Hybrid force-velocity sliding mode control of a prosthetic hand.
Four different methods of hand prosthesis control are developed and examined experimentally. Open-loop control is shown to offer the least sensitivity when manipulating objects. Force feedback substantially improves upon open-loop control. However, it is shown that the inclusion of velocity and/or position feedback in a hybrid force-velocity control scheme can further improve the functionality of hand prostheses. Experimental results indicate that the sliding mode controller with force, position, and velocity feedback is less prone to unwanted force overshoot when initially grasping objects than the other controllers.
Engeberg
Erik D
ED
University of Utah,Salt Lake City, UT 84112, USA. e.engeberg@utah.edu
Meek
Sanford G
SG
Minor
Mark A
MA
D001186:Artificial Limbs; D004576:Electromyography / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005246:Feedback; D006225:Hand; D006801:Humans; D008328:Man-Machine Systems; D014584:User-Computer Interface