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Author Nagesh, I. ♦ Edwards, C.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2011
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations ♦ Other branches of engineering
Subject Keyword Observers ♦ Mathematical model ♦ Torque ♦ Satellites ♦ Equations ♦ Fault diagnosis ♦ Uncertainty
Abstract This paper proposes a method to identify and isolate actuator faults in a nonlinear benchmark satellite system Mars Express (Mex), subject to model uncertainties and sensor noise. A nonlinear sliding mode observer is designed to estimate the faults induced in the thrusters. The nonlinear Mex system gives rise to a special case of a sliding mode observer with no reduced order dynamics. The equivalent injection signal is filtered to generate a residual signal which is used to identify the faults present by means of threshold selection. Fault isolation is based on directional residual set evaluation using the equivalent injection signal. Finally performance of the designed FDI is verified using Monte Carlo simulations.
Description Author affiliation: Control and Research Group, Department of Engineering, University of Leicester, United Kingdom (Nagesh, I.) || Department of Engineering, University of Leicester, United Kingdom (Edwards, C.)
ISBN 9781457710629
ISSN 10851992
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2011-09-28
Publisher Place USA
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
e-ISBN 9781457710636
Size (in Bytes) 2.55 MB
Page Count 6
Starting Page 159
Ending Page 164


Source: IEEE Xplore Digital Library