Fuzzy extended state observer for the fault detection and identification
Pablo J Prieto1, Corina Plata-Ante2, Ramón Ramírez-Villalobos2
1CETYS Universidad, Av. CETYS Universidad No. 4, Fracc. El Lago, 22210, B.C., México.
Abstract:
This paper introduces a novel methodology to detect and identify faults for a class of autonomous nonlinear systems. In the proposed design, a fuzzy extended system observer (FESO) based on the Mandami-type fuzzy system is used to estimate the fault that is considered to be the extended system state. In this method, the Mamdani-type fuzzy system is based on a single-input single-output (SISO) where the observer error is considered as the fuzzy input variable. Additionally, the stability analysis under Lyapunov criteria verifies that the solutions of proposed FESO are ultimately bounded. Finally, simulation examples are given to corroborate the feasibility of the proposed FESO.
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