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Unknown Input Observer Design for Takagi-Sugeno Systems with Fuzzy Output Equation

Jitao Li, Zhenhua Wang*, Yi Shen, and Yipeng Liu
International Journal of Control, Automation, and Systems, vol. 17, no. 1, pp.267-272, 2019

Abstract : "This paper studies unknown input observer design for discrete-time Takagi-Sugeno fuzzy systems. The proposed unknown input observer has a new structure that can be applied to Takagi-Sugeno fuzzy systems with nonlinear output equation. We derive the design conditions of the proposed unknown input observer based on Lyapunov function and convert them into a set of linear matrix inequalities. Numerical simulations of a vehicle lateral dynamics are given to illustrate the effectiveness of the proposed method."

Keyword : Fuzzy output equation, Takagi-Sugeno fuzzy systems, unknown input observer

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