Research and Design of Hierarchical FDIR in Spacecraft
A method for designing hierarchical fault detection, isolation and recovery (FDIR) is proposed in this paper for the limited visible period of in-orbit spacecraft. The hierarchical FDIR design uses the highly integrated in-orbit autonomous operation of CAST2000 platform satellite including centralized management in system level, autonomous control in subsystem level and redundancy design in unit level to optimize satellite FDIR design and structure. The design is widely used in CAST2000 platform satellite and verified in system level performance test and in-orbit operation. The verification shows hierarchical FDIR could reduce adverse effects of in-orbit failure and support the satellite stable operation.
KeywordsHierarchical fault detection Isolation and recovery (FDIR) In-orbit autonomous operation Safety mechanisms
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