Augmented Lyapunov functional and delay-dependent stability criteria for neutral systems

In this paper, an augmented Lyapunov functional is proposed to investigate the asymptotic stability of neutral systems. Two methods with or without decoupling the Lyapunov matrices and system matrices are developed and shown to be equivalent to each other. The resulting delay‐dependent stability cri...

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Bibliographic Details
Published in:International journal of robust and nonlinear control 2005-12, Vol.15 (18), p.923-933
Main Authors: He, Yong, Wang, Qing-Guo, Lin, Chong, Wu, Min
Format: Article
Language:English
Subjects:
delay-dependent stability
linear matrix inequality (LMI)
Lyapunov functional
neutral systems
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Summary:In this paper, an augmented Lyapunov functional is proposed to investigate the asymptotic stability of neutral systems. Two methods with or without decoupling the Lyapunov matrices and system matrices are developed and shown to be equivalent to each other. The resulting delay‐dependent stability criteria are less conservative than the existing ones owing to the augmented Lyapunov functional and the introduction of free‐weighting matrices. The delay‐independent criteria are obtained as an easy corollary. Numerical examples are given to demonstrate the effectiveness and less conservativeness of the proposed methods. Copyright © 2005 John Wiley & Sons, Ltd.
ISSN:1049-8923
1099-1239
DOI:10.1002/rnc.1039