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Quantized H-infinity filtering for state-delayed systems with finite frequency specifications

Abstract : This paper presents a novel design approach for the finite frequency (FF) H-infinity filtering problem for discrete-time state-delayed systems with quantized measurements. The system state and output are assumed affected by FF external noises. Attention is focused on the design of a stable filter that guarantees the stability and a prescribed l(2) gain performance level for the filtering error system in the FF domain of input noises. Sufficient conditions for the solvability of this problem are developed by choosing an appropriate Lyapunov-Krasovskii functional based on the delay partitioning technique and using the FF l(2) gain definition combined with the generalized S-procedure. Then, by means of Finsler's lemma, the derived conditions are linearized and additional slack variables are further introduced to more flexible result. Final filter design conditions are consequently established in terms of linear matrix inequalities in three different frequency ranges, ie, low-, middle- and high-frequency range. Finally, a simulation example is presented to illustrate the effectiveness and the merits of the proposed approach.
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Soumis le : mercredi 6 avril 2022 - 18:57:03
Dernière modification le : jeudi 7 avril 2022 - 03:05:28




D. El Hellani, A. El Hajjaji, R. Ceschi. Quantized H-infinity filtering for state-delayed systems with finite frequency specifications. INTERNATIONAL JOURNAL OF ADAPTIVE CONTROL AND SIGNAL PROCESSING, 2018, 32 (8), pp.1191-1205. ⟨10.1002/acs.2896⟩. ⟨hal-03633219⟩



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