A design of multiloop predictive self-tuning PID controllers

In this paper, a design scheme of multiloop predictive self-tuning PID control systems is proposed for multivariable systems. The proposed scheme firstly uses a static pre-compensator as an approximately decoupling device, in order to roughly decouple the controlled object. Furthermore, by regarding the approximately decoupled system as a series of single-input single-output subsystems, a single-input single-output PID controller is designed for each subsystem. The PID parameters are calculated on-line based on the relationship between the PID control and the generalized predictive control laws. Copyright (C) 2001 IFAC.