Title :
A simple adaptive PI controller for linear systems with constant disturbances
Author :
Fan, Jia-Chun ; Kobayashi, Toshihiro
Author_Institution :
Dept. of Control Eng., Kyushu Inst. of Technol., Kitakyushu, Japan
fDate :
5/1/1998 12:00:00 AM
Abstract :
It is known that an adaptive controller via high-gain output feedback can globally stabilize a class of minimum phase systems with relative degree one. However, exact output regulation is difficult for systems with disturbances. In this paper, we consider linear single-input/single-output (SISO) systems with unknown constant disturbances. We present a simple adaptive output feedback controller with an integral action and show that it can asymptotically stabilize those disturbed systems. The proposed PI type adaptive controller can also deal with the output tracking problem of a step reference
Keywords :
adaptive control; asymptotic stability; control system analysis; feedback; linear systems; two-term control; adaptive PI controller; constant disturbances; exact output regulation; high-gain output feedback; integral action; linear SISO systems; Adaptive control; Adaptive systems; Automatic control; Control systems; Feedback control; Linear systems; Output feedback; Pi control; Programmable control; Vectors;
Journal_Title :
Automatic Control, IEEE Transactions on