Modified Smith predictors for integrating processes: Comparisons and proposition

Abstract

We summarize and systematically analyze the strong and weak points of previous modified Smith predictors for integrating processes, and we improve previous approaches by introducing an enhanced Smith predictor. The proposed Smith predictor can accelerate the servo tracking response as much as we want without destabilizing the closed-loop response by separating the servo and regulatory. control problems. Its structure is very compact-so that it can realize the good control performances of the previous approaches while retaining simplicity. Moreover, its design strategy can incorporate much more general integrating processes than previous approaches.