改进的模糊事故树分析方法  

An Improved Fuzzy Fault Tree Analysis Method

作　　者：卢雷[1] 肖文杰[1] 

机构地区：[1]空军雷达学院,武汉430019

出　　处：《电光与控制》2010年第11期93-96,共4页Electronics Optics & Control

摘　　要：针对传统模糊事故树分析中语言值转换途径和模糊重要度计算方法的不足,进行了相应的改进。新的语言值转换途径使语言值所对应的概率数量级合理化,避免了专家评价语言值的单一化。新的模糊重要度计算方法解决了中值法中最小割集所含基本事件模糊重要度相同的问题,考虑了基本事件发生概率的不同对系统顶事件的影响。最后,引用了简单的实例,证明了改进的可行性,为模糊事故树分析方法的改进提供了一种有益的思路。Some improvements were made to the traditional fuzzy fault tree analysis method considering its shortcomings in language value conversion approach and fuzzy importance calculation.The new language value conversion method could make the scalar grade of probability more reasonable,avoiding the simplification of expert＇s language value.The new fuzzy importance calculating method solved the problem of median method that the basic events in minimum cut sets have the same fuzzy importance degree.Finally,a simple example was used to prove the feasibility of the improvements.

关 键 词：模糊事故树分析 语言值转换 模糊重要度 

分 类 号：V247.2[航空宇航科学与技术—飞行器设计]