DocumentCode :
3317060
Title :
Predictive control for dual-rate systems based on lifted state-space model identified by N4SID method
Author :
Qin, Pan ; Yang, Zi-Jiang ; Nishii, Ryuei
Author_Institution :
Grad. Sch. of Math., Kyushu Univ., Fukuoka, Japan
fYear :
2009
fDate :
15-18 Dec. 2009
Firstpage :
7369
Lastpage :
7374
Abstract :
We address a novel predictive control strategy for dual-rate systems in which the input updating period is different from the output sampling period based on lifted state-space model identified by a modified Numerical Subspace State-Space IDentification (N4SID). There are three steps in the predictive control strategy. Firstly, lifted state-space models are identified for dual-rate systems by the modified N4SID. Based on the identified lifted state-space model, we construct predictors which can predict the output of dual-rate systems in multi-step ahead. Combining the predictors with an objective function minimization, predictive control laws for dual-rate systems are derived.
Keywords :
function approximation; minimisation; predictive control; state-space methods; N4SID method; dual rate systems; input updating period; lifted state space model; numerical subspace state-space identification; objective function minimization; predictive control; Algorithm design and analysis; Control systems; Economic forecasting; Iterative algorithms; Mathematics; Minimization methods; Predictive control; Predictive models; Sampling methods; State estimation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Decision and Control, 2009 held jointly with the 2009 28th Chinese Control Conference. CDC/CCC 2009. Proceedings of the 48th IEEE Conference on
Conference_Location :
Shanghai
ISSN :
0191-2216
Print_ISBN :
978-1-4244-3871-6
Electronic_ISBN :
0191-2216
Type :
conf
DOI :
10.1109/CDC.2009.5400855
Filename :
5400855
Link To Document :
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