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A functional observer based fault detection technique for dynamical systems

journal contribution
posted on 2015-05-01, 00:00 authored by K Emami, T Fernando, B Nener, Hieu TrinhHieu Trinh, Y Zhang
This paper presents a functional observer based fault detection method. The fault detection is achieved using a functional observer based fault indicator that asymptotically converges to a fault indicator that can be derived based on the nominal system. The asymptotic value of the proposed fault indicator is independent of the functional observer parameters and also the convergence rate of the fault indicator can be altered by choosing appropriate functional observer parameters. The advantage of using this new method is that the observed system is not necessarily needed to be observable; therefore, the proposed fault detection technique is also applicable for systems where state observers cannot be designed; moreover, the functional observer fault detection scheme is always of reduced order in comparison to a state observer based scheme.

History

Journal

Journal of the Franklin Institute

Volume

352

Pagination

2113-2128

Location

Amsterdam, The Netherlands

ISSN

0016-0032

Language

eng

Publication classification

C Journal article, C1 Refereed article in a scholarly journal

Copyright notice

2015, The Franklin Institute

Issue

5

Publisher

Elsevier