Local nonlinear unknown input observer |
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Authors: | Ramzi Ben MESSAOUD and Mekki KSOURI |
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Affiliation: | Department of Electrical Engineering, National Engineering School of Tunis,Department of Electrical Engineering, National Engineering School of Tunis |
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Abstract: | This paper proposes a new nonlinear unknown input observer. The observer design approach utilizes the first order Taylor expansion. The observer gains are then obtained by a systematic method. In this paper, we added some improvements to this method. The developed approach also can enable observer design for a large class of differentiable nonlinear systems. The necessary and sufficient conditions for the existence of the observer are given. A numerical example is given to illustrate the attractiveness and the simplicity of the new design procedure. |
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Keywords: | Unknown inputs observers Stability Nonlinear systems Robust and state estimation |
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