On the design of observer for unknown inputs fuzzy models
by Mohammed Chadli, Abdelkader Akhenak, Jose Ragot, Dider Maquin
International Journal of Automation and Control (IJAAC), Vol. 2, No. 1, 2008

Abstract: In this paper, we consider the design of an fuzzy observer for a non-linear system with unknown inputs described by a fuzzy model. The main objective is to estimate state variables of the fuzzy model subject to unknown inputs which influence states and outputs of the system simultaneously. Using the Lyapunov method and Linear Matrix Inequalities (LMI), sufficient conditions are proposed to design the proposed unknown input fuzzy observer. The pole placement in an LMI region is also considered. The validity of the proposed methodology is illustrated by an academic example.

Online publication date: Wed, 24-Sep-2008

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