Composing an Assistive Control Strategy Based on Linear Bellman Combination From Estimated User's Motor Goal
Composing an Assistive Control Strategy Based on Linear Bellman Combination From Estimated User's Motor Goal
复制标题
根据估计的用户运动目标构建基于线性贝尔曼组合的辅助控制策略
DOI:
10.1109/lra.2021.3051562
复制
发表时间:
2021
影响因子:
5.2
通讯作者:
Morimoto Jun
中科院分区:
文献类型:
--
作者:
Furukawa Jun-ichiro;Morimoto Jun
In assistive control strategies, we must estimate the user's movement intentions. In previous studies, such intended motions were inferred by linearly converting muscle activities to the joint torques of an assistive robot or classifying muscle activities to identify the most likely movement from pre-designed robot motion classes. However, the assistive performances of these approaches are limited in terms of accuracy and flexibility. In this study, we propose an optimal assistive control strategy that uses estimated user movement intentions as the terminal cost function not only for generating movements for different task goals but to precisely enhance the motion with an exoskeleton robot. The optimal assistive policy is derived by blending the pre-computed optimal control laws based on the linear Bellman combination method. Coefficients that determine how to blend the control laws are derived based on low-dimensional feature values that represent the user's movement intention. To validate our proposed method, we conducted an assisted basketball-throwing task and showed that the performances of our subjects significantly improved.
DOI:
10.1007/s13246-018-0646-7
发表时间:
2018-06-01
影响因子:
--
作者:
Purushothaman, Geethanjali;Vikas, Raunak
通讯作者:
Vikas, Raunak
DOI:
10.1109/icarcv.2010.5707406
发表时间:
2010
期刊:
2010 11th International Conference on Control Automation Robotics & Vision
影响因子:
--
作者:
Qingshan She;Zhizeng Luo;Ming Meng;Ping Xu
通讯作者:
Ping Xu
DOI:
10.1109/humanoids.2017.8246934
发表时间:
2017
期刊:
2017 IEEE-RAS 17th International Conference on Humanoid Robotics (Humanoids)
影响因子:
--
作者:
J. Furukawa;Asuka Takai;J. Morimoto
通讯作者:
J. Morimoto