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 language | English |
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Pages (from-to) | 1109-1113 |
Number of pages | 5 |
Journal | Chinese Journal of Sensors and Actuators |
Volume | 22 |
Issue number | 8 |
State | Published - Aug 2009 |
Externally published | Yes |
Keywords
- Force sensor
- Hand exoskeleton
- Signal processing system
- Static calibration