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Author:

Dong, Mingjie (Dong, Mingjie.) | Fan, Wenpei (Fan, Wenpei.) | Li, Jianfeng (Li, Jianfeng.) (Scholars:李剑锋) | Zhang, Pengfei (Zhang, Pengfei.)

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EI Scopus SCIE

Abstract:

End-effector type upper limb rehabilitation robots (ULRRs) are connected to patients at one distal point, making them have simple structures and less complex control algorithms, and they can avoid abnormal motion and posture of the target anatomical joints and specific muscles. Given that the end-effector type ULRR focuses more on the rehabilitation of the combined motion of upper limb chain, assisting the patient to perform collaborative tasks, and its intervention has some advantages than the exoskeleton type ULRR, we developed a novel three-degree-of-freedom (DOF) end-effector type ULRR. The advantage of the mechanical design is that the designed end-effector type ULRR can achieve three DOFs by using a four-bar mechanism and a lifting mechanism; we also developed the patient-specific exercises including patient-passive exercise and patient-cooperative exercise, and the advantage of the developed patient-cooperative exercise is that we simplified the human-robot coupling system model into a single spring system instead of the mass-spring-damp system, which efficiently improved the response speed of the control system. In terms of the organization structure of the work, we introduced the end-effector type ULRR's mechanical design, control system, inverse solution of positions, patient-passive exercise based on the inverse solution of positions and the linear position interpolation of servo drives, and patient-cooperative exercise based on the spring model, in sequence. Experiments with three healthy subjects have been conducted, with results showing good trajectory tracking performance in patient-passive exercise and showing effective, flexible, and good real-time interactive performance in patient-cooperative exercise.

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Author Community:

  • [ 1 ] [Dong, Mingjie]Beijing Univ Technol, Fac Mat & Mfg, 100 Pingleiyuan, Beijing 100124, Peoples R China
  • [ 2 ] [Fan, Wenpei]Beijing Univ Technol, Fac Mat & Mfg, 100 Pingleiyuan, Beijing 100124, Peoples R China
  • [ 3 ] [Li, Jianfeng]Beijing Univ Technol, Fac Mat & Mfg, 100 Pingleiyuan, Beijing 100124, Peoples R China
  • [ 4 ] [Zhang, Pengfei]Beijing Univ Technol, Fac Mat & Mfg, 100 Pingleiyuan, Beijing 100124, Peoples R China

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Source :

JOURNAL OF HEALTHCARE ENGINEERING

ISSN: 2040-2295

Year: 2022

Volume: 2022

ESI Discipline: Multidisciplinary;

ESI HC Threshold:91

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count: 1

SCOPUS Cited Count: 1

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 15

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