Vague故障树的NMOHEMS机载单元模糊可靠性分析  

Reliability Analysis of Airborne Unit of NMOHEMS Based on Vague Fault Tree

作　　者：翁兴国[1,2] 叶松[2] 王晓蕾[2] 焦冰[2] 陈振涛[2] 

机构地区：[1]陆军航空兵学院,北京101123 [2]解放军理工大学气象海洋学院,南京211101

出　　处：《火力与指挥控制》2014年第1期27-32,共6页Fire Control & Command Control

基　　金：国家自然科学基金(40976062);江苏省自然科学基金(BK2012513);解放军理工大学基础理论研究基金资助项目

摘　　要：分析了NMOHEMS机载单元进行可靠分析的重要性。概念设计阶段,故障树分析方法不能解决系统可靠性数据的模糊性和匮乏性问题,提出将Vague集理论和专家评估模式引入到故障树分析中,建立了系统的Vague模糊故障树。专家使用三角形Vague集评估底事件的模糊可靠性,评估过程中使用模糊隶属度区间而不是单变量隶属度描述事件的模糊性。最后,基于顶事件的发生概率和底事件模糊重要度的分析结果,提出了广义可靠性优化设计方案。设计结果表明:提出的方法提高了可靠性设计和分析的效率。The importance of reliability analysis of airborne unit is presented. In the phase of conceptual design,it is difficult to resolve the fuzziness and deficiency of reliability data using traditional fault tree analysis. Vague set and the experts group estimation are introduced into fault tree analysis and Vague fault tree analysis of the system is established. Bottom events are represented by triangle Vague sets and fuzzy membership interval not vague is adopted to describe fuzzy membership degree of events in the course of estimation. Finally,general reliability optimization design project is proposed based on occurrence probability of the top event and the fuzzy importance of the bottom events. The results indicate that the efficiency of reliability design and analysis are enhanced.

关 键 词：机载单元 Vague故障树 概念设计 可靠性分析 

分 类 号：TP802.1[自动化与计算机技术—检测技术与自动化装置]