Design, kinematics, simulation, and experiment for a lower-limb rehabilitation robot

Abstract

This paper investigates and proposes a lower-limb rehabilitation robot that is used to help patients with lower-limb paralysis to improve and resume physical functions. The proposed rehabilitation robot has the feature that three rotary joints consist of three crank rocker mechanisms with an identical module. The paper covers mechanism design and optimization, kinematics analysis and trajectory planning, motion simulation, the control system design, and experiments. The simulation and experimental results demonstrate that the proposed rehabilitation robot is safe and reliable with the effective design and better kinematic performance.