Switching Robust Control Synthesis for Teleoperation via Dwell Time Conditions

Control design for bilateral teleoperation is still an open problem, given that it is desirable to meet a proper balance in the inherent trade-off between transparency and stability. We propose the use of switching robust control, in which smooth switching among controllers is achieved by the existence of multiple Lyapunov functions with a special structure, linked by conditions of maximum average dwell time switching among controllers. We show the advantage of the proposed method by means of a control design synthesis for an 1-DoF teleoperation system, and by means of simulations of the corresponding closed loop system.