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http://dx.doi.org/10.5370/KIEE.2014.63.4.502

H∞ Filtering for a Class of Nonlinear Systems with Interval Time-varying Delay  

Lee, Sangmoon (Dept. of Electronic Engineering, Daegu University)
Liu, Yajuan (Dept. of Electronic Engineering, Daegu University)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.63, no.4, 2014 , pp. 502-508 More about this Journal
Abstract
In this paper, a delay-dependent $H_{\infty}$ filtering problem is investigated for discrete-time delayed nonlinear systems which include a more general sector nonlinear function instead of employing the commonly used Lipschitz-type function. By using the Lyapunov-Krasovskii functional approach, a less conservative sufficient condition is established for the existence of the desired filter, and then, the corresponding solvability condition guarantee the stability of the filter with a prescribed $H_{\infty}$ performance level. Finally, two simulation examples are given to show the effectiveness of the proposed filtering scheme.
Keywords
Discrete-time nonlinear system; Robust filtering; General sector nonlinear function; Stability; Interval time-varying delay;
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