Optimal disturbance rejection for discrete-time systems with time-delay in control input

Author

Li, Dong ; Tang, Gong-You ; Han, Shi-Yuan

Author_Institution

Coll. of Inf. Sci. & Eng., Ocean Univ. of China, Qingdao, China

fYear

2010

fDate

26-28 May 2010

Firstpage

4054

Lastpage

4058

Abstract

This paper considers the optimal disturbance rejection for discrete-time systems with time-delay in control input. First, by using a variable transformation, the system with time-delay in control input is transformed into a non-delayed system with disturbance, and the quadratic performance index of the optimal tracking control is transformed into a relevant format. The feedforward control law with a state feedback, a disturbance feedforward and a control memory term is derived from a Riccati equation and a Stein equation. A disturbance state observer is constructed to make the feedforward compensator physically realize. Simulation results demonstrate the effectiveness of the optimal rejection control law.This is the paper style requirement for the Chinese Control and Decision Conference.

Keywords

Riccati equations; delays; discrete time systems; feedforward; observers; optimal control; performance index; state feedback; tracking; Riccati equation; Stein equation; control input; control memory term; discrete-time systems; disturbance feedforward; disturbance state observer; feedforward compensator; feedforward control law; nondelayed system; optimal disturbance rejection; optimal tracking control; quadratic performance index; state feedback; time-delay; variable transformation; Control systems; Educational institutions; Information science; Oceans; Optimal control; Output feedback; Performance analysis; Riccati equations; State feedback; Vibration control; Discrete-time Systems; Disturbance Rejection; Feedforward Control; Optimal Control; Time-delay;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Decision Conference (CCDC), 2010 Chinese

Conference_Location

Xuzhou

Print_ISBN

978-1-4244-5181-4

Electronic_ISBN

978-1-4244-5182-1

Type

conf

DOI

10.1109/CCDC.2010.5498413

Filename

5498413