摘要
在对多态系统进行可靠性分析时 ,由于很难精确地估算元素各个状态的概率 ,人们常常利用模糊隶属函数及概率区间来表示这些概率。介绍了用模糊及区间模型估算多态系统可靠性的方法 ,并介绍了元素不确定性重要度的算法。在LevV .Utkin提出的元素不确定性重要度算法基础之上 ,提出了不确定性重要度的改进算法。改进算法不仅全面考虑了区间概率的不同含义 。
Since it is very difficult to estimate precise probabilities of component states in the reliability analysis of a multistate system, fuzzy membership function and interval description can be used to describe these probabilities. This paper describes the me thod that not only call estimate multistate system reliability in the fuzzy and interval forms, but also compute component uncertainty importance. Based on the uncertainty importance algorithm proposed by Lev V. Utkin, a new mcthod to calculate uncertainty importance is presented. It considers different meanings of probability interval and can improve the precision and in reliability analysis confidence.\;
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2001年第4期99-102,共4页
Systems Engineering and Electronics
基金
航空科学基金资助课题! (96J5 40 0 9)
