Another Novel Modification of Predictive PI Controller for Processes with Long Dead Times

PID controllers are indisputably the most common controller type encountered in process control applications. They are used for regulating processes with diverse dynamics in industrial applications. Especially, processes with long dead times should require special attention as they are difficult to handle with conventional PID controllers. A lof of different dead time compensating control methods have been introduced in theory. This paper presents another modification of a predicitive PI controller contributing to its inventor and, also hereby, Smith predictor. The proposed method has resemblance with a PID controller and, therefore, is rather applicable for industrial implementations for dead time dominating processes. The introduced method has an additional tuning parameter which is, however, intuitively rather appealing.