摘要
故障树分析(FTA)是概率安全评价方法(PSA)的主要方法,故障树建模则是整个分析过程最基本也是最繁琐的一个过程。而PSA主要应用在对可靠性要求极高的系统上,诸如航天航海系统和核电厂数字化仪控系统。这类系统往往规模大、结构复杂、相关性高,对其进行故障树建模的工作艰巨而繁琐。人为完成将会耗费大量人力物力,且正确性无法保障。通过开发故障树自动建模软件,使故障树建模过程自动化,减少PSA分析的前期准备时间,提高PSA分析的效率,降低人因失误的概率。
FauIt tree anaIysis is the main way of ProbabiIity safety assessment(PSA),and FT modeIing is the most basic and com-pIicated process among the whoIe anaIysis.WhiIe,PSA is mainIy appIied to systems which require high reIiabiIity,such as space navigation systems and nucIear power pIant I&C systems.This kind of systems are usuaI y Iarge,compIete and of high correIation,which makes it hard and tedious to modeI them.It wiI cost huge manpower and materiaI resources if done by human,and cannot assure the accuracy.
出处
《工业控制计算机》
2015年第1期89-91,共3页
Industrial Control Computer