Robust Hinfinity filtering for a class of discrete-time nonlinear systems

Abstract In this paper, a robust H ∞ filtering problem is considered for a class of discrete-time nonlinear systems. Based on the Lyapunov method, a design criterion of the robust H ∞ filter guarantee not only the stability but also the prespecified upper bound of H ∞ norm from the disturbance inputs to error state outputs. The design condition can be solved easily by efficient convex optimization algorithms. Numerical examples show the effectiveness of the proposed method.

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