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

By Xing-Gang Yan and Christopher Edwards

Abstract

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

Topics: adaptive control, fault diagnosis, linear matrix inequalities, nonlinear control systems, uncertain systems, variable structure systems
Publisher: Institution of Engineering and Technology (IET)
Year: 2008
DOI identifier: 10.1049/iet-cta:20070338
OAI identifier: oai:lra.le.ac.uk:2381/9750
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