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Generalized Multiple Delay-dependent H∞ Functional Observer Design for Nonlinear System
Ghali Naami,Mohamed Ouahi,Teresa Alvarez,Abdelhamid Rabhi 제어·로봇·시스템학회 2023 International Journal of Control, Automation, and Vol.21 No.11
Functional observers are the major alternative to many practical estimation problems where full-order observers cannot be used. This paper introduces a generalized approach to design H∞ functional observers for a class of Lipschitz nonlinear systems with multiple time delays. Moreover, the considered system extends from previously published work in that it presents nonlinearity, multiple delay and external disturbance. Their main findings come from the development of a generalized augmented Lyapunov function that uses both the extended reciprocal convex combination and the Wirtinger inequality. The stability of the observer is therefore guaranteed by an LMI optimization problem. Finally, the steps of the design procedure were condensed and proffered for the two numerical examples to test the recommended design approach.