Discrete-time saturation constrained adaptive pole assignment control

Author

Zhang, Cishen

Author_Institution

Dept. of Electr. & Electron. Eng., Melbourne Univ., Parkville, Vic., Australia

Volume

38

Issue

8

fYear

1993

fDate

8/1/1993 12:00:00 AM

Firstpage

1250

Lastpage

1254

Abstract

The performance of a discrete-time adaptive pole assignment controller subject to a saturation control constraint is analyzed. Closed-loop system stability is established for a class of type-I plants. In the presence of plant modeling uncertainties and disturbances, it is shown that the stability is maintained by implementing a simple fixed deadzone in the parameter estimator. If the plant is free from the modeling uncertainties and disturbances, the deadzone threshold can be set to zero. Then, the closed-loop system can be characterized by the desired poles when the control input is not saturated

Keywords

adaptive control; closed loop systems; discrete time systems; parameter estimation; poles and zeros; stability; closed loop systems; deadzone threshold; discrete time systems; disturbances; modeling uncertainties; saturation constrained adaptive pole assignment control; type-I plants; Adaptive control; Automatic control; Control systems; Low pass filters; Nonlinear control systems; Parameter estimation; Programmable control; Stability; Uncertain systems; Uncertainty;

fLanguage

English

Journal_Title

Automatic Control, IEEE Transactions on

Publisher

ieee

ISSN

0018-9286

Type

jour

DOI

10.1109/9.233161

Filename

233161