Journal
CHINESE SCIENCE BULLETIN
Volume 45, Issue 21, Pages 1938-1944Publisher
SCIENCE PRESS
DOI: 10.1007/BF02909682
Keywords
extended state observer (ESO); continuous non-smooth structure; self-stable region (SSR) method
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The extended state observer (ESO) is a novel observer for a class of uncertain systems. Since ESO adopts the continuous non-smooth structure, the classical observer design theory is hard to use for ESO analysis. In this note, the self-stable region (SSR) approach, which is a nonlinear synthesis method for nonlinear uncertain systems, will be used for ESO design and its stability analysis. The advantages of the non-smooth structure in ESO for improving the convergence properties and the estimation precision will be shown.
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