Structural design and research of a novel lower limb rehabilitation robot for human–robot coupling

A bedside rehabilitation robot is developed to address the challenge of motor rehabilitation for patients with lower limb paralysis. Firstly, based on the principles of physical rehabilitation, a two-link planar robot model is used to simulate both the robot and human lower limbs, and the coupling c...

Full description

Bibliographic Details
Main Authors: Zhiqiang Wang, Jianhai Han, Bingjing Guo, Xiangpan Li, Ganqin Du
Format: Article
Language:English
Published: SAGE Publishing 2024-04-01
Series:International Journal of Advanced Robotic Systems
Online Access:https://doi.org/10.1177/17298806241238992
_version_ 1797221269227175936
author Zhiqiang Wang
Jianhai Han
Bingjing Guo
Xiangpan Li
Ganqin Du
author_facet Zhiqiang Wang
Jianhai Han
Bingjing Guo
Xiangpan Li
Ganqin Du
author_sort Zhiqiang Wang
collection DOAJ
description A bedside rehabilitation robot is developed to address the challenge of motor rehabilitation for patients with lower limb paralysis. Firstly, based on the principles of physical rehabilitation, a two-link planar robot model is used to simulate both the robot and human lower limbs, and the coupling characteristics between the human and robot are thoroughly analyzed. Then, the lower limb rehabilitation robot, fitted with an end-effector and ankle wearable feature, is designed according to the structural parameters. To enhance patient safety during rehabilitation, the device incorporates a freely rotating leg support mechanism that reduces the load on the ankle due to gravitational forces, and a two-stage series elastic mechanism is integrated below the foot support to provide a passive compliant output of robot power, allowing for more natural movement and reducing the risk of injury. Secondly, dynamic modeling is used to determine the dynamic parameters of the robot by conducting simulation calculations based on the inertia parameters of the human body and the robot model design parameters. Finally, an experimental platform is established using the structural and dynamic parameters, and the robot’s reliability is validated through experimentation. Results indicate that the robot can accurately complete passive rehabilitation training tasks, and the dynamic parameters meet the expected requirements.
first_indexed 2024-04-24T13:02:45Z
format Article
id doaj.art-449da604ab864050a8f33263cfaf9c3c
institution Directory Open Access Journal
issn 1729-8814
language English
last_indexed 2024-04-24T13:02:45Z
publishDate 2024-04-01
publisher SAGE Publishing
record_format Article
series International Journal of Advanced Robotic Systems
spelling doaj.art-449da604ab864050a8f33263cfaf9c3c2024-04-05T10:03:34ZengSAGE PublishingInternational Journal of Advanced Robotic Systems1729-88142024-04-012110.1177/17298806241238992Structural design and research of a novel lower limb rehabilitation robot for human–robot couplingZhiqiang Wang0Jianhai Han1Bingjing Guo2Xiangpan Li3Ganqin Du4 School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang, China Collaborative Innovation Center of Machinery Equipment Advanced Manufacturing of Henan Province, Luoyang, China Henan Provincial Key Laboratory of Robotics and Intelligent Systems, Luoyang, China Henan Provincial Key Laboratory of Robotics and Intelligent Systems, Luoyang, China The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, ChinaA bedside rehabilitation robot is developed to address the challenge of motor rehabilitation for patients with lower limb paralysis. Firstly, based on the principles of physical rehabilitation, a two-link planar robot model is used to simulate both the robot and human lower limbs, and the coupling characteristics between the human and robot are thoroughly analyzed. Then, the lower limb rehabilitation robot, fitted with an end-effector and ankle wearable feature, is designed according to the structural parameters. To enhance patient safety during rehabilitation, the device incorporates a freely rotating leg support mechanism that reduces the load on the ankle due to gravitational forces, and a two-stage series elastic mechanism is integrated below the foot support to provide a passive compliant output of robot power, allowing for more natural movement and reducing the risk of injury. Secondly, dynamic modeling is used to determine the dynamic parameters of the robot by conducting simulation calculations based on the inertia parameters of the human body and the robot model design parameters. Finally, an experimental platform is established using the structural and dynamic parameters, and the robot’s reliability is validated through experimentation. Results indicate that the robot can accurately complete passive rehabilitation training tasks, and the dynamic parameters meet the expected requirements.https://doi.org/10.1177/17298806241238992
spellingShingle Zhiqiang Wang
Jianhai Han
Bingjing Guo
Xiangpan Li
Ganqin Du
Structural design and research of a novel lower limb rehabilitation robot for human–robot coupling
International Journal of Advanced Robotic Systems
title Structural design and research of a novel lower limb rehabilitation robot for human–robot coupling
title_full Structural design and research of a novel lower limb rehabilitation robot for human–robot coupling
title_fullStr Structural design and research of a novel lower limb rehabilitation robot for human–robot coupling
title_full_unstemmed Structural design and research of a novel lower limb rehabilitation robot for human–robot coupling
title_short Structural design and research of a novel lower limb rehabilitation robot for human–robot coupling
title_sort structural design and research of a novel lower limb rehabilitation robot for human robot coupling
url https://doi.org/10.1177/17298806241238992
work_keys_str_mv AT zhiqiangwang structuraldesignandresearchofanovellowerlimbrehabilitationrobotforhumanrobotcoupling
AT jianhaihan structuraldesignandresearchofanovellowerlimbrehabilitationrobotforhumanrobotcoupling
AT bingjingguo structuraldesignandresearchofanovellowerlimbrehabilitationrobotforhumanrobotcoupling
AT xiangpanli structuraldesignandresearchofanovellowerlimbrehabilitationrobotforhumanrobotcoupling
AT ganqindu structuraldesignandresearchofanovellowerlimbrehabilitationrobotforhumanrobotcoupling