Paper Abstract and Keywords |
Presentation |
2015-12-19 13:25
Theoretical Reproduction of Falling Accidents during Sit-to-Stand Movements Using Optimal Control Model Toshikazu Matsui, Kunio Dobashi, Nobuaki Nakazawa (Gunma Univ.) MBE2015-70 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
We have already formulated a dynamics-switching three-link and three-joint optimal control model that reproduces human sit-to-stand movements, and clarified its effectiveness. This study clarifies theoretically, by using the optimal control model, how the ankle-joint torque at the seat-off time affects the subsequent rising movement, and it examines the possibility to predict the risk of falling caused by miscalculation of the ankle-joint torque. Consequently, the following results are obtained: (1) the convergence and non-convergence of the model’s optimized calculation correspond to the success and failure in reproducing sit-to-stand movements, respectively, and the risk of falling can be predicted based on the failed reproduction results; (2) the ankle-joint torque at the seat-off time has its effective range necessary for the model to rise successfully from a chair; (3) a shortage of the ankle-joint torque makes the model pratfall, and an overage of the same torque makes the model fall forward to its knees. These results suggest that the optimal control model is effective in simulating falling movements as well. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Rising movements / Chair / Risk of falling / Optimal control model / Seat off time / Ankle joint torque / / |
Reference Info. |
IEICE Tech. Rep., vol. 115, no. 383, MBE2015-70, pp. 43-48, Dec. 2015. |
Paper # |
MBE2015-70 |
Date of Issue |
2015-12-12 (MBE) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
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MBE2015-70 |
Conference Information |
Committee |
MBE NC |
Conference Date |
2015-12-19 - 2015-12-19 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Nagoya Institute of Technology |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
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Paper Information |
Registration To |
MBE |
Conference Code |
2015-12-MBE-NC |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Theoretical Reproduction of Falling Accidents during Sit-to-Stand Movements Using Optimal Control Model |
Sub Title (in English) |
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Keyword(1) |
Rising movements |
Keyword(2) |
Chair |
Keyword(3) |
Risk of falling |
Keyword(4) |
Optimal control model |
Keyword(5) |
Seat off time |
Keyword(6) |
Ankle joint torque |
Keyword(7) |
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Keyword(8) |
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1st Author's Name |
Toshikazu Matsui |
1st Author's Affiliation |
Gunma University (Gunma Univ.) |
2nd Author's Name |
Kunio Dobashi |
2nd Author's Affiliation |
Gunma University (Gunma Univ.) |
3rd Author's Name |
Nobuaki Nakazawa |
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Gunma University (Gunma Univ.) |
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Speaker |
Author-1 |
Date Time |
2015-12-19 13:25:00 |
Presentation Time |
25 minutes |
Registration for |
MBE |
Paper # |
MBE2015-70 |
Volume (vol) |
vol.115 |
Number (no) |
no.383 |
Page |
pp.43-48 |
#Pages |
6 |
Date of Issue |
2015-12-12 (MBE) |
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