Disturbance Rejection of Smith Predictor Control System

Abstract

Smith predictor control system can not yield desired responses to disturbances. This paper presents a method which can decay the output error to disturbances as fast as desired without change of the input-output transfer characteristeristics. This method uses a dynamical compensator. The design of the compensator and the mechanism of the disturbance rejection are discussed in detail. Illustrative examples are given to demonstrate the availability.