Bilateral control of nonlinear teleoperation with time varying communication delays

This paper addresses the bilateral control of nonlinear teleoperation with time varying communication delays. The proposed methods are two types of simple PD-type controllers which consists of D-controls depending on (the upper bound of) the rate of change of delay and P-controls depending on the upper bound of round-trip delay. Using Lyapunov-Krasovskii function, the delay-dependent stability of the origin is shown for the ranges of gains. Furthermore the proposed strategies also achieve master-slave position coordination and bilateral static force reflection. Several experimental results show the effectiveness of our proposed methods.

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