中国空间科学技术2011，Vol.31Issue(4)：54-63,10.DOI:10.3780/j.issn.1000-758X.2011.04.008
定量与定性相结合的动量轮故障可诊断性评价
Quantitative and Qualitative Model Based Fault Diagnosability Evaluation of Momentum Wheel
摘要
Abstract
The fault diagnosability evaluation method of the momentum wheel based on the quantitative and qualitative model was proposed to enhance its fault diagnosis performance. Considering the momentum wheel model and its controller model, the momentum wheel system model was obtained and it included the influence of three types of faults, namely measurement-related, driven-related and the controller-related faults. By judging whether the transfer function from the fault to the output equals to 0 or whether different faults have different transfer functions, the fault detect-ability and isolability discriminant conditions were obtained and applied to the momentum wheel. Some problems related to the method based on the quantitative model were concluded. To the unisolable fault sets, the qualitative-model-based fault diagnosability evaluation method was addressed, including the fault-symptom incidence matrix establishment by considering the relationship of the function modules, the FMEA and its data analysis. Finally, the quantitative indexes were proposed as well as the diagnosable degree of the momentum wheel which offered some important information to the fault diagnosability design.关键词
动量轮/故障可诊断性评价/故障可检测性/故障可分离性/卫星Key words
Momentum wheel/Fault diagnosability evaluation/Fault detectability Fault isolability/Satellite引用本文复制引用
刘文静,刘成瑞,王南华,王大轶..定量与定性相结合的动量轮故障可诊断性评价[J].中国空间科学技术,2011,31(4):54-63,10.基金项目
国家自然科学基金(61004073. 60874055),CAST创新基金(CAST201 1-6)资助课题 （61004073. 60874055）
