Fault detection in spacecraft attitude control system

This paper presents a method for detecting faults in a reaction wheel of an attitude control system of a spacecraft. A nonlinear observer is proposed as a residual generator to detect the anomalies and faults. To justify the need for the proposed complex nonlinear observer, a linear residual generat...

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Bibliographic Details
Published in2007 IEEE International Conference on Systems, Man and Cybernetics pp. 726 - 733
Main Authors Azarnoush, H., Khorasani, K.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2007
Subjects
Brushless DC motors
DC motors
Electrical fault detection
Fault detection
Fault diagnosis
Flywheels
Nonlinear observers
Nonlinear systems
Space vehicles
spacecraft attitude control system
Uncertainty
Wheels
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ISBN142440990X
9781424409907
ISSN1062-922X
DOI10.1109/ICSMC.2007.4413816

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Summary:This paper presents a method for detecting faults in a reaction wheel of an attitude control system of a spacecraft. A nonlinear observer is proposed as a residual generator to detect the anomalies and faults. To justify the need for the proposed complex nonlinear observer, a linear residual generation scheme is also considered as a benchmark and also for comparison. The linear observer is designed through linearization of the highly nonlinear dynamics of the reaction wheel. The performance and limitations of the linear observer subject to the three fault scenarios commonly present in the reaction wheel are investigated. The advantages and capabilities of applying the proposed nonlinear observer are demonstrated and emphasized through numerical simulations.
ISBN:142440990X
9781424409907
ISSN:1062-922X
DOI:10.1109/ICSMC.2007.4413816