康太, 細矢直基, 梶原逸朗
日本機械学会2012年度年次大会, 09 Sep. 2012, Japanese, Oral presentation
[Domestic Conference]

レーザーアブレーションにより生成されるパルス音源を用いた音響加振法　　　　　　　　　　　　　　　
井上龍生, 細矢直基, 梶原逸朗
日本機械学会2012年度年次大会, 09 Sep. 2012, Japanese, Oral presentation
[Domestic Conference]

mico-MRIによる2層アガロースゲルのMRE画像　　　　　　　　　　　　　　　
鈴木逸人, 藤崎和弘, 菅幹生, 中村玄, 王海兵, 梶原逸朗, 但野茂
日本機械学会2012年度年次大会, 09 Sep. 2012, Japanese, Oral presentation
[Domestic Conference]

高分子ゲルのMRE画像に対する加振条件　　　　　　　　　　　　　　　
鈴木逸人, 藤崎和弘, 菅幹生, 中村玄, 王海兵, 梶原逸朗, 但野茂
第24回バイオエンジニアリング講演会, 07 Jan. 2012, Japanese, Oral presentation
[Domestic Conference]

非接触レーザー加振による膜構造の振動モード特性評価　　　　　　　　　　　　　　　
西埜亮太, 梶原逸朗, 細矢直基, 西留千晶
第10回評価・診断に関するシンポジウム, 14 Dec. 2011, Japanese, Oral presentation
[Domestic Conference]

レーザー加振を用いたスマートマイクロ複合材の振動制御性の評価　　　　　　　　　　　　　　　
本田真也, 成田吉弘, 梶原逸朗, 中村哲司
第36回複合材料シンポジウム, 20 Oct. 2011, Japanese, Oral presentation
[Domestic Conference]

超小型スマート構造の振動制御と非接触レーザー加振による制振特性評価　　　　　　　　　　　　　　　
朱艶, 中村哲司, 梶原逸朗
Dynamics and Design Conference 2011, 05 Sep. 2011, Japanese, Oral presentation
[Domestic Conference]

非接触レーザー加振システムによる膜構造の振動計測　　　　　　　　　　　　　　　
梶原逸朗, 小原賢也
Dynamics and Design Conference 2011, 05 Sep. 2011, Japanese, Oral presentation
[Domestic Conference]

積層パラメータを用いたスマート複合材の統合最適設計　　　　　　　　　　　　　　　
小坂亙, 本田真也, 成田吉弘, 梶原逸朗
Dynamics and Design Conference 2011, 05 Sep. 2011, Japanese, Oral presentation
[Domestic Conference]

レーザー加振技術を用いた回転円板の実稼働時振動計測　　　　　　　　　　　　　　　
宮本大資, 梶原逸朗, 細矢直基
Dynamics and Design Conference 2011, 05 Sep. 2011, Japanese, Oral presentation
[Domestic Conference]

レーザーアブレーション加振による水中構造物の非接触振動試験　　　　　　　　　　　　　　　
矢作修一, 細矢直基, 梶原逸朗
Dynamics and Design Conference 2011, 05 Sep. 2011, Japanese, Oral presentation
[Domestic Conference]

レーザーブレイクダウンによる点音源を用いた微小空間の音響加振法　　　　　　　　　　　　　　　
永田将希, 細矢直基, 梶原逸朗
Dynamics and Design Conference 2011, 05 Sep. 2011, Japanese, Oral presentation
[Domestic Conference]

スマート構造を用いたHDDヘッド駆動機構の高周波帯域振動制御　　　　　　　　　　　　　　　
中村哲司, 梶原逸朗, 有坂寿洋
第12回運動と振動の制御シンポジウム, 29 Jun. 2011, Japanese, Oral presentation
[Domestic Conference]

非接触レーザー加振/計測技術による超小型スマート構造の制振特性評価　　　　　　　　　　　　　　　
朱艶, 中村哲司, 梶原逸朗
第12回運動と振動の制御シンポジウム, 29 Jun. 2011, Japanese, Oral presentation
[Domestic Conference]

レーザー加振技術による小型スマート構造の制振特性評価　　　　　　　　　　　　　　　
朱艶, 中村哲司, 梶原逸朗
IIP2011情報・知能・精密機器部門講演会, 22 Mar. 2011, Japanese, Oral presentation
[Domestic Conference]

打撃試験を用いた高周波帯域の特性変動検知に基づくボルト緩み診断　　　　　　　　　　　　　　　
細川恭彦, 細矢直基, 梶原逸朗
日本機械学会関東支部第17期総会講演会, 18 Mar. 2011, Japanese, Oral presentation
[Domestic Conference]

スマート構造を用いたHDDキャリッジアームの高周波帯域振動制御　　　　　　　　　　　　　　　
中村哲司, 梶原逸朗, 有坂寿洋
第43回計測自動制御学会北海道支部学術講演会, 02 Mar. 2011, Japanese, Oral presentation
[Domestic Conference]

レーザー加振実験およびFEMによる膜構造の振動特性評価　　　　　　　　　　　　　　　
西埜亮太, 小原賢也, 梶原逸朗
第53回自動制御連合講演会, 06 Nov. 2010, Japanese, Oral presentation
[Domestic Conference]

ディーゼルエンジンのモデル予測型EGR－VNT協調制御に関する研究　　　　　　　　　　　　　　　
岩崎晃, 梶原逸朗, 西留千晶, 花村良文, 高田博
第53回自動制御連合講演会, 04 Nov. 2010, Japanese, Oral presentation
[Domestic Conference]

スマート複合材料の振動制御に関する統合最適化　　　　　　　　　　　　　　　
本田真也, 成田吉弘, 梶原逸朗
第23回計算力学講演会, 25 Sep. 2010, Japanese, Oral presentation
[Domestic Conference]

HDDスマートヘッド機構におけるセンサ／アクチュエータ／制御の最適化　　　　　　　　　　　　　　　
中村哲司, 梶原逸朗, 有坂寿洋
第23回計算力学講演会, 23 Sep. 2010, Japanese, Oral presentation
[Domestic Conference]

レーザー加振技術を用いた高周波帯域の特性変動検知に基づくヘルスモニタリング　　　　　　　　　　　　　　　
宮本大資, 梶原逸朗, 細矢直基, 古川崇人, 櫻井泰貴
Dynamics and Design Conference 2010, 17 Sep. 2010, Japanese, Oral presentation
[Domestic Conference]

力計測をセンサレス化したレーザー加振実験に基づくFRF計測　　　　　　　　　　　　　　　
細矢直基, 梶原逸朗, 細川恭彦
Dynamics and Design Conference 2010, 15 Sep. 2010, Japanese, Oral presentation
[Domestic Conference]

圧電素子を用いたエネルギーハーべスティングの高効率化に関する研究　　　　　　　　　　　　　　　
櫻井努, 梶原逸朗, 原田宏幸, 新井浩成
Dynamics and Design Conference 2010, 14 Sep. 2010, Japanese, Oral presentation
[Domestic Conference]

HDDスマートヘッド機構の最適設計と高周波帯域振動制御　　　　　　　　　　　　　　　
中村哲司, 梶原逸朗, 有坂寿洋, 高橋真史
Dynamics and Design Conference 2010, 14 Sep. 2010, Japanese, Oral presentation
[Domestic Conference]

SMAアクチュエータを用いた水中推進ロボット　　　　　　　　　　　　　　　
原田宏幸, 梶原逸朗, 黒川貴裕
Dynamics and Design Conference 2010, 14 Sep. 2010, Japanese, Oral presentation
[Domestic Conference]

打撃試験を用いた高周波帯域の特性変動検知に基づくヘルスモニタリング　　　　　　　　　　　　　　　
細川恭彦, 細矢直基, 梶原逸朗
Dynamics and Design Conference 2010, 14 Sep. 2010, Japanese, Oral presentation
[Domestic Conference]

HDDのスマート構造化と機構最適化による高周波帯域振動制御　　　　　　　　　　　　　　　
高橋真史, 梶原逸朗, 有坂寿洋, 中村哲司
IIP2010情報・知能・精密機器部門講演会, 17 Mar. 2010, Japanese, Oral presentation
[Domestic Conference]

セミアクティブサスペンションによる車両の振動制御　　　　　　　　　　　　　　　
宮本大資, 梶原逸朗, 新藤広樹
第42回計測自動制御学会北海道支部学術講演会, 22 Feb. 2010, Japanese, Oral presentation
[Domestic Conference]

レーザー加振技術を用いた高周波振動計測に基づくヘルスモニタリング　　　　　　　　　　　　　　　
梶原逸朗, 細矢直基
第8回評価・診断に関するシンポジウム, 10 Dec. 2009, Japanese, Oral presentation
[Domestic Conference]

HDD高密度化のための振動制御と革新的振動計測技術　　　　　　　　　　　　　　　
梶原逸朗
イノベーションジャパン2009 －大学見本市, 16 Sep. 2009, Japanese, Oral presentation
[Domestic Conference]

レーザーを用いたインパルス加振実験法による振動計測（周波数応答関数測定の高精度化）　　　　　　　　　　　　　　　
細矢直基, 反町仁, 梶原逸朗, 原口大輔
Dynamics and Design Conference 2009, 2009, Japanese, Oral presentation
[Domestic Conference]

レーザー双方向通信によるマイクロ移動体の遠隔制御　　　　　　　　　　　　　　　
梶原逸朗, 中野孝亮
Dynamics and Design Conference 2009, 2009, Japanese, Oral presentation
[Domestic Conference]

レーザーによる高周波振動計測に基づくヘルスモニタリング　　　　　　　　　　　　　　　
梶原逸朗, 細矢直基
日本機械学会 第11回運動と振動の制御シンポジウム, 2009, Japanese, Oral presentation
[Domestic Conference]

ILQ設計に基づくディーゼルエンジンのEGR-VNT協調制御　　　　　　　　　　　　　　　
西留千晶, 佐藤淳一, 梶原逸朗, 花村良文, 高田 博
日本機械学会 第11回運動と振動の制御シンポジウム, 2009, Japanese, Oral presentation
[Domestic Conference]

慣性質量型圧電アクチュエータによる周波数帯域分離型ロバスト振動制御　　　　　　　　　　　　　　　
梶原逸朗, 加藤弘敏, 金堂雅彦, 佐藤裕介
第20回電磁力関連のダイナミクスシンポジウム, 2008, Japanese, Oral presentation
[Domestic Conference]

HDDのスマート構造化による振動制御とサーボ性能の向上　　　　　　　　　　　　　　　
梶原逸朗, 内山敏夫, 有坂寿洋
Dynamics and Design Conference 2008, 2008, Japanese, Oral presentation
[Domestic Conference]

HDDにおけるサーボの高性能化を目指したスマート構造の最適設計　　　　　　　　　　　　　　　
高橋真史, 内山敏夫, 梶原逸朗, 有坂寿洋
Dynamics and Design Conference 2008, 2008, Japanese, Oral presentation
[Domestic Conference]

レーザーによるマイクロ移動体の遠隔制御とエネルギー伝送　　　　　　　　　　　　　　　
中野孝亮, 小幡倫世, 梶原逸朗
Dynamics and Design Conference 2008, 2008, Japanese, Oral presentation
[Domestic Conference]

レーザーを用いたインパルス加振実験法による振動計測　　　　　　　　　　　　　　　
細矢直基, 梶原逸朗
Dynamics and Design Conference 2008, 2008, Japanese, Oral presentation
[Domestic Conference]

スマートリンク機構における特性変動を考慮した制御系最適化　　　　　　　　　　　　　　　
梶原逸朗, 土屋亮, 石塚真一
第21回計算力学講演会, 2008, Japanese, Oral presentation
[Domestic Conference]

HDDにおけるヘッド機構のスマート構造化と最適設計　　　　　　　　　　　　　　　
高橋真史, 梶原逸朗, 有坂寿洋
第8回最適化シンポジウム, 2008, Japanese, Oral presentation
[Domestic Conference]

Gain-scheduled control of smart structures with dynamic characteristic variation　　　　　　　　　　　　　　　
World Forum on Smart Materials and Smart Structures Technology, 2007

周波数帯域分離型並列コントローラによる広帯域ロバスト協調制御法　　　　　　　　　　　　　　　
梶原逸朗, 加藤弘敏, 金堂雅彦, 佐藤裕介
第10回運動と振動の制御シンポジウム, 2007, Japanese, Oral presentation
[Domestic Conference]

特性変動を有する外乱を受けるスマート構造の振動制御法　　　　　　　　　　　　　　　
小野仁章, 梶原逸朗
Dynamics and Design Conference 2007, 2007, Japanese, Oral presentation
[Domestic Conference]

レーザーエネルギー伝送による小型移動体の遠隔駆動　　　　　　　　　　　　　　　
中野孝亮, 大北哲也, 梶原逸朗
Dynamics and Design Conference 2007, 2007, Japanese, Oral presentation
[Domestic Conference]

レーザーを用いた新しい加振実験方法　　　　　　　　　　　　　　　
小幡倫世, 梶原逸朗
Dynamics and Design Conference 2007, 2007, Japanese, Oral presentation
[Domestic Conference]

正実性を利用したスマート構造による振動制御法　　　　　　　　　　　　　　　
片岡隆仁, 粟生真行, 梶原逸朗
Dynamics and Design Conference 2007, 2007, Japanese, Oral presentation
[Domestic Conference]

Remote Control of Laser-Driven Micro-Vehicles　　　　　　　　　　　　　　　
4th International Symposium on Beamed Energy Propulsion, 2006

Optimization of vibration control system for smart structures with disturbance characteristic variation　　　　　　　　　　　　　　　
11th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference, 2006

人間の聴覚特性を考慮した放射騒音抑制のためのスマート構造最適化　　　　　　　　　　　　　　　
小野仁章, 梶原逸朗
Dynamics and Design Conference 2006, 2006, Japanese, Oral presentation
[Domestic Conference]

マイクロ移動体のための光学システムの開発　　　　　　　　　　　　　　　
大北哲也, 梶原逸朗
Dynamics and Design Conference 2006, 2006, Japanese, Oral presentation
[Domestic Conference]

特性変動を有するシステムのスマート構造による適応制御　　　　　　　　　　　　　　　
土屋亮, 梶原逸朗
日本機械学会2006年度年次大会, 2006, Japanese, Oral presentation
[Domestic Conference]

外乱特性変動をともなうスマート構造の複合領域最適化　　　　　　　　　　　　　　　
小野仁章, 梶原逸朗
第49回自動制御連合講演会, 2006, Japanese, Oral presentation
[Domestic Conference]

振動燃焼の物理モデルとその能動的制御システムの構築　　　　　　　　　　　　　　　
井出智広, 佐藤博之, 梶原逸朗, 林光一
熱工学コンファレンス2006, 2006, Japanese, Oral presentation
[Domestic Conference]

Suppression of Combustion Noise and Combustion Oscillation by Thermo-Acoustic Active Control Using Secondary Flame　　　　　　　　　　　　　　　
ASME Turbo Expo 2005, 2005

Remote Control of Laser-Driven Micro-Vehicles　　　　　　　　　　　　　　　
4th International Symposium on Beamed Energy Propulsion, 2005, Poster presentation

Efficiency of Air Injection on Stability and Emission Controls in Premixed Combustion　　　　　　　　　　　　　　　
20th International Colloquium on the Dynamics of Explosions and Reactive Systems, 2005

Multidisciplinary Design Optimization of Smart Structures for Vibration and Sound Suppression　　　　　　　　　　　　　　　
11th Asia-Pacific Vibration Conference, 2005

特性変動を有するスマートマニピュレータの制振性能向上を目指した制御機構最適化　　　　　　　　　　　　　　　
土屋亮, 梶原逸朗
Dynamics and Design Conference 2005, 2005, Japanese, Oral presentation
[Domestic Conference]

レーザーによる移動体の遠隔制御に関する研究　　　　　　　　　　　　　　　
大北哲也, 星野健太郎, 梶原逸朗
Dynamics and Design Conference 2005, 2005, Japanese, Oral presentation
[Domestic Conference]

スマート構造の複合領域最適化による振動・騒音の抑制　　　　　　　　　　　　　　　
小野仁章, 梶原逸朗, 石塚真一
Dynamics and Design Conference 2005, 2005, Japanese, Oral presentation
[Domestic Conference]

スマート構造の実験的モデル化による振動・騒音のアクティブ制御　　　　　　　　　　　　　　　
宮下真明, 西留千晶, 梶原逸朗
第9回運動と振動の制御シンポジウム, 2005, Japanese, Oral presentation
[Domestic Conference]

Multidisciplinary Optimization of Smart Structure with Characteristic Variation for Vibration Suppression　　　　　　　　　　　　　　　
2004, Poster presentation

マイクロ飛行機のためのレーザー推進／追尾システム　　　　　　　　　　　　　　　
星野健太郎, 石川博康, 梶原逸朗, 嶋根義親, 矢部孝, 内田成明
第53回理論応用力学講演会, 2004, Japanese, Oral presentation
[Domestic Conference]

スマート構造におけるPZTアクチュエータと制御系の複合領域最適化　　　　　　　　　　　　　　　
大橋史武, 梶原逸朗
日本機械学会関東支部第10期総会講演会, 2004, Japanese, Oral presentation
[Domestic Conference]

パンタグラフ機構のスマート構造化による振動制御　　　　　　　　　　　　　　　
岩垂素子, 大橋史武, 土谷亮, 梶原逸朗, 堀江三喜男
日本機械学会関東支部第10期総会講演会, 2004, Japanese, Oral presentation
[Domestic Conference]

特性変化を伴うスマート構造の制振性能向上を目指した複合領域最適化　　　　　　　　　　　　　　　
土屋亮, 梶原逸朗
日本機械学会2004年度年次大会, 2004, Japanese, Oral presentation
[Domestic Conference]

スマートパンタグラフ機構におけるアクチュエータと制御の統合的最適化　　　　　　　　　　　　　　　
岩垂素子, 梶原逸朗, 堀江三喜男
Dynamics and Design Conference 2004, 2004, Japanese, Oral presentation
[Domestic Conference]

複合領域最適化によるレーザー推進マイクロ飛行機の設計　　　　　　　　　　　　　　　
梶原逸朗, 矢部孝
Dynamics and Design Conference 2004, 2004, Japanese, Oral presentation
[Domestic Conference]

アクチュエータアレイを用いたスマート構造の適応制御　　　　　　　　　　　　　　　
土屋亮, 梶原逸朗
Dynamics and Design Conference 2004, 2004, Japanese, Oral presentation
[Domestic Conference]

特性変動を有するスマート構造のアクチュエータ／スケジューリング制御の統合的最適化　　　　　　　　　　　　　　　
梶原逸朗, 大橋史武
第47回自動制御連合講演会, 2004, Japanese, Oral presentation
[Domestic Conference]

スマート構造におけるアクチュエータアレイと適応制御の統合的最適化　　　　　　　　　　　　　　　
土屋亮, 梶原逸朗
第6回最適化シンポジウム, 2004, Japanese, Oral presentation
[Domestic Conference]

GAによるスマート構造の圧電アクチュエータ配置と制御系の同時最適化　　　　　　　　　　　　　　　
岩垂素子, 大橋史武, 梶原逸朗
第8回日本計算工学会講演会, 2003, Japanese, Oral presentation
[Domestic Conference]

制御性を考慮したスマート構造の位相・形状最適化　　　　　　　　　　　　　　　
梶原逸朗, 大森隆広
Dynamics and Design Conference 2003, 2003, Japanese, Oral presentation
[Domestic Conference]

スマートキャリッジアームにおける圧電アクチュエータ配置と制御系の統合最適化　　　　　　　　　　　　　　　
大橋史武, 梶原逸朗, 有坂寿洋
Dynamics and Design Conference 2003, 2003, Japanese, Oral presentation
[Domestic Conference]

遺伝的アルゴリズムを用いたスマート構造の機構と制御の統合最適化　　　　　　　　　　　　　　　
岩垂素子, 大橋史武, 梶原逸朗
Dynamics and Design Conference 2003, 2003, Japanese, Oral presentation
[Domestic Conference]

レーザー推進マイクロ飛行機におけるレーザー追尾装置とスマート翼の開発　　　　　　　　　　　　　　　
石川博康, 梶原逸朗, 古谷俊輔, 矢部孝
Dynamics and Design Conference 2003, 2003, Japanese, Oral presentation
[Domestic Conference]

スマート構造における圧電アクチュエータとモード制御系の同時最適化による制振性能の向上　　　　　　　　　　　　　　　
梶原逸朗, 大橋史武
第8回運動と振動の制御シンポジウム, 2003, Japanese, Oral presentation
[Domestic Conference]

Hybrid Control of Motion and Vibration for Smart Flexible-Link Mechanism　　　　　　　　　　　　　　　
Nishidome, C, Kajiwara, I
SICE Annual Conference 2002, 2002, English, Oral presentation
[International presentation]

Design of Shape and Control System for Micro-Airplane Development　　　　　　　　　　　　　　　
Ishikawa, H, Kajiwara, I, Yabe, T
SICE Annual Conference 2002, 2002, English, Oral presentation
[International presentation]

スマート構造における機構と制御の同時最適設計 (多入力系における検討)　　　　　　　　　　　　　　　
梶原逸朗, 上原学, 大森隆広
Dynamics and Design Conference 2002, 2002, Japanese, Oral presentation
[Domestic Conference]

光ディスク装置における光ピックアップ構造の動解析と最適化　　　　　　　　　　　　　　　
大森隆広, 梶原逸朗, 松井勉
Dynamics and Design Conference 2002, 2002, Japanese, Oral presentation
[Domestic Conference]

スマート構造における機構系と制御系の同時最適化　　　　　　　　　　　　　　　
上原学, 梶原逸朗, 大森隆広
第7回振動と運動の制御シンポジウム, 2001, Japanese, Oral presentation
[Domestic Conference]

スマート化フレキシブルリンク機構における運動と振動の制御－機構の提案および多リンクの同時スマート化－　　　　　　　　　　　　　　　
西留千晶, 梶原逸朗, 太田俊輔
第7回振動と運動の制御シンポジウ, 2001, Japanese, Oral presentation
[Domestic Conference]

スマート構造における位相形状と制御系の統合最適設計　　　　　　　　　　　　　　　
大森隆広, 上原学, 梶原逸朗
Dynamics and Design Conference 2001, 2001, Japanese, Oral presentation
[Domestic Conference]

実験的モデル化と制御系設計の統合に関する基礎的研究　　　　　　　　　　　　　　　
梶原逸朗, 月成俊介, 吉村卓也
Dynamics and Design Conference 2001, 2001, Japanese, Oral presentation
[Domestic Conference]

圧電フィルムによるOA機器の計測と制御　　　　　　　　　　　　　　　
江連勝彦, 猿渡克巳, 梶原逸朗, 森厚夫
Dynamics and Design Conference 2001, 2001, Japanese, Oral presentation
[Domestic Conference]

スマート構造における計測と制御　　　　　　　　　　　　　　　
梶原逸朗, 上原学, 大森隆広
日本機械学会2001年度年次大会, 2001, Japanese, Oral presentation
[Domestic Conference]

スマート構造における圧電アクチュエータ形状と制御系の最適設計　　　　　　　　　　　　　　　
梶原逸朗, 上原学, 大森隆広
第11回設計工学・システム部門講演会, 2001, Japanese, Oral presentation
[Domestic Conference]

スマート構造における圧電アクチュエータの形状設計 (数値最適化と正実性評価によるアプローチ)　　　　　　　　　　　　　　　
梶原逸朗, 原辰次, 上原学, 山内浩和
第14回計算力学講演会, 2001, Japanese, Oral presentation
[Domestic Conference]

圧電フィルムを用いたスマート構造における形状と制御の統合設計　　　　　　　　　　　　　　　
梶原逸朗, 上原学, 長松昭男
日本機械学会2000年度年次大会, 2000, Japanese, Oral presentation
[Domestic Conference]

スマート化フレキシブルリンク機構における運動と振動の制御　　　　　　　　　　　　　　　
梶原逸朗, 榊原範人, 長松昭男
Dynamics and Design Conference 2000, 2000, Japanese, Oral presentation
[Domestic Conference]

Shape Optimization of Micro Air Vehicles Considering Stability and Controllability　　　　　　　　　　　　　　　
Kajiwara, I, Haftka, R. T
第48回理論応用力学講演会, 1999, English, Oral presentation
[Domestic Conference]

振動低減のための構造系と制御系の統合設計法　　　　　　　　　　　　　　　
梶原逸朗, 長松昭男
Dynamics and Design Conference ’99, 1999, Japanese, Oral presentation
[Domestic Conference]

フレキシブルリンク機構における振動と運動の制御　　　　　　　　　　　　　　　
榊原範人, 梶原逸朗, 長松昭男
1999年度システム部門講演, 1999, Japanese, Oral presentation
[Domestic Conference]

スマート構造における形状と制御の同時最適化　　　　　　　　　　　　　　　
梶原逸朗, 榊原範人, 長松昭男
1999年度システム部門講演, 1999, Japanese, Oral presentation
[Domestic Conference]

Simultaneous Optimum Design of Structure and Control System　　　　　　　　　　　　　　　
Kajiwara, I
計測自動制御学会第３７回学術講演会予稿集, 1998, English, Oral presentation
[Domestic Conference]

複数の制御音源を用いたモード解析に基づくフィードバック音響制御　　　　　　　　　　　　　　　
松永義弘, 小池関也, 下嶋浩, 梶原逸朗
Dynamics and Design Conference ’98, 1998, Japanese, Oral presentation
[Domestic Conference]

Simultaneous Optimum Design of Shape and Control System for Micro Air Vehicles　　　　　　　　　　　　　　　
Kajiwara, I, Haftka, R. T
第76期日本機械学会全国大会講演会, 1998, English, Oral presentation
[Domestic Conference]

モード解析による１次元ダクト音場のモデル化と能動的騒音制御　　　　　　　　　　　　　　　
梶原逸朗, 福田将直, 下嶋浩
日本機械学会第74期通常総会講演会, 1997, Japanese, Oral presentation
[Domestic Conference]

ゲインスケジューリングによる平面２自由度マニピュレータの位置と力の制御　　　　　　　　　　　　　　　
梶原逸朗, 山家勝裕, 下嶋浩
日本機械学会第74期通常総会講演会, 1997, Japanese, Oral presentation
[Domestic Conference]

自動車エンジンマウントの最適設計法（遺伝的アルゴリズムによる連続変数と離散変数の同時最適化）　　　　　　　　　　　　　　　
梶原逸朗, 鎌田慶宣, 長松昭男
Dynamics and Design Conference ’97, 1997, Japanese, Oral presentation
[Domestic Conference]

防振ハンドルの最適設計に関する研究　　　　　　　　　　　　　　　
Hyou Eiko, 背戸一登, 土井文夫
Dynamics and Design Conference ’97, 1997, Japanese, Oral presentation
[Domestic Conference]

位置決め制御機構における構造と制御の統合最適化　　　　　　　　　　　　　　　
梶原逸朗, 長松昭男, 関研一, 小谷雄司
日本機械学会第73期通常総会講演会, 1996, Japanese, Oral presentation
[Domestic Conference]

感度解析による構造系と振動制御系の統合最適設計（構造物形状とセンサー/アクチュエーター配置の最適化）　　　　　　　　　　　　　　　
梶原逸朗, 長松昭男, 松永義弘
Dynamics and Design Conference ’96, 1996, Japanese, Oral presentation
[Domestic Conference]

ERAに基づく実験的状態空間モデル化と制御系設計の統合　　　　　　　　　　　　　　　
郭中陽, 梶原逸朗, 長松昭男
日本機械学会第74期全国大会講演会, 1996, Japanese, Oral presentation
[Domestic Conference]

振動制御系における構造物形状とセンサー/アクチュエータ配置の統合最適化　　　　　　　　　　　　　　　
梶原逸朗, 長松昭男
第2回最適化シンポジウム, 1996, Japanese, Oral presentation
[Domestic Conference]

加振力の周波数応答特性を考慮した構造物の結合点の最適配置法　　　　　　　　　　　　　　　
河辺佳子, 吉田忍, 三枝省三, 梶原逸朗, 長松昭男
第2回最適化シンポジウム, 1996, Japanese, Oral presentation
[Domestic Conference]

遺伝的アルゴリズムを用いた構造系と 制御系の統合最適設計　　　　　　　　　　　　　　　
辻岡一明, 梶原逸朗, 浅井勝彦, 長松昭男
第44回応用力学連合講演会, 1995, Japanese, Oral presentation
[Domestic Conference]

振動問題における構造物の形状最適設計　　　　　　　　　　　　　　　
梶原逸朗, 河辺佳子, 吉田忍, 三枝省三, 長松昭男
第44回応用力学連合講演会, 1995, Japanese, Oral presentation
[Domestic Conference]

固有振動数を高める構造物の形状最適化手法　　　　　　　　　　　　　　　
河辺佳子, 吉田忍, 三枝省三, 梶原逸朗, 長松昭男
第44回応用力学連合講演会, 1995, Japanese, Oral presentation
[Domestic Conference]

モード解析を用いたトラックキャブの ロバスト振動制御　　　　　　　　　　　　　　　
曽根原努, 河合一男, 久保康丸, 梶原逸朗, 長松昭男
自動車技術会春季大会学術講演会, 1995, Japanese, Oral presentation
[Domestic Conference]

高周波遷移領域のおける振動評価　　　　　　　　　　　　　　　
梶原逸朗, 高橋直樹, 長松昭男
Dynamics and Design Conference ’95, 1995, Japanese, Oral presentation
[Domestic Conference]

遺伝的アルゴリズムによる構造物の位相形状最適化（計算効率の向上と実機構造の最適化）　　　　　　　　　　　　　　　
梶原逸朗, 佐々木康貴, 長松昭男
Dynamics and Design Conference ’95, 1995, Japanese, Oral presentation
[Domestic Conference]

振動問題における結合条件の感度解析　　　　　　　　　　　　　　　
河辺佳子, 吉田忍, 三枝省三, 梶原逸朗, 長松昭男
第8回計算力学講演会, 1995, Japanese, Oral presentation
[Domestic Conference]

遺伝的アルゴリズムを用いた構造系と 制御系の統合最適設計　　　　　　　　　　　　　　　
辻岡一明, 梶原逸朗, 浅井勝彦, 長松昭男
Dynamics and Design Conference ’94, 1994, Japanese, Oral presentation
[Domestic Conference]

振動問題における構造物の形状最適設計　　　　　　　　　　　　　　　
梶原逸朗, 河辺佳子, 吉田忍, 三枝省三, 長松昭男
Dynamics and Design Conference ’94, 1994, Japanese, Oral presentation
[Domestic Conference]

構造系と 制御系の同時最適設計　　　　　　　　　　　　　　　
辻岡一明, 梶原逸朗, 浅井勝彦, 長松昭男
日本機械学会第７１期全国大会講演論文集, 1993, Japanese, Oral presentation
[Domestic Conference]

構造系と出力フィードバック制御系の同時最適設計　　　　　　　　　　　　　　　
梶原逸朗, 辻岡一明, 長松昭男
第９回宇宙構造シンポジウム, 1993, Japanese, Oral presentation
[Domestic Conference]

感度解析による構造系と制御系の最適設計　　　　　　　　　　　　　　　
梶原逸朗, 長松昭男
システム最適化に関するシンポジウム, 1991, Japanese, Oral presentation
[Domestic Conference]

特性行列同定法に基づく最適制御系の設計法　　　　　　　　　　　　　　　
梶原逸朗, 長松昭男, 大熊政明, 稲垣亨
第２回運動と振動の制御シンポジウム, 1991, Japanese, Oral presentation
[Domestic Conference]

共振点と反共振点の感度を用いた構造物の最適化方法　　　　　　　　　　　　　　　
梶原逸朗
第１回環境工学総合シンポジウム講, 1991, Japanese, Oral presentation
[Domestic Conference]

共振点消去の方法と光サーボ系の最適設計　　　　　　　　　　　　　　　
梶原逸朗, 長松昭男, 背戸一登
第５回宇宙構造シンポジウム, 1989, Japanese, Oral presentation
[Domestic Conference]

Health monitoring system with machine learning of offshore wind turbines in Scotland (UK) based on non-contact remote laser ablation vibration testing
Grants-in-Aid for Scientific Research
07 Oct. 2022 - 31 Mar. 2026
細矢 直基, 山田 雄平, 前田 真吾, 梶原 逸朗, 橋村 真治
緩んでも緩まなくても困る，矛盾している機械要素がねじ締結体である．軸力の管理は，打音試験法，トルクレンチ法，超音波法などにより行われている．どれも検査員の重労働に依存しており，遠隔かつ自動による軸力検出が期待されている．過去に，多くの軸力検出手法が検討されてきた．研究代表者も同様である．しかし，これらの研究では，極めて理想的な状態において軸力検出を検討してきた．洋上風力発電機をはじめ，多くのインフラ構造物のねじに施されている表面処理（メッキ等）を無視している．表面処理は，締結時の摩擦特性など，軸力管理に大きな影響を及ぼす．学術的「問い」は，過酷な環境で用いるための表面処理（数百マイクロメートル程度）が施されたねじ締結体の軸力検出を，過去に検討されてきた方法で実現できるのか，これを遠隔で行い，機械学習により自動化できるのか，である．本研究では，イギリス，Edinburgh大学のGiorgio-Serchi先生，Garcia Cava先生らの研究チームの機械学習と，細矢らのレーザー加振技術による非接触遠隔計測を融合する．そして，実構造物に用いられる表面処理が施されたねじ締結体を有する実機モデルに対して，軸力検出を試みる．
令和4年度は，ねじ締結体の解析モデルを構築した．この解析モデルでは実験モデルを再現できない条件があった．令和5年度は，イギリス側では，軸力を考慮したねじ締結体の，より詳細な解析モデルを検討し，そのモデルの有効性を検証した．また，日本側では，3本のボルト，2枚の長方形平板で構成されるねじ締結体を製作し，実験モデルを構築した．
Japan Society for the Promotion of Science, Fund for the Promotion of Joint International Research (Fostering Joint International Research (B)), Shibaura Institute of Technology, 22KK0053

Dynamic characteristic measurement and damage detection of integrated machine/building/infrastructure systems via laser-induced plasma excitation
Grant-in-Aid for Scientific Research
Apr. 2019 - Mar. 2022
KAJIWARA ITSURO
A monitoring system for concrete hardening using laser excitation/measurement was developed in this study. Aluminum (Al) beam inserted in mortar was used as measurement object. Laser beam was irradiated to the Al beam to excite the vibration due to laser ablation and its frequency spectra were measured. It was confirmed that the characteristics on the resonance frequency and damping of the Al beam change as the mortar hardens over time. Moreover, it was found by the finite element analysis that there is a relationship between the hardness of the mortar and the natural frequency of the Al beam inserted in the mortar. By comparing the theoretically calculated frequency with the experimental result, the elastic modulus of the mortar and its variation with time could be estimated. The effectiveness of the developed monitoring system for concrete hardening was verified by some experiments.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, Principal investigator, Competitive research funding, 19H02088

A study on simple origami designs for 3D origami printer system and its origami robot
Grants-in-Aid for Scientific Research
Apr. 2015 - Mar. 2018
Hagiwara Ichiro
In this study, we showed a specification of origami robot with two arms which can fold stiff material. At ASME 2016 Student Mechanism & Robotics Design Competition, one of his students received the Third Place Award by achieving to fold a paper bag by his Lego-based robot. To make origami by origami robot, we needed to solve two problems: to obtain a general rule on robot friendly structures and to get robust control logic. We have overcome the problems and realized the origami robot. It been said that making origami such as current trend biomimetic origami or one-generation-ago origami like “crane” by robot was a big challenge. We developed the way to acquire robot friendly structures by arranging 2D plans and adding appropriate cuts on the plans, then glue on their margins. With this method, the Lego-based origami robot has achieved to make origami.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A), Meiji University, Coinvestigator, 15H02228

Dynamic characteristic evaluation and diagnosis of mechanical / biological systems by the non-contact laser vibrating system　　　　　　　　　　　　　　　
Grant-in-Aid for Scientific Research
2016 - 2018
KAJIWARA ITSURO
Principal investigator, Competitive research funding

Lamb wave generation to detect damage for a wide area of an aircraft using laser-induced plasma
Grants-in-Aid for Scientific Research
Apr. 2014 - Mar. 2017
Hosoya Naoki, Kanda Atsushi
This study aims to realize a non-contact damage detection system for large objects such as an aircraft. Irradiating the target surface with a high-power Nd: YAG pulse laser induces LA and generates Lamb waves. Spectrum analyses on the Lamb waves generated by LA reveal that the Lamb waves contain a broad range of frequency components up to several hundred kHz. The LA-generated Lamb waves have amplitudes several hundred times larger than those generated by conventional laser ultrasonic Lamb waves, improving the SN ratio. The improved SN ratio reduces the required number of measurements, resulting in a shorter measurement time. Thus, the proposed method can be applied to detect damage on a large area of a large structure. The LA-generated Lamb waves were applied to detect a through crack, which was artificially made to simulate damage. Damage causes the reflection and amplitude of the Lamb wave to change, demonstrating the effectiveness of LA-generated Lamb waves to detect damage.
Japan Society for the Promotion of Science, Grant-in-Aid for Challenging Exploratory Research, Shibaura Institute of Technology, Coinvestigator, 26630080

Acoustic Tests in a Micro Space based on a Point Source Generated by Laser-Induced Breakdown
Grants-in-Aid for Scientific Research
Apr. 2012 - Mar. 2014
HOSOYA Naoki, KAJIWARA Itsuro
This paper proposes a method of acoustic vibration testing based on a point source generated by laser-induced breakdown in the air. A high-power Nd: YAG pulse laser is used in this system for generating the laser-induced breakdown in acoustic fields. Plasma formation can be realized by the laser-induced breakdown if the local intensity of the laser beam reaches 1e+15 W/m2. The shock wave that is yielded by consuming a part of the plasma energy becomes a sound source. Assuming that the laser beam is focused to a small volume through a convex lens and the sound source by the laser induced-breakdown has nondirectional property, it is possible to create a point source with this technique. Securing the laser light path installs no device for acoustic excitation in acoustic fields. The system is validated by comparing the resonant frequencies of a micro-space measured by the laser-induced breakdown and calculated by theoretical model.
Japan Society for the Promotion of Science, Grant-in-Aid for Challenging Exploratory Research, Shibaura Institute of Technology, Coinvestigator, 24656158

Development of High Frequency Vibration Measurement and Health Monitoring System Using Contactless Laser Excitation
Grant-in-Aid for Scientific Research
2010 - 2012
KAJIWARA ITSURO
This study developed a vibration testing and health monitoring system based on an impulse response excited by a laser ablation. High power Nd: YAG pulse laser was used for producing an ideal impulse force on structural surface. It was possible to measure high frequency vibration responses in this system. A health monitoring system was constructed by this vibration testing system and a damage detecting algorithm.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (A), Hokkaido University, Principal investigator, Competitive research funding, 22246027

Research on Creating Function of New Lightweight Core Structure and Its Forming Method by Fusion of Computational Mechanics and Origami Engineering
Grants-in-Aid for Scientific Research
2008 - 2012
HAGIWARA Ichiro, SUGIYAMA Fumiko, KOZUKUE Wakae, ZHAO Xilu, NOJIMA Taketoshi, YASUI Takeo, KITAOKA Tetsuko, OSHIMA Shuzo, OOKUMA Masaaki, FUKUSHIMA Naoto, SHINODA Junichi
The forming method of truss core developed by space filling geometry and Origami operation was established, and its application to industry proved that truss core is superior totally to honey comb. The forming method of reverse spiral cylindrical Origami structure as deployable and foldable core was developed, and it was shown that the structure could be excellent energy absorption. Mapping transformation made the range of industry application widen, because it could generate efficiently the complicated folding structures. Finally, Origami theory is applied to generate real copy model which could become the spout of new industry.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (S), Coinvestigator, 20226006

Design of vibration mode shape for composite piezoelectric material by using local anisotropy
Grants-in-Aid for Scientific Research
2010 - 2011
HONDA Shinya, NARITA Yoshihiro, KAJIWARA Itsuro
The present study generated a new function of carbon fiber reinforced laminated materials, known as advanced composite materials with high specific stiffness and strength. New structures of composite materials with curvilinear reinforcement fibers and variable-thicknesses were proposed in this study, and this structure realized local anisotropy in different positions of structures. Optimum placements of local anisotropy induced by optimum curvilinear fiber shape and distributed thickness resulted in controlling shapes of vibration mode arbitrary. The technique was applied to design optimum smart composite structures to enhance the performances of vibration suppression. From above, it is concluded that the present technique enables effective usage or suppression of vibration by considering the shape of vibration mode.
Japan Society for the Promotion of Science, Grant-in-Aid for Young Scientists (B), Hokkaido University, Coinvestigator, 22760164

Innovative vibration test method based on noncontact excitation via laser ablation　　　　　　　　　　　　　　　
JST A-STEP (Feasibility Study)
2009 - 2010
KAJIWARA ITSURO
Principal investigator, Competitive research funding

Develoment of large capacity hard disk drive using smart structure techonogies　　　　　　　　　　　　　　　
JST SEEDS TEST (B)
2008 - 2008
KAJIWARA ITSURO
Principal investigator, Competitive research funding

Develoment of large capacity hard disk drive using smart structure techonogies　　　　　　　　　　　　　　　
JST SEEDS TEST
2007 - 2007
KAJIWARA ITSURO
Principal investigator, Competitive research funding

Remote Control of Micro-Vehicles with Laser and Micro-Optics System
Grant-in-Aid for Scientific Research
2006 - 2007
KAJIWARA ITSURO
This study presents the development of the integrated laser tracking/control/energy transmission system. First, the LPFM laser control approach for laser-driven micro-vehicles is proposed and the integrated laser tracking/control system is developed. The laser control system is a key technology to achieve remote control of laser-driven micro-vehicles. With the LPFM laser control, both long-distance remote control and high-speed positioning are achieved since laser performs long-distance transmission and the output is rapidly variable. In addition, communication using laser beam can make a resolution to prevent interference and tapping unlike radio communication. In order to integrate each system on the laser tracking and control, both laser tracking/control systems and dielectric mirrors are synthesized in the total system. Next, the constitution and function of LPFM laser control of laser-driven micro-vehicle is shown and a fundamental experiment of LPFM laser control is conducted. Furthermore, experiments with a miniature vehicle are carried out to confirm the performance of the developed system. Finally, the integrated laser tracking/control/energy transmission system is developed by synthesizing the integrated laser tracking/control system and a laser energy transmission system. The purpose of the energy transmission system is to transmit energy to the micro-vehicle with high-power laser and to drive it. Solar cell is used as the photoelectric conversion element. The optical system is constructed by some dielectric mirrors to integrate two systems without interference. The fundamental system is developed and its performance is evaluated throughout the experiment.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C), Tokyo Institute of Technology, Principal investigator, Competitive research funding, 18560225

Multidisciplinary Design Optimization of Structure/Fluid/Control and Application for Micro-Air Vehicle Development
Grant-in-Aid for Scientific Research
2002 - 2004
KAJIWARA ITSURO
A multidisciplinary design optimization method of Structure/Fluid/Control has been proposed to achieve the required performance of advanced mechanical system. An approach for optimization technology of the placement of the piezoelectric actuators and the control system in smart structures has been developed to improve the vibration control performance. The modeling approach based on FEA and modal analysis is appropriate to obtain the reduced-order system which is used for designing the control system. The optimal placement of the piezoelectric actuators and control system have been simultaneously designed by the presented two-step procedure with GA. The proposed method is applied to designing some mechanical systems to evaluate the effectiveness of the method. It has been verified from this study that the complexity of the optimization algorithm and the calculation efficiency are significantly improved and the enhanced control performance can be achieved by the proposed multidisciplinary design optimization method. Next, the laser tacking system and the integrated laser propulsion/tracking system have been designed and developed as elemental and key technologies for realizing an actual flight and control of the laser-driven micro-airplane. First, the characteristics and the performance of the developed laser tracking system composed of the He-Ne laser, condenser, beamsplitter, PSD and galvano-mirror have been evaluated by the experiment. It has been verified that the laser is traced to the moving reflector with the required accuracy in this system. Next, the integrated laser propulsion/tracking system has been developed with the laser tracking system, the YAG laser and the optical system. It has been verified that the repetitive ablation on the moving target has been caused by the developed laser propulsion/tracking system that is available to achieve the continuous flight and control of the laser-driven micro-airplane.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Tokyo Institute of Technology, Principal investigator, Competitive research funding, 14350118

Development of evolutionary structural optimization design under kinematics and control system
Grants-in-Aid for Scientific Research
2001 - 2003
OKUMA Masanki, NAKAHARA Takeshi, TAMURA Shinji, KAJIWARA Itsuro
The purpose of this research is to develop a new evolutionary structural optimization design methods under kinematics and control system and, in addition, to investigate the structural advanced feature of dragonflies from the viewpoint of structural dynamics. New evolutionary structural optimization methods for static and dynamics have been developed. Then, their advantages and practical usefulness have been investigated using some kinds of basic application studies. This research has published some valuable technical papers and reports and has eventually obtained a ph.D degree to a graduate student of ph.D course who contributed to this research project The dependency problem of initial structures was deeply investigated and was made weak to optimum solutions. This investigation invented the new evolutionary structural optimization. Therefore, the method steadily creates very good results. A cantilever model, a bridge model and a connecting rod in engine etc. were optimally designed by the methods and their good results were obtained. In addition, a health monitoring system is developed as a kind of artificial nerve system for mechanical structural systems. Because the structures to be designed by such evolutionary optimization methods should be implemented such self-monitoring systems. Very precise investigation of dragonfly wings was carried out from the viewpoint of str-uctural dynamics. Vibration testing gave the fundamental natural frequencies and natural modes of the wings. Vein network pattern was accurately measured using a digital microscope and a finite element model of a dragonfly wing was created. The finite element model is available for various computer simulation studies. Finally, the result of this research will be able to create the possibility and usefulness of future development on this sort of research works to the investigators and others
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Tokyo Institute of Technology, Coinvestigator, 13450091

Development of laser propulsion micro airplane by integrated optimal design of the structure / fluid / control
Grant-in-Aid for Scientific Research
2002 - 2002
KAJIWARA ITSURO
レーザーにより推進力を発生させるメカニズムを応用したマイクロ飛行機の開発に向け,それを実現するためのレーザー推進メカニズムの解明,ならびにレーザー追尾システムおよびスマート翼の開発を行った.本研究で開発したレーザー追尾システムは,レーザー偏光ビームスピリッタ,ガルバノミラーおよび光検出器により構成される.計測原理は,レーザー光がガルバノミラーを経由してマイクロ飛行機のリフレクターに照射され,その反射光がガルバノミラーを経て偏光ビームスピリッタにより光検出器へと導かれ,ここで位置誤差に関する信号検出が行われる.ここで,ガルバノミラーは,DCモーターにより縦・横方向に回転できる機構になっており,光検出器からの信号よりディジタル制御システムにより制御入力が演算され,それによってガルバノミラーを回転させることにより,レーザーを目標に追尾させる.制御手法としては,PID制御および混合H_2/H_∞制御を検討したが,両者とも優れた制御性能を示した.次に,マイクロ飛行機の小型化・軽量化を行いながら飛行制御を実現するために,アクチュエータとして形状記憶合金(SMA)を採用し,フォトトランジスタをスイッチング素子として利用した光学系を導入することにより,外部からのレーザー照射によって遠隔制御可能なスマート翼を開発した.翼に入射したレーザーはビームスプリッタによってコーナーキューブリフレクターとフォトトランジスタに入射する.リフレクターに入射したレーザーは前述のレーザー追尾に使用され,フォトトランジスタに入射するレーザーは翼の制御に使用される.フォトトランジスタはSMAへの電圧印加のスイッチとして機能し,レーザーが入射している間,電圧が印加されSMAが変形する.レーザーのオン・オフによる制御実験を行ったところ,SMAの応答性の範囲内で目標値に対する良好な追従性能が達成された.
日本学術振興会, 萌芽研究, 東京工業大学, Principal investigator, Competitive research funding, 14655091

Integration design method of structure and control system in smart structures
Grant-in-Aid for Scientific Research
2000 - 2001
KAJIWARA ITSURO
本研究では,振動制御の機構としてスマート構造を用い,諸性能の向上を達成すべく,アクチュエータ形状/配置と制御の同時設計方法を提案・開発した.同時に,有限要素法(FEM)とモード解析法に基づく低次元モデル化法およびモード制御法を示し,実験による検証を行った.アクチュエータの適切な形状/配置を決定することは,少ない制御エネルギーで高い制振効果を得るために重要なことであり,アクチュエータ形状を含めた機構設計と制御系設計を融合する意義は大きく,高性能化の達成が期待できる.スマート化の基礎となるアクチュエータおよびセンサを圧電フィルムにより構成した.圧電フィルムは非常に軽薄な高分子材料であるため,取り付けが容易であり,柔軟構造のスマート化に適している.固定部を要しないセンサとして,圧電フィルムの他に加速度センサを用いる場合についても検討した.圧電アクチュエータの形状に関する設計変数を,制御対象のFEMモデルに対応する圧電フィルムの幅,配置に関する設計変数をFEMモデルの節点番号とした.H_2性能の向上を目指した設計問題を定義し,圧電フイルムアクチュエータの形状/配置と制御系を同時に最適化した.最適化手法としては,圧電アクチュエータ形状を設計変数とする場合は逐次二次計画法,配置を設計変数とする場合は遺伝的アルゴリズム(GA)を用いた.シミュレーションおよび実験を行い,達成される振動抑制効果および同時最適化の有効性を評価した.さらに,提案した圧電アクチュエータ配置と制御系の同時最適設計法を磁気ディスクアームの制振設計に応用し,その有効性および実用性を検証した.
日本学術振興会, 奨励研究(A), 東京工業大学, Principal investigator, Competitive research funding, 12750178

線形行列不等式に基づく構造系と制御系の統合最適設計法の構築と実用化
科学研究費助成事業
1998 - 1999
梶原 逸朗
先端情報機器に要求される諸性能の向上を目指し、スマート構造を利用した知的構造物における形状と制御の統合最適化方法を、非線形最適化法と線形行列不等式に基づいて構築した。スマート化構造物には、それ自身にセンサー/アクチュエータ機能を有しており、構造形状を含めた機構設計と制御系設計を融合する意義は大きく、高性能化を達成できることを明らかにした。本研究では、制御性を考慮した構造設計および同時最適設計の両面から適切な問題設定について考察し、達成される性能および両者の得失を評価した。また、フレキシブルリンク機構を対象とし、スマート構造を導入した機構と制御の最適化を図り、達成される高速位置決めと振動制御の性能評価および検証を行った。統合設計における構造系の設計変数としては、対象とする構造の形状、寸法とした。制御方法は、周波数領域および時間領域の設計を包括的に扱うことができる線形行列不等式に基づく方法を採用した。すなわち、制御性能の指標として、システム方程式における外乱から制御量までのH_2ノルム、さらにロバスト安定性に関しては伝達関数行列のH_∞ノルムを採用し、要求される諸性能を線形行列不等式により統合的に記述する。そして、構造系に要求される小型化・軽量化を最適化問題の中に導入する。構造系と制御系の各特性、および統合系としての諸性能を用いて、統合最適化問題を定義する。この問題を、逐次二次計画法とLMIソルバーを結合したアルゴリズムにより解き、最適な構造系と制御系と同時に決定する手法を提案・構築した。そして、動的シミュレーションおよび実験により、提案したモデル化手法と統合設計法の有効性を実証した。
日本学術振興会, 奨励研究(A), 東京工業大学, 10750166

線形行列不等式に基づく構造系と制御系の統合最適設計法の構築と実用化
科学研究費助成事業
1997 - 1997
梶原 逸朗
日本学術振興会, 奨励研究(A), 東京工業大学, Principal investigator, 09750252

Integrated Optimum Design of Structure and Servosystem in Information Processing Equipments
Grants-in-Aid for Scientific Research
1996 - 1996
NAGAMATSU Akio, TSUJIOKA Kazuaki, KAJIWARA Itsuro, OKUMA Masaaki
This study presents approaches for optimum design of structure and servosystem to realize higher performances concerning the positioning and the stability. The proposed approaches use the sensitivity analysis and the nonlinear programming method, in which the integrated optimum design of structure and servosystem is taken into consideration. The performance specifications of the control system are generally expressed as the cahracteristics on frequency and time domains Therefore, this study considers two types of the servosystem, namely one is composed of dynamic compensator such as phase-lead and phase-lag compensators in order to deal with the desired frequency characteristics, and the other is composed of LQI control system in which the controller is desighed to achieve the desired transient responses. The original spatial model of a structure with large degrees of freedom (DOF) is made by the finite element method (FEM). The perfomances and the stability of the servosystem depend on the structural characteristics such as the gain and the phase properties of frequency response function (FRF) between the control input and the output signals. Higher performances of the servo properties and stability of the closed-loop system against the high order natural modes are achieved by the integrated optimization presented in this study. Two modal models are made from the original spatial model, namely one is the reduced modal odel of small DOF and the other is the original modal model of medium DOF.The properties of the servosystem composed of the reduced modal model are optimized under the constranit that the closed-loop system composed of the original modal model must be stable. Effectiveness and practicability of the approaches are verified with a simplified model structure of a positioning device.
Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Tokyo Institute of Technology, Coinvestigator, 08455111

Enhancement of time/frequency domain performance of information devices via integrated optimization
Grant-in-Aid for Scientific Research
1996 - 1996
KAJIWARA ITSURO
構造物の動特性の性能向上を図るために、トポロジを考慮した任意形状最適化を可能にする構造最適設計法を開発した.本手法では、設計変数としてFEM要素の板厚、節点座標および要素の有無を採用している.最適化手法として遺伝的アルゴリズムを用いることにより、これらの設計変数の最適化を実現している.そして、時間領域特性と周波数領域特性を考慮した制御系の最適化手法を開発した.周波数領域の制御方法として、位相補償による動的補償器を用いて高次モードの安定性を保ちながら追従誤差を最小にする制御系設計法を提案した.次に、時間領域の制御方法として、LQI制御理論を用いた制御系設計法を開発することにより、アクセス時間の短縮を実現する最適設計を可能にした.ここで、設計変数としては動的補償器のパラメーター、LQI理論における重み係数行列とした.
さらに、アクセスサーボの高性能化を実現するために、構造系と制御系の統合最適設計法の開発を行った.本手法では、サーボ系のループゲイン、アクセス時間、構造系の不確定性に対するロバスト性能、構造系の質量および形状を用いて最適化における目的関数および制約条件を定義している.そして、要求される設計仕様を含めて統合最適化問題の設定を行い、構造系と制御系の両設計変数に関する感度解析手法を確立させ、実現可能な性能とそのときの最適な両設計変数を決定する手法の開発およびプログラミングを行った.最適化手法としては、逐次二次計画法および遺伝的アルゴリズムを用い、連続設計変数と離散設計変数の同時最適化、ならびに大域的な最適解の探索を可能にしている。
上述の方法を用いて、位置決め制御機構の設計および試作を行い、シミュレーションおよび実験により提案手法の有効性を検証した.
日本学術振興会, 奨励研究(A), 東京工業大学, Principal investigator, Competitive research funding, 08750265

構造系と制御系の統合最適設計による情報機器の追従制御機構の性能向上
科学研究費助成事業
1995 - 1995
長松 昭男, 辻岡 一明, 梶原 逸朗, 大熊 政明
振動制御系と位置決め制御機構の高性能化を達成するために、構造系と制御系の統合設計法の提案および開発を行った。本方法は、遺伝的アルゴリズムと感度解析法を用いた非線形計画法に基づいており、制御性を考慮した構造最適化および構造系と制御系の統合最適化の両方を実行可能である。構造系と振動制御系の統合最適化では、制御系としてH^∞制御系を採用し、遺伝的アルゴリズムを用いて構造物形状と制御則、さらにセンサーおよびアクチュエーターの配置最適化を行うことにより、高性能な周波数整形を可能にした。構造系とサーボ系の統合最適化では、周波数領域と時間領域の性能に対応するために2種類のサーボ系を導入した。すなわち、1入出力系に対して用いられる動的補償器と、多入力系に対して設計されるLQI制御系である。サーボ性を考慮した構造最適化では、制御対象の固有振動数と固有モードをサーボに適した周波数応答が実現されるように最適化する方法を開発した。構造系と動的補償器の統合最適化では、着目する全てのモードの安定性を維持しながら、サーボ性能を左右する主要な極の配置を最適化し、閉ループ系に要求される周波数特性を達成することを可能にした。構造系とLQI制御系の統合最適化では、閉ループ系の安定性を維持しながら、目標入力に対する時間領域での高速追従性能を実現した。本研究で提案・開発した方法を簡易構造の位置決めデバイスの統合設計に適用し、その有効性と実用性を検証している。
日本学術振興会, 一般研究(B), 東京工業大学, 07455102

Integrated Optimum Design of Structure and Servosystem in Information Processing Devices
Grant-in-Aid for Scientific Research
1995 - 1995
KAJIWARA ITSURO
情報機器が内蔵する位置決め制御機構の高性能化を達成するために、構造系と制御系の統合設計法の提案および開発を行った。本方法は、遺伝的アルゴリズムと感度解析法を用いた非線形計画法に基づいており、制御性を考慮した構造最適化および構造系と制御系の統合最適化の両方を実行可能である。まず、位置決め時に構造系が発生する残留振動により追従性能が劣化するのを防止するために、構造系とH^∞制御系の統合最適設計法を開発した。ここでは、遺伝的アルゴリズムを用いて構造物形状と制御則、さらにセンサーおよびアクチュエーターの配置最適化を行うことにより、高性能な周波数整形を可能にし、位置決め制御系における残留振動問題を改善した。構造系とサーボ系の統合最適化では、周波数領域と時間領域の性能に対応するために2種類のサーボ系を導入した。すなわち、1入出力系に対して用いられる動的補償器と、多入力系に対して設計されるLQI制御系である。サーボ性を考慮した構造最適化では、制御対象の固有振動数と固有モードをサーボに適した周波数応答が実現されるように最適化する方法を開発した。構造系と動的補償器の統合最適化では、着目する全てのモードの安定性を維持しながら、サーボ性能を左右する主要な極の配置を最適化し、閉ループ系に要求される周波数特性を達成することを可能にした。構造系とLQI制御系の統合最適化では、閉ループ系の安定性を維持しながら、目標入力に対する時間領域での高速追従性能を実現した。本方法を簡易構造の位置決めデバイスの開発に適用した結果、手法の有効性と実用性が確認された。
日本学術振興会, 奨励研究(A), 東京工業大学, Principal investigator, Competitive research funding, 07750255

High-speed positioning of auto-focus mechanism via optimization
Grant-in-Aid for Scientific Research
1994 - 1994
KAJIWARA ITSURO
本研究では、まずサーボ性を考慮した構造系の最適化を感度解析により実行する方法を提案している。この最適化方法により、サーボ性能と安定性を向上させるための構造物の固有振動数と固有モードの最適化を可能にした。そして、感度解析を用いた構造系とサーボ系の統合最適設計法の提案および開発を行った。この方法は、構造系の形状、制御系の比例ゲインおよび動的補償器のパラメータを設計変数とし、サーボ性能を向上させるための各設計変数の最適値を決定するものである。これらの方法を用いて、位置決め制御機構の簡易モデルの最適設計および実験を行うことにより、手法の有効性を検証している。
次に、高性能な周波数応答の整形を実現させるために、構造系とH^∞制御系の統合設計手法の開発を行った。まず、コンプレックス法による構造系とH^∞制御系の統合設計法の提案および開発を行い、さらにセンサー、アクチュエータ配置を含めた統合設計手法の開発を行っている。後者の方法では、最適化手法として遺伝的アルゴリズムを用いることにより、設計変数が離散値となるセンサー、アクチュエータ配置の最適化を可能にし、構造系との連携においてより自由度の高い設計を行うことを可能にしている。さらに、動的補償器の次数を増やさずに複数のモードの制振を行える、モード重み係数を用いたH^∞制御系の設計法を提案し、その実用性を検証している。
日本学術振興会, 奨励研究(A), 東京工業大学, Principal investigator, Competitive research funding, 06750226

DEVELOPMENT AND PRACTICE OF SIMULTANEOUS OPTIMUM DESIGN OF STRUCTURE AND CONTROL SYSTEM
Grants-in-Aid for Scientific Research
1993 - 1994
NAGAMATSU Akio, YAMAGUCHI Masakatsu, KAJIWARA Itsuro, OKUMA Masaaki
This study proposes new optimum design methods of structure and control system. Forst, a structural topology optimization method based on the genetic argorithm is presented. The fitness function composed of a natural frequency is maximized by optimizing the topology of the structure. The optimum topology of the structure is determined by optimizing the placement of the finite elements in FEM analysis. In the optimum design based on the genetic argorithm, the computer burden should be decreased for practical use. This study improves the genetic operations with respect to the crossover and the mutation in order to improve the efficiency of the calculation. Furthermore, the higher efficiency of the calculation is achieved by the model reduction in structural analysis. Effectiveness and practicability of the proposed approach are verified by optimizing the topology of the guide-arm installed in the magnetic disk device. Next, this study proposes a sumultaneous optimum design method of structure and control system by which to design an optimum servosystem composed of continuous body structures using modal analysis and sensitivity analysis. The mechanical structures is modeled first by FEM.This spatial model are of such high degree of freedom that a control system cannot be designed. This spatial model is transformed into a modal model in order to reduce DOF.The servosystem is composed with the reduced model and a dynamic compensator. However, stability of the control system is not always guaranteed because the modal model ignores high-order modes. An simultaneous optimization method of the structure and the control system which guarantees stability of the actual system is proposed in this study. The optimization is performed using sensitivity analysis and nonlinear programming. The effectiveness of the proposed method is verified by both simulation and experiment.
Japan Society for the Promotion of Science, Grant-in-Aid for General Scientific Research (A), Tokyo Institute of Technology, Coinvestigator, 05402034

Vibration control of vehicle system via simultaneous optimization of structure and control system
Grant-in-Aid for Scientific Research
1993 - 1993
KAJIWARA ITSURO
構造系とH^∞制御系の同時最適設計を、モード解析とコンプレックス法により実行する方法を提案した。構造系のモデル化には有限要素法を適用し、モード座標に変換することによりシステムの低次元化を行い、これに対しH^∞制御系を設定する。そして、構造系とH^∞制御系を同時に最適化することにより、閉ループ系の周波数特性の高性能化とロバスト安定性の向上を実現させる。本研究で設定した同時最適化問題では、外乱から制御量までのH^∞ノルムを目的関数として採用している。また、設計変数としては構造物の寸法と目的関数でもあるH^∞ノルムを同時に採用する。このとき、目的関数は設計変数に対して不連続関数となり、目的関数の感度を用いて設計変数の最適解を探索する通常の最適化手法は適用できない。そこで、ランダム探索法の一つであり、目的関数の感度を用いずに設計変数の最適解を探索するコンプレックス法を用いることにより、同時最適化を可能にしている。また、構造系の質量を最適化問題に導入することにより、制御性能と質量のバランスのとれた設計を実現している。提案する方法を基礎モデルで構成される振動制御系の同時最適化に適用したところ、周波数応答特性の最適化が実現され、本手法の有効性を実証している。
日本学術振興会, 奨励研究(A), 東京工業大学, Principal investigator, Competitive research funding, 05750213

Robust control of optical head actuator via simultaneous optimization of structure and control system
Grant-in-Aid for Scientific Research
1992 - 1992
KAJIWARA ITSURO
日本学術振興会, 奨励研究(A), 東京工業大学, Principal investigator, Competitive research funding, 04750193

Design of an Optical Servosystem using a Simultaneous Optimization of Structure and Control System
Grants-in-Aid for Scientific Research
1991 - 1992
NAGAMATSU Akio, YAMAGUCHI Masakatsu, KAJIWARA Itsuro, OKUMA Masaaki
This study proposes a new design concept that takes into consideration the construction of a mechanism that consists of a structural system and a control system. Firstly, a method for structural dynamic optimization is proposed using sensitivity analysis of resonance and anti-resonance frequencies. The sensitivity of the anti-resonance frequency is newly defined. An approach for eliminating the resonance peak from the frequency response function (FRF) is proposed using this sensitivity, modifying both the frequencies of this resonance and the neighboring anti-resonance bottom to the same value. Optimum design of an optical actuator for a compact disk player is performed practically by eliminating resonance peaks which deteriorates its servo control function. The player, with this optimized actuator, shows an excellent performance of sound playback. Next, an approach is presented for simultaneous optimum design of structure and control system. The design variables of both structure and control parameters are optimized simultaneously by the sensitivity analysis in order to minimize the response dur to disturbances of both white noise and colored noise under the constraining condition that the system is stable against high order natural modes. Three kinds of model are adopted in this approach, namely the original spatial model by FEM, the reduced modal model for designing control system and the original modal model for assuring stability of the system. Validity and usefulness of the presented approach are verified by an experiment of vibration control with a steel plate.
Japan Society for the Promotion of Science, Grant-in-Aid for General Scientific Research (B), Tokyo Institute of Technology, Coinvestigator, 03452139

Automotive vibration suppression via simultaneous optimization of structure and control system
Grant-in-Aid for Scientific Research
1991 - 1991
KAJIWARA ITSURO
日本学術振興会, 奨励研究(A), 東京工業大学, Principal investigator, Competitive research funding, 03750165

硬化体解析方法、硬化体解析システム、硬化体解析装置、及び硬化体解析プログラム　　　　　　　　　　　　　　　
Patent right, 竹本喜昭, 齊藤亮介, 梶原逸朗, 北海道大学
特願2019-149080, 19 Oct. 2020
特許7486745, 10 May 2024
竹本喜昭;齊藤亮介;梶原逸朗

構造物の振動特性の測定方法及び構造物の振動特性の測定装置　　　　　　　　　　　　　　　
Patent right, 齊藤亮介, 梶原逸朗, 北垣亮馬, 北海道大学
15 Aug. 2019
特許7319626, 25 Jul. 2023
齊藤亮介;梶原逸朗;北垣亮馬

振動特性計測用の発射装置、加振力入力具、振動特性計測システム及び振動特性計測方法　　　　　　　　　　　　　　　
Patent right, 細矢直基, 梶原逸朗
特願2018-125879, 02 Jul. 2018
特許7246593, 17 Mar. 2023
細矢直基;梶原逸朗

Method for Measurement of Vibration Property of Structure, and Vibration Property Measurement Device　　　　　　　　　　　　　　　
Patent right, Kajiwara, I, Hosoya, N
特願11795411.5, 17 Dec. 2012
特許2584335(欧州特許)
27 Mar. 2019

Active vibration control device and design method therefor　　　　　　　　　　　　　　　
Patent right, Arisaka, T, Saegusa, T, Kajiwara, I
特許9947361(米国特許)
17 Apr. 2018

能動型防振装置及び能動型防振方法　　　　　　　　　　　　　　　
Patent right, 金堂雅彦, 松本圭一郎, 梶原逸朗
特願2013-173086
特許6207063
15 Sep. 2017

能動型防振装置　　　　　　　　　　　　　　　
Patent right, 佐藤祐介, 金堂雅彦, 梶原逸朗
特願2012-102625
特許5955083
24 Jun. 2016

Method for Measurement of Vibration Property of Structure, and Vibration Property Measurement Device　　　　　　　　　　　　　　　
Patent right, Kajiwara, I, Hosoya, N
特願13/704,439
特許9291604(米国特許)
22 Mar. 2016

MRE用の加振装置、加振システム、および加振方法　　　　　　　　　　　　　　　
Patent right, 但野茂, 梶原逸朗, 藤崎和弘, 高尾聖心, 中村玄, 江渝, 菅幹生
特願2010-188514
特許5773171
10 Jul. 2015

構造物の振動特性の測定方法および振動特性測定装置　　　　　　　　　　　　　　　
Patent right, 梶原逸朗, 細矢直基
特願2012-520295
特許5750788
29 May 2015

内燃機関の制御方法及び制御装置　　　　　　　　　　　　　　　
Patent right, 梶原逸朗, 花村良文, 佐藤淳一, 高田博
特願2009-100324
2010-249057
特許5347676
30 Aug. 2013

振動低減装置のコントローラの設計法、振動低減装置のコントローラ及び振動低減装置　　　　　　　　　　　　　　　
Patent right, 梶原逸朗, 加藤弘敏, 佐藤祐介
特願2007-096660
2008-257348
特許4991036
11 May 2012