Presentation 2015-11-21
Obstacle-Avoiding Strategy in Human Three-Joint Arm's Reaching Movement Mechanism
Toshikazu Matsui, Hiroki Okabe, Shin-ya Imai,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) This research formulates a new optimal control model for reproducing human arm’s obstacle-avoiding movements through incorporating two kinds of obstacle-avoiding conditions into the three-joint arm’s optimal control model and examines the model’s performance. The first condition is that the hand path is tangent at an avoiding time to the avoiding line that is parallel to the line connecting the start and final points. The second condition is that the tangent point, i.e., the avoiding point, involves the position of the obstacle deeply. Consequently, the following results are obtained: (1) the proposed model can generate obstacle-avoiding movements similar to measured ones under the two avoiding conditions; (2) there exists the optimal avoiding time to minimize the model’s criterion function; (3) the model’s optimal obstacle-avoiding trajectories based on torque-change minimization agrees better with the measured ones than those based on energy minimization. These results suggest that the model’s avoiding conditions can be valid in reproducing human arm’s obstacle-avoiding movements and that the human arm’s obstacle-avoiding mechanism can function based on torque-change minimization.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Three-joint arm / Optimal control model / Obstacle avoiding movement / Obstacle avoiding condition / Avoiding line / Avoiding distance / Avoiding time / Avoiding point
Paper # MBE2015-56
Date of Issue 2015-11-13 (MBE)

Conference Information
Committee MBE / NC
Conference Date 2015/11/20(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Tohoku University
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair Tetsuo Kobayashi(Kyoto Univ.) / Toshimichi Saito(Hosei Univ.)
Vice Chair Yutaka Fukuoka(Kogakuin Univ.) / Shigeo Sato(Tohoku Univ.)
Secretary Yutaka Fukuoka(akita noken) / Shigeo Sato(Kogakuin Univ.)
Assistant Takenori Oida(Kyoto Univ.) / Ryota Horie(Shibaura Inst. of Tech.) / Hiroyuki Kanbara(Tokyo Inst. of Tech.) / Hisanao Akima(Tohoku Univ.)

Paper Information
Registration To Technical Committee on ME and Bio Cybernetics / Technical Committee on Neurocomputing
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Obstacle-Avoiding Strategy in Human Three-Joint Arm's Reaching Movement Mechanism
Sub Title (in English)
Keyword(1) Three-joint arm
Keyword(2) Optimal control model
Keyword(3) Obstacle avoiding movement
Keyword(4) Obstacle avoiding condition
Keyword(5) Avoiding line
Keyword(6) Avoiding distance
Keyword(7) Avoiding time
Keyword(8) Avoiding point
1st Author's Name Toshikazu Matsui
1st Author's Affiliation Gunma University(Gunma Univ.)
2nd Author's Name Hiroki Okabe
2nd Author's Affiliation Gunma University(Gunma Univ.)
3rd Author's Name Shin-ya Imai
3rd Author's Affiliation Gunma University(Gunma Univ.)
Date 2015-11-21
Paper # MBE2015-56
Volume (vol) vol.115
Number (no) MBE-317
Page pp.pp.17-22(MBE),
#Pages 6
Date of Issue 2015-11-13 (MBE)