摘要
装备发生故障时,可采用模糊推理和评判进行诊断.由于航空装备使用的特殊性,对诊断中的模糊推理和评判方法进行了改进.针对基于案例的诊断方法的局限,利用故障树和数据库实时概率统计确定权重的方法来选择哪些症状和权重,解决了故障现象与故障原因之间相互交叉的多故障诊断问题,并且可以不断地扩充案例来增加诊断的可靠性.最后通过一个案例说明了该方法的可行性.
Using fuzzy reasoning and evaluation to diagnose the faulty equipments has its own limits based on the cases. The method of fuzzy reasoning and evaluation to diagnose the faulty is improved for the using peculiarity of aero equipments. While using the fault tree and real probability statistic of database can elect symptoms and weights, and the problems of mutually crossed multiple faults diagnose between the fault-phenomenon and fault-reason can be solved, And it＇s dependability is being increased by enlarging the cases continuously. After that,a practical case is given to show the feasibility of the method.
出处
《西安工业学院学报》
2005年第2期126-129,共4页
Journal of Xi'an Institute of Technology
关键词
模糊推理和评判
故障诊断
故障树分析
权重
fuzzy reasoning and evaluation
fault diagnosis
fault tree analysis
weight
