Study and design on switched output feedback single-side networked control system with the output estimated by LS-ARX

To aim at the problem of networked control system which is the hotspot of research and application nowadays, a method with the object controlled by switched output feedback is proposed in this paper. It is that the feedback signal is used for the calculation of the control signal when the delay induced by the network is less than sampling period; And when the feedback signal cannot arrive at the controller in time, a signal estimated by LS-ARX (autoregressive model with exogenous) is used for feedback signal in calculating the control signal. The structure of relevant algorithm is designed, and a practical example that a DC motor is controlled through CAN network with periodic and burst interference is given in this paper. The results by simulated on the platform of TRUETIME shows that the influence to the performance of output by the interference is low and the method has good reference in practical application.