故障樹計算機輔助分析及應(yīng)用研究摘

故障樹計算機輔助分析及應(yīng)用研究

摘要

本文完善了故障樹中主要參數(shù)(最小割集、最小路集、不交化最小割集和不 交化最小路集)之間相互轉(zhuǎn)化的方法．并通過矩陣的運算加以實現(xiàn)；提出了利用

不交化最小路集實現(xiàn)故障樹定量分析的新方法；建立了多種故障樹定性、定量分

，

析的方法，并提出了不同結(jié)構(gòu)故障樹選擇最佳分析方法的原則。眩些新方法的合

、

＼

理應(yīng)用能有效地降低FTA的“NP”困難，為FTA．的簡化提供了新的途徑d

根據(jù)vC++和VB程序設(shè)計語言各自的特點，采用混合語言編程，開發(fā)了

r

Windows操作系統(tǒng)下的故障樹綜合分析軟件。疑過對多種故障樹實例的測試，證

明該軟件具有界面友好、操作簡便、節(jié)省內(nèi)存、運算快捷等優(yōu)點。土

通過對機械和航空系統(tǒng)中的一些實例進行故障分析，證明了本文所建立的分 析方法和應(yīng)用軟件是科學(xué)而有效的，也說明了故障樹分析法(FTA)在機械故障分 析、航空安全性評定等領(lǐng)域的重要性。

關(guān)鍵詞：故障樹分析法割集矩陣’D運算，

N運算?“NP”困難√安全性評定K

The

TheStudy of Personal Computer Aided Fault Tree

Analysis and Application

Abstract

In this paper，the transformation among a fault tree’S main data(minimum cut sets，minimum path sets，non—intersect minimum cut sets and non·intersect minimum path sets)is perfected and realized by matrix operation．And a new method of quantitative analysis is put forward through non—intersect minimum path sets．On the base of above，several methods are built for the use of fault tree qualitative analysis

and quantitative analysis，and rules are made out to choose the applicable methods for

fault treeswith different structure．Therationalapplication of these methodsCan

lower the‘'NP”difficulty,and provide a new approach to simplify FTA．

According to their respective characteristics ofVC++language and VB language， the generally multifunctional software of fault tree analysis is developed by mixed language programs．This software is fully compatible with Windows operation system．

Through testing many examples of fault trees，it is confirmed that the software has

advantages offriendly interface，convenience，saving memory and rapidity．

The methods and the software built in this paper is proved scientific and effective by analyzing some examples in mechanical system and aeronautical system．Thus it shows that fault tree analysis is significant in mechanical fault analysis and aeronauticaI safety assessment．

Key Words：Fault Tree Analysis，Cut Sets Matrix，D Operation， N Operation，“NP”Difficulty,Safety Assessment．

第一章緒論1．1故障樹分析法簡介

第一章緒論

1．1故障樹分析法

創(chuàng)作挑戰(zhàn)賽新人創(chuàng)作獎勵來咯，堅持創(chuàng)作打卡瓜分現(xiàn)金大獎

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