Robustification of time varying linear quadratic optimal control based on output integral sliding modes

被引：12
|
作者：
Galvan-Guerra, Rosalba [1 ]
Fridman, Leonid [1 ]
机构：
[1] Univ Nacl Autonoma Mexico, Fac Ingn, Mexico City 04510, DF, Mexico
来源：
IET CONTROL THEORY AND APPLICATIONS | 2015年 / 9卷 / 04期
关键词：
robust control; linear quadratic control; time-varying systems; variable structure systems; observers; uncertain systems; time varying linear quadratic optimal control; robustification; hierarchical observer; uncertain linear time-varying system; output integral sliding-mode technique; computer simulations;
D O I：
10.1049/iet-cta.2014.0095
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
A hierarchical observer for an uncertain linear time-varying system is designed generalising the output integral sliding-mode approach. The observer is based on a step by step reconstruction of the output and its derivatives, to reconstruct the state theoretically exactly right after the initial time, eliminating completely the effects of the uncertainties/perturbations. The observed state is used in linear quadratic control with an output integral sliding-mode technique, allowing the uncertain system to behave as a nominal (uncertainties/perturbations free) one. The proposed approach is tested by computer simulations.
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页码：563 / 572
页数：10
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