Title

Robust fault diagnosis of a satellite system using a learning strategy and second order sliding mode observer

Document Type

Article

Publication Date

3-1-2010

Publication Title

IEEE Systems Journal

Volume

4

Issue

1

First Page

112

Keywords

Fault diagnosis, Satellite systems, Sliding mode

Last Page

121

Abstract

This paper proposes a second-order sliding mode observer for fault diagnosis (FD) of a class of uncertain dynamical systems. In the proposed FD scheme, a modified super-twisting second-order sliding mode algorithm is firstly established to observe the system state in the presence of uncertainties and disturbances, and then the observer input is designed by using a PID-type iterative learning algorithm to detect, isolate, and estimate faults. The convergence of the sliding mode algorithm and the parameter update law for the iterative learning estimator are both theoretically and rigorously studied. Finally, the proposed fault diagnosis scheme is applied to the dynamics of a satellite with flexible appendages, and the simulation results demonstrate its effectiveness. © 2010 IEEE.

DOI

10.1109/JSYST.2010.2043786

ISSN

19328184

E-ISSN

19379234

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