NDLI: Robust H/sub /spl infin// observer for a class of nonlinear discrete systems

Content Provider	IEEE Xplore Digital Library
Author	Guoping Lu Ho, D.W.C.
Copyright Year	2004
Description	Author affiliation: Dept. of Math., City Univ. of Hong Kong, China (Guoping Lu; Ho, D.W.C.)
Abstract	In this paper, the robust H/sub /spl infin// observer design problem is studied for a class of nonlinear discrete systems with time-delay and uncertainties. The non-linearities are assumed to satisfy global Lipschitz conditions which appear in both dynamics and measured output equation. The problem addressed is to design a nonlinear observer such that, for all the admissible uncertainties, the dynamics of the observer error is globally exponentially stable and has a prescribed H/sub /spl infin// performance. A linear matrix inequality approach is developed and sufficient condition is obtained to design the nonlinear robust H/sub /spl infin// observer. Specifically, the convergent rate of error state can be estimated by the initial condition and time-delay of the system. Furthermore, robust H/sub /spl infin// observer designs for linear (or bilinear) discrete systems with time-delay and uncertainties can be obtained directly. Finally, the effectiveness of the proposed observer design is illustrated through a numerical example.
Starting Page	252
Ending Page	257
File Size	773241
Page Count	6
File Format	PDF
ISBN	0780388739
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-07-20
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	ASCC
Subject Keyword	Sufficient conditions Uncertainty Nonlinear equations Delay effects Delay systems Observers Robustness Mathematics Linear matrix inequalities State estimation
Content Type	Text
Resource Type	Article

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