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\(H_{\infty}\) filtering for stochastic singular fuzzy systems with time-varying delay. (English) Zbl 1331.93206

Summary: This paper considers the \(H_{\infty}\) filtering problem for stochastic singular fuzzy systems with time-varying delay. We assume that the state and measurement are corrupted by stochastic uncertain exogenous disturbance and that the system dynamic is modeled by Ito-type stochastic differential equations. Based on an auxiliary vector and an integral inequality, a set of delay-dependent sufficient conditions is established, which ensures that the filtering error system is \(e^{\lambda t}\)-weighted integral input-to-state stable in mean (iISSiM). A fuzzy filter is designed such that the filtering error system is impulse-free, \(e^{\lambda t}\)-weighted iISSiM and the \(H_{\infty}\) attenuation level from disturbance to estimation error is below a prescribed scalar. A set of sufficient conditions for the solvability of the \(H_{\infty}\) filtering problem is obtained in terms of a new type of Lyapunov function and a set of linear matrix inequalities. Simulation examples are provided to illustrate the effectiveness of the proposed filtering approach developed in this paper.

MSC:

93E11 Filtering in stochastic control theory
93B36 \(H^\infty\)-control
93C42 Fuzzy control/observation systems
34K36 Fuzzy functional-differential equations
34K50 Stochastic functional-differential equations
37M05 Simulation of dynamical systems
37N35 Dynamical systems in control
Full Text: DOI

References:

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