Input-To-State Stabilization of Switched Cyber-Physical Systems with Network Communication Delays
摘要
This paper deals with the input-to-state (IS) stabilization of switched cyber-physical systems (SCPSs) that involve two communication networks (sampler-to-buffer and controller-to-actuator). Transmission delays in both communication networks are considered. Two data buffers, used to store the latest sampled data and the latest received data, are employed in the control unit. To avoid using disordered data packets received by the control unit, a proactive strategy to drop the disordered data packets is proposed. A switched state feedback controller is designed, which can develop a closed-loop switched system with delays and asynchronous switching. Although the actuator cannot identify the disordered data of the control input, the proposed control scheme is still capable of reducing the number of disordered switching events and weakening the adverse effects of the disordered data on the system performance. A sufficient condition to ensure the solvability of the IS stabilization problem is derived using the mode-dependent average dwell time (MDADT) method and the Lyapunov functional technique. A step-by-step procedure for obtaining a feasible solution is also provided. Lastly, the model of a mass-switched unmanned marine vehicle is utilized to show the effectiveness of the proposed results.