田中 孝之 (タナカ タカユキ)

情報科学研究院 システム情報科学部門 システム創成学分野教授
数理・データサイエンス教育研究センター教授
総合イノベーション創発機構データ駆動型融合研究創発拠点教授
Last Updated :2025/06/10

■研究者基本情報

学位

  • 博士(工学), 電気通信大学

プロフィール情報

  • ロボット工学,人間工学を基盤として,人間中心のものづくりができる人材育成を目指しています.人の手による作業の負担軽減を目的とした「軽労化®技術」の研究開発では,軽労化スーツ「スマートスーツ®」を開発し,実際に農業や介護の現場で使っていただける技術を,メーカー,ユーザーと一緒に創り上げています.役に立つ,夢のある技術を一緒に作りませんか?

Researchmap個人ページ

研究キーワード

  • パワーアシスト
  • 筋骨格モデル
  • 筋活動センシング
  • ペットロボット
  • 生物型ロボット
  • 視覚情報
  • 画像計測
  • 生体計測システム
  • 移動ロボット
  • ウェアラブルロボット
  • 人間機械システム
  • Mobile Robot
  • Wearable Robot
  • Human-Machine System

研究分野

  • 情報通信, ヒューマンインタフェース、インタラクション
  • 情報通信, データベース
  • ものづくり技術(機械・電気電子・化学工学), 計測工学
  • 情報通信, 知能ロボティクス
  • 情報通信, 知覚情報処理
  • 情報通信, 機械力学、メカトロニクス
  • 情報通信, ロボティクス、知能機械システム

担当教育組織

■経歴

経歴

  • 2025年01月 - 現在
    北海道大学, 総合イノベーション創発機構データ駆動型融合研究創発拠点
  • 2023年05月 - 現在
    北海道大学, 数理・データサイエンス教育研究センター, 副センター長
  • 2023年04月 - 現在
    産業医科大学, 産業生態科学研究所, 非常勤講師
  • 2022年04月 - 現在
    北海道大学, 大学院情報科学研究院, 研究院長補佐
  • 2021年01月 - 現在
    北海道大学, 大学院情報科学研究院, 教授
  • 2024年12月 - 2024年12月
    北海道大学, 創成研究機構データ駆動型融合研究創発拠点
  • 2019年04月 - 2020年12月
    北海道大学, 大学院情報科学研究院, 准教授
  • 2007年04月 - 2019年03月
    北海道大学, 大学院情報科学研究科, 准教授
  • 2004年04月 - 2007年03月
    北海道大学, 大学院情報科学研究科, 助教授
  • 2003年04月 - 2004年03月
    電気通信大学, 知能機械工学科, 助教授
  • 1996年04月 - 2003年03月
    電気通信大学, 知能機械工学科, 助手

学歴

  • 1996年, 電気通信大学, 電気通信学研究科, 機械制御工学専攻, 日本国
  • 1994年, 電気通信大学, 電気通信学部, 機械制御工学科, 日本国

委員歴

  • 2025年04月 - 現在
    日本機械学会ロボティクス・メカトロニクス部門, 部門長, 学協会
  • 2007年04月 - 現在
    ロボティクスシンポジア運営委員会, 運営委員
  • 2024年04月 - 2025年03月
    日本機械学会ロボティクス・メカトロニクス部門, 副部門長, 学協会
  • 2022年10月 - 2025年03月
    HCMIコンソーシアム北海道拠点, 拠点長, その他
  • 2020年04月 - 2025年03月
    ロボティクスシンポジア運営委員会, 運営委員長, 学協会
  • 2014年01月 - 2024年12月
    Journal of Robotics and Mechatronics, Deputy Chief Editor, その他
  • 2010年04月 - 2020年03月
    ロボティクスシンポジア運営委員会, 幹事
  • 2017年02月 - 2020年02月
    計測自動制御学会, 理事,監事, 学協会
  • 2013年09月 - 2017年12月
    計測自動制御学会 システムインテグレーション部門, 運営委員, 学協会
  • 2015年04月 - 2016年03月
    日本機械学会ロボティクスメカトロニクス部門, 運営委員, 学協会
  • 2016年
    第17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, 実行委員長, 学協会
  • 2013年01月 - 2014年12月
    計測自動制御学会, 評議員, 学協会
  • 2011年04月 - 2013年03月
    日本ロボット学会, 理事, 学協会
  • 2008年 - 2011年
    計測自動制御学会, 北海道支部 幹事, 学協会
  • 2008年 - 2009年
    精密工学会, 北海道支部 幹事, 学協会
  • 2007年 - 2008年
    日本機械学会, 機素潤滑部門運営委員, 学協会
  • 2006年 - 2007年
    計測自動制御学会, 論文集委員, 学協会
  • 2007年
    日本ロボット学会, 北海道ロボット技術研究専門委員会 幹事, 学協会
  • 2004年 - 2006年
    計測自動制御学会, システムインテグレーション部門運営委員, 学協会
  • 2004年 - 2006年
    日本ロボット学会, 評議員, 学協会
  • 2004年
    日本機械学会, ロボティクスメカトロニクス部門欧文編集委員, 学協会
  • 1999年 - 2002年
    日本機械学会, ロボティクスメカトロニクス部門技術員会 委員, 学協会
  • 計測自動制御学会, システムインテグレーション部門 運営委員, 学協会
  • 日本機械学会, ロボティクスメカトロニクス部門 運営委員, 学協会

学内役職歴

  • 数理・データサイエンス教育研究センター副センター長, 2023年5月1日 - 2025年3月31日

■研究活動情報

受賞

  • 2025年06月, 日本機械学会ロボティクス・メカトロニクス部門, 分野融合研究優秀表彰
    Development of Augmented Jump SLIP model and Its Optimization based on Impulse Analysis
    Saizo Kamei;Takashi Kusaka;Taro Nakamura;Fumio Ito;Takashi Itsuno;Riku Takakuwa;Takayuki Tanaka, 37208901
  • 2025年06月, 日本機械学会ロボティクス・メカトロニクス部門, ROBOMECH表彰(産業・実用分野)               
    余事象動作を考慮した隠れセミマルコフモデルを用いたロバストな介護動作識別
    島田 悠之介;迎田 隆幸;日下 聖;遠藤 維;多田 充徳;宮田 なつき;田中 孝之
  • 2025年02月, 計測自動制御学会システムインテグレーション部門, SI2024優秀講演賞               
    作業者の運動計測と作業環境のデジタルツインに基づく軽労化DX
    日下 聖;草場 信之;岡田 繁;東 陽介;鈴木 善人;田中 孝之
  • 2024年05月, 日本機械学会ロボティクス・メカトロニクス部門, ROBOMECH表彰(産業・実用分野)               
    外壁タイル非破壊検査のための電磁波多層走査法による空隙深さとサイズの同時推定
    田中孝之;アッサリム・ホセイン;本田匠;大野湧人;内田茂
  • 2023年02月, 産業応用工学会, 論文賞
    残存機能を活用した立ち座り動作支援機器における適正アシスト力の選定と評価
    三上 隼人;土谷 圭央;田中 孝之;和田 親宗
  • 2022年09月, 計測自動制御学会, フェロー称号               
    田中孝之
  • 2022年06月, 日本水産工学会, 水産工学論文賞               
    近海かつお一本釣漁業の漁獲物搬出作業における軽労化支援スーツの効果
    髙橋秀行;安田健二;田中孝之, 学会誌・学術雑誌による顕彰, 日本国
  • 2021年11月, 日本再生医療とリハビリテーション学会, 第3回日本再生医療とリハビリテーション学会学術大会
    最優秀賞
    吉田道拓;田中孝之;土谷圭央, 国内学会・会議・シンポジウム等の賞, 日本国
  • 2020年12月, 計測自動制御学会システムインテグレーション部門, 部門研究奨励賞               
    X線画像解析に基づく腰部締付力による人体腰部の関節剛性変化のモデル化
    吉田道拓;田中孝之;金子勇斗;土谷圭央;神島保
  • 2019年03月, 計測自動制御学会システムインテグレーション部門, SI2018優秀講演賞               
    杖型立ち座り支援器具
    田中孝之;勝長達平;橋元裕紀;平石聖;土谷圭央
  • 2018年, 日本ロボット学会, フェロー               
    田中 孝之
  • 2017年12月, 計測自動制御学会システムインテグレーション部門, 部門貢献賞               
    田中 孝之
  • 2017年01月, 北海道大学, 北海道大学研究総長賞               
    田中 孝之
  • 2016年02月, 北海道, 北海道科学技術奨励賞               
    軽労化技術スマートスーツの研究開発と普及活動
    田中 孝之
  • 2014年01月, 日本機械学会, フェロー               
    田中 孝之
  • 2012年, 第24回中小企業優秀新技術・新製品賞 産学官連携特別賞               
    日本国
  • 2011年, 2011年度精密工学会北海道支部優秀プレゼンテーション賞               
    日本国
  • 2011年, ヒューマンインタフェース学会論文賞               
    日本国
  • 2010年, 日本機械学会ロボティクス・メカトロニクス部門貢献表彰               
    日本国
  • 2009年, 計測自動制御学会システムインテグレーション部門貢献賞               
    日本国
  • 2009年, 日本機械学会北海道支部賞(研究技術賞)               
    日本国
  • 2008年, SI2008優秀講演賞               
    日本国
  • 2008年, (社)精密工学会2008年度北海道支部学術講演会技術賞               
    日本国
  • 2008年, 計測自動制御学会論文賞               
    日本国
  • 2007年, ICROS ICCAS2007 Student Paper Award               
  • 2007年, SPIE ISOT2007 Best Paper Award               
  • 2007年, 画像センシングシンポジウム優秀論文賞               
    日本国
  • 2007年, ICROS ICCAS2007 Student Paper Award               
  • 2007年, SPIE ISOT2007 Best Paper Award               
  • 2006年, SI2006優秀講演賞               
    日本国
  • 2006年, (社)精密工学会2006年度北海道支部学術講演会技術賞               
    日本国
  • 2005年, SPIE ISOT2005 Best Student Paper Award               
  • 2005年, SPIE ISOT2005 Best Student Paper Award               
  • 2004年, SI2004ベストセッション賞               
    日本国
  • 2003年, SI2003優秀講演賞               
    日本国

論文

  • Enhancement of precision in electromagnetic radar exterior wall inspection through model-based analysis of measurement uncertainty
    Keina Kitaura, Takashi Kusaka, Takumi Honda, Takayuki Tanaka
    ROBOMECH Journal, 12, 1, Springer Science and Business Media LLC, 2025年05月29日, [査読有り], [最終著者]
    英語, 研究論文(学術雑誌), A model-based approach using tile-based models was developed to estimate the depth and size of voids within exterior walls. However, during field applications with portable devices, antenna misalignment has been identified as a key factor reducing the accuracy of these estimations. To address this issue, an index was proposed to evaluate measurement uncertainty through model-based analysis, enhancing data accuracy. Additionally, data accuracy was improved by incorporating labeling from electromagnetic radar and hammering inspection results. The efficacy of the proposed method was validated through data analysis from building exterior wall inspections at construction sites, followed by comparisons of the estimated results. Notably, when classifying tiles as healthy or defective, linear separations in void depth and size increased by 0.549, while separation in void size increased by 0.522.
  • Uncertain Shape and Deformation Recognition Using Wavelet-Based Spatiotemporal Features
    Haruka Matoba, Takashi Kusaka, Koji Shimatani, Takayuki Tanaka
    Electronics, 14, 11, 2131, 2131, MDPI AG, 2025年05月23日, [査読有り], [招待有り], [最終著者]
    英語, 研究論文(学術雑誌), This paper proposes a wavelet-based spatiotemporal feature extraction method for recognizing uncertain shapes and their deformations. Uncertain shapes, such as hand gestures and fetal movements, exhibit individual and trial-dependent variations, making their accurate recognition challenging. Our approach constructs shape feature vectors by integrating wavelet coefficients across multiple scales, ensuring robustness to rotation and translation. By analyzing the temporal evolution of these features, we can detect and quantify deformations effectively. Experimental evaluations demonstrate that the proposed method accurately identifies shape differences and tracks deformations, outperforming conventional approaches such as template matching and neural networks in adaptability and generalization. We further validate its applicability in tasks such as hand gesture recognition and fetal movement analysis from ultrasound videos. These results suggest that the proposed wavelet-based spatiotemporal feature extraction technique provides a reliable and computationally efficient solution for recognizing and tracking uncertain shapes in dynamic environments.
  • A Motion Propagation Force Analysis of Multi-DoF Systems Using the Partial Lagrangian Method
    Hironori Gunji, Takashi Kusaka, Takayuki Tanaka
    Robotics, 14, 5, 54, 2025年04月24日, [査読有り], [最終著者]
    英語, 研究論文(学術雑誌), A partial Lagrangian method is proposed as an inverse dynamics analysis method for multi-link systems. This method, combined with automatic differentiation, allows for the derivation of equations of motion and analytical extraction of motion-induced torque components. We introduce the concept of motion propagation force to describe joint torque components generated by the motion of other joints. This concept aligns with existing notions such as interaction torque, while providing a novel analytical perspective. The effectiveness of the proposed method is confirmed through simulations using a three-DoF arm model, where motion propagation torques are visualized and validated. This method is useful for motion analysis and impedance control in complex robotic systems., 37208901
  • A Modification Method for Domain Shift in the Hidden Semi-Markov Model and Its Application
    Yunosuke Shimada, Takashi Kusaka, Takayuki Mukaeda, Yui Endo, Mitsunori Tada, Natsuki Miyata, Takayuki Tanaka
    Electronics, 14, 8, 1579, 2025年04月13日, [査読有り], [招待有り], [最終著者]
    英語, 研究論文(学術雑誌), In human behavior recognition using machine learning, model performance degrades when the training data and operational data follow different distributions which is a phenomenon known as domain shift. This study proposes a method for domain adaptation in the hidden semi-Markov model (HSMM) by modifying only the emission probability distributions. Assuming that the state transition probabilities remain unchanged, the method updates the emission probabilities based on the posterior distribution of the target domain. This approach enables domain adaptation with minimal computational cost without requiring model retraining. The effectiveness of the proposed method was evaluated on synthetic time-series data from different domains and actual care work data, achieving recognition performance comparable to that of models retrained for each domain. These findings suggest that the proposed method applies to various time-series data analysis tasks requiring domain adaptation.
  • Stabilization of Signal Decomposition Based on Frequency Entrainment Phenomena
    Keina Kitaura, Takashi Kusaka, Koji Shimatani, Takayuki Tanaka
    Electronics, 14, 6, 1163, 2025年03月16日, [査読有り], [招待有り], [最終著者]
    英語, 研究論文(学術雑誌), With advancements in the miniaturization and lightweight design of computers and electronic devices, wearable sensors are now widely utilized in fields such as healthcare and medicine. Signals obtained from wearable sensors often contain a mix of biological signals and noise. Typically, wearable sensor measurements focus on a single signal of interest (SoI), treating other signals as noise. While methods for separating multiple signals exist, the stable tracking of frequency variations during signal separation remains an unresolved challenge. Biological signal and human motion measurements often face issues such as noise, temporal disconnections, dropouts, and frequency variations. To address these challenges, we developed a method that can stably separate and extract SoI from measurement data. We demonstrated the effectiveness of the proposed method through simulations replicating common measurement issues. By applying the method, we show that SoI frequency estimates can be obtained with a high accuracy. Furthermore, we confirm that the method can separate multiple SoIs from a single measurement dataset, highlighting its utility. Finally, we validate that the proposed method can reliably extract multiple SoIs, such as heart rate, walking rhythm, and breathing rate, from actual data measured using stretch sensors, achieving results consistent with simulations.
  • Motion Tactics Model Combining Multiple Tactics to Represent Individual Differences in Human Running Motion
    Masaki Kitagawa, Takayuki Tanaka, Akihiko Murai, Takashi Kusaka
    Applied Sciences, 15, 6, 3221, 3221, MDPI AG, 2025年03月15日, [査読有り]
    英語, 研究論文(学術雑誌), Human running is a simple, periodic motion; however, the underlying mechanisms that generate this motion are complex, resulting in individual variations even when the same locomotion goal is pursued. Current generalized locomotion studies have not adequately explained these variations. To address this gap, we focus on the concept of motion strategy, which involves selecting different approaches to accomplish a task. Our objective is to develop a simulation that integrates these motion strategies. Achieving this requires both a deep understanding of the mechanisms behind human motion generation and the development of a system that can reproduce these mechanisms within a simulation. In this study, we propose a motion tactics model and develop a simulation system to replicate motions guided by these strategies. The simulation results were compared with experimental data to assess the effectiveness of the proposed model in replicating individual differences in motion. The model generated multiple motion states and showed it could select unique outcomes by combining different tactics, confirming its validity and feasibility. This approach demonstrated the potential for representing the characteristics in individual motion., 37208901
  • Partial Torque Tensor and Its Building Block Representation for Dynamics of Branching Structures Using Computational Graph
    Takashi Kusaka, Takayuki Tanaka
    Robotics, 14, 3, 31, 2025年03月10日, [査読有り], [最終著者], [国際誌]
    英語, 研究論文(学術雑誌), The Euler–Lagrange and Newton–Euler methods are typically used to derive equations of motion for serial-link manipulators. We previously proposed a partial Lagrangian method, which is similar to the Lagrangian method, for handling the equations of motion analytically. Moreover, the proposed method can efficiently handle multi-link analyses, similar to the Newton–Euler method. The partial Lagrangian method organizes the Lagrangian, which is obtained from the link structure, and torque, which is obtained by differential operations, into a table that can be easily handled by both manual calculations and computer analysis. Furthermore, by representing it using a computational graph, it is possible to perform dynamic analysis while maintaining the structure of a system. By observing the intermediate nodes of this computational graph, it is possible to observe how the torque generated at a particular link affects the joint. Organizing the structure with graphs allows us to consider complex systems as a collection of subgraphs, making this method highly compatible with our proposed partial Lagrangian approach. This study shows that the partial torque tensor can be used as an analog of the partial torque table for serial-link systems by interpreting the meaning of the table, i.e., the partial torque, as the interaction between the links in order to simplify the treatment of branching link systems. Due to the use of the partial torque tensor, the dimensions of the tensor correspond one-to-one with the number of branches, allowing the description of any branching system. Furthermore, by using the proposed building block representation, even complex branching systems can be easily designed and analyzed., 37208901
  • Torsion as a Mechanism for Enhancing Torso Mobility by Increasing Instantaneous Torque Transfer Ratio
    Shunsuke Nakamae, Takayuki Tanaka, Akihiko Murai, Takashi Kusaka
    Journal of Robotics and Mechatronics, 37, 1, 222, 230, 2025年02月20日, [査読有り]
    英語, 研究論文(学術雑誌), This study analyzed upper torso rotation, which is crucial for improving pitch velocity and minimizing upper limb load during pitching. A simplified model was developed to facilitate the analysis which focused on torso torsion. In this model, the instantaneous torque transfer ratio and torso mobility were defined as key indices. We experimentally verified how these indices vary under three conditions: no torsion, static torsion, and dynamic torsion. The results demonstrate that torso mobility increases in conjunction with the instantaneous torque transfer ratio. Both static and dynamic torsion conditions resulted in higher instantaneous torque transfer ratios compared to the no-torsion condition. In static torsion, the maximum torso mobility was, on average, 26% greater than that observed under no torsion. In dynamic torsion, the maximum torso mobility was, on average, 69% greater than that observed under no torsion. These results indicate that torsion is effective in increasing both the instantaneous torque transfer ratio and torso mobility and that this effect is stronger in dynamic torsion. Therefore, torsion increased the angular velocity of the upper torso in response to torque input from the lower limb, potentially resulting in higher ball velocity and a reduction in upper limb strain. Additionally, the findings imply that the input required from the lower limbs to achieve a specified pitch velocity may be reduced. The simplified model and indices proposed in this study provide a foundation for designing exercise intervention techniques, evaluating athletic performance, and assessing injury risk related to torso rotation., 37208901
  • Analysis of stiffness changes and factors induced by smart suit with trunk kinetic chain SLIP model
    Hiromu Mori, Takayuki Tanaka, Akihiko Murai, Takashi Kusaka, Yumeko Imamura
    ROBOMECH Journal, 12, 1, Springer Science and Business Media LLC, 2025年01月18日, [査読有り]
    英語, 研究論文(学術雑誌), We are currently developing a suit that assists human running motion based on the Smart Suit (SS). The SS is a wearable assistive device that intervenes in trunk kinetic chain movements by linking trunk rotation to hip flexion and extension through elastic belts. By intervening in the trunk kinetic chain, our goal is to enhance stiffness, thereby improving running economy and speed. The purpose of this study is to acquire fundamental insights into the changes in leg and trunk rotational stiffness induced by the SS, as well as the underlying mechanisms. We defined the SS torque intervention rate $$p_{ss}$$ , which focuses on the magnitude of force, and the peak time difference index, $$e_{lag}$$ , between SS and humans, which focuses on the timing of force, and analyzed the relationship between the stiffness change rate due to SS wearing. The results of the analysis suggest that SS affects human running sensitively rather than mechanically. We also confirmed that the degree of adaptation to SS, assessed by the timing gap between SS exertion and human exertion, contributes significantly to changes in trunk rotation stiffness., 37208901
  • Can Forward Dynamics Simulation with a Simple Model Represent Complex Rotations of the Torso with Torsion?
    Shunsuke Nakamae, Takayuki Tanaka, Akihiko Murai, Takashi Kusaka
    Proceedings of the 2024 IEEE International Conference on Robotics and Biomimetics, 675, 680, 2024年12月, [査読有り]
    英語, 研究論文(国際会議プロシーディングス), This study generates and analyzes human torso rotation and torsion unisng a simple model (TRM sim). As most injuries happen in the upper limb during pitching related to torso rotation and torsion, TRM sim is effective in baseball First, we designed TRM sim and generated the motion by forward dynamics. For validation, we measured three different human torso rotations with varying degrees of torsion. By aligning the peak values of input and their timings with human motions, TRM sim represented human motion, such as the relationship between torsion and the angular impulse of trunk muscle torque. These results suggest that TRM sim can represent torso rotation with different torsion levels. This study aims to generate torso rotations with various torsion to reduce upper limb load during pitching, with potential applications in designing intervention techniques., 37208901
  • ロバストな作業識別のための余事象動作分類と隠れセミマルコフモデルを用いた介護作業識別
    島田 悠之介, 迎田 隆幸, 日下 聖, 遠藤 維, 多田 充徳, 宮田 なつき, 田中 孝之
    計測自動制御学会論文集, 60, 12, 620, 630, The Society of Instrument and Control Engineers, 2024年12月, [査読有り], [最終著者]
    日本語, 研究論文(学術雑誌), In this paper, we propose a work description by elemental motion and a work identification method for creating detailed care records. This method describes tasks as a time-series of elemental motion and identifies care works. In order to achieve robust work identification against irregular motion and annotation of incorrect motion labels during a work, some elemental motion are integrated into one class as complementary event motion. Using the time-series data of elemental motion information, our proposed work identification method utilizing Hidden Semi-Markov Models can recognize performed care works based on the frequency distribution of state transitions. In the experiment, three simulated care works were measured and identified. In addition, simulations using artificial data were conducted to verify the robustness of the proposed method. Furthermore, we measured actual caregiving tasks at a nursing home to confirm whether the task detection was feasible. The results demonstrated the effectiveness of the proposed system.
  • Motor Imagery Training System based on the EquilibriumTrajectory Hypothesis
    Yuma Ito, Takayuki Tanaka, Takashi Kusaka
    Proceedings of JSME The 8th International Conference on Advanced Mechatronics (ICAM 2024), 2024年11月, [査読有り]
    英語, 研究論文(国際会議プロシーディングス), 37208901
  • Development of Augmented Jump SLIP model and Its Optimization based on Impulse Analysis
    Saizo Kamei, Takashi Kusaka, Taro Nakamura, Fumio Ito, Takashi Itsuno, Riku Takakuwa, Takayuki Tanaka
    Proceedings of JSME The 8th International Conference on Advanced Mechatronics (ICAM 2024), 2024年11月, [査読有り]
    英語, 研究論文(国際会議プロシーディングス), 37208901
  • HSMM based dairy cows behavior model capable of capturing changes due to food intake               
    Yuriya Ishikawa, Takashi Kusaka, Asahi Matsuda, Takayuki Mukaeda, Shiho Ishikawa, Ryotaro Inoguchi, Takayuki Tanaka
    Proceedings of JSME The 8th International Conference on Advanced Mechatronics (ICAM 2024), 2024年11月, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • An Image-based Measurement for Estimating Feed Intake inDaily Cows               
    Ryotaro Inoguchi, Asahi Matsuda, Takayuki Tanaka, Takashi Kusaka, Takayuki Mukaeda, Shiho Ishikawa, Yuriya Ishikawa
    Proceedings of JSME The 8th International Conference on Advanced Mechatronics (ICAM 2024), 2024年11月, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Pseudo-Normalization via Integer Fast Inverse Square Root and Its Application to Fast Computation without Division
    Takashi Kusaka, Takayuki Tanaka
    Electronics, 13, 15, 2955, 2955, MDPI AG, 2024年07月26日, [査読有り], [招待有り]
    英語, 研究論文(学術雑誌), Vector normalization is an important process in several algorithms. It is used in classical physical calculations, mathematical techniques, and machine learning, which has witnessed significant advancements in recent years. Normalization and regularization ensure the stability of solutions and play an important role in algorithm convergence. Normalization typically refers to the division of elements by their norm. Division should not be used in algorithmic implementations because its computational cost is considerably higher than that of multiply–add operations. Based on this, there is a well-known method referred to as the fast inverse square root (FISR) algorithm in floating-point calculations (IEEE754). In deeper-level embedded systems that require fast responses or power efficiency, integer instead of real number arithmetic (floating-point number arithmetic) should be used to increase speed. Conversely, in deeper-level embedded systems that require fast responses or power efficiency, integer arithmetic should be used instead of real number arithmetic (floating-point number arithmetic) to increase speed. Therefore, embedded engineers encounter problems in instances in which they use integer arithmetic for implementation, but real number arithmetic is required to compute vectors and other higher-dimensional algebra. There is no conventional normalization algorithm similar to the FISR algorithm for integer arithmetic; however, the proposed pseudo-normalization achieves vector normalization within a restricted domain using only multiply–add operations and bit shifts. This allows for fast and robust operations, even for low-performance MCUs that do not have power-efficient FPUs. As an example, this study demonstrates the computation of the arctangent (Arctan2 function; atan2(y, x)) with high precision using only integer multiply–add operations. In this study, we proposed a method of vector normalization using only integer arithmetic for embedded systems and confirmed its effectiveness by simulation using Verilog. The research results can contribute to various fields such as signal processing of IMU sensor data, faster artificial intelligence training, and efficient rendering of computer graphics.
  • 動力学シミュレーションに基づくねじりばねを用いた歩行アシスト装置のねじりばね定数の最適化
    亀井 佐以蔵, 土谷 圭央, 田中 孝之, 北川 雅基
    産業応用工学会論文誌, 12, 1, 92, 100, 2024年03月15日, [査読有り]
    日本語, 研究論文(学術雑誌)
  • パワーアシストシステムにおける操作対象物の操作方向を考慮した軌道上への誘導力場による手先誘導効果の検証
    松田潤樹, 田中孝之
    日本ロボット学会誌, 41, 9, 789, 796, The Robotics Society of Japan, 2023年11月, [査読有り]
    日本語, 研究論文(学術雑誌), This research aims to improve maneuverability for power assist system based on guidance force field. This paper describes a method of improving maneuverability using guidance force field of toward the desired trajectory considering approachability on the impedance-controlled manipulator. The approachability in this study means the direction where to approach target work piece. The guidance force field generated toward planned trajectory considering approachability based on Minimum-Jerk Model. It was designed to be easy to apply operator's mind, because the guidance force was designed to decrease when the difference between the desired trajectory and the end-effector position was increased using spreading parameter of guidance force field. Moreover, we defined evaluation function to evaluate maneuverability for guidance force field. As a result of study, we confirmed that the proposed method can improve maneuverability through experiments.
  • Reconstructive Approach for Detection and Analysis of Hemiplegia in Human Walking Motion Based on Musculoskeletal Model
    Daniel Tunmise Fatunmbi, Takayuki Tanaka
    2023 IEEE International Conference on Systems, Man, and Cybernetics (SMC), 2023年10月, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Fundamental Knowledge Acquisition by Using Wearable Sensor for “KEIROKA” of Construction Industry
    Yoshio TSUCHIYA, Yoshifumi TANAKA, Takayuki TANAKA
    IFAC-PapersOnLine, 56, 2, 9709, 9714, Elsevier BV, 2023年07月, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Musculoskeletal Model Capable of Reproducing Lumbar Extension Motion Strategy Based on the Equilibrium Point Hypothesis
    Masahiro Sato, Michihiro Yoshida, Takashi Kusaka, Yusuke Suzuki, Takayuki Tanaka
    Journal of Robotics and Mechatronics, 35, 3, 762, 770, Fuji Technology Press Ltd., 2023年06月20日, [査読有り], [責任著者]
    英語, 研究論文(学術雑誌), We considered the change in joint stiffness as a motion strategy in human lumbar extension movement. We developed a musculoskeletal model that can reproduce this motion strategy and attempted to clarify the individual characteristics and differences in motion strategy. This model reproduces changes in lumbar joint stiffness during movement by appropriately adjusting parameters such that they represent the motion strategy. Using this model, we identified parameters in lumbar extension exercises for six participants with differences in lumbar joint stiffness and examined changes in lumbar joint stiffness and motion strategies. The results showed that participants with similar changes in joint stiffness had commonalities in their motion strategies., 37208901
  • A Correction Method for Muscle Stiffness Sensors to Measure Transversus Abdominis Activity
    Shunsuke Nakamae, Takayuki Tanaka, Koji Shimatani
    Journal of Robotics and Mechatronics, 35, 3, 810, 822, Fuji Technology Press Ltd., 2023年06月20日, [査読有り]
    英語, 研究論文(学術雑誌), The transversus abdominis muscle is important for various human functions, including the prevention of back pain and the use of muscle activity values as an indicator for the treatment of urinary incontinence. Measuring muscle activity is an effective means of evaluating whether correct training has been performed. The transversus abdominis muscle stiffness sensor developed in a previous study used a method in which a belt with a sensor attached was wrapped around the lower back, which made measurement simple but also caused problems owing to the influence of phenomena other than muscle activity on the measurement data. Therefore, we propose a novel correction method to calculate the muscle activity of this sensor accurately, which can be used for simple measurements. We propose a formula to compensate for effects other than muscle activity based on a model equation that includes contact conditions and belt tension, which affect the muscle stiffness sensor value. We evaluated the validity of the correction equation from simulations and the change in similarity owing to the correction by simultaneously measuring the muscle action potentials and muscle stiffness sensor values during breathing movements with muscle activity. The proposed correction method improved the muscle stiffness data during respiration and contraction. It is possible to improve the measurement accuracy by improving the calibration method and hardware., 37208901
  • Optimizing the number of scan layers in multi-layered scanning methods for detecting void sizes in concrete building tiles using electromagnetic waves
    Hussain Alsalem, Takayuki Tanaka, Takumi Honda, Shigeru Uchida, Wakuto Ono
    2023 IEEE/SICE International Symposium on System Integration (SII), 1, 5, IEEE, 2023年01月17日, [査読有り]
    英語, 研究論文(国際会議プロシーディングス), Electromagnetic waves have proven to be efficient in detecting voids in concreted building tiles. However, obstacles, such as the difficulty of data analysis and the need to use relatively large equipment on-site, lead to increased costs. The multilayer survey method (MLS) provides a qualitative and fundamental solution to this dilemma. Because it is based on multiple scans, it still has the potential to improve the quantity and location of the required scanning layers, which will increase the accuracy and speed of the results. MLS was conducted on actual tiled concrete, which includes voids of several sizes. A comparison of the simulation and experimental results showed that there was a possibility of optimizing the number of scan layers. The ability to optimize scanning layers was demonstrated both theoretically and empirically.
  • Lumbar mechanical model capable of reproducing joint stiffness changes during lumbar extension motion
    Masahiro Sato, Takayuki Tanaka, Michihiro Yoshida, Yusuke Suzuki
    2023 IEEE/SICE International Symposium on System Integration (SII), 1, 6, IEEE, 2023年01月17日, [査読有り]
    英語, 研究論文(国際会議プロシーディングス), In this study, we developed a lumbar mechanical model that can reproduce the changes in joint stiffness during lumbar extension motion in humans. Earlier reports suggest that during lumbar extension motion joint stiffness varies from person to person. The individual differences in the way joint stiffness changes during lumbar extension motion are caused by individual differences in motion strategy, developed with reference to the equilibrium-point hypothesis, which is one of the clues to the elucidation of the human motor control law. We herein describe the development process of the model and examine the possibility of verifying individual differences in movement strategies by reproducing joint stiffness changes.
  • Measurement of the Void Size Between Wall Tiles and Concrete Through Nondestructive Inspection Using Electromagnetic Waves
    Hussain Alsalem, Takayuki Tanaka, Takumi Honda, Satoru Doi, Shigeru Uchida, Wakuto Ono
    IEEJ Transactions on Electrical and Electronic Engineering, Wiley, 2022年12月30日, [査読有り]
    英語, 研究論文(学術雑誌), The separation of tiles from buildings degrades the aesthetic appeal of buildings and may result in structural failure. Therefore, tiles should be inspected periodically. However, manual inspections are expensive and require qualified experts. In this study, voids corresponding to tile separation were detected in a concrete specimen using nondestructive inspection based on electromagnetic wave detection. Furthermore, wave reflection models of healthy and defective tiles were created, and the effects of the void plane size on the reflection of defective tiles were considered. The correlation between the void plane size and the reflection intensity difference integral value was verified through multilayer scanning using these models.
  • Partial Lagrangian for Efficient Extension and Reconstruction of Multi-DoF Systems and Efficient Analysis Using Automatic Differentiation
    Takashi Kusaka, Takayuki Tanaka
    Robotics, 11, 6, 149, 149, MDPI AG, 2022年12月09日, [査読有り], [最終著者]
    英語, 研究論文(学術雑誌), In the fields of control engineering and robotics, either the Lagrange or Newton–Euler method is generally used to analyze and design systems using equations of motion. Although the Lagrange method can obtain analytical solutions, it is difficult to handle in multi-degree-of-freedom systems because the computational complexity increases explosively as the number of degrees of freedom increases. Conversely, the Newton–Euler method requires less computation even for multi-degree-of-freedom systems, but it cannot obtain an analytical solution. Therefore, we propose a partial Lagrange method that can handle the Lagrange equation efficiently even for multi-degree-of-freedom systems by using a divide-and-conquer approach. The proposed method can easily handle system extensions and system reconstructions, such as changes to intermediate links, for multi-degree-of-freedom serial link manipulators. In addition, the proposed method facilitates the derivation of the equations of motion-by-hand calculations, and when combined with an analysis algorithm using automatic differentiation, it can easily realize motion analysis and control the simulation of multi-degree-of-freedom models. Using multiple pendulums as examples, we confirm the effectiveness of system expansion and system reconstruction with the partial Lagrangians. The derivation of their equations of motion and the results of motion analysis by simulation and motion control experiments are presented. The system extensions and reconstructions proposed herein can be used simultaneously with conventional analytical methods, allowing manual derivations of equations of motion and numerical computer simulations to be performed more efficiently.
  • ウェアラブル・エンベデッドセンサを用いた作業姿勢分類と作業検知への応用
    迎田 隆幸, 島田 悠之介, 田中 孝之, 野口 宏明, 阿部 敏久
    計測自動制御学会論文集, 58, 12, 558, 567, The Society of Instrument and Control Engineers, 2022年12月, [査読有り]
    日本語, 研究論文(学術雑誌), To evaluate the work contents of a care worker, this paper proposes a novel lower limb posture estimation method, and a motion recognition method for the automation of care records. In our approach, wearable-embedded sensors consisting of inertial sensors and insole-type plantar pressure sensors were used to recognize the posture of the whole body during care tasks. The upper body posture was calculated from triaxial accelerations, and posture classification of lower limbs can be reached with characteristics extracted from plantar pressure distribution. To achieve accurate posture recognition considering unexpected posture in training phase and compound postures combining multiple postures, a new posture estimation method combining normal and complementary Gaussian mixture network (NACGMN) and posture-fitness function was developed. Using the time-series data of posture information, our proposed work estimation manner utilizing hidden semi-Markov models can recognize performed care works based on the frequency distribution of state transitions. In experiments, we measured and recognized transfer assistance works between a bed and a wheelchair in our laboratory and an actual care facility, and the results demonstrated the effectiveness of the proposed system.
  • Stateful Rotor for Continuity of Quaternion and Fast Sensor Fusion Algorithm Using 9-Axis Sensors
    Takashi Kusaka, Takayuki Tanaka
    Sensors, 22, 20, 7989, 7989, MDPI AG, 2022年10月19日, [査読有り], [最終著者]
    英語, 研究論文(学術雑誌), Advances in micro-electro-mechanical systems technology have led to the emergence of compact attitude measurement sensor products that integrate acceleration, magnetometer, and gyroscope sensors on a single chip, making them important devices in the field of three-dimensional (3D) attitude measurement for unmanned aerial vehicles, smartphones, and other devices. Sensor fusion algorithms for posture measurement have become an indispensable technology in cutting-edge research, such as human posture measurement using wearable sensors, and stabilization problems in robot position and posture measurement. We have also developed wearable sensors and powered suits in our previous research. We needed a technology for the real-time measurement of a 3D human body motion. It is known that quaternions can be used to algebraically handle 3D rotations; however, sensor fusion algorithms for three sensors are presently complex. This is because these algorithms deal with the post-rotation attitude (pure quaternions) rather than rotation information (the rotor) to avoid a double covering problem involving the rotor. If we are dealing with rotation, it may be possible to make the algorithm simpler and faster by dealing directly with the rotor. In this study, to solve the double covering problem involving the rotor, we propose a stateful rotor and develop a technique for uniquely determining the time-varying states of the rotor. The proposed stateful rotor guarantees the continuity of the rotor parameters with respect to angular changes, and this paper confirms its effectiveness by simulating two rotations around an arbitrary axis. In addition, we verify experimentally that a fast sensor fusion method using stateful rotor can be used for attitude calculation. Experiments also confirm that the calculated results converge to the desired rotation angle for two spatial rotations around an arbitrary axis. Since the proposed stateful rotor extends and stabilizes the definition of the rotor, it is applicable to any algorithm that deals with time-varying quaternionic rotors. In this research, an algorithm based on a multiply–add operation is designed to reduce computational complexity as a high-speed calculation for embedded systems. This method is theoretically equivalent to other methods, while contributing to power saving and the cost reduction of products.
  • Construction of a Simulator to Reproduce Changes in Running due to Motion Strategies Using Spring-Loaded Inverted Pendulum Model
    Masaki Kitagawa, Takayuki Tanaka, Akihiko Murai
    2022 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2022), 5249, 5256, 2022年10月, [査読有り]
    英語, 研究論文(国際会議プロシーディングス), This study aims to construct a running simulator based on a motion generation and control system that enables the description of motion strategies using the spring-loaded
    inverted pendulum (SLIP) model. The problems of stability and robustness encountered in the running simulation with the SLIP model are elucidated, and stable running is achieved by controlling the stiffness and the attitude angle dynamically at touchdown, as well as human energy adjustment that is introduced to consider the active motion strategy. As a result, passive and active control by humans can be expressed, and a framework that can express the changes in running due to motion strategies is constructed. Finally, we discuss the possibility of describing and elucidating the motion strategies., 37208901
  • 残存機能を活用した立ち座り動作支援機器における適正アシスト力の選定と評価
    三上 隼人, 土谷 圭央, 田中 孝之, 和田 親宗
    産業応用工学会論文誌, 10, 2, 82, 89, 一般社団法人 産業応用工学会, 2022年09月, [査読有り]
    日本語, Supporting the elderly by utilizing their remaining functions will lead to the extension of their healthy life span. In this study, we developed a portable cane-type standing and sitting positional mobility support device. In this study, we developed a cane-type mobility support device, and selected a suitable support direction for elderly people by dynamic analysis simulation. In addition, the necessary assisting force for the elderly was examined and the assisting force was set. The effectiveness of the device was evaluated by measuring the surface electromyogram of healthy subjects. As a result, it was found that the specifications of this device were effective when the assist direction was 30 degrees and the assist force was 110 N. From the measurement of the surface electromyogram, it was found that the device was effective for both standing and sitting motions. It also helps to ensure the safety of the sitting motion of elderly people.
  • 論理和型および信頼区間型の探索領域拡張による複数関心パタンの順序探索
    浅野 裕一, 高氏 秀則, 田中 孝之, 金子 俊一
    電気学会論文誌C, 142, 8, 971, 981, 電気学会, 2022年08月01日, [査読有り], [国内誌]
    日本語, 研究論文(学術雑誌), Two novel strategies for incremental searching of interest patterns are proposed in context of sequential search of multiple patterns in the scene. One is based on a scheme based on union operation to extend search regions depending on all of the proceeding searches, which can possibly adapt the search to some local distortion in the scene or the objects. Another strategy utilizes incremental setting of confidence intervals to the search regions depending on their statistics in position errors of respective patterns. In addition to them, a new scheme of repetitive trials for realizing reliability in the search. By using a set of real objects, many experiments show the effectivity and the efficiency of the proposed strategies.
  • Fast and Accurate Approximation Methods for Trigonometric and Arctangent Calculations for Low-Performance Computers
    Takashi Kusaka, Takayuki Tanaka
    Electronics, 11, 15, 2285, 2285, MDPI AG, 2022年07月22日, [査読有り], [最終著者]
    英語, 研究論文(学術雑誌), In modern computers, complicated signal processing is highly optimized with the use of compilers and high-speed processing using floating-point units (FPUs); therefore, programmers have little opportunity to care about each process. However, a highly accurate approximation can be processed in a small number of computation cycles, which may be useful when embedded in a field-programmable gate array (FPGA) or micro controller unit (MCU), or when performing many large-scale operations on a graphics processing unit (GPU). It is necessary to devise algorithms to obtain the desired calculated values without an accelerator or compiler assistance. The residual correction method (RCM) developed here can produce simple and accurate approximations of certain nonlinear functions with minimal multiply–add operations. In this study, we designed an algorithm for the approximate computation of trigonometric and inverse trigonometric functions, which are nonlinear elementary functions, to achieve their fast and accurate computation. A fast first approximation and a more accurate second approximation of each function were created using RCM with a less than 0.001 error using multiply–add operations only. This achievement is particularly useful for MCUs, which have a low power consumption but limited computational power, and the proposed approximations are candidate algorithms that can be used to stabilize the attitude control of robots and drones, which require real-time processing.
  • Modeling of changes in lumbar joint stiffness by pelvic tightening based on physique and pelvic alignment
    Michihiro Yoshida, Tanaka Takayuki, Yoshio Tsuchiya
    Physical Ergonomics and Human Factors, 205, 213, AHFE International, 2022年07月, [査読有り]
    英語, 研究論文(国際会議プロシーディングス), We have been elucidated the mechanism by which pelvic belt reduces lumbar burden. Pelvic tightening increases the lumbar joint stiffness and inhibits the flexion of the lumbar spine in the forward bending. Flexion of the lumbar joint is substituted by the hip joint, which corrects the posture during forward bending and reduces the lumbar burden (lumbar joint torque). The level of the assisting effect of the tightening force has the individual difference, but at present, it is not clear what factors cause it. In this study, we develop a model that represents the assistance effect based on the physique such as height and weight, and the posture and shape of the pelvis and lumbar spine (pelvic alignment).This study developed a regression model that expresses the amount of change in joint stiffness due to tightening force, using the individual physique and pelvic alignment characteristics as input. The joint stiffness was estimated from motion measurement using optical motion capture and obtained from the equation of motion of the link model representing the human body. Pelvic alignment was measured by X-ray images, and five features were obtained: sacral inclination angle (SS angle), pelvic inclination angle (PT angle), inclination angle of the sacrum relative to the pelvis (PI angle), curvature of the lumbar lordosis, and pelvic aperture angle. Among these, the SS angle, PT angle, and PI angle were measured under two conditions: standing and 45 degrees forward bending and obtained a total of eight pelvic alignment features. In addition, height, weight, BMI, and back muscle strength were added as physique characteristics expressing body size and muscle strength, for a total of 12 variable measured. These features were measured on 15 subjects. Among the 12 features, three to four variables were input to the model by excluding those that were strongly correlated with each other and less capable of explaining changes in the target value, joint stiffness.From the proposed model, changes in joint stiffness could be estimated from pelvic alignment and physique characteristics. At large forward bending angles, we found that to obtain a high assistance effect, tilting of the sacrum anteriorly relative to the pelvis and forward tilting of pelvis is necessary. On the other hand, in the mild forward bending, the person who is higher body weight in addition to the forward tilt of the PT and PI angles tend to obtain higher assistive effect.
  • A Proposal of Individualization of Guidance Force Field to Improve Maneuverability of Power Assist Systems
    Junki Matsuda, Takayuki Tanaka
    2022 IEEE/ASME International Conference on Advanced Intelligent Mechatronics, 1231, 1236, 2022年07月, [査読有り]
    英語, 研究論文(国際会議プロシーディングス), This study aims to improve the maneuverability of power assist systems based on guidance force field. We have proposed an artificial potential method to generate a guidance force field on an arbitrary work trajectory to guide the operator and manipulator to reduce the workload of the operator when using a position-controllable industrial manipulator as a PAS. Experiments showed that the proposed guidance force field contributed to a reduction in the workload of the operator. Individual differences were observed in the maneuverability of the operator under the guidance force field. In this paper, we propose a mathematical model of the maneuverability of the guidance force field and a method to obtain the optimum spread of the guidance force field for each operator.
  • Modeling Joint Stiffness Change by Pelvic Tightening Based on Pelvic Alignment
    Michihiro Yoshida, Takayuki Tanaka, Yoshio Tsuchiya
    Biomechanics, 2, 2, 264, 280, {MDPI} {AG}, 2022年05月22日, [査読有り]
    英語, 研究論文(学術雑誌), This paper aims to develop a regression model that explains the relationship between changes in lumbar joint stiffness and pelvic alignment (posture or shape of the bones of the pelvis and lumbar spine) due to pelvic tightening. The proposed model is based on the hypothesis that lumbar joint stiffness increases with changes in pelvic alignment. The proposed model is based on experimentally measured stiffness values and pelvic alignment data sets. The stiffness of the lumbar joint was estimated by motion analysis using a motion-capture system. Ninety-six volunteers participated in the experiment to estimate stiffness values, and the validity of using lumbar joint stiffness as the output of the model was examined. The pelvic alignment was measured through X-ray images. Pelvic alignment was measured using radiographic images, and 25 volunteers participated. The Results section states that the amount of change in the posture of the sacrum relative to the pelvis and the curvature of the lumbar spine contributes to the change in lumbar joint stiffness. Future work will include FEM analysis to validate the overall hypothesis and the validity of applying the model to a group other than those who participated in the development of the model.
  • アクティブコルセットの可変締付力制御則の個人適合による腰部負担軽減効果の向上と腰部関節剛性への影響
    吉田道拓, 田中孝之, 土谷圭央, 金子勇斗
    計測自動制御学会論文集, 57, 12, 2021年12月, [査読有り]
    日本語, 研究論文(学術雑誌)
  • A Proposal of Diagnostic System for Assistance Effect of Pelvic Belt Based on CoP Measurement
    Michihiro Yoshida, Takayuki Tanaka, Yoshio Tsuchiya
    2021 IEEE 30th International Symposium on Industrial Electronics (ISIE), 1, 5, IEEE, 2021年06月20日, [査読有り]
    英語, 研究論文(国際会議プロシーディングス), This study aims to develop a diagnostic system that estimates the assistance effect of pelvic tightening in advance for the introduction of the pelvic belt to the field of work or clinical use. This study explains the hypothesis of lumbar burden reduction by pelvic belt and shows that pelvic tightening reduces lumbar joint flexion. The posture correction degree is proportional to the amount of reduction in the lumbar burden. By conducting a motion measurement, the posture correction index indicates the assistance effect. From the measurement using motion capture and force platform for 86 people, we developed a mathematical model that estimates the posture correction index from CoP change.
  • Modeling and Simulation of Running Expansion with Trunk and Pelvic Rotation Assist Suit
    Hongyuan Ren, Takayuki Tanaka, Akihiko Murai
    2021 IEEE International Conference on Robotics and Automation (ICRA), 1263, 1268, IEEE, 2021年05月30日, [査読有り]
    英語, 研究論文(国際会議プロシーディングス), Human running motion is a complex motion that not only based on the movement of legs but also needs the entire body to participate in. Therefore, we focused on the upper body, designed a trunk and pelvic rotation assist suit to apply an external force on the chest and pelvis for assisting the running motion, changing the energy flow between the upper and lower body to improve the running efficiency. However, human motion is very complicated and difficult to analyze, it is hard to explore the specific effect of the external force which is provided by the rotation assist suit on human motion. In this paper, we proposed an advanced spring-loaded inverted pendulum model for simulating the human running motion in natural running status and expanded running status in which the motion is expanded by wearing the trunk and pelvic rotation assist suit, parametrically represent the changes of human due to the intervention of the external force, and discuss the effect of the external assistant force on the human running motion.
  • 近海かつお一本釣漁業の漁獲物搬出作業における軽労化支援スーツの効果
    髙橋 秀行, 安田 健二, 田中 孝之
    日本水産工学会誌, 57, 3, 83, 89, 2021年02月, [査読有り]
    日本語, 研究論文(学術雑誌), The main function of work assistive suits is to reduce the burden on the muscles around the waist during stooping, thought to be the one of the causes of low back pain. Since fishermen frequently stoop, the introduction of work assistive suits is highly anticipated. In this study, the effect of a work assistive suit on the fish unloading task in a skipjack tuna pole and line fishing boat on offshore waters was experimentally investigated. A prototype work assistive suit, using carbon fiber-reinforced plastic plates as the elastic body of the suit, was manufactured and provided for the experiment. We measured the activity of the elector spine of four subjects using surface electromyography. The results showed that the muscle activities of the elector spine adjacent to the fourth lumbar vertebrate were significantly reduced in two subjects (the other two did not have successful experiments) and the rate of reduction ranged from 11% to 25%. The muscle activity in the elector spine adjacent to the first lumbar vertebrate was slightly increased in a subject, however, no significant changes were seen in other three subjects. It is expected that the work assistive suit considering actual work of fishermen is developed and disseminated.
  • Pose Identification for Task Recognition in Care Work
    Shinnosuke Kato, Mihoko Niitsuma, Takayuki Tanaka
    2021 IEEE/SICE International Symposium on System Integration (SII), 315, 319, IEEE, 2021年01月11日, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Hierarchical probabilistic task recognition based on spatial memory for care support
    Tappei Katsunaga, Takayuki Tanaka, Mihoko Niitsuma, Saburo Takahashi, Toshihisa Abe
    2021 IEEE/SICE International Symposium on System Integration (SII), 310, 314, IEEE, 2021年01月11日, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • The Effect of Passive Lower Limb Assist Device on Muscle Synergy in Standing-Up Motion
    Shunsuke Torigai, Takayuki Tanaka
    2021 IEEE/SICE International Symposium on System Integration (SII), 566, 571, IEEE, 2021年01月11日, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Subjective evaluation of lumbar load and tightening force using a pelvic belt
    Yoshio Tsuchiya, Takayuki Tanaka, Michihiro Yoshida
    2021 IEEE/SICE International Symposium on System Integration (SII), 2020, 0, 548, 553, 一般社団法人 日本機械学会, 2021年01月11日, [査読有り]
    英語, 研究論文(国際会議プロシーディングス),

    Lumbar load, which causes chronic low back pain, varies depending on posture and external load. However, the timing to feel the lumbar burden varies from person to person. It is also known that tightening the pelvic belt against the lumbar burden improves posture and reduces the lumbar burden. For this reason, the tightening force of the pelvic belt is measured for the posture and the lumbar load, and the relationship between the sensation and the load is evaluated.

  • 超人スポーツ・グランドチャレンジ 2020
    持丸 正明, 村井 昭彦, 田中 孝之, 栗田 雄一, 南澤 孝太, 稲見 昌彦
    バイオメカニズム学会誌, 45, 2, 80, 83, バイオメカニズム学会, 2021年
    日本語, 超人スポーツとは,人間の身体能力を補綴・拡張する人間拡張工学に基づき,人の身体能力を超える力を身につけ「人を超える」,あるいは年齢や障碍などの身体差により生じる「人と人のバリアを超える」ことによって生み出される新しいスポーツ競技である.拡張された超人同士がテクノロジーを自在に乗りこなし,競い合う「人機一体」の新たなスポーツを創造することを目指している.さらなる「人機一体」の技術の開発に向け,競技者同士が同一の技術(道具)を用い,その使いこなし方や身体能力,戦略で競い合う超人スポーツ競技ではなく,最先端の人間拡張工学と身体能力を競技者同士が自在に開発,適用して,独自技術と身体能力で競い合い,記録に挑戦するかたちの競技を新たに創り出すという目的で,3 つのグランドチャレンジを設定し,2020 年度の第 1 回グランドチャレンジを実施した.
  • Measuring Adhesion Strength of Wall Tile to Concrete by Non-Contact Inspection Using Electromagnetic Waves
    Hussain Alsalem, Takayuki Tanaka, Takumi Honda, Satoru Doi, Shigeru Uchida
    Proceedings of the 37th International Symposium on Automation and Robotics in Construction (ISARC), 633, 638, International Association for Automation and Robotics in Construction (IAARC), 2020年10月14日, [査読有り]
    英語, 研究論文(国際会議プロシーディングス), The separation of exterior tiles from buildings diminishes the visual appeal of cities and can injure pedestrians when they are struck by falling tiles. Therefore, tiles should be inspected periodically. However, completion of the inspection process has hurdles, including high cost and the need for qualified human inspectors. This study describes a non-destructive inspection method for detecting voids that match those seen in tile separation in a concrete specimen using electromagnetic waves, specifically microwaves. The method can be performed using devices that are simpler, smaller, and easier to use than those required by conventional methods. In addition, this method can be used to measure the adhesion strength of tiles.
  • Analysis of Running Expansion with Trunk and Pelvic Rotation Assist Suit by Using SLIP Model
    Hongyuan Ren, Takayuki Tanaka, Kotaro Hashimoto, Akihiko Murai
    ROMANSY 23 - Robot Design, Dynamics and Control, 458, 466, Springer International Publishing, 2020年09月, [査読有り]
    研究論文(国際会議プロシーディングス), In this paper, we evaluated the effect of the trunk and pelvic rotation assist suit in assisting human running motion. During running motion, when the angular momentum of the upper body and the lower body is closer to balance, the running efficiency will be improved. According to this fact, we developed the trunk and pelvic rotation assist suit to apply external forces in the upper body to balance the angular momentum and improve the running efficiency. To evaluate the assist efficiency of our assist suit, we used the spring-loaded inverted pendulum model (SLIP model) and conducted a running expansion experiment. We combined the results of SLIP model and experimental data to evaluate the effect of the assist suit by comparing the energy and athletic performance between natural and expanded running motion. Finally, we confirmed the trunk and pelvic rotation assist suit does have an assisting effect on the human running motion.
  • Relationship between Upper Body Posture Angle and Vertebral Body Posture Angle in Lateral Flexion and Rotation Posture
    Yoshio TSUCHIYA, Takayuki TANAKA, Tamotsu KAMISHIMA
    Advanced Biomedical Engineering, 9, 181, 188, Japanese Society for Medical and Biological Engineering, 2020年09月, [査読有り]
    英語, 研究論文(大学,研究機関等紀要), Lumbar loading causes increased intervertebral pressure and is an important factor in low back pain. However, it is difficult to quantitatively judge the actions that affect lumbar load and the magnitude of lumbar load increase. Low back pain occurs not only in the workplace but also during activities of daily living. Therefore, it is necessary to investigate the factors inducing low back pain by measuring movements in various planes and determining the magnitude of the lumbar load. Accordingly, the lumbar spine should be examined during various movements. Several studies have examined vertebral bodies in the anteflexion posture. However, the relationship between body flexion angle and vertebral body angle during lateral flexion and rotation remains unknown. In this study, we proposed an estimation method for changes in vertebral body angle during lateral flexion and rotation in the lumbosacral region using a wearable sensor system we previously developed. The accuracy of the proposed estimation method was evaluated and demonstrated using X-ray images.
  • Modeling the Joint Stiffness Change by Pelvic Tightening Based on Alignment of Lumbar and Pelvis
    Michihiro Yoshida, Takayuki Tanaka, Yoshio Tsuchiya, Yuto Kaneko
    Advances in Intelligent Systems and Computing, 168, 176, Springer International Publishing, 2020年07月, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • 個人適合した筋骨格モデルを用いた骨盤底筋強化のための最適姿勢導出
    若生知宏, 田中孝之, 島谷康司, 栗田雄一, 杉山好美
    バイオメカニズム, 25, 113, 124, 2020年07月, [査読有り], [国内誌]
    日本語, 研究論文(学術雑誌), 腹圧性尿失禁は女性の典型的なQuality of Life(QOL)疾患で,咳やくしゃみをした際に腹圧が上昇することで予期しない尿漏れが生じるものである.主に肥満や加齢,出産による骨盤底筋(PFM)の弛緩や損傷が原因とされており,予防するためにはPFM強化が有効とされている.既存のトレーニング方法として,Kegel体操などが提案されているが,トレーニング効果に個人差が存在するなどの問題がある.これを解決するために本研究では日常生活でとり得る11姿勢を定義し,個人適合した筋骨格モデルを用いて各姿勢のPFM活動量計算を行うことで,各個人に適したトレーニング姿勢を導出する方法を提案した.また各姿勢におけるPFM活動量の実測値と比較することで提案手法の評価を行った結果,6名中3名の被験者で計算結果との正の相関が確認され,本手法の妥当性が示唆された., 27113973
  • Visualization of Voids in Tile Concrete by Non-contact Inspection using Electromagnetic Waves               
    Takumi Honda, Takayuki Tanaka, Satoru Doi, Shigeru Uchida
    The International Workshop on Frontiers of Computer Vision 2020, 2020年02月, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Development of an anomaly detection method with a novel hidden semi-Markov model incorporating unlearned states.
    Takayuki Mukaeda, Keisuke Shima, Saori Miyajima, Yuki Hashimoto, Takayuki Tanaka, Naomichi Tani, Hiroyuki Izumi
    2020 IEEE/SICE International Symposium on System Integration(SII), 1270, 1275, IEEE, 2020年, [査読有り]
    研究論文(国際会議プロシーディングス)
  • Task recognition based on task history considering estimation error of localization in care support with autonomous mobile wheelchairs.
    Tappei Katsunaga, Takayuki Tanaka, Mihoko Niitsuma, Saburo Takahashi, Toshihisa Abe
    2020 IEEE/SICE International Symposium on System Integration(SII), 1265, 1269, IEEE, 2020年, [査読有り]
    研究論文(国際会議プロシーディングス)
  • Task Activity Recognition and Workspace Extraction for Nursing Care Assistance in Intelligent Space.
    Kouji Sakotani, Shinnosuke Kato, Mihoko Niitsuma, Takayuki Tanaka
    2020 IEEE/SICE International Symposium on System Integration (SII), 1259, 1264, IEEE, 2020年, [査読有り]
    研究論文(国際会議プロシーディングス)
  • Visualization of Voids Between Tile and Concrete by Multi-Layered Scanning Method with Electromagnetic Waves
    Takumi Honda, Takayuki Tanaka, Satoru Doi, Shigeru Uchida, Maria Q. Feng
    Journal of Robotics and Mechatronics, 31, 6, 863, 870, 2019年12月, [査読有り]
    英語, 研究論文(学術雑誌), The tiles that are used to protect the exterior of a building may separate from the concrete substrate and fall off as they age. To prevent accidents, a tiled wall can be inspected using various methods. In this study, nondestructive inspection (NDI) with microwave electromagnetic waves (EMWs) is used for detecting tile separation, and the chance of detecting the separation by this method is discussed in this paper. Here, the inspection apparatus is used to detect voids in concrete, including voids that simulate tile separation. An antenna attached to the apparatus transmits and receives microwaves to obtain a reflected intensity from the concrete. In addition, the distribution of reflected intensity is obtained using a proposed scanning method, multi-layered scanning. This involves several scans along the concrete surface at different antenna-to-surface distances. Typically, EMWs have to be analyzed with an expensive network analyzer in the time or frequency domain. However, we demonstrate that voids are detected from the obtained distribution of the reflected intensity of EMWs measured by a simple device without a network analyzer. The proposed method of NDI with EMWs is cheaper and simpler than conventional inspection methods.
  • Relationships between Quantitative and Subjective Evaluations of Assistive Effect on Standing Function of the Smart Suit               
    Hijiri Hiraishi, Takayuki Tanaka, Mami Sakata, Dai Kawahara, Keisuke Shima
    The Fourth International Conference on Informatics and Assistive Technologies for Health-Care, Medical Support and Wellbeing, 2019年11月, [査読有り], [責任著者]
    英語, 研究論文(国際会議プロシーディングス)
  • Minimal Inertial Sensor Placement for Work Recognition and Working Posture Assessment*
    Saori Miyajima, Yuki Hashimoto, Takayuki Tanaka, Natsuki Miyata, Mitsunori Tada, Masaaki Mochimaru
    2019 IEEE/SICE International Symposium on System Integration (SII), IEEE, 2019年01月, [査読有り]
    研究論文(国際会議プロシーディングス)
  • Biofeedback for Training Pelvic Floor Muscles with EMG Signals of Synergistic Muscles
    Hikaru Hasegawa, Takayuki Tanaka, Tomohiro Wakaiki, Koji Shimatani, Yuichi Kurita
    Advances in Intelligent Systems and Computing, 789, 403, 410, 2019年, [査読有り]
    研究論文(国際会議プロシーディングス)
  • アクティブコルセットの動的締付力が関節剛性と腰部補助効果に及ぼす影響
    吉田 道拓, 田中 孝之, 金子 勇斗, 土谷 圭央
    計測自動制御学会論文集, 55, 11, 683, 691, 公益社団法人 計測自動制御学会, 2019年, [査読有り]
    日本語, 研究論文(学術雑誌),

    In this paper, we experimentally verify the relationship between the change in the stiffness of joints around the lumbar due to dynamic tightening control of the Active Corset and the reduction of the lumbar load. The bending angle of joints around the lumbar in lifting movement were measured, and the elasticity of the joints were calculated. As the result of the measurement on 21 subjects, tightening of Active Corset reduced the lumbar load with substituting the lumbar joint flexion by the hip joint flexion in all subjects. In addition, the we confirmed that the ratio of the lumbar elasticity to the hip joint elasticity increase with tightening around the pelvis on the four subjects. We conclude that the decrease of the lumbar load with tightening caused by increasing the ratio of the lumbar joint elasticity to the hip joint elasticity.

  • Walking Assistance and Resistance of Walking Motion by Trunk and Pelvis Motion Assist
    Kotaro Hashimoto, Takayuki Tanaka, Takashi Kusaka
    2018 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), IEEE, 2018年10月, [査読有り]
    研究論文(国際会議プロシーディングス)
  • Reducing Lumbar Load with Active Corset
    Michihiro Yoshida, Takayuki Tanaka, Yoshio Tsuchiya, Takashi Kusaka
    Journal of Robotics and Mechatronics, 30, 5, 740, 751, 2018年10月, [査読有り]
    英語, 研究論文(学術雑誌), This study describes the effect of Active Corset on the lumbar spine. Active Corset is assist tools used to prevent low back pain. It tightens the waist optimally according to the lumbar load during work. This study aimed to clarify the mechanical effect of tightening of the pelvis on lumbar joints and determine the mechanism leading to reduction of the lumbar load. Moreover, this study examined the phenomena commonly occurring among the subjects with reduced lumbar load by tightening of the pelvis. First, we will present some examples of currently used assist tools and demine the utility of the Active Corset among the various tools used. Next, the mechanism of the Active Corset will be described. Further, we will present a hypothesis about reducing the lumbar load by tightening the pelvis. After describing the change in the joint bending angle on tightening, we will describe reduction of burden from the antigravity torque around the lumbar joint. Finally, we will compare active tightening using Active Corset with tightening using a constant force and describe the advantage of active tightening.
  • Estimating Lumbar Load During Motion with an Unknown External Load Based on Back Muscle Activity Measured with a Muscle Stiffness Sensor
    Yoshio Tsuchiya, Yumeko Imamura, Takayuki Tanaka, Takashi Kusaka
    Journal of Robotics and Mechatronics, 30, 5, 696, 705, 2018年10月, [査読有り]
    英語, 研究論文(学術雑誌), A forward bending motion is essential in everyday tasks, such as carrying objects, shoveling snow, and performing farm work. However, many people suffer from lumbar pain resulting from forward bending motion, which causes a lumbar disc load owing to the changing of the lumbar shape. We have developed a wearable lumbar load estimation system, which measures the skin shape on the back using a curvature sensor. Because the lumbar load varies with the external load, the lumbar load should be estimated based on the external load. Therefore, we have developed a method for estimating an unknown external force using a muscle stiffness sensor. Muscle strength can be estimated by measuring the muscle hardness from the surface, and the relationship between the external force and the muscle force can be modeled. Using this method, we estimate the dependence of the lumbar load on external forces in real time. In addition, we simplify the calculation by converting the external load into a load resulting from a person’s own weight. We incorporate the proposed method into our wearable sensor system, estimate the lumbar load, and compare this with the results of a musculoskeletal dynamics simulation.
  • Evaluation framework for passive assistive device based on humanoid experiments
    Yumeko Imamura, Ko Ayusawa, Eiichi Yoshida, Takayuki Tanaka
    International Journal of Humanoid Robotics, 15, 3, World Scientific Publishing Co. Pte Ltd, 2018年06月01日, [査読有り]
    英語, 研究論文(学術雑誌)
  • Design of a simple three-dimensional musculoskeletal model for a wearable sensor system, and optimization of link joint position using finite element analysis
    Haruma Akimoto, Yoshio Tsutiya, Yumeko Imamura, Takashi Kusaka, Takayuki Tanaka
    2017 IEEE Life Sciences Conference, LSC 2017, 2018-, LSC, 234, 237, Institute of Electrical and Electronics Engineers Inc., 2018年01月23日, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Estimation of the optimal spread of a guidance force field for a power assist system
    Junki Matsuda, Takayuki Tanaka, Takashi Kusaka
    Proceedings - 2017 IEEE 5th International Symposium on Robotics and Intelligent Sensors, IRIS 2017, 2018-, IRIS, 249, 254, Institute of Electrical and Electronics Engineers Inc., 2018年01月08日, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Wearable sensor system for lumbosacral load estimation by considering the effect of external load
    Yoshio Tsuchiya, Takashi Kusaka, Takayuki Tanaka, Yoshikazu Matsuo
    Advances in Intelligent Systems and Computing, 608, 160, 168, Springer Verlag, 2018年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • 歩行アシスト・レジストのための周期入力制御を用いた体幹回旋補助装置
    日下聖, 相津琢磨, 橋本光太郎, 田中孝之
    計測自動制御学会論文集, 54, 3, 373‐382(J‐STAGE), 382, 公益社団法人 計測自動制御学会, 2018年, [査読有り]
    日本語, 研究論文(学術雑誌), This paper proposed a walking assistance method by using trunk rotation based on the spinal engine theory. According to the spinal engine theory, our walking is realized by cooperation between upper body and legs through the energy exchange. Therefore, we developed an assistance device for trunk rotation and its control method. We adopted the periodic input control as the control method and modified it to be suitable for human assistance. According to experimental results, the proposed method realized walking assist by supporting trunk rotation movement. Moreover, it also realized training effect as the walking resist, by controlling a parameter of the controller. In this article, their effects were confirmed by theoretical analysis and experiments.
  • Individualization of Musculoskeletal Model for Analyzing Pelvic Floor Muscles Activity Based on Gait Motion Features.
    Tomohiro Wakaiki, Takayuki Tanaka, Koji Shimatani, Yuichi Kurita, Tadayuki Iida
    J. Robotics Mechatronics, 30, 6, 991, 1003, 2018年, [査読有り]
    英語, 研究論文(学術雑誌), Stress urinary incontinence (SUI) is a typical quality of life disease in women. The strengthening of the pelvic floor muscle (PFM) is considered effective to prevent this. Specifically, PFM activity is affected by individual pelvic shape and posture. Therefore, it is necessary to analyze muscle activity by considering the individual differences. In this study, individual pelvic alignment was estimated from the feature values of natural gait via multiple regression analysis. In addition, individual pelvic feature points were derived from X-ray images and used to deform the standard model to obtain individual pelvic shapes. Results indicate that the residual averages of the estimated feature angles were less than 2° in most cases. Subsequently, measurements of the pelvis were obtained via MRI to evaluate the estimated pelvis shape. The results indicate that individual adaptation leads to muscle attachment positions, which are important in the muscle activity analysis, and closer to the true MRI value when compared to that of the standard pelvic model.
  • 歩容改善のための体幹・骨盤運動補助による歩行アシスト
    橋本光太郎, 田中孝之, 日下聖
    日本機械学会論文集(Web), 84, 864, ROMBUNNO.18‐00064(J‐STAGE), 18-00064, 一般社団法人 日本機械学会, 2018年
    日本語, The purpose of this study is to develop a walking assist device by controlling trunk and pelvis motion. Human gait motion consists of whole body exercise including lower body motion and upper one. As all exercises are performed normally, walking with less energy loss is performed. If any exercises are incomplete, compensatory motion is performed and it is considered that there is energy loss. Therefore, this study aims at developing the walking assist device to make normal exercises and reduces energy loss by applying external forces, focusing on the trunk rotation and the pelvic rotation that involved in stride length and walking speed.
  • Feature selection for work recognition and working motion measurement
    Miyajima, S., Tanaka, T., Miyata, N., Tada, M., Mochimaru, M., Izumi, H.
    Journal of Robotics and Mechatronics, 30, 5, 706, 716, 2018年, [査読有り]
    英語, 研究論文(学術雑誌)
  • Unpowered Sensorimotor-Enhancing Suit Reduces Muscle Activation and Improves Force Perception
    Yuichi Kurita, Jumpei Sato, Takayuki Tanaka, Minoru Shinohara, Toshio Tsuji
    IEEE TRANSACTIONS ON HUMAN-MACHINE SYSTEMS, 47, 6, 1158, 1163, 2017年12月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Motion-tracking skill assist and power assist for sinusoidal motions with a semi-active assist mechanism using energy control
    Takashi Kusaka, Takayuki Tanaka, Hidekazu Kajiwara
    ROBOMECH Journal, 4, 1, 1, 11, Springer International Publishing, 2017年12月01日, [査読有り]
    英語, 研究論文(学術雑誌)
  • Evaluation Framework for Passive Assistive Device Based on Humanoid Experiments
    Yumeko Imamura, Ko Ayusawa, Eiichi Yoshida, Takayuki Tanaka
    International Journal of Humanoid Robotics, 15, 3, 1750026-1, 1750026-25, 2017年10月, [査読有り]
    英語, 研究論文(学術雑誌), This study presents an enhanced framework for evaluating an assistive effect generated by a passive assistive device using a humanoid robot. The humanoid robotic experiments can evaluate wearable devices by measuring the joint torque, which cannot be measured directly from the human body. In this paper, we introduce an “assistive torque estimation map” as an efficient means for estimating the supportive torque within the range of motions by interpolating the measured joint torques and joint angles of the robot. This map aims to estimate the supportive torques for complex motions without conducting humanoid experiments or human-subject experiments with these motions. We generated an estimation map for an actual assistive suit that decreases the load on the lumbar region and we verified the validity of the proposed method by experimentation. In addition, the geometric simulation model of the assistive suit was validated based on the proposed experiments by using the humanoid robot HRP-4. The proposed framework is expected to lead to an efficient design of such assistive devices so that fewer human-subject experiments need to be conducted.
  • 人間の動作計測精度向上を目的とした変動相補フィルタ
    宮島 沙織, 田中 孝之, 日下 聖
    計測自動制御学会論文集, 53, 5, 299, 307, 計測自動制御学会 ; [1965]-, 2017年05月, [査読有り]
    日本語, 研究論文(学術雑誌), These days, inertial sensors are often used to capture human movements. A complimentary filter is the one method of sensor fusion, which several sensors data are combined to set off each sensor's disadvantages. It is often used for wearable devices because of its high measurement accuracy at low calculation cost. Human motion contains various speeds and frequency. However, in a complementary filter, combined frequency range is fixed and the filter can not cope with motion out of the range. Thus, a coefficient of the complimentary filter is replaced with sigmoid function in order to fluctuate along with motion speed of subjects. This fluctuating coefficient enables measuring irregular motions of human. Experiment shows that using this method rises accuracy of motion measurement.
  • Unpowered sensorimotor-enhancing suit reduces muscle activation and improves force perception
    Yuichi Kurita, Jumpei Sato, Takayuki Tanaka, Minoru Shinohara, Toshio Tsuji
    IEEE Transactions on Human-Machine Systems, 99, 1, 6, 2017年05月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Field Testing of the Influence of Assistive Wear on the Physical Fitness of Nursing-Care Workers
    Yumeko Imamura, Takayuki Tanaka, Kazuki Takizawa
    Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 10652, 137, 146, Springer Verlag, 2017年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Individualization of Musculoskeletal Model to Analyze Pelvic Floor Muscles Activity               
    Tomohiro Wakaiki, Takayuki Tanaka, Koji Shimatani, Tadayuki Iida, Yoshio Tsuchiya, Kazuya Sugihara, Yoshimi Sugiyama
    DIGITAL HUMAN MODELING SYMPOSIUM, DHM-013FP, 2017年, [査読有り]
  • Nondestructive Inspection of Voids in Concrete by Multi-layered Scanning Method with Electromagnetic Waves
    Shotaro Kawataki, Takayuki Tanaka, Satoru Doi, Shigeru Uchida, Maria Q. Feng
    2017 IEEE INTERNATIONAL CONFERENCE ON MECHATRONICS (ICM), 336, 341, 2017年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • X線画像に基づく腰部負荷ウェアラブルセンサの提案と腰仙椎アライメント推定
    土谷 圭央, 日下 聖, 田中 孝之, 松尾 祥和, 小田 まこと, 笹木 工, 神島 保, 山中 正紀
    日本機械学会論文集, 82, 843, 16, 00072-16-00072, 一般社団法人 日本機械学会, 2016年10月, [査読有り]
    日本語, 研究論文(学術雑誌), Anteflexion of the spine is essential for many physical activities of daily living. However, this motion places the lumbar disks because it generats heavy load due to changes in the shape of the lumbar spine and can lead to low back pain. In older to reduce low back pain, here we proposed a wearable sensor system configuration that can estimate lumbosacral alignment and lumbar load by measuring the shape of the lumbar skin when the lumbosacral alignment changes. The shape of the lumbar skin and posture angle are measured by using curvature sensors and accelerometers. In addition, the system must be constructed in consideration of the physique, in order to absorb in a variety of human. We proposed this system by measuring the body parameters of anteflexion and studied the change in dimensions of the lumbar spine from changes in posture. By extracting the dimensions of the lumbosacral spine in X-ray images, the attitude angle, body surface area and the dimensions of the lumbosacral spine have relevance. The lumbosacral dimensions calibration method was developed by using that relation. Lumbosacral alignment estimation considering the difference in physiques is developed, and lumbosacral spine alignment was to improve the estimation accuracy. The proposed method could improve accuracy lumbosacral alignment estimation.
  • New evaluation framework for human-assistive devices based on humanoid robotics
    Ko Ayusawa, Eiichi Yoshida, Yumeko Imamura, Takayuki Tanaka
    ADVANCED ROBOTICS, 30, 8, 519, 534, 2016年04月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Prototype of a Trunk Rotation Assist System for Passive Dynamic Walking and Fundamental Experiments
    Kotara Hashimoto, Takayuki Tanaka, Takuma Aizu, Takashi Kusaka
    2016 WORLD AUTOMATION CONGRESS (WAC), 2016年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • A Fundamental Design of Controller of Trunk Rotation Assist Device for Passive Dynamic Walkl
    Takuma Aizu, Takayuki Tanaka, Kotara Hashimoto, Takashi Kusaka
    2016 WORLD AUTOMATION CONGRESS (WAC), 2016年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • 1F3-4 Workload Estimation Using Physical Burden and Heart Rate Variation
    Saori MIYAJIMA, Takayuki TANAKA, Hiroyuki IZUMI, Natsuki MIYATA, Mitsunori TADA, Masaaki MOCHIMARU
    The Japanese Journal of Ergonomics, 52, Supplement, S234, S235, Japan Ergonomics Society, 2016年, [査読有り]
    研究論文(学術雑誌)
  • A Calibration Method for Interbody Distance in Lumbosacral Alignment Estimation
    Yoshio Tsuchiya, Takashi Kusaka, Takayuki Tanaka, Yoshikazu Matsuo, Makoto Oda, Tsukasa Sasaki, Tamotsu Kamishima, Masanori Yamanaka
    INTELLIGENT ROBOTICS AND APPLICATIONS, ICIRA 2016, PT II, 9835, 200, 210, 2016年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Optimal Arrangement of Inertial Sensors for Workload Estimation Using Digital Human Model Based on Body Surface Deformation Analysis
    Miyajima, S., Miyata, N., Tada, M., Tanaka, T., Mochimaru, M.
    Advances in Physical Ergonomics and Human Factors, 489, 483, 494, 2016年, [査読有り]
    英語, 研究論文(学術雑誌)
  • パワーアシストのメカトロニクス(解説 介護・介助のメカトロニクス,<特集>リハビリ・介護とメカトロニクス)
    田中 孝之, 武居 直行
    日本機械学会誌, 119, 1166, 40, 41, 一般社団法人 日本機械学会, 2016年
    日本語
  • 介護作業用アシスト装具による軽労化効果と体力変化に関するフィールド試験結果
    今村由芽子, 田中孝之, 瀧澤一騎
    看護理工学会誌, 2, 3, 142, 149, 看護理工学会, 2015年08月25日
    日本語
  • Residual Correction Method for Fast Calculation of Arctangent in Embedded Systems
    Takashi Kusaka, Takayuki Tanaka, Hidekazu Kajiwara
    2015 IEEE/ASME INTERNATIONAL CONFERENCE ON ADVANCED INTELLIGENT MECHATRONICS (AIM), 42, 47, 2015年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Verification of Passive Power-Assist Device Using Humanoid Robot: Effect on Bending and Twisting Motion
    Yumeko Imamura, Takayuki Tanaka, Ko Ayusawa, Eiichi Yoshida
    2015 IEEE-RAS 15TH INTERNATIONAL CONFERENCE ON HUMANOID ROBOTS (HUMANOIDS), 1149, 1154, 2015年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Lumbar Load Estimation using a Musculoskeletal Model in Consideration of Vertebral Body Displacement: Lumbar Load Simulation under Static Conditions
    Yumeko Imamura, Takayuki Tanaka, Takashi Kusaka, Yoshio Tsuchiya
    2015 37TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC), 2015, 3905, 3908, 2015年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Calibration method for lumbosacral dimensions in wearable sensor system of lumbar alignment
    Yoshio Tsuchiya, Takashi Kusaka, Takayuki Tanaka, Yoshikazu Matsuo, Makoto Oda, Tsukasa Sasaki, Tamotsu Kamishima, Masanori Yamanaka
    2015 37TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC), 2015, 3909, 3912, 2015年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Lumbar Joint Torque Estimation Based on Simplified Motion Measurement Using Multiple Inertial Sensors
    Saori Miyajima, Takayuki Tanaka, Yumeko Imamura, Takashi Kusaka
    2015 37TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC), 2015, 6716, 6719, 2015年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Analysis of Trunk Stabilization Effect by Passive Power-Assist Device
    Yumeko Imamura, Takayuki Tanaka, Yoshihito Suzuki, Kazuki Takizawa, Masanori Yamanaka
    Journal of Robotics and Mechatronics, 26, 6, 791, 798, Fuji Technology Press, 2014年12月20日, [査読有り]
    英語, 研究論文(学術雑誌)
  • Control Method for Power Assisted Cart Using Walking Effect Prediction Aimed at Improvement of Load Reduction Ratio
    Norihiro Kobayashi, Takayuki Tanaka
    Journal of Robotics and Mechatronics, 26, 6, 780, 789, Fuji Technology Press, 2014年12月20日, [査読有り]
    英語, 研究論文(学術雑誌)
  • Development of Expanded Periodical Input Control for Periodic Motion with Multiple Frequency Components
    Takuto Yoshifuji, Takayuki Tanaka, Takashi Kusaka
    Journal of Robotics and Mechatronics, 26, 6, 692, 703, Fuji Technology Press, 2014年12月20日, [査読有り]
    英語, 研究論文(学術雑誌)
  • 超高齢社会とVR 高齢社会での社会参加支援のため軽労化技術の研究開発と評価システムの構築
    田中孝之, 奈良博之
    日本バーチャルリアリティ学会誌, 19, 3, 148-151,123(1), 2014年09月30日
    日本語
  • 任意点操作可能なパワーアシストシステムの操作性改善のための操作点インピーダンス制御
    渋川文哉, 田中孝之
    日本機械学会論文集, 80, 816, 1, 13, 2014年08月, [査読有り]
    日本語, 研究論文(学術雑誌), Multi-portal Human Interface (M-HI) as an innovative human interface for power assist systems has been researched and developed. The M-HI allows users to apply the operational force anywhere on the power assist system. When users control the PAS on its arbitrary point, The operational point motion is different from the end-effecter motion, even if the end-effecter move as ideal motion for users. The phenomenon affects user's maneuverability decrease. In this paper, impedance paremeters on the operational point are forcused. The relationsihp between the operational point motion and maneuverability are analyzed in terms of the impedance parameters. To evaluate the maneuverability of PAS applied M-HI, The impedance parameters of each operational point is calculated. Furthermore, modification of impedance parameters on the operational point is proposed. However, the method raise end-effecter motion error, the modification amount optimization is required. In this paper, the optimization method and results of fundamental maneuverability evaluations are shown.
  • 周期運動追従スキル向上のためのセミアクティブアシスト機構の補助力位相差制限法によるスキルアシスト効率制御
    日下聖, 田中孝之, 梶原秀一
    日本ロボット学会誌, 32, 2, 108, 116, 日本ロボット学会, 2014年03月, [査読有り]
    日本語, 研究論文(学術雑誌), This paper describes a method of skill assist efficiency control by using semi-active assist mechanisms based on phase difference limitation method. The skill assist in this study means the motion correction effect in periodical motions. The semi-active assist mechanisms can make the assist force with the phase difference, because the mechanism uses elastic materials as the source of the assist force. This force is controlled by adjusting the fixed point of the elastic materials by using the connected actuator as a series-elastic actuator. We confirmed the motion correction effect of our skill assist based on the phase difference control in previous study. Our proposed method in this study can control the skill assist efficiency to arbitrary value by limitation of the phase difference. Moreover, we confirmed that the proposed method can control its effect through experiments with several value of the efficiency. As a result of this study, we confirmed the fundamental ability of our developed method to control the motion correction ratio depending on types of task or personal differences in periodical motions.
  • Simultaneous Realization of Power Assist and Skill Assist for Sinusoidal Motions by using Semi-active Assist Mechanism
    Takashi Kusaka, Takayuki Tanaka
    2014 PROCEEDINGS OF THE SICE ANNUAL CONFERENCE (SICE), 1762, +, 2014年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Power-Assisted cart Control Method with Motor Torque Limiter based on Prediction and its reliability
    Norihiro Kobayashi, Takayuki Tanaka
    2014 IEEE/SICE INTERNATIONAL SYMPOSIUM ON SYSTEM INTEGRATION (SII), 632, 637, 2014年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Unloading muscle activation enhances force perception
    Yuichi Kurita, Jumpei Sato, Takayuki Tanaka, Minoru Shinohara, Toshio Tsuji
    ACM International Conference Proceeding Series, 2014年, [査読有り]
    研究論文(国際会議プロシーディングス)
  • Evaluation of Assistive Devices Using Humanoid Robot with Mechanical Parameters Identification
    Ko Ayusawa, Shin'ichiro Nakaoka, Eiichi Yoshida, Yumeko Imamura, Takayuki Tanaka
    2014 14th IEEE-RAS International Conference on Humanoid Robots (Humanoids), 205, 211, 2014年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Verification of Assistive Effect Generated by Passive Power-Assist Device Using Humanoid Robot
    Yumeko Imamura, Takayuki Tanaka, Ko Ayusawa, Eiichi Yoshida
    2014 IEEE/SICE INTERNATIONAL SYMPOSIUM ON SYSTEM INTEGRATION (SII), 761, 766, 2014年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Estimation of lumbar load by 2D reconstruction of spine line using wearable sensor system
    Yoshio Tsuchiya, Yoshikazu Matsuo, Takayuki Tanaka
    Conference Proceedings - IEEE International Conference on Systems, Man and Cybernetics, 2014-, January, 3669, 3674, Institute of Electrical and Electronics Engineers Inc., 2014年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Parallel bicycles and their applications
    Maria Q. Feng, Takashi Kawamura, Takayuki Tanaka
    Journal of Robotics and Mechatronics, 26, 1, 9, 14, Fuji Technology Press, 2014年
    英語
  • Pneumatically Driven Prehension Orthosis with Force Control Function
    Shunji Moromugi, Takayuki Tanaka, Toshio Higashi, Maria Q. Feng, Takakazu Ishimatsu
    Journal of Robotics and Mechatronics, 25, 6, 973, 982, 2013年12月20日, [査読有り]
    英語, 研究論文(学術雑誌)
  • 介護作業従事者の日常業務が疲労感と体力に及ぼす影響
    苫米地伸泰, 瀧澤一騎, 田中孝之, 鈴木善人
    体力科学, 62, 6, 653, 654, 2013年12月01日
    日本語
  • 任意点で操作可能な多リンクパワーアシストシステムの操作点運動協調化制御
    渋川文哉, 田中孝之
    日本ロボット学会誌, 31, 9, 108, 943, The Robotics Society of Japan, 2013年11月, [査読有り]
    日本語, 研究論文(学術雑誌), We have proposed a Multi-portal Human Interface (M-HI) as an innovative human interface for power assist systems (PAS). The M-HI allows users to apply the operational force anywhere on the power assist system. Because of that, the effective workspace of the PAS is extended as their end-effecter can be controlled as a user desires. However, when users control the PAS on its intermediate joint, the control point motion is different from the end-effecter motion. This motion affects maneuverability of the PAS. In this paper, we consider the number of links and degrees of freedom on a multi-link manipulator. The relation between the control point motion and maneuverability is analyzed. The operational point motion harmonization (OPMH) is based on this relation. This method enables users to control the PAS with M-HI more accurately.
  • ロボットマニピュレータのコンプライアント接触による葡萄樹根元位置の検出
    井川久, 田中孝之, 金子俊一, 多田達実, 鈴木慎一, 大村功
    精密工学会誌, 79, 7, 651, 658, 公益社団法人 精密工学会, 2013年07月, [査読有り]
    日本語, To remove weeds around a grape vine without damaging the stem, we propose a contact recognition technology in this paper. The developed technique can reliably determine the position of the vine's lower stem, which may be deformed under sufficient force and may be buried in the weeds. We have developed a new method to detect the position of grape stems as objects in which its deformation is considered. By calculating the deformation from the relations between the geometry and mechanics of manipulator's link postures before and after contact point detection, the position of the object can be determined with high accuracy. Because stem position detection commences after tactile recognition has been performed, any deformation of the object has already occurred. The effect of this initial deformation on the detection accuracy cannot be ignored. Therefore, position detection of object is divided into two operations : reducing the object deformation and detecting the object position. In this way, highly accurate recognition of its position is achieved. The paper continues by giving a detailed explanation of the proposed method.
  • 形状の異なるスコップを使用した6週間の雪かき作業は体力テスト結果に影響を及ぼすのか?
    瀧澤一騎, 田中孝之, 吉成哲, 奈良博之, 柴田啓介, 山中正紀, 鈴木善人
    日本生理人類学会誌, 18, 2, 27, 32, 2013年05月25日
    日本語
  • A Modeling of Cerebral Blood Flow Changes due to Head Motion for fNIRS
    Kosuke Takahashi, Takayuki Tanaka, Hiroyuki Nara, Shun'ichi Kaneko, Masao Inoue, Shunji Shimizu, Satoru Kojima
    INTERNATIONAL JOURNAL OF OPTOMECHATRONICS, 7, 2, 83, 95, 2013年04月
    英語, 研究論文(学術雑誌)
  • Improving the Maneuverability of Power Assist Valves by Considering the Characteristics of Biarticular Muscles               
    Motoki Nakano, Takayuki Tanaka, Shun'ichi Kaneko
    Journal of Robotics and Mechatronics, 25, 1, 145, 152, 2013年02月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Improving the Maneuverability of Power Assist Valves by Considering the Characteristics of Biarticular Muscles
    Motoki Nakano, Takayuki Tanaka, Shun'ichi Kaneko
    Journal of Robotics and Mechatronics, 25, 1, 145, 152, 2013年02月, [査読有り]
    英語, 研究論文(学術雑誌)
  • KI‐VPAモデルに基づくVibration Alert Interfaceの順応による振動感覚変化の補正方法
    森友揮, 田中孝之, 金子俊一, 片桐祥雅
    ヒューマンインタフェース学会論文誌(CD-ROM), 15, 1/4, 305, 312, ヒューマンインタフェース学会, 2013年02月, [査読有り]
    日本語
  • Vision-based displacement sensor for monitoring dynamic response using robust object search algorithm
    Yoshio Fukuda, Maria Q. Feng, Yuto Narita, Shun'Ichi Kaneko, Takayuki Tanaka
    IEEE Sensors Journal, 13, 12, 4725, 4732, 2013年
    英語, 研究論文(学術雑誌)
  • A proposal for a model of change of maximum isometric muscle force in step-changeworkload
    Shota Ando, Takayuki Tanaka, Hiroyuki Nara, Kazuki Takizawa
    Journal of Robotics and Mechatronics, 25, 6, 1050, 1059, Fuji Technology Press, 2013年, [査読有り]
    英語, 研究論文(学術雑誌)
  • A proposal for a model of change of maximum isometric muscle force in step-changeworkload
    Shota Ando, Takayuki Tanaka, Hiroyuki Nara, Kazuki Takizawa
    Journal of Robotics and Mechatronics, 25, 6, 1050, 1059, Fuji Technology Press, 2013年, [査読有り]
    英語, 研究論文(学術雑誌)
  • Improvement of sensory stabilization and repeatability of vibration interface for distance presentation
    Yuki Sampei, Takayuki Tanaka, Yuki Mori, Shun'Ichi Kaneko
    Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 8027, 734, 743, 2013年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Editorial: Assistive Technology Based on ICT/IRT for Aged Society.
    Takayuki Tanaka, Yasuhisa Hasegawa, Takanori Miyoshi, Shunji Shimizu, Tohru Ifukube
    J. Robotics Mechatronics, 25, 6, 887, 887, 2013年
    研究論文(学術雑誌)
  • Correction method based on KI-VPA model for changes in vibratory perception caused by adaptation
    Yuki Mori, Takayuki Tanaka, Shun'Ichi Kaneko
    Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 8016, 1, 107, 116, 2013年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Development on Smart Suit for Dairy Work Assistance
    Hiroyuki Nara, Takashi Kusaka, Takayuki Tanaka, Takayuki Yamagishi, Shotaroh Ogura
    2013 35TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC), 2840, 2843, 2013年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • 形状の異なるスコップを使用した6週間の雪かき作業は体力テスト結果に影響を及ぼすのか?
    瀧澤 一騎, 田中 孝之, 吉成 哲, 奈良 博之, 柴田 啓介, 山中 正紀, 鈴木 善人
    日本生理人類学会誌, 18, 2, 87, 92, 日本生理人類学会, 2013年
    日本語, We examined physical fitness adaptation after six weeks of snow shovelling using different types of shovels. Thirty-three subjects participated in this study and were divided two groups: normal shovel group and less-workload shovel (UD-shovel) group. Grip strength, vertical jump, 10 m obstacle walking, chair rising test, lactate threshold and body mass were measured before and after six weeks of snow shovelling. All measurements showed no significant differences between the groups. The chair rising test and ten meter obstacle walking were significantly at main effects. These values were higher in the after period than in the before period. But there were no significant differences at main effects in grip strength, vertical jump, lactate threshold and body mass. These results suggest that six weeks of snow shovelling may not affect upper body strength and aerobic capacity, but may affect lower body and muscle of trunk strength, power, agility, balance and coordination. These effects were not different if using normal shovels or UD-shovels.
  • Postural Stabilization by Trunk Tightening Force Generated by Passive Power-Assist Device
    Yumeko Imamura, Takayuki Tanaka, Hiroyuki Nara, Yoshihito Suzuki, Kazuki Takizawa, Masanori Yamanaka
    2013 35TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC), 2836, 2839, 2013年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Humanoid Robot as an Evaluator of Assistive Devices
    Kanako Miura, Eiichi Yoshida, Yoshiyuki Kobayashi, Yui Endo, Fumio Kanehioro, Keiko Homma, Isamu Kajitani, Yoshio Matsumoto, Takayuki Tanaka
    2013 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION (ICRA), 2013 Vol.1, 679, 685, 2013年
    英語, 研究論文(国際会議プロシーディングス)
  • 雪かき作業時における筋力補助スーツ着用による軽労化効果の評価
    瀧澤一騎, 田中孝之, 吉成哲, 柴田啓介, 鈴木善人
    体力科学, 61, 6, 684, 684, (一社)日本体力医学会, 2012年12月01日
    日本語
  • Power-Assisted cart Control Method with Motor Torque Limiter based on Prediction of Torque Saturation               
    Norihiro Kobayashi, Takayuki Tanaka, Shun'ichi Kankeo
    Journal of Energy & Power Engineering, 6, 8, 1349, 2012年10月, [査読有り]
    英語, 研究論文(学術雑誌)
  • モーションステレオ計測におけるカメラ振動に伴う対象物位置の信頼性
    岡崎 伸哉, 田中 孝之, 金子 俊一, 高氏 秀則, 高地 伸夫, 山田 光晴
    電気学会論文誌. D, 産業応用部門誌 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society, 132, 10, 942, 950, 一般社団法人 電気学会, 2012年10月01日
    日本語, This study is aimed at developing a high-reliability motion stereo system through the consideration of camera vibration. In stereo measurement, we can approximate the distribution of measurement the error in images as a uniform distribution, and the distribution of the disparity error as a triangular distribution. Therefore, the parameters of the distributions are the mean value µ and the standard deviation σ, while the amplitude A and the frequency F are regarded as parameters of camera vibration. In our previous work, we constructed a model of the measurement error resulting from camera vibration. In this study, we define the existing probability of objects by using the measurement error model, and the reliability of object position. In addition, we verify the validity of the existing probability and reliability.
  • Vibration Alert Interface における振動周波数に対する振動感覚順応とそのモデル化
    森 友揮, 田中 孝之, 金子 俊一, 片桐 祥雅
    ヒューマンインタフェース学会論文誌, 14, 3, 293, 301, ヒューマンインタフェース学会, 2012年08月25日
    日本語,

    This paper describes a method to model the change in vibratory perception due to the adaptation. In the vibration alert interface, user has to perceive the vibratory frequency correctly, however when the frequency was the same, the vibration perception was different if the frequency before change was different. Experimental results showed that the higher vibration frequency before the change is, the weaker vibration strength user perceives. In order to correct this difference of vibratory perception, we create a model to calculate the perception adaptation. Simulation result shows accuracy of this model.

  • Power-Assisted cart Control Method with Motor Torque Limiter based on Prediction of Torque Saturation               
    Norihiro Kobayashi, Takayuki Tanaka, Shun'ichi Kankeo
    Journal of Energy & Power Engineering, 6, 8, 1349, 2012年08月, [査読有り]
    英語
  • ファジィ回帰分析による視空間認識の分解能を考慮したパワーアシストシステムの操作力安定化
    渋川 文哉, 田中 孝之, 金子 俊一
    日本ロボット学会誌, 30, 4, 420, 427, 日本ロボット学会, 2012年05月15日
    日本語, 研究論文(学術雑誌)
  • A Yank-based Variable Coefficient Method for a Low-Powered Semi-Active Power Assist System               
    Andre Rosendo, Takayuki Tanaka, Shun'ichi Kaneko
    Journal of Robotics and Mechatronics, 24, 2, 291, 297, 2012年04月, [査読有り]
    英語
  • 葡萄園除草ロボットのための葡萄樹の視覚認識能力を考慮したロバスト触覚認識
    井川 久, 田中 孝之, 金子 俊一
    精密工学会誌, 78, 2, 160, 167, 精密工学会, 2012年02月
    日本語, 研究論文(学術雑誌)
  • Vibration Alert Interfaceにおける振動周波数に対する振動感覚順応とそのモデル化
    森友揮, 田中孝之, 金子俊一, 片桐祥雅
    ヒューマンインタフェース学会論文誌(CD-ROM), 14, 1/4, 293, 301, 2012年02月, [査読有り]
    日本語
  • A Modeling of Cerebral Blood Flow Changes due to Head Motion for fNIRS
    Kosuke Takahashi, Takayuki Tanaka, Hiroyuki Nara, Shun'ichi Kaneko, Masao Inoue, Shunji Shimizu, Satoru Kojima
    2012 INTERNATIONAL SYMPOSIUM ON OPTOMECHATRONIC TECHNOLOGIES (ISOT), 7, 1/2, 83, 95, 2012年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Vibration Alert Interfaceにおける振動周波数に対する振動感覚順応とそのモデル化
    森 友揮, 田中 孝之, 金子 俊一
    ヒューマンインタフェース学会論文誌 The transactions of Human Interface Society, 14, 1, 293, 301, ヒューマンインタフェース学会, 2012年, [査読有り]
    日本語
  • 調教騎手用筋力補助装具スマートスーツ・ライトの開発 : 騎乗装具との一体化による装着感の向上と負担軽減効果の検証
    日下 聖, 田中 孝之, 今村 由芽子
    Hippophile, 0, 47, 27, 33, 日本ウマ科学会, 2012年01月
    日本語
  • A yank-based variable coefficient method for a low-powered semi-active power assist system
    Andre Rosendo, Takayuki Tanaka, Shun'ichi Kaneko
    Journal of Robotics and Mechatronics, 24, 2, 291, 297, Fuji Technology Press, 2012年, [査読有り]
    英語, 研究論文(学術雑誌)
  • Analysis of Power Assist Effect during Skill Assist for Periodic Motions Under Use of Semi-active Assist Mechanisms
    Takashi Kusaka, Takayuki Tanaka, Shun'ichi Kaneko, Hidekazu Kajiwara
    2012 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS (IROS), 758, 763, 2012年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Improving the Maneuverability of Power Assist Valves by Compensation Considering of Posture
    Motoki Nakano, Takayuki Tanaka, Shun'ichi Kaneko
    2012 IEEE/ASME INTERNATIONAL CONFERENCE ON ADVANCED INTELLIGENT MECHATRONICS (AIM), 1111, 1116, 2012年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Base Position Detection of Grape Stem Considering Its Displacement for Weeding Robot in Vineyards
    Hisashi Igawa, Takayuki Tanaka, Shun'ichi Kaneko, Tatsumi Tada, Shin'ichi Suzuki, Isao Ohmura
    38TH ANNUAL CONFERENCE ON IEEE INDUSTRIAL ELECTRONICS SOCIETY (IECON 2012), 2567, 2572, 2012年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Motion-based design of elastic belts for passive assistive device using musculoskeletal model
    Yumeko Imamura, Takayuki Tanaka, Yoshihito Suzuki, Kazuki Takizawa, Masanori Yamanaka
    2011 IEEE International Conference on Robotics and Biomimetics, IEEE, 2011年12月
    研究論文(国際会議プロシーディングス)
  • 形状の違うスコップによる6週間の雪かき作業が体力に及ぼす影響
    瀧澤一騎, 田中孝之, 吉成哲, 奈良博之, 柴田啓介, 鈴木善人
    体力科学, 60, 6, 797, 797, (一社)日本体力医学会, 2011年12月01日
    日本語
  • 雪かき運動による漸増負荷試験は全身持久力テストとして妥当か?
    柴田啓介, 田中孝之, 瀧澤一騎, 吉成哲, 鈴木善人
    体力科学, 60, 6, 765, 765, (一社)日本体力医学会, 2011年12月01日
    日本語
  • 雪かき運動におけるLT強度測定を目的とした漸増負荷運動プロトコルの作成
    瀧澤一騎, 吉成哲, 奈良博之, 鈴木善人, 田中孝之
    体力科学, 60, 4, 468, 469, 2011年08月01日
    日本語
  • カメラ振動を考慮したステレオ計測誤差モデル
    岡崎 伸哉, 田中 孝之, 金子 俊一, 高氏 秀則, 高地 伸夫, 山田 光晴
    電気学会論文誌. D, 産業応用部門誌 = The transactions of the Institute of Electrical Engineers of Japan. D, A publication of Industry Applications Society, 131, 4, 522, 530, 一般社団法人 電気学会, 2011年04月01日
    日本語, This study aims to establish an error model for a stereo measurement system by considering camera vibration. In stereo measurements, we can approximate the measurement error distribution in images as a uniform distribution. Therefore, the parameters of the measurement error distribution are the mean value µ and the standard deviation σ, while the amplitude A and the frequency F are regarded as the parameters of the camera vibration. In order to verify the relationships between the parameters of the measurement error distribution and those of the camera vibration, we performed an experiment using a vibration-testing system. The results of the experiment showed that the vibration did not affect µ. Moreover, we found a positive correlation between σ and A as well as a negative correlation betweenσ and F. Using these relationships, we estimated the parameters of the measurement error from the parameters of the camera vibration.
  • Motion-based-design of elastic material for passive assistive device using musculoskeletal model
    Yumeko Imamura, Takayuki Tanaka, Yoshihito Suzuki, Kazuki Takizawa, Masanori Yamanaka
    Journal of Robotics and Mechatronics, 23, 6, 978, 990, Fuji Technology Press, 2011年, [査読有り]
    英語, 研究論文(学術雑誌)
  • Design of vibration alert interface based on tactile adaptation model to vibration stimulation
    Yuki Mori, Takayuki Tanaka, Shun'ichi Kaneko
    Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 6771, 1, 462, 469, 2011年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Skill assist and power assist for periodic motions by using semi-active assist mechanism with energy control
    Takashi Kusaka, Takayuki Tanaka, Shun'ichi Kaneko, Hidekazu Kajiwara
    2011 IEEE International Conference on Robotics and Biomimetics, ROBIO 2011, 2187, 2192, 2011年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Fundamental study on evaluation of KEIROKA(fatigue-reduction) technology in using UD shovel for removing snow by musculo-skeletal dynamics simulator
    Hiroyuki Nara, Takayuki Tanaka, Yumeko Imamura, Satoshi Yoshinari, Yasuhiro Nakajima, Shun'ichi Kaneko
    2011 IEEE International Conference on Robotics and Biomimetics, ROBIO 2011, 1579, 1584, IEEE, 2011年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • A design of the multi-portal human interface considering user's line of sight and controlling stability
    Fumiya Shibukawa, Takayuki Tanaka, Shun'ichi Kaneko
    2010 IEEE International Conference on Robotics and Biomimetics, IEEE, 2010年12月, [査読有り]
    研究論文(国際会議プロシーディングス)
  • High-speed impedance matching based on muscle characteristic and its application for improving maneuverability of power assist valve
    Motoki Nakano, Shunichi Kaneko, Takayuki Tanaka, Koichi Yamano
    2010 IEEE International Conference on Systems, Man and Cybernetics, IEEE, 2010年10月, [査読有り]
    研究論文(国際会議プロシーディングス)
  • Self-localization of a mobile robot on irregular ground using a laser range finder               
    Naohito Takasuka, Takayuki Tanaka, Shun'ichi Kaneko, Tatsumi Tada, Shin'ichi Suzuki
    2010 World Automation Congress, 1, 6, 2010年09月, [査読有り]
    研究論文(国際会議プロシーディングス)
  • A method of trajectory generation to vehicle robot under unknown environment               
    D. Nagahara, S. Takahashi, T. Tanaka, S. Kaneko
    Proceedings of World Automation Congress, 2010年09月, [査読有り]
  • 動きを“視る”動作解析 動作計測に基づいた筋力補助装置・装具の設計
    田中孝之
    映像情報Industrial, 42, 8, 41, 47, 2010年08月, [招待有り]
    日本語
  • 把持力による皮膚変形を考慮した Vibration Alert Interface の振動強度設計
    森 友揮, 田中 孝之, 金子 俊一
    ヒューマンインタフェース学会論文誌, 12, 2, 103, 111, ヒューマンインタフェース学会, 2010年05月25日
    日本語
  • A novel semi-active assist system considering low-powered actuator limitations
    Andre Rosendo, Takayuki Tanaka, Shuńichi Kaneko
    2010 IEEE International Conference on Robotics and Biomimetics, ROBIO 2010, 1104, 1109, 2010年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Modeling stereo measurement error by considering camera vibration
    Shin'ya Okazaki, Takayuki Tanaka, Shun'ichi Kaneko, Hidenori Takauji, Nobuo Kochi, Mitsuharu Yamada
    2010 International Symposium on Optomechatronic Technologies, ISOT 2010, 2010年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Control method for power-assist systems with energy regeneration system based on predicting operation
    Norihiro Kobayashi, Takayuki Tanaka, Shun'ichi Kaneko
    IECON 2010 - 36TH ANNUAL CONFERENCE ON IEEE INDUSTRIAL ELECTRONICS SOCIETY, 2010年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Vision-Based Displacement Sensor for Monitoring Dynamic Response Using Robust Object Search Algorithm
    Yoshio Fukuda, Maria Feng, Yuto Narita, Shun'ichi Kaneko, Takayuki Tanaka
    2010 IEEE SENSORS, 1928, 1931, 2010年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Assist Force Control of Smart Suit for Horse Trainers Considering Motion Synchronization               
    T. Kusaka, T. Tanaka, S. Kaneko, Y. Suzuki, M. Saito, H. Kajiwara
    International Journal of Automation Technology, 3, 6, 723, 730, 2009年12月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Visual and tactual recognition of trunk of grape for weeding robot in vineyards
    Hisashi Igawa, Takayuki Tanaka, Shun'ichi Kaneko, Tatsumi Tada, Shin'ichi Suzuki
    2009 35th Annual Conference of IEEE Industrial Electronics, IEEE, 2009年11月, [査読有り]
    研究論文(国際会議プロシーディングス)
  • Improving Maneuverability of Power-Assisted Valve for Fire Engines Based on Prediction of Valve Opening Time               
    Motoki Nakano, Takayuki Tanaka, Shun’ichi Kaneko, Koichi Yamano, Yoichiro Tsutsui
    Journal of Robotics and Mechatronics, 21, 5, 628, 634, 2009年10月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Human Joint Motion Recognition Using Ultrasound Pulse Echo Based on Test Feature Classifier               
    Yoichiro Tsutsui, Takayuki Tanaka, Shun’ichi Kaneko, Yukinobu Sakata, Maria Q. Feng
    Journal of Robotics and Mechatronics, 21, 5, 597, 606, 2009年10月, [査読有り]
    英語, 研究論文(学術雑誌)
  • 競走馬調教軽労化のための騎手用筋力補助装置の開発
    田中 孝之, 齊藤 宗信, 鈴木 善人
    デサントスポ-ツ科学, 30, 163, 171, 石本記念デサントスポ-ツ科学振興財団事務局, 2009年06月
    日本語
  • 方向符号照合に基づくロバスト合焦法
    LI Yuan, 高氏秀則, 大村功, 金子俊一, 田中孝之
    精密工学会誌(CD-ROM), 75, 5, 650, 656, 2009年05月05日
    日本語
  • 欠陥種を考慮に入れた局所一貫性に基づく欠陥パタン照合法
    浦野 貴裕, 金子 俊一, 高氏 秀則, 田中 孝之, 前田 俊二, 渋谷 久恵, 吉田 実
    電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society, 129, 5, 778, 785, 一般社団法人 電気学会, 2009年05月01日
    日本語, A novel algorithm for rotational registration of dot-cloud data based on Local Consistency of Point Dispersion considering defect types (color LCPD) is proposed. In this approach, a new measurement of the local consistency of the distribution of the dot clouds in both data sets is developed, which can then be combined into a weighted-metric based on the importance of the defect types. This method is expected to be effective and robust in the registration of randomly distributed, inconsistent observations. It has been shown to converge to the true solution in a variety of cases involving both real and simulated data.
  • Robust Focusing using Orientation Code Matching               
    Yuan Li, Isao Ohmura, Hidenori Takauji, Shun'ichi Kaneko, Takayuki Tanaka
    Electronic Letters on Computer Vision and Image Analysis, 7, 3, 101, 114, 2009年, [査読有り]
    英語, 研究論文(学術雑誌)
  • Assist force control of smart suit for horse trainer considering motion synchronization and postural stabilization               
    Takashi Kusaka, Takayuki Tanaka, Shun'ichi Kaneko, Yoshihito Suzuki, Munenobu Saito, Shuji Seki, Naohisa Sakamoto, Hidekazu Kajiwara
    ICCAS-SICE 2009 - ICROS-SICE International Joint Conference 2009, Proceedings, 770, 775, 2009年
    英語, 研究論文(国際会議プロシーディングス)
  • Multi-portal Human Interface
    Fumiya Shibukawa, Takayuki Tanaka, Shun'ichi Kaneko
    IECON: 2009 35TH ANNUAL CONFERENCE OF IEEE INDUSTRIAL ELECTRONICS, VOLS 1-6, 35th Vol.6, 4010, 4015, 2009年
    英語, 研究論文(国際会議プロシーディングス)
  • 方向符号照合による農作業機のためのロバスト速度計測
    中原 和哉, 高氏 秀則, 金子 俊一, 田中 孝之, 清水 将志, 宮下 行雄, 大村 功
    電子情報通信学会論文誌. D, 情報・システム = The IEICE transactions on information and systems (Japanese edition), 91, 3, 793, 802, 一般社団法人電子情報通信学会, 2008年03月01日
    日本語, 圃場での大きなスリップなどが避けられないスプレイヤ(散布機)やハーベスタ(収穫機)などの農作業機の実速度をロバストに計測するためのシステムを開発することを目的とする.従来のタコメータ形式の計測ではなく,地面の移動量を画像照合により間接的に測定する.その際,方向符号照合法に基づくことにより,天候不良,圃場の状態変動などの影響を排除したロバスト計測を実現した.試作システムを農耕用トラクタに搭載し,雨天や作業内容が異なる実圃場において速度計測実験を行うことにより有効性を検証した.
  • 重み付き投票処理によるテスト特徴法の性能改良
    坂田 幸辰, 金子 俊一, 田中 孝之
    電子情報通信学会論文誌. D, 情報・システム = The IEICE transactions on information and systems (Japanese edition), 91, 1, 89, 100, 一般社団法人電子情報通信学会, 2008年01月01日
    日本語, 本論文では,ノンパラメトリックなパターン分類器として提案されたテスト特徴分類器(TFC)の識別性能の改良と,その実応用における可能性を検証することを目的とする.TFCでは,分類に有効な特徴量の組合せであるプライムテスト特徴(PTF)に投影された入力未知パターンに対して同時に最近傍法による識別を行い,それらの認識結果に基づく投票処理の集票スコアにより入力パターンを識別する.本手法では,PTFの特性に基づいた重み係数による重み付き投票処理を行う.これにより,各PTFの機能がより効果的に発揮され分類器の性能向上が期待できる.更に提案手法を逐次学習アルゴリズムへ拡張する.実データによる実験結果により本手法の有効性を確認した.
  • Robust self-matching based focus measure
    Li Yuan, Hidenori Takauji, Shun'ichi Kaneko, Takayuki Tanaka, Isao Ohmura
    Proceedings of SPIE - The International Society for Optical Engineering, 7266, 2008年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Object recognition based on relationship between camera vibration and measurement error on stereo measurement
    Shin'ya Okazaki, Takayuki Tanaka, Syun'ichi Kaneko, Hidenori Takauji
    Proceedings of SPIE - The International Society for Optical Engineering, 7266, 2008年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • A blowing-based method of detecting trunk and estimating root position for weeding mobile robots
    Fan Zhang, Akihiko Matsushita, Shun'ichi Kaneko, Takayuki Tanaka
    Proceedings of SPIE - The International Society for Optical Engineering, 7266, 2008年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Smart Suit: Soft Power Suit with Semi-active Assist Mechanism - Prototype for Supporting Waist and Knee Joint
    Takayuki Tanaka, Yuta Satoh, Shun'ichi Kaneko, Yoshihito Suzuki, Naohisa Sakamoto, Shuji Seki
    2008 INTERNATIONAL CONFERENCE ON CONTROL, AUTOMATION AND SYSTEMS, VOLS 1-4, 1707, +, 2008年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • 超音波エコーを用いた肘関節トルク・角度の同時推定
    筒井洋一郎, 早瀬一彦, 田中孝之, 金子俊一, FENG Maria Q
    精密工学会誌(CD-ROM), 73, 11, 1273, 1278, 2007年11月05日
    日本語
  • 局所一貫性による点群の回転照合法と欠陥パターン照合への応用
    浦野 貴裕, 金子 俊一, 高氏 秀則, 田中 孝之, 前田 俊二, 渋谷 久恵, 吉田 実
    電子情報通信学会論文誌. D, 情報・システム = The IEICE transactions on information and systems (Japanese edition), 90, 10, 2798, 2806, 一般社団法人電子情報通信学会, 2007年10月01日
    日本語, 照合指標のない光学・磁気ディスクメディアのような回転媒体における新しいロバスト回転照合アルゴリズムLocal Consistency of Point Dispersion (LCPD)法を提案する.これは個々の点データ周りの局所的範囲における他点群データとの分布の一貫性を評価し,その局所的評価値は重みを設定して累積するアプローチに基づいている.提案手法の例外値に対するロバスト性について,点群データの分類に基づく定性的な考察を行っている.提案手法が例外値データの含有に対して,高いロバスト性を有し,しかも良好な収束性能を実現していることを,シミュレーション,及び実データに基づく実験によって示す.
  • 生体を透過した超音波による関節トルク・角度推定
    筒井洋一郎, 田中孝之, 金子俊一, FENG Maria Q
    精密工学会誌(CD-ROM), 73, 9, 1062, 1067, 2007年09月05日
    日本語
  • 方向符号差分ヒストグラムに基づくロバスト回転不変照合法
    浦野 貴裕, 金子 俊一, 高氏 秀則, 田中 孝之
    画像電子学会誌 = Imaging & Visual Computing The Journal of the Institute of Image Electronics Engineers of Japan, 36, 4, 417, 425, 一般社団法人 画像電子学会, 2007年07月25日
    日本語, 方向符号差分ヒストグラム(OCDH)に基づき回転不変かつ計算コストの低いロバストな画像照合法を提案する.画素近傍の明度変化の勾配から得られる方向符号は,ハイライトや陰影などの明度変動対して強いロバスト性を有する.画像上の2点から得られる方向符号の差分は,回転不変特徴を持ち,本手法では,そのヒストグラム(OCDH)を照合に利用する.高速な回転不変照合実現のため,照合の候補位置をOCDHにより推定し,推定された候補位置に対して画像間の回転角度推定,ならびに方向符号を用いた確認処理を行う.
  • Mono‐MoCapに基づく2眼ステレオ視の計測範囲の拡張
    高橋秀典, 田中孝之, 金子俊一
    精密工学会誌(CD-ROM), 73, 6, 671, 676, 2007年06月05日
    日本語
  • Human joint movement recognition by using ultrasound echo based on test feature classifier
    Yoichiro Tsutsui, Yukinobu Sakata, Takayuki Tanaka, Shun'ichi Kaneko, Maria Q. Feng
    2007 IEEE SENSORS, VOLS 1-3, 1205, 1208, 2007年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Visual guide power assist system to adapt operators' motion - art. no. 6719OH
    Shunsuke Kawaai, Takayuki Tanaka, Shunichi Kaneko
    OPTOMECHATRONIC SYSTEMS CONTROL III, 6719, OH719, OH719, 2007年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Vision based environment recognition for mobile robot in irregular ground
    Shin'ya Okazaki, Takayuki Tanaka, Syun'ichi Kaneko, Akihiko Matsushita
    2007 INTERNATIONAL CONFERENCE ON CONTROL, AUTOMATION AND SYSTEMS, VOLS 1-6, 1860, 1864, 2007年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Robust focusing by Orientation Code Matching
    Yuan Li, Isao Ohmura, Hidenori Takauji, Shun'ichi Kaneko, Takayuki Tanaka
    PROCEEDINGS OF SICE ANNUAL CONFERENCE, VOLS 1-8, 749, +, 2007年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • 3D measurement of flexible objects by robust motion stereo
    Y. Domae, H. Takauji, S. Kaneko, T. Tanaka, H. Okuda, M. Hashimoto
    PROCEEDINGS OF SICE ANNUAL CONFERENCE, VOLS 1-8, 737, +, 2007年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • 3-dimensional measurement of cable configuration being based on feature tracking motion stereo
    Yukiyasu Domae, Haruhisa Okuda, Hidenori Takauji, Shun'ichi Kaneko, Takayuki Tanaka
    OPTOMECHATRONIC SYSTEMS CONTROL III, 6719, 2007年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Robust focusing by orientation code matching and its application to depth reconstruction
    Yuan Li, Isao Ohmura, Hidenori Takauji, Shun'ichi Kaneko, Takayuki Tanaka
    EIGHT INTERNATIONAL CONFERENCE ON QUALITY CONTROL BY ARTIFICIAL VISION, 6356, 2007年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Distortion and scale estimation for robust tag registration - art. no. 671804
    Io Nakayama, Hidenori Takauji, Shun'ichi Kaneko, Takayuki Tanaka
    OPTOMECHATRONIC COMPUTER-VISION SYSTEMS II, 6718, 71804, 71804, 2007年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Robot contest competition, an approach to venture mind education
    Takashi Kawamura, Takayuki Tanaka
    2007 IEEE INTERNATIONAL CONFERENCE ON MECHATRONICS, 83, +, 2007年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Matching-based focusing by Orientation Code Matching and depth reconstruction
    Yuan Li, Hidenori Takauji, Shunichi Kaneko, Takayuki Tanaka, Isao Ohmura
    OPTOMECHATRONIC COMPUTER-VISION SYSTEMS II, 6718, 2007年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • EMGセンサスーツのためのロバスト関節トルク推定と高速較正
    鈴木 洋輔, 田中 孝之, フェン マリア Q., 諸麦 俊司
    計測自動制御学会論文集, 42, 8, 982, 990, 計測自動制御学会, 2006年08月31日
    日本語, 研究論文(学術雑誌)
  • 周期入力制御を用いた準受動的歩行ロボットの斜度・外乱に対するロバスト性
    梅枝 真守, 梶原 秀一, 田中 孝之, 金子 俊一
    計測自動制御学会論文集, 42, 8, 974, 981, 計測自動制御学会, 2006年08月31日
    日本語
  • 多角形マーカを用いたカメラ1台でのモーションキャプチャと人間の3次元動作計測
    高橋 秀典, 田中 孝之, 金子 俊一
    計測自動制御学会論文集, 42, 7, 719, 726, 計測自動制御学会, 2006年07月31日
    日本語, 研究論文(学術雑誌)
  • 方向符号化密度に基づいたスケーラブル画像探索
    高氏 秀則, 金子 俊一, 田中 孝之
    精密工学会誌論文集 = Journal of the Japan Society for Precision Engineering Contributed Papers, 72, 4, 487, 493, 公益社団法人精密工学会, 2006年04月05日
    日本語, This paper aims to propose a fast image searching method from environmental observation images even in the presence of scale changes. A new scheme has been proposed for extracting feature areas based on a robust image registration algorithm called Orientation code matching. Extracted areas are stored as template images and utilized in image searching. As the number of template images grows, the searching cost becomes a serious problem. Additionally, changes of viewing positions cause scale change of an image and matching failure. In our scheme, richness in features is important for feature area generation and the entropy is used to evaluate the variety of edge directions which are stable to scale change of the image. This characteristic contributes to limitation of searching area and reduction in calculation costs. Scaling factors are estimated by orientation code density which means the percentage of effective codes in fixed size areas. An estimated scaling factor is applied to matching a scale of template images to one of observation images. Some experiments are performed in order to compare computation time and verify effectiveness of estimated scaling factor using real scenes.
  • 走査型上限推定を用いた高効率2値テンプレートマッチングアルゴリズム
    前孝宏, 金子俊一, 田中孝之
    精密工学会誌(CD-ROM), 72, 4, 481, 486, 2006年04月05日
    日本語
  • 方向符号化密度に基づいたスケーラブル画像探索
    高氏秀則, 金子俊一, 田中孝之
    精密工学会誌(CD-ROM), 72, 4, 487, 493, 2006年04月05日
    日本語
  • 走査型上限推定を用いた高効率2値テンプレートマッチングアルゴリズム
    前 孝宏, 金子 俊一, 田中 孝之
    精密工学会誌論文集 = Journal of the Japan Society for Precision Engineering Contributed Papers, 72, 4, 481, 486, 公益社団法人精密工学会, 2006年04月05日
    日本語, An efficient algorithm for binary template matching is proposed. For efficient search, object images to be checked is divided into two regions: R-region and P-region. In R-region, an upper limit of correlation coefficients can be derived as an interval estimation based on mathematical analysis of correlations of the object image and a pivot image. In P-region, another interval estimation is formalized based on the number of white and black pixels in a template and the object image. By use of these interval estimations, a scanning-type upper limit estimation of correlation coefficients can be formalized for the efficient search algorithm. Experiments show the effectiveness and efficiency of the proposed search algorithm.
  • Autonomous and robust structuring of real environment by searching complex regions               
    Hidenori Takauji, Io Nakayama, Shunichi Kaneko, Takayuki Tanaka
    International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, 36, International Society for Photogrammetry and Remote Sensing, 2006年
    英語, 研究論文(国際会議プロシーディングス)
  • Extraction and tracking of orientation coded features being robust against illumination changes
    Yukiyasu Domae, Hidenori Takauji, Henrik Stier, Shunichi Kaneko, Takayuki Tanaka
    International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, 36, 2006年
    研究論文(国際会議プロシーディングス)
  • A sensor to measure hardness of human tissue
    Shunji Moromugi, Shinichi Kumano, Mitsuaki Ueda, Takakazu Ishimatsu, Maria Q. Feng, Takayuki Tanaka
    2006 IEEE SENSORS, VOLS 1-3, 388, +, 2006年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Using orientation code matching for robustly sensing real velocity of agrimotors
    Kazuya Nakahara, Hidenori Takauji, Shun'ichi Kaneko, Takayuki Tanaka, Masashi Shimizu, Yukio Miyashita
    OPTOMECHATRONIC SENSORS, INSTRUMENTATION, AND COMPUTER-VISION SYSTEMS, 6375, 2006年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Local retouching of degraded images by histogram-based similarity evaluation
    Lin Fu, Shun'ichi Kaneko, Takayuki Tanaka
    OPTOMECHATRONIC SENSORS, INSTRUMENTATION, AND COMPUTER-VISION SYSTEMS, 6375, 2006年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Expansion of Measuring Range of Binocular Stereovision System Based On Mono-MoCap
    Hidenori Takahashi, Takayuki Tanaka, Shun'ichi Kaneko
    OPTOMECHATRONIC SENSORS, INSTRUMENTATION, AND COMPUTER-VISION SYSTEMS, 6375, 2006年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Integral Ultrasonic Muscle Activity Sensor for Detecting Human Motion
    T. Koyama, T. Tanaka, S. Kaneko, S. Moromugi, M.Q. Feng
    2005 IEEE International Conference on Systems, Man and Cybernetics, 2, 1669, 1674, IEEE, 2005年10月, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Soft Sensor Suits as Man-Machine Interface for Wearable Power Amplifier
    Y. Suzuki, S. Moromugi, T. Tanaka, S. Kaneko, M.Q. Feng
    2005 IEEE International Conference on Systems, Man and Cybernetics, 2, 1680, 1685, IEEE, 2005年10月, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • 未知環境におけるロバストタギング
    高氏 秀則, 金子 俊一, 田中 孝之
    電気学会論文誌. C, 電子・情報・システム部門誌 = The transactions of the Institute of Electrical Engineers of Japan. C, A publication of Electronics, Information and System Society, 125, 6, 926, 934, 一般社団法人 電気学会, 2005年06月01日
    日本語, This paper aims to propose a new scheme for robust tagging for landmark definition in unknown circumstance using some qualitative evaluations based on Orientation code representation and matching which has been proposed for robust image registration even in the presence of change in illumination and occlusion. Necessary characteristics for effective tags: richness, similarity, and uniqueness, are considered in order to design an algorithm for tag detection. These qualitative considerations can be utilized to design simple and robust algorithm for tag definition in combination with the robust image registration algorithm.
  • Duplex ultrasonic muscle activity sensor
    Yoichiro Tsutsui, Takayuki Tanaka, Shun'ichi Kaneko, Maria Q. Feng
    Proceedings of IEEE Sensors, 2005, 310, 313, 2005年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Efficient template matching algorithm based on interval estimations on correlation
    Takahiro Mae, Shun'ichi Kaneko, Takayuki Tanaka
    Proceedings of SPIE - The International Society for Optical Engineering, 6051, 2005年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Application of successive test feature classifier to dynamic recognition problems
    Yukinobu Sakata, Shun'ichi Kaneko, Takayuki Tanaka
    Proceedings of SPIE - The International Society for Optical Engineering, 6051, 2005年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Joint torque and angle estimation by using ultrasonic muscle activity sensor
    Yoichiro Tsutsui, Takayuki Tanaka, Shun'ichi Kaneko, Maria Q. Feng
    Proceedings of SPIE - The International Society for Optical Engineering, 6049, 2005年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Self maintenance robot system using physical information learning for mobile robot with visual sensors
    Naohiro Sekiguchi, Takayuki Tanaka, Shun'ichi Kaneko
    Proceedings of SPIE - The International Society for Optical Engineering, 6052, 2005年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Robust tracking based on orientation code matching under irregular conditions
    Yukiyasu Domae, Shun'ichi Kaneko, Takayuki Tanaka
    Proceedings of SPIE - The International Society for Optical Engineering, 6051, 2005年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • A fast tag searching method based on orientation code entropy and density
    Hidenori Takauji, Shun'ichi Kaneko, Takayuki Tanaka
    Proceedings of SPIE - The International Society for Optical Engineering, 6051, 2005年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Fast and robust rotation-invariant search by using orientation code difference histogram
    Takahiro Urano, Shun'ichi Kaneko, Takayuki Tanaka
    Proceedings of SPIE - The International Society for Optical Engineering, 6051, 2005年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Motion capture for human motion measuring by using single camera with triangle markers
    Hidenori Takahashi, Takayuki Tanaka, Shun'ichi Kaneko
    Proceedings of SPIE - The International Society for Optical Engineering, 6049, 2005年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Auto-calibration system, of EMG sensor suit
    Yousuke Suzuki, Takayuki Tanaka, Maria Q. Feng
    Proceedings of SPIE - The International Society for Optical Engineering, 6049, 2005年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • MEMS and fiber optics sensor-based wearable interface for medical applications
    Y Fukuda, T Tanaka, MQ Feng, T Ishimatsu
    2005 IEEE SENSORS, VOLS 1 AND 2, 814, 817, 2005年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Learning of body sense and body image for mobile robot with visual sensors
    N Sekiguchi, T Tanaka, S Kaneko
    2005 IEEE/ASME INTERNATIONAL CONFERENCE ON ADVANCED INTELLIGENT MECHATRONICS, VOLS 1 AND 2, 2005 Vol.2, 1269, 1274, 2005年
    英語, 研究論文(国際会議プロシーディングス)
  • Muscle Stiffness Sensor to Control Assisting Device for the Disabled               
    Shunji Moromugi, Yasuhiro Koujina, Seigo Ariki, Akira Okamoto, Takayuki Tanaka, Maria Q. Feng, Takakazu Ishimatsu
    Journal of Artificial Life and Robotics, 8, 1, 42, 45, 2004年01月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Torque Estimation Using Ultrasonic Muscle Activity Sensor(Power Assist and Nursing 2,Session: TP1-C)
    Tsutsui Yoichiro, Tanaka Takayuki, Suzuki Yosuke, Feng Maria Q.
    The Abstracts of the international conference on advanced mechatronics : toward evolutionary fusion of IT and mechatronics : ICAM, 2004, 48, 48, 一般社団法人日本機械学会, 2004年
    英語
  • Smart power suit with variable stiffness mechanism
    T Hayashi, T Tanaka, MQ Feng
    RO-MAN 2004: 13TH IEEE INTERNATIONAL WORKSHOP ON ROBOT AND HUMAN INTERACTIVE COMMUNICATION, PROCEEDINGS, 637, 642, 2004年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Using orientation code matching for robust landmark definition and verification
    H Takauji, S Kaneko, T Tanaka
    MACHINE VISION AND ITS OPTOMECHATRONIC APPLICATIONS, 5603, 71, 80, 2004年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • 介護用装着型ヒューマンアシストロボットの開発とアシスト効果向上のための制御系設計 (特集「ウェアラブル・フルードアクチュエータの実現性」)
    小山 猛, 田中 孝之
    フルードパワーシステム, 34, 5, 128, 133, 日本フルードパワーシステム学会, 2003年09月
    日本語
  • Fibrous Optical Actuator Containing Photochromic Molecules               
    Takayuki Tanaka, Naoto Yamagishi, Ryujiro Mitsui, Takashi Kawamura
    Journal of Robotics and Mechatronics, 15, 2, 172, 177, 2003年04月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Soft Power Suit for Knee Motion Assistance               
    S. Moromugi, Y. Koujina, S. Ariki, T. Tanaka, M. Q. Feng, T.Ishimatsu
    International Journal of Human-friendly Welfare Robotic Systems, 4, 4, 13, 19, 2003年, [査読有り]
    英語, 研究論文(学術雑誌)
  • Interaction among human, machine and patient with work state transition
    T Koyama, T Tanaka, K Tanaka, MQ Feng
    2003 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1-3, PROCEEDINGS, 2362, 2367, 2003年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Ultrasonic sensor disk for detecting muscular force
    T Tanaka, S Hori, R Yamaguchi, MQ Feng, S Moromugi
    RO-MAN 2003: 12TH IEEE INTERNATIONAL WORKSHOP ON ROBOT AND HUMAN INTERACTIVE COMMUNICATION, PROCEEDINGS, 291, 295, 2003年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • 力触覚インタフェースにおける操作感の主観評価
    金森 直希, 田中 孝之, 田中 一男
    日本機械学会論文集. C編, 68, 669, 1467, 1473, 一般社団法人日本機械学会, 2002年05月25日
    日本語, This paper addresses subjective evaluation for operating feeling in a haptic interface. The NASA-TLX method, which is mental workload index analysis, is employed to investigate operating feeling for various impedance parameters and task parameters. The result shows the existence of three patterns of human operation. The patterns correspond to viscosity-based operation, restoring force-based operation and inertia-based operation, respectively. We verify the existence of three patterns by analyzing force sensor data. Furthermore, the verification of three-pattern classification is also investigated by the semantic differential method and factor analysis.
  • Principle of Stable Running of An Unicycle Robot, Journal of Robotics and Mechatronics               
    Takayuki Tanaka, Hisanobu Suzuki, Kazuo Tanaka
    Journal of Robotics and Mechatronics, 14, 1, 37, 45, 2002年02月, [査読有り]
  • Evaluation method of man-machine system based on muscular characteristic
    Takeshi Koyama, Takayuki Tanaka, Kazuo Tanaka, Maria Q. Feng
    Proceedings - IEEE International Workshop on Robot and Human Interactive Communication, 71, 76, 2002年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Rights to Intellectual Property on R&D Results Conducted at University               
    Kazuo Yamafuji, Takayuki Tanaka
    Journal of Robotics and Mechatronics, 13, 1, 101, 106, 2001年, [査読有り]
  • New Biological Real-time Pattern Extraction Emulating Fly's Behavior               
    Takayuki Tanaka, Kazuo Yamafuji, Yasunori Yamazaki
    Journal of Robotics and Mechatronics, 13, 1, 68, 73, 2001年, [査読有り]
  • Mechanical modeling and control of wearable nursing care robot
    T Koyama, MQ Feng, T Tanaka
    INTEGRATION OF ASSISTIVE TECHNOLOGY IN THE INFORMATION AGE, 9, 227, 234, 2001年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Principle of Cat-Turn Motion and Realization of Cat-Turning by a Robot with Vertebrate-Type Backbones Driven by Rubber Actuators               
    International Journal of Mechanics and Control, 1, 1, 19, 34, 2001年
  • 介護用装着型ヒューマン・アシスト装置に関する研究(第1報,コンセプト,システム設計と実機の開発)
    小山 猛, 山藤 和男, 田中 孝之
    日本機械学会論文集. C編, 66, 651, 3679, 3684, 一般社団法人日本機械学会, 2000年11月25日
    日本語, In order to care bed-bound and disabled people without charging both patients and nurses with physical and mental stress, we have developed a robotic prototype of a human-assisting system, called the Human-Assisting RObot (HARO). It is requested that patients enjoy their daily life and cares without giving physical and mental burdens to nursing people. There are two ways to care the patients. One is to conduct the cares by an intelligent robot autonomously, another is to be performed by a human-assisting system. Since we believe it is necessary to combine humman's cognitive capability and robot's power, we have developed a robotic prototype of a human-assisting system as a wearable power assisting system including human's intention, skill and cognition. In this paper, the concepts based on the practical experiences of care, system design, developed robot and the exprimental results are described.
  • Wearable Human Assisting Robot for Nursing Use               
    Takeshi Koyama, Maria Q. Feng, Takayuki Tanaka
    Machine Intelligence and Robotic Control, 2, 4, 163, 168, 2000年, [査読有り]
    英語, 研究論文(学術雑誌)
  • Development of a Robotic System Which Assists Unmanned Production Based on Cooperation between Off-line Robots and On-line Robots (3rd Report: Development of an off-line robot, autonomous navigation and detection of faulty workpieces in a vibrating par・・・
    H.Z. Yang, K. Yamafuji, T. Tanaka, S. Moromugi
    International Journal of Advanced Manufacturing Technology, 16, 8, 582, 590, Springer-Verlag London Ltd., 2000年, [査読有り]
    英語, 研究論文(学術雑誌)
  • New biological real-time pattern extraction method emulating fly's behavior
    Takayuki Tanaka, Kazuo Yamafuji
    IECON Proceedings (Industrial Electronics Conference), 1, 1237, 1242, IEEE Computer Society, 2000年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Improvement of Maneuverability of the Man-Machine System for Wearable Nursing Robots               
    Satoki Morishita, Takayuki Tanaka, Kazuo Yamafuji, Naoki Kanamori
    Journal of Robotics and Mechatronics, 11, 6, 461, 467, 1999年12月, [査読有り]
    英語, 研究論文(学術雑誌)
  • サービス用知能移動ロボットの開発(第3報, ハエの行動に倣った生物的実時間画像抽出法とハンドアイシステムへの応用)
    田中 孝之, 大井 純司, 山藤 和男
    日本機械学会論文集. C編, 65, 629, 146, 153, 一般社団法人日本機械学会, 1999年01月25日
    日本語, We have developing an intelligent mobile robot for service use which can be utilized as a "secretary or helper robot" during the day and "security guard or maintenance including floor-cleaning robot" at night in office buildings. When the service robot works or moves autonomously in an enviromnent including human beings, it should be able to recognize its environment on real time. In this paper, new biological object extraction method is developed. In order to extract objects from a frame image taken by a camera, many Virtual Flies (VFs) scattered in the CRT display are utilized. An individual VF composed of 3×3 pixels can freely fly in the display. Fundamental object extraction method is to detect objects just like flies sensing foods and swarming around them. Methodology and experimental results together with its application of Hand-Eye system using a robot manipulator are described in detail.
  • サービス用知能移動ロボットの開発 (第2報, 視覚センサを用いた自己位置認識システム)
    田中 孝之, 山藤 和男, 渡邊 浩樹, 片江 毅
    日本機械学会論文集. C編, 64, 628, 4702, 4709, 一般社団法人日本機械学会, 1998年12月
    日本語, We have developing an intelligent mobile robot for service use which can be utilized as a "secretary or helper robot" in day time and "security guard or maintenance including floor-cleaning robot" in night in office buildings. Since the service robot works or moves autonomously living together with human being in office environments, it must be able to recognize its absolute position and environment. In this paper, we proposed two types of self positioning method based on a visual sensor. One is the global self positioning (GSP) which is realized by recognition of a room number plate. The another is Iocal self positioning (LSP) in which the position is calculated by the relation between the robot and three lighting landmarks, such as two exit lamps and a fire hydrant lamp in corridors. Experimental results show that proposed methods are very effective in self positioning for the autonomous mobile robot.
  • Unattended Production Based on Cooperation between Offline and Online Robot               
    Journal of Robotics and Mechatronics, 10, 6, 538, 541, 1998年
  • Soft computing algorithms for intelligent control of a mobile robot, Part 2: Path planning, navigation and technology operations               
    T. Tanaka, J. Ohwi, L.V. Litvintseva, K. Yamafuji, S.V. Ulyanov
    Soft Computing, 1, 2, 99, 106, 1997年06月, [査読有り]
    英語, 研究論文(学術雑誌)
  • Soft computing algorithms for intelligent control of a mobile robot, Part 1: Direct human-robot communications and managing system for cooperative control               
    T. Tanaka, J. Ohwi, L.V. Litvintseva, K. Yamafuji, S.V. Ulyanov
    Soft Computing, 1, 2, 88, 98, 1997年06月, [査読有り]
    英語, 研究論文(学術雑誌)
  • サービス用知能移動ロボットの開発 (第1報,環境適応型自筆移動制御システム)
    田中 孝之, 山藤 和男, 高橋 秀典
    日本機械学会論文集. C編, 63, 605, 211, 218, 一般社団法人日本機械学会, 1997年01月25日
    日本語, We have developed an intelligent mobile robot for service use, which can be utilized as a "secretary-or helper-robot" by daytime and "robot for security guard or maintenance including floor cleaning" by night in office buildings. An autonomous locomotion control system of this service robot is organized by four functions, i.e., path planning, recognition of absolute position, locomotion control and learning navigation controller. In this paper, in order to move more appropriately and smoothly in environments including human beings and obstacles, we have examined the learning function by means of fuzzy neural network which tunes up membership functions for fuzzy locomotion control. By this method, the intelligent robot can learn the moving area autonomously. Results obtained by computer simulation show that the proposed method is very useful for autonomous locomotion control of the intelligent robot.
  • Intelligent Control of a Mobile Robot for Service Use in Office Buildings and Its Soft Computing Algorithms               
    Takayuki Tanaka, Junji Ohwi, Ludmila V. Litvintseva, Kazuo Yamafuji, Sergei V. Ulyanov
    Journal of Robotics and Mechatronics, 8, 6, 538, 554, 1996年12月, [査読有り]
    英語, 研究論文(学術雑誌)
  • A mobile robot for service use: Behaviour simulation system and intelligent control.
    T Tanaka, J Ohwi, LV Litvintseva, K Yamafuji, SV Ulyanov, Kurawaki, I
    IROS '97 - PROCEEDINGS OF THE 1997 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOT AND SYSTEMS: INNOVATIVE ROBOTICS FOR REAL-WORLD APPLICATIONS, VOLS 1-3, 366, 371, 1996年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Intelligent control of technology operations robot of service use with manipulator
    T Tanaka, Y Kojima, J Ohwi, K Yamafuji, SV Ulyanov
    RO-MAN '96 - 5TH IEEE INTERNATIONAL WORKSHOP ON ROBOT AND HUMAN COMMUNICATION, PROCEEDINGS, 170, 176, 1996年, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Intelligent Control of Mobile Robot for Service Use               
    International Journal of Software and Systems, 3, 35, 43, 1996年
  • Intelligent fuzzy motion control of mobile robot for service use
    S.V. Ulyanov, K. Yamafuji, K. Miyagawa, T. Tanaka, T. Fukuda
    Proceedings 1995 IEEE/RSJ International Conference on Intelligent Robots and Systems. Human Robot Interaction and Cooperative Robots, IEEE Comput. Soc. Press, 1995年08月, [査読有り]
    研究論文(国際会議プロシーディングス)

その他活動・業績

書籍等出版物

  • ロボット工学ハンドブック
    日本ロボット学会
    コロナ社, 2023年03月, 9784339046793, ix, 1072p, 日本語, [分担執筆]
  • Humanoid Robotics: A Reference               
    Eiichi Yoshida, Ko Ayusawa, Yumeko Imamura, Takayuki Tanaka, Toward New Humanoid Applications: Wearable Device Evaluation Through Human Motion Reproduction
    Springer, 2018年08月, 9400760450, 英語, This chapter addresses a new application of humanoid robot for evaluation of wearable assistive devices. One of the issues for diffusion of assistive devices that has been developed recently is its objective and qualitative evaluation to validate its assistive effects. Human subject experiments that have frequently been used have several drawbacks such as heavy ethical procedures, repeatability, and subjectivity coming from tests with questionnaires. A humanoid robot with humanlike structure and shape has potential to be used as an “active mannequin.” By reproducing human motions based on a technique called retargeting, a humanoid robot can test wearable devices instead of a human. It has advantages as it can repeat the same motions to test the product under the same conditions, and it has no ethical risks. The largest advantage is its capacity of quantitative evaluation by measuring joint torques, which allows direct validation of supportive torque generated by the device. By taking an example of a supportive wear “Smart Suit Lite” supporting the user’s lower back by elastic bands, we will overview the evaluation framework of humanoid-based assistive device evaluation, including human motion retargeting, experimental device evaluation with humanoid HRP-4C, and validation of the accuracy of the results using an identification method., [分担執筆]
  • ロボット制御学ハンドブック
    田中孝之, 諸麦俊司, 松野 文俊, 大須賀 公一, 松原 仁, 野田 五十樹, 稲見 昌彦, センサ・アクチュエータとモデリング
    近代科学社, 2017年12月, 476490473X, 1024, [分担執筆]
  • 人工知能学大事典
    田中孝之, 人工知能学会, JSAI, パワーアシストスーツ
    共立出版, 2017年07月, 4320124200, 1579, 1024-1025, 日本語, 事典・辞書, [分担執筆]
  • 生体データ活用の最前線~スマートセンシングによる生体情報計測とその応用~
    田中孝之, 日下 聖, 土谷圭央, 板生 清, 作業者の腰への負担計測と軽減に向けたセンサ内蔵ウェアの開発
    サイエンス&テクノロジー株式会社, 2017年04月, 4864281513, 519, [分担執筆]
  • 福祉技術ハンドブック: 健康な暮らしを支えるために
    産業技術研究所ヒューマンライフテクノロジー研究部門, パワードスーツ
    朝倉書店, 2013年10月, 4254201524, 506, [分担執筆]
  • 東日本大震災合同調査報告
    東日本大震災合同調査報告書編集委員会
    日本機械学会, 丸善出版 (発売), 2013年, 9784888982320, 178-180, 日本語
  • 独創的ロボットの研究開発 : 夢のあるロボットと役に立つロボット
    山藤 和男, 田中 孝之
    養賢堂, 2002年, 4842503319, 日本語

講演・口頭発表等

担当経験のある科目_授業

  • 電気制御システム実験               
    北海道大学
  • 電気制御システム演習               
    北海道大学
  • ヒューマンセントリックシステム特論               
    北海道大学
  • 一般教育演習               
    北海道大学
  • システム制御情報学特論               
    北海道大学
  • 計測工学               
    電気通信大学
  • 物理学               
    電気通信大学,東京農工大学
  • ロボティクス               
    北海道大学

所属学協会

  • IEEE               
  • 精密工学会               
  • 計測自動制御学会               
  • 日本機械学会               
  • 日本ロボット学会               
  • IEEE               
  • Japan Society of Precision Engineering               
  • The Society of Instrument and Control Engineering               
  • Japan Society of Mechanical Engineering               
  • Robotics Society of Japan               

Works(作品等)

  • スマートスーツ研究会               
    2007年 - 2011年
  • 軽労化研究会               
    2011年

共同研究・競争的資金等の研究課題

  • ウェアラブル運動拡張デバイスによる運動獲得過程の可視化と最適化
    科学研究費助成事業
    2022年04月 - 2025年03月
    田中 孝之, 村井 昭彦
    日本学術振興会, 基盤研究(B), 北海道大学, 研究代表者, 22H01436
  • 身体機能を向上させるソフトエグゾスケルトンの開発とスポーツの拡張
    科学研究費助成事業 基盤研究(B)
    2018年04月01日 - 2021年03月31日
    栗田 雄一, 田中 孝之, 三木 則尚
    2018年度は,(1)身体負荷計測,努力感計測,心理負荷計測を含む身体・心理負荷のリアルタイム計測技術の開発,ならびに(2)負担規範のアシスト力の設計,ソフトアクチュエータを利用した運動アシストスーツの開発を含むソフトエグゾスケルトンスーツの開発を主に実施した.(1)については,筋電計測を活用した腰部身体負荷計測のプレ実験を行った.また,電極を用いた心理負荷計測を行うためのウェアラブルセンサ技術の開発を行った.これら開発は,研究分担者と連携して実施している.また運動アシストにおける運動主体感の変化を調べるために,空気圧人工筋による運動アシストのタイミングを早めたり遅らせたりしたときに,着用者が自分自身で体を動かしたかように感じるか(すなわち,運動主体感)がどのように変化するかを調査した.これらの結果は,運動支援デバイスのアシストタイミングを制御する際の設計指針に利用可能な知見である.(2)については,空気圧人工筋を利用したソフトなエグゾスケルトン・スーツのプロトタイプを開発した.これは,複数本の人工筋を両面テープつきのサポーターを利用することで人体の幅広い範囲に取り付けることが可能である.また,マイクロコンピュータ,小型空気圧源,小型電磁弁,バッテリーの組み合わせにより,比較的小型・軽量な構成で着用可能である.開発したスーツを利用して,スポーツ体験を拡張することを目的とした実験を実施した.レーザータグゲームにおける力フィードバックに応用したところ,着用者が激しく動く環境でも利用可能であることを確認した.
    日本学術振興会, 基盤研究(B), 広島大学, 18H03276
  • 深層筋肉の運動機能・感覚機能トレーニングのための運動知覚統合アシストシステム
    科学研究費助成事業 基盤研究(B)
    2017年04月01日 - 2020年03月31日
    田中 孝之, 島谷 康司, 栗田 雄一
    ウェアラブル運動知覚統合システムを開発し,運動機能,感覚機能の向上に対して,その効果を評価することを目的として,次の課題に取り組み,それぞれ成果を上げた.
    (1) 筋シナジーに基づく間接的運動教示インタフェース:骨盤底筋群と腹横筋の筋シナジー関係に基づいて,腹横筋の収縮活動をモニターに表示し,骨盤底筋群の活動として知覚させて,指示した筋収縮量に随意的に骨盤底筋群を収縮させる間接的運動教示インタフェースを構築し,実験的に有効性を確認した.本手法によるトレーニングにより,骨盤底筋群の運動知覚が容易になると共に,骨盤底筋群と腹横筋との筋シナジー関係が強化される新たな知見が得られた.本成果を国際会議,国内講演会にて発表した.
    (2) 力触覚刺激によるウェアラブル運動知覚インタフェース:上記(1)の視覚によるバイオフィードバックトレーニングの簡略化を目指し,腹横筋に突起物を押し付け,筋収縮に伴う筋硬さ変化を力触覚により知覚するウェアラブル間接的運動教示インタフェースを開発した.
    (3) 運動教示を取り入れたトレーニングプログラム設計:骨盤形状を2方向のレントゲン画像から計測し,骨盤姿勢を歩容から推定する,骨盤形状・姿勢の個人同定法を構築した.男女被験者の骨盤をMRI撮像して,提案手法の有効性を確認した.この成果を英文学術誌に掲載している.さらに,姿勢変化時の骨盤底筋群の活動を男女被験者で計測し,骨盤形状を個人同定した筋骨格動力学モデルで算出した筋活動と比較し,骨盤底筋群トレーニングのための最適姿勢の算出が可能であることを示し,個別のトレーニングプログラム設計の基礎構築を行った.
    日本学術振興会, 基盤研究(B), 北海道大学, 17H03195
  • 自動車運転手危険回避支援用振動警告インタフェースのための振動・距離感覚モデル
    科学研究費助成事業 基盤研究(C)
    2012年04月01日 - 2015年03月31日
    田中 孝之
    自動車運転手の危険回避支援を目的として,振動刺激によって前方車両や障害物との距離情報を提示する振動インタフェースのための基盤技術を研究開発した.
    まず,振動感覚による適切な距離感覚提示を実現するために,走行速度を考慮した距離感覚と振動感覚をモデル化した.視覚情報では錯覚が生じるような環境においても,振動刺激によって,正確な距離感覚を提供できることを確認した.つぎに,前方車両への接近等,相対移動物体との距離感覚提示のための振動感覚ダイナミクスモデルを構築した.さらに,距離感覚と相対速度感覚の感覚順応モデルの構築と補正手法を構築し,より的確な情報伝達を可能にした.
    日本学術振興会, 基盤研究(C), 北海道大学, 研究代表者, 競争的資金, 24500139
  • 可変構造システムと筋活動センシングによる高アシスト効率装着型増力装置の開発
    科学研究費助成事業 若手研究(A)
    2006年 - 2007年
    田中 孝之
    装着者にあわせて増力装置の構造を最適化することでアシスト力を効率良く装着者に伝達し,アシスト効率を向上するためのアクチュエーション技術を開発する.2種類の可変構造システムを開発し,装着者の体格に対する増力装置のサイズの不適切さ,および動作中の増力装置のずれに起因するアシスト効率悪化の問題を解消した.また生体センサを用いて増力装置のずれを検出するセンサシステムを開発した.
    まず,アクチュエータユニットをスーツ要所に配置したジグに取り付けることで固定し,ジグとスーツを介して装着者にアシスト力を伝達する.各ジグ間のアクチュエータユニットのワイヤ長を手動調整することで,装着者の体格に増力装置を合わせる静的な可変構造システムを開発した.
    アレイ状EMGセンサを用いて,神経支配帯とセンサ情報との関係よりスーツのずれを計測するセンサシステムを開発した.ここで増力装置のずれがアシスト効率に大きく影響する.そこで,アクチュエータユニット取り付け部に装着者の体表面に密着するようにEMGセンサをアレイ状に取り付け,ホルダのずれを実時間で計測することができた.また,超音波による筋活動センシングによる動作計測システムを開発した.テスト特徴分類器に基づいて動作認識法を開発し,生体を透過した超音波から関節角度・トルクを認識する手法を確立した.
    最後に,腰と膝を同時アシスト可能な増力装置を開発した.ここでは,アクチュエータユニットを腰部に2つ取り付け,腰と肩および腰と膝とをアクチュエータユニットで結び,腰と膝に補助力が得られるようにした.アクチュエータユニットのずれによってアシスト効率が低下することをシミュレーションと実験により確認した.さらに,2つのアクチュエータユニット間の位置を動的に制御することで,ずれを抑制する制御系を開発し,実験によってその効果を示した.
    日本学術振興会, 若手研究(A), 北海道大学, 研究代表者, 競争的資金, 18686021
  • 葡萄園除草ロボットの研究開発               
    2006年
    競争的資金
  • ダイナミック可変構造機械系の制御法の開発と可変生物型ロボットへの応用
    科学研究費助成事業 基盤研究(C)
    2003年 - 2005年
    田中 一男, 田中 孝之
    1 可変構造機械系のシステム記述法の開発
    可変構造を有する機械系システムの記述方法を開発した。モデル作成には、sector nonlinearityの概念を利用して構造に応じた複数の非線形モデルを作成し、構造特性などを考慮してこれらの非線形モデルをスイッチングする手法を提案した。
    2 可変構造機械系に対する制御手法の開発
    1で開発した可変構造システムに対して有効な制御手法を開発した。開発した制御手法では、
    (1)構造の切り替えにおいてエネルギーが保存されるシステム
    (2)構造の切り替えにおいて状態変数の値が保存されるシステム
    に対する安定化制御器の設計条件を導出した。
    3 鳥ロボットの開発
    鳥ロボットを開発し、視覚センサを搭載した。しかし、羽ばたきの振動のため、実際の飛行時には搭載した視覚センサからの画像情報にかなりの乱れが生じてしまった。そこで、一点支持の状態で、移動目標物に追従するような方向制御実験を行い、その有効性を示した。
    4 可変構造機械系設計法の高度化
    2の手法を鳥ロボット飛行制御へ適用するために、可変構造機械系のサブシステム切り替えの前後において、自由度や拘束条件が変化した場合にも対応可能な制御系設計条件を導いた。さらに、この成果をもとに、より実用的な可変構造機械系の設計法を開発した。
    5 鳥ロボットの揚力安定化実験
    鳥ロボットの揚力ダイナミクスモデルを同定し、制御系設計を行った。振り下げ時に速度を大きくしなるべく大きい上昇力を得るように、しかも、振り上げ時にゆっくりと振り上げて下降力をなるべく小さく抑えるような翼の目標軌道を生成し、それに追従させるような制御系設計を行った。揚力安定化実験によりその有効性を示した。
    日本学術振興会, 基盤研究(C), 電気通信大学, 15560217
  • セミアクティブアシストに基づく筋力補助装置スマートスーツ               
    共同研究
    2004年
    競争的資金
  • Smart Suit: Power Assist Device based on Semi-active Assist               
    Cooperative Research
    2004年
    競争的資金
  • ユニバーサルデザインに基づく携帯型障害物検出デバイス               
    2003年
    競争的資金
  • Portable Obstacle Detector based on Universal Design               
    2003年
    競争的資金
  • 簡易装着型ヒューマンインタフェース「センサスーツ」               
    2002年
    競争的資金
  • Wearable Human Interface "Sensor Suit"               
    2002年
    競争的資金
  • 対話型ペットロボットの開発
    科学研究費助成事業 奨励研究(A)
    1998年 - 1999年
    田中 孝之
    開発する対話型ペットロボットのシステムは,センサ系,認識系,処理系及び表出系に大別される.このうち,平成10年度は本ペットロボットの表出系となるぬいぐるみ型ハードウェアと処理系となる生物の神経回路ネットワークを模した対話型アルゴリズムの開発を行った.
    平成11年度は,まずロボットシステムに視覚センサとしてCCDカメラを搭載し,対話の相手との相対関係および周辺情報を視覚情報により獲得するセンサ系・認識系を開発し,前年度の成果とあわせて統合的なプロトタイプシステムを開発した.
    次に,人間の処理が本能と理性によるもので,その表出から内部心理状態を推測することが困難であるため,比較的本能的な処理・表出が行われているペット動物を対話の相手として用いることとした.具体的な対話としてペット動物との「遊び」を行うこととし,開発した対話型アルゴリズムによって人間とペット動物が遊ぶことに近い遊びができることを確認した.
    以上の成果から,目的とした対話型ロボットのプロトタイプを開発し,生物との対話によりアルゴリズムの有効性を実証した.今後の課題として,人間の表出のように複雑な情報から,相手の内部心理状態を推測できるようなシステムの開発が望まれる.
    日本学術振興会, 奨励研究(A), 電気通信大学, 研究代表者, 競争的資金, 10750186

産業財産権

  • 負荷検出装置、情報処理装置、負荷検出方法、および負荷検出プログラム               
    特許権, 田中 孝之, 日下 聖, 土谷 圭央, 安田 雅彦, 根岸 易世, 古川 治, 根岸 恭子, 根橋 秀文, 安東 繁宏
    特願2018-046004, 2018年03月13日
    特開2019-154817, 2019年09月19日
    特許6586700
  • ウェアラブル装置、情報管理システム、駆動方法、およびアプリケーションプログラム               
    特許権, 田中 孝之, 岡本 仁志, 日下 聖, 伊藤 隆太郎
    特願2017-143128, 2017年07月24日
    特開2019-023368, 2019年02月14日
  • 計測装置、計測システム、計測方法、プログラムおよび携帯型端末               
    特許権, 田中 孝之, 金子 俊一, 日下 聖, 和田 恭坪, 山本 雅也
    特願2017-141371, 2017年07月20日
    特開2019-017878, 2019年02月07日
  • 補助スーツ               
    特許権, 田中 孝之, 栗田 雄一
    特願2015-218662, 2015年11月06日
    特開2017-089032, 2017年05月25日
    特許6617519
  • 保護装置並びに保護装置の制御方法及び制御プログラム               
    特許権, 田中 孝之, 酒井 裕司, 熊倉 祐一郎, 鈴木 善人
    特願2015-195253, 2015年09月30日
    特開2017-064203, 2017年04月06日
  • トレーニング装置、トレーニング装置の制御方法及び制御プログラム               
    特許権, 野村 英史, 今井 茂, 山村 侑平, 中野 直樹, 田中 孝之, 今村 由芽子
    特願2014-107481, 2014年05月23日
    特開2015-221178, 2015年12月10日
  • 腰部筋力補助具
    特許権, 田中 孝之, 鈴木 善人, 国立大学法人北海道大学, 株式会社スマートサポート
    特願2010-103038, 2010年04月28日
    特開2011-229704, 2011年11月17日
    特許5505631
    2014年03月28日
    201103039765473966
  • 筋力補助具
    特許権, 田中 孝之, 鈴木 善人, 吉成 哲, 前田 大輔, 山岸 暢, 国立大学法人北海道大学, 株式会社スマートサポート
    特願2010-055327, 2010年03月12日
    特開2011-188896, 2011年09月29日
    特許5505625
    2014年03月28日
    201103095200169365
  • 上向き作業のサポート装置
    特許権, 矢田 和也, 椎名 肖一, 上田 尚輝, 田中 孝之, 松本 浩輔, 株式会社大林組, 国立大学法人北海道大学
    特願2012-195066, 2012年09月05日
    特開2014-050452, 2014年03月20日
    特許5959058
    201403009871663389
  • アクチュエータ装置及び電動機の制御方法
    特許権, 田中 孝之, 中野 基輝, 山野 光一, 近藤 伸一, 関 修治, 坂本 直久, 国立大学法人北海道大学, 株式会社モリタホールディングス
    特願2008-144704, 2008年06月02日
    特開2009-296690, 2009年12月17日
    特許第5234410号
    2013年04月05日
    200903051596480607
  • 筋力補助装置の設定装置
    特許権, 田中 孝之, 鈴木 善人, 株式会社リープス
    特願2008-264901, 2008年10月14日
    特開2010-094147, 2010年04月30日
    201003067142771377
  • 腰部筋力補助具
    特許権, 田中 孝之, 鈴木 善人, 国立大学法人北海道大学, 株式会社スマートサポート
    特願2009-145540, 2009年06月18日
    特開2011-000277
    特許第4496398号
    2010年04月23日
    201103052766950470
  • 筋力補助装置
    特許権, 田中 孝之, 佐藤 悠太, 鈴木 善人, 坂本 直久, 関 修治, 国立大学法人 北海道大学, 株式会社リープス, 株式会社モリタホールディングス
    特願2006-246786, 2006年09月12日
    特開2008-067762, 2008年03月27日
    特許第4345025号
    2009年07月24日
    200903071513356544