Open AccessRobust reliable feedback controller design against actuator faults for linear parameter‐varying systems in finite‐frequency domain
Author(s) -
Chen Jianliang,
Zhang Weidong,
Cao YongYan
Publication year - 2015
Publication title -
iet control theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.059
H-Index - 108
eISSN - 1751-8652
pISSN - 1751-8644
DOI - 10.1049/iet-cta.2014.1308
Subject(s) - control theory (sociology) , actuator , robustness (evolution) , frequency domain , linear system , full state feedback , lemma (botany) , linear matrix inequality , mathematics , computer science , mathematical optimization , control (management) , mathematical analysis , artificial intelligence , ecology , biochemistry , chemistry , poaceae , biology , gene
This study addresses the finite‐frequency robust feedback controller design problem against actuator faults for linear parameter‐varying systems. First, a general model of actuator faults is presented. Then, sufficient conditions for the existence of the state‐feedback controller are obtained by using generalised Kalman–Yakubovich–Popov lemma and projection lemma, which guarantee that the closed‐loop system satisfies robustness performance in a finite‐frequency domain and is stable for both faults free and actuator faults. In addition, by introducing a state feedback gain, the non‐convexity conditions of the output‐feedback gain are derived. An iterative linear matrix inequality algorithm is proposed in this study to get the solution. The performances of the proposed reliable controller schemes are illustrated by two examples.