Transactions of the Institute of Systems, Control and Information Engineers
Online ISSN : 2185-811X
Print ISSN : 1342-5668
ISSN-L : 1342-5668
A Design of Digital Tracking Controller in the Presence of Load Change
Tohru KATAYAMAHidehiko YAMAMOTOMorimasa OGAWAToshiaki ITOHToru FUJINAKA
Author information
JOURNAL FREE ACCESS

1992 Volume 5 Issue 3 Pages 111-121

Details
Abstract

This paper deals with a digital tracking control system subject to change in load condition. It is assumed that the plant is described by a discrete-time state-space model with a time delay and a direct forward link between control input and output. An optimal controller with state feedback plus integral and preview actions is derived by using the LQI technique. It is shown under the stabilizability and detectability conditions that the optimal closed-loop system is stable and achieves a complete output regulation. For a special case where the time delay is unilateral, we present an algorithm for computing feedback gain with less computational effort. The tracking performance of proposed optimal control law is evaluated through a numerical example for a heat exchanger model. Experimental studies using a pilot plant show that the controller gives acceptable tracking performance in the presence of load change.

Content from these authors
© The Institute of Systems, Control and Information Engineers
Previous article Next article
feedback
Top