Predictive PI(D) control for high order processes with time-delay
高阶时滞对象的预测PI(D)控制

Based on the model reduction theory in frequency-domain,two predictive PI(D) controller design methods for high order processes with time-delay are proposed.The first method is that the predictive PI(D) controller is designed by a low order model reduced directly from the process model.The second one is that a controller is first designed by the prescribed performance index,and then the controller is simplified to a predictive PI(D) controller.The advantages of these controllers are simple structure,small number of tuning parameters and easy tuning procedures.Illustrative examples are offered to show the good performance and robust stability of proposed schemes under model-process mismatch.