On the use of dynamic inversion for the improvement of PID control

Authors:	Visioli Antonio, University of Brescia, Italy Piazzi Aurelio, University of Parma, Italy
Topic:	6.1 Chemical Process Control
Session:	Advanced Linear Control
Keywords:	Process control, PID control, feedforward control, inversion, process parameters estimation.

Abstract

In this paper we discuss the use of a noncausal approach for the improvement of PID control, accordingto a method presented in (A. Piazzi, A. Visioli, Proc. American Control Conference 2004). In particular we verify that, despite the proposed methodology is based on an estimated first-order plus dead time (FOPDT) model of the process, different identification procedure can be employed for this purpose yielding in any case to a good result. Further, the role of the unique design parameter is analysed.