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Received:July 31, 2006Revised:January 25, 2007 |
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Integral-inequality approach to delay-dependent robust H-infinity control for uncertain neutral systems |
Wen'an ZHANG, Li YU |
(Department of Automation, Zhejiang University of Technology, Hangzhou Zhejiang 310032, China) |
Abstract: |
This paper focuses on the design problem of a memoryless state feedback robust H-infinity controller for a class of uncertain neutral systems. By using a newly established integral inequality, a new delay-dependent bounded real lemma for such systems is derived without involving a fixed model transformation. Furthermore, new delay-dependent sufficient conditions for the existence of robust H-infinity controllers are presented in terms of nonlinear matrix inequalities. A design procedure involving an iterative algorithm is also proposed to design such controllers. Numerical examples are given to demonstrate the less conservatism of the proposed method. |
Key words: Neutral systems Uncertain systems Delay-dependent criteria H-infinity control Integral-inequality |