A simple technique to improve the set-point following performance of Predictive Functional Control

In this paper we present a simple technique to improve the set-point following performance of the basic Predictive Functional Control algorithm. The technique is based on a first-order-plus-dead-time model of the process and on a suitable selection of the set-point signal, so that a process variable transition from a steady-state value to another one is achieved in a predefined time interval. The additional design effort, which is practically negligible, is discussed. Illustrative examples are given to demonstrate the effectiveness of the proposed solution.