Automatic Control System with an Autotuning Module and a Predictive PID-Algorithm for Thermal Processes

This paper considers a single-loop control system which consists of a process, a PID-algorithm with a second order filter, an autotuning module and a prediction module. The prediction module is in the feedback; the linear prediction algorithm is used in it. The control process is a typical thermal process with a time delay. The performance of the system is analyzed. The recommendations on the prediction time choosing given in the literature are analysed and new recommendations are given for the system with the PID-algorithm mentioned above; the dependence between the prediction time and the control plant delay time is analysed. The advantages of the control system with the prediction module and the optimal prediction time are shown. The system computer model is developed in the Matlab and Simulink.