Research on joint force sensor of a rehabilitation hand exoskeleton for injured fingers

Peng Wang, Yili Fu, Hongshan Liu, Shuguo Wang

Research output: Contribution to journalArticlepeer-review

Abstract

In order to add capability of force feedback to the hand exoskeleton for rehabilitation of injured fingers, a two DOF hand exoskeleton base joint force sensor was designed according to the theory of stress measurement. The elastomer of the sensor was analyzed by ANSYS software package. Strain principle of the sensor was studied based on finger's flexion and abduction/adduction motion. The signal collection circuit was illustrated and the static calibration of the force sensor was presented. During the finger's flexion motion, the sensitivity reached 0. 325V/N, the linearity reached 1. 4%; during the finger's abduction/adduction motion, the sensitivity reached 0. 346V/N, the linearity reached 2. 9%. The experiment results showed that the force sensor could match the requirement of the hand exoskeleton system.

Original languageEnglish
Pages (from-to)1109-1113
Number of pages5
JournalChinese Journal of Sensors and Actuators
Volume22
Issue number8
StatePublished - Aug 2009
Externally publishedYes

Keywords

  • Force sensor
  • Hand exoskeleton
  • Signal processing system
  • Static calibration

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