Sensor fault-tolerant observer applied in satellite attitude control
Wei, Jiaolong, Cen, Zhaohui, & Jiang, Rui (2012) Sensor fault-tolerant observer applied in satellite attitude control. Journal of Systems Engineering and Electronics, 23(1), pp. 99-107.
The observing failure and feedback instability might happen when the partial sensors of a satellite attitude control system (SACS) go wrong. A fault diagnosis and isolation (FDI) method based on a fault observer is introduced to detect and isolate the fault sensor at first. Based on the FDI result, the object system state-space equation is transformed and divided into a corresponsive triangular canonical form to decouple the normal subsystem from the fault subsystem. And then the KX fault-tolerant observers of the system in different modes are designed and embedded into online monitoring. The outputs of all KX fault-tolerant observers are selected by the control switch process. That can make sense that the SACS is part-observed and in stable when the partial sensors break down. Simulation results demonstrate the effectiveness and superiority of the proposed method.
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|Item Type:||Journal Article|
|Keywords:||triangular canonical form, KX observer, satellite attitude control, integrity in closed-loop|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > AEROSPACE ENGINEERING (090100) > Satellite Space Vehicle and Missile Design and Testing (090108)|
|Divisions:||Current > Schools > School of Civil Engineering & Built Environment|
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Current > Research Centres > Smart Transport Research Centre
|Copyright Owner:||Copyright 2012 Journal of Systems Engineering and Electronics|
|Deposited On:||18 Apr 2012 09:27|
|Last Modified:||21 Oct 2012 19:13|
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