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http://dx.doi.org/10.5139/JKSAS.2009.37.12.1225

Design of Fault Isolator of Satellite Reaction Wheel System Using Dual Filter and Multi-hypothesis Extended Kalman Filter  

Choi, Kwang-Rok (서울대학교 기계항공공학부 대학원)
Park, Chan-Gook (서울대학교 기계항공공학부)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.37, no.12, 2009 , pp. 1225-1231 More about this Journal
Abstract
One reaction wheel cluster of satellite usually has four reaction wheels. Each wheel is not arranged parallel to the attitude axis of satellite. Therefore, if one reaction wheel is broken, it is very hard to isolate the fault except using the sensors of wheel itself. In this paper, the isolator of satellite reaction wheel cluster is designed. Using a dual filter, FDP(Fault Detection Parameter) is made to detect fault, and using a multi-hypothesis extended Kalman filter, fault isolation of wheel cluster is done. We verify the improvement of isolation performance of wheel cluster by simulation with 4-reaction wheel cluster.
Keywords
Satellite; Reaction Wheel; Fault Isolation; Dual Filter; MH-EKF;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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