Abstract
This paper is concerned with the problem of L 2 -L ∞ filtering for a class of neutral stochastic systems with both discrete and distributed time delays. By constructing a new Lyapunov-krasovskii functional, some novel delay-dependent exponential stochastic stability criteria are obtained in terms of linear matrix inequalities. In the derivation process, neither model transformation method nor free-weighting matrix approach is used. Based on the obtained stability criterion, the solvability of the L 2 -L ∞ filtering problem is also solved by introducing two appropriate slack matrix variables. Desired L 2 -L ∞ filter is designed such that the resulting filtering error system is mean-square exponential stable and a prescribed L 2 -L ∞ disturbance attenuation level is satisfied. Finally, numerical examples are included to illustrate the effectiveness and the benefits of the proposed method.
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