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Fault estimation for single output nonlinear systems using an adaptive sliding mode estimator

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2 Author(s)
Yon, X.-G. ; Control & Instrum. Res. Group, Univ. of Leicester, Leicester ; Edwards, C.

A class of single output nonlinear systems with an uncertain parameter is considered. A diffeomorphism is first introduced to simplify the system structure, then, by employing an adaptive approach to identify the unknown parameter, a sliding mode approximate estimator is developed to estimate the system state variables. Based on the estimator, a fault estimation scheme is proposed together with an approach to optimise the estimation error using linear matrix inequality techniques. A simulation example is given to demonstrate the proposed scheme.

Published in:

Control Theory & Applications, IET  (Volume:2 ,  Issue: 10 )