Sliding mode control of time delay systems

An original scheme based on sliding mode control principle has been developed for controlled processes with distributed parameters and after-effects. Application of functional process model called anisochronic allows to build up the model on extremely low number of state variables selected as identical with available outputs as a rule. Specific feature of the method is a cancellation of process model delays by the state feedback based on original functional extension of Ackermann formula. Integrating controller action is added to avoid steady state offset and the augmented state feedback is implemented on a framework of Smith predictor scheme. Real application to. a heat transfer plant demonstrates practical merits of the presented method. Copyright (C) 2001 IFAC.