Journal of Bionic Engineering ›› 2020, Vol. 17 ›› Issue (6): 1163-1174.doi: 10.1007/s42235-020-0101-9

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Bioinspired Musculoskeletal Model-based Soft Wrist Exoskeleton for Stroke Rehabilitation

Ning Li1,2,3, Tie Yang1,2, Yang Yang1,2, Peng Yu1,2*, Xiujuan Xue4, Xingang Zhao1,2, Guoli Song1,2, 
Imad H. Elhajj5, Wenxue Wang1,2, Ning Xi6, Lianqing Liu1,2*
  

  1. 1. State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
    2. Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, China
    3. University of Chinese Academy of Sciences, Beijing 100049, China
    4. Rehabilitation Center for the Disabled, Shenyang 110015, China
    5. Vision and Robotics Lab, Department of Electrical and Computer Engineering, American University of Beirut, 
    Beirut 1107 2020, Lebanon
    6. Emerging Technologies Institute, Department of Industrial & Manufacturing Systems Engineering, 
    University of Hong Kong, Pokfulam, Hong Kong 999077, China

  • 收稿日期:2020-05-09 修回日期:2020-09-11 接受日期:2020-09-23 出版日期:2020-11-10 发布日期:2020-12-16
  • 通讯作者: Peng Yu, Lianqing Liu E-mail:yupeng@sia.cn, lqliu@sia.cn
  • 作者简介:Ning Li1,2,3, Tie Yang1,2, Yang Yang1,2, Peng Yu1,2*, Xiujuan Xue4, Xingang Zhao1,2, Guoli Song1,2, Imad H. Elhajj5, Wenxue Wang1,2, Ning Xi6, Lianqing Liu1,2*

Bioinspired Musculoskeletal Model-based Soft Wrist Exoskeleton for Stroke Rehabilitation

Ning Li1,2,3, Tie Yang1,2, Yang Yang1,2, Peng Yu1,2*, Xiujuan Xue4, Xingang Zhao1,2, Guoli Song1,2, #br# Imad H. Elhajj5, Wenxue Wang1,2, Ning Xi6, Lianqing Liu1,2*#br#   

  1. 1. State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
    2. Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, China
    3. University of Chinese Academy of Sciences, Beijing 100049, China
    4. Rehabilitation Center for the Disabled, Shenyang 110015, China
    5. Vision and Robotics Lab, Department of Electrical and Computer Engineering, American University of Beirut, 
    Beirut 1107 2020, Lebanon
    6. Emerging Technologies Institute, Department of Industrial & Manufacturing Systems Engineering, 
    University of Hong Kong, Pokfulam, Hong Kong 999077, China

  • Received:2020-05-09 Revised:2020-09-11 Accepted:2020-09-23 Online:2020-11-10 Published:2020-12-16
  • Contact: Peng Yu, Lianqing Liu E-mail:yupeng@sia.cn, lqliu@sia.cn
  • About author:Ning Li1,2,3, Tie Yang1,2, Yang Yang1,2, Peng Yu1,2*, Xiujuan Xue4, Xingang Zhao1,2, Guoli Song1,2, Imad H. Elhajj5, Wenxue Wang1,2, Ning Xi6, Lianqing Liu1,2*

摘要: Exoskeleton robots have demonstrated the potential to rehabilitate stroke dyskinesia. Unfortunately, poor human-machine physiological coupling causes unexpected damage to human of muscles and joints. Moreover, inferior humanoid kinematics control would restrict human natural kinematics. Failing to deal with these problems results in bottlenecks and hinders its application. In this paper, the simplified muscle model and muscle-liked kinematics model were proposed, based on which a soft wrist exoskeleton was established to realize natural human interaction. Firstly, we simplified the redundant muscular system related to the wrist joint from ten muscles to four, so as to realize the human-robot physiological coupling. Then, according to the above human-like musculoskeletal model, the humanoid distributed kinematics control was established to achieve the two DOFs coupling kinematics of the wrist. The results show that the wearer of an exoskeleton could reduce muscle activation and joint force by 43.3% and 35.6%, respectively. Additionally, the humanoid motion trajectories similarity of the robot reached 91.5%. Stroke patients could recover 90.3% of natural motion ability to satisfy for most daily activities. This work provides a fundamental understanding on human-machine physiological coupling and humanoid kinematics control of the exoskeleton robots for reducing the post-stroke complications.'

关键词: stroke rehabilitation, simplified muscle model, soft wrist exoskeleton robot, bionic kinematics model

Abstract: Exoskeleton robots have demonstrated the potential to rehabilitate stroke dyskinesia. Unfortunately, poor human-machine physiological coupling causes unexpected damage to human of muscles and joints. Moreover, inferior humanoid kinematics control would restrict human natural kinematics. Failing to deal with these problems results in bottlenecks and hinders its application. In this paper, the simplified muscle model and muscle-liked kinematics model were proposed, based on which a soft wrist exoskeleton was established to realize natural human interaction. Firstly, we simplified the redundant muscular system related to the wrist joint from ten muscles to four, so as to realize the human-robot physiological coupling. Then, according to the above human-like musculoskeletal model, the humanoid distributed kinematics control was established to achieve the two DOFs coupling kinematics of the wrist. The results show that the wearer of an exoskeleton could reduce muscle activation and joint force by 43.3% and 35.6%, respectively. Additionally, the humanoid motion trajectories similarity of the robot reached 91.5%. Stroke patients could recover 90.3% of natural motion ability to satisfy for most daily activities. This work provides a fundamental understanding on human-machine physiological coupling and humanoid kinematics control of the exoskeleton robots for reducing the post-stroke complications.'

Key words: stroke rehabilitation, simplified muscle model, soft wrist exoskeleton robot, bionic kinematics model