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Intelligent Control of Biped Robot with Heterogeneous Legs

Authors:Wang Binrui, Northeastern University, China
Xu Xinhe, Northeastern University, China
Tan Jindong, Michigan Technological University, United States
Topic:4.3 Robotics
Session:Robot Control II
Keywords: Intelligent control, robot dynamics, modeling, computed torque control, learning control, hierarchical structures

Abstract

Intelligent bionic leg (IBL) is important for above-knee amputees. Biped robot with heterogeneous legs (BRHL) including artificial leg and bionic leg is proposed as a good test-bed for IBL. Mechanism and virtual prototype of BRHL is designed and built. Model of BRHL is established. Based on the complex differential algebraic equation of bionic leg, computed torque and PD feedback control of joint angle are introduced for gait tracking. The iterative learning control is applied in conjunction with computed torque and PD control law for good tracking performance. Control simulation is done and shows intelligent control is good for BRHL