Title :
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
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;
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
DOI :
10.1109/CCDC.2010.5498413
