Homogeneous approximations and local observer design
Abstract
This paper is concerned with the construction of local observers for nonlinear systems without inputs, satisfying an observability rank condition. The aim of this study is, first, to define an homogeneous approximation that keeps the observability property unchanged. This approximation is further used in the synthesis of local observer which is proven to be locally convergent for Lyapunov- stable systems. We compare the performance of the homogeneous approximation observer with the classical linear approximation observer on an example.
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Automatic
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