Networked Control Systems Based on New Smith Predictor

In order to effectively restrain the influence of network delays on the performance of networked control systems(NCS),a new Smith predictor with regard to the delays of network and controlled plant was proposed.This new Smith predictor does not include prediction models of network delays,and network delays do not need to be measured,estimated or identified on line.As a result,it is suitable for the networked control systems with random,time-variant and uncertain network delays.The simulation results show that networked control systems based on the new Smith predictor have a strong robustness,a desirable dynamic performance and an anti-jamming ability when network delays are more than one even dozens of sampling periods.