• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2025, Vol. 61 ›› Issue (21): 100-110.doi: 10.3901/JME.2025.21.100

Previous Articles    

Design of a Human-machine Motion Centre Auto-matched Wrist Rehabilitation Exoskeleton

WANG Tun1, ZHANG Hang1, ZHANG Shimin1, ZHU Xiaoxiao2, ZHANG Laibin2, DAI Jiansheng3,4   

  1. 1. College of Mechanical and Transportation Engineering, China University of Petroleum (Beijing), Beijing 102249;
    2. College of Safety and Ocean Engineering, China University of Petroleum (Beijing), Beijing 102249;
    3. Institute for Robotics, Southern University of Science and Technology, Shenzhen 518055;
    4. Centre for Robotics Research, King's College London, London WC2R 2LS, UK
  • Received:2025-02-28 Revised:2025-08-13 Published:2025-12-27

Abstract: Stroke is a neurodegenerative disease, and the leading cause of death and disability among adults in China, which places a significant burden on families and society. Robotic technology can effectively assist stroke patients in neuroplasticity and limb rehabilitation. The wrist joint, as one of the most agile joints in the human body, its dysfunction can significantly degrade the quality of life for patients. Therefore, an exoskeleton robot based on a parallel mechanism has been designed for wrist rehabilitation. The design considered the skeletal structure of the wrist and proposed a novel reduced model that more accurately reflects the biomechanical characteristics of the wrist joint’s movement. Based on the model, the human-machine compatibility and motion characteristics of the designed exoskeleton are analysed by employing the screw theory. The kinematic model of the exoskeleton mechanism is established, and its kinematic performance such as singularity, workspace, and dexterity were evaluated, along with an analysis of its actuation feature. The results indicated that the design meets the rehabilitation needs of the wrist joint and can match the movable wrist joint centre in real-time. Compared to existing studies, the designed exoskeleton exhibits superior kinematic performance and achieves actuation decoupling.

Key words: stroke rehabilitation, parallel mechanism, exoskeleton robot, screw theory

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