摘要
通过分析传统事件树分析法在求解复杂系统可靠性时的不足,提出了一种基于二元决策图的事件树分析方法,主要讨论了各支点事件之间存在相关性的异常情况。二元决策图给出了故障树结构的二叉树的逻辑形式,用于描述系统失效的原因,并对系统顶事件进行分析。在对系统进行可靠性分析的过程中,由于不需要将最小割集和质蕴涵项作为中间步骤,从而提高了系统可靠性分析的效率和精度,为大型复杂系统的可靠性分析提供了一条新途径。
When used in analyzing the reliability of complex systems, the traditional ETA（ event-tree analysis）is not adequate. In this paper we propose an ETA based on BDD （binary decision diagrams）. Moreover, attention is paid on the abnormal situation where there is dependency among the branch point events. BDD provide an alternative logic form for the fault-tree structure to express the system failure causes and analyze the top event. During the process of reliability analysis, the MCS and PI are not required as an intermediate stage, so this method improves both the efficiency and accuracy, and it also provides a new approach to reliability analysis of complex systems.
出处
《电子工程师》
2008年第11期25-29,共5页
Electronic Engineer
关键词
二元决策图
事件树分析
故障树分析
最小割集
binary decision diagrams
event-tree analysis
fault-tree analysis
minimal cut set
作者简介
霍红霞（1984-），女，硕士研究生，主要研究方向为通信系统的可靠性技术。
