Design of discrete time sliding mode observer in Networked Control System

For solving the problem of network induced delay and the measuring difficulty of control state monitoring in Networked Control Systems(NCS), a discrete sliding mode observer (DSMO) is designed in this paper. DSMO is robust despite the presence of bounded uncertainties. Discrete time sliding mode controller base of the DSMO is designed for a type of NCS. The simulation results show that the method is effective for time delay and disturbance.