Disturbance Rejection Based on Output Feedback for Discrete-Time Systems

Author

Bai, Mei ; Tang, Gong-You ; Zhang, Cheng-Ming

Author_Institution

Ocean Univ. of China, Qingdao

fYear

2007

fDate

May 30 2007-June 1 2007

Firstpage

3152

Lastpage

3156

Abstract

Based on dynamic output feedback for linear discrete-time systems, the disturbance rejection under external persistent disturbances with known dynamic characteristics but unknown initial conditions is considered. Using a model transformation, the system with disturbances is first transformed to an augmented system without disturbances. A reduced-order observer of the augmented system is constructed, and a dynamic output feedback control law approximating optimal control is presented. Simulation results demonstrate the effectiveness of the designed control law.

Keywords

discrete time systems; feedback; linear systems; optimal control; reduced order systems; augmented system; disturbance rejection; dynamic output feedback control law; linear discrete-time systems; model transformation; optimal control; reduced-order observer; Automatic control; Control systems; Costs; Instruments; Investments; Linear feedback control systems; Ocean waves; Optimal control; Output feedback; State feedback; discrete syetem; observer; optimal control; output feedback; persistent disturbance;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Automation, 2007. ICCA 2007. IEEE International Conference on

Conference_Location

Guangzhou

Print_ISBN

978-1-4244-0817-7

Electronic_ISBN

978-1-4244-0818-4

Type

conf

DOI

10.1109/ICCA.2007.4376943

Filename

4376943