Torque reflecting coordination control for bilateral shared autonomous system over open communication networks

In this paper, torque reflection based coordination control algorithm is designed for network-based bilateral shared autonomous system over open communication networks. The control algorithm for master and slave manipulator is designed by combining delayed position and velocity signal with the delayed reflected torques from the interaction between human and master and between slave and environment. Robust and adaptive control technique is used to deal with uncertainty associated with the gravity, unmodeled dynamic and other external input disturbance. The convergence of the closed loop system is shown by using Lyapunov method. In contrast with existing force reflection based design, the proposed controller can deal with uncertainty associated with the gravity, unmodeled dynamic and external input disturbance. Compared with other methods, the proposed design uses reflected torques from the interaction between master and human and between slave and environment so as to improve the transparency of the bilateral shared autonomous system. Finally, evaluation results are presented to demonstrate the validity of the proposed design for real-time applications.