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In this study, the authors discuss the modelling and control for a class of networked control systems (NCSs) with packet dropouts. In cases where there may be packet dropouts in both backward and forward channels in a communication network, the closed-loop NCSs are modelled as a discrete time switched system with four subsystems. By using the average dwell time method, sufficient conditions for the exponential stability of the closed-loop NCSs are presented, and the relation between the packet dropout rate and the stability of the closed-loop NCSs is explicitly established. Finally, an illustrative example is given to demonstrate the effectiveness of the proposed method.
Date of Publication: January 6 2011