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Robust adaptive control of uncertain discrete-time state-delay systems

✍ Scribed by Magdi S. Mahmoud; El-Kébir Boukas; Abdulla Ismail


Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
352 KB
Volume
55
Category
Article
ISSN
0898-1221

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✦ Synopsis


This paper focuses on the controller resilience and performance deterioration issues due to inaccuracies in controller implementation. It addresses the problem of resilient adaptive control problem for a class of discrete-time state-delay systems and norm-bounded uncertainties against controller gain variations. Adaptive control schemes are constructed for the case of known gain perturbation bounds and then extended to accommodate unknown norm-bounded perturbations. Necessary and sufficient conditions for delay-independent asymptotic stability are established. An expanded state-space system called the "Compact Form" is established to derive delay-dependent criteria for stability and adaptive stabilization schemes. All the developed results are conveniently expressed in linear matrix inequalities format. A detailed simulation result is presented to demonstrate the developed theory.


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