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阐述了传统模糊可靠性理论在引入模糊工作状态后,造成因素处理方法和分析模型的高度复杂性,以及计算方法过于烦琐从而难以为工程实际所应用的深刻原因,这一原因对于逻辑关系较为复杂的旁联系统尤为突出。认为在实际工程系统中,结构单元和系统可以简化为具有“安全-中介-失效”三级工作模式,这里的“中介”即为“故障”。这时,系统及其单元均具有安全、中介、失效三种工作状态。采用所提出的具有“安全-中介-失效”三级工作模式的结构单元可靠性分析方法,建立了具有安全、中介、失效三种工作状态的旁联系统的可靠性向量计算模型。可靠性向量分析的结果是求出旁联系统的安全概率(可靠度)PR、中介概率PM和失效概率PF,它们联合起来构成可靠性向量[PR,PM,PF],简记为[R,M,F]。该文给出了一个简单算例。
The reason why the traditional fuzzy reliability theory introduces fuzzy work state is that it is difficult to apply the profound reason that the calculation method is too cumbersome to engineering practice due to the complexity of processing methods and analysis models. The cascade system is particularly prominent. It is considered that in the actual engineering system, the structural elements and system can be simplified to the three-level working pattern of “safety-mediation-failure”, where “agent” is “fault”. At this time, the system and its units are safe, intermediary, failure of three working conditions. Based on the proposed reliability analysis method of structural elements with three-level working mode of “safety-mediation-failure”, a reliability vector calculation model of a cascade system with three working states of safety, mediation and failure is established. The result of the reliability vector analysis is to find the safety probability (reliability) PR, the intermediate probability PM and the failure probability PF of the side cascade system, which together form the reliability vector [PR, PM, PF], abbreviated as [R, M, F]. This article gives a simple example.