Repetitive control of rehabilitation robot with multi-channel periodic input signal

Abstract

This paper analyzes cause of control errors for 5 DOF exoskeleton upper-limb rehabilitation robot. Based on the method of typical repetitive control, let multiple improved repetitive control loops with filtering parallel embed into closed-loop of control system in order to eliminate motion error of rehabilitation robot with multi-channel periodic input signal. The simulation results show that the effect of system tracking is very well and it has higher stability, tracking control purpose is attained.