A New Computer-Aided Fault Tree Synthesis Method
A New Computer-Aided Fault Tree Synthesis Method
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发表时间：
2005
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通讯作者：
Wu Chong-guang
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作者：
Wu Chong-guang
故障树分析（FTA）是过程风险分析（PRA）的有效方法，计算机辅助故障树综合是非常重要的。本文提出了一种基于图模拟和数据挖掘的综合方法。图模型是一种深度知识，它可以用来表达复杂的因果关系，并且具有非常大的包含过程潜在信息的容量。因此，它特别适合应用于安全领域。深入研究了故障传播机制和故障树的内在原理。从本质上讲，故障诊断、HAZOP和故障树分析的理论基础是相同的。即对系统进行静态定性仿真与分析。通过静态定性仿真（图仿真），得到故障场景模式。在此基础上，开发了图形建模推理平台。在该平台上进行故障场景分析，得到故障场景模式。然后从中抽象出关联规则，最终连接形成故障树。以离心泵和液位计系统为例，说明了该方法的适用性和有效性。
FTA(Fault Tree Analysis) is an effective method for PRA(Process Risk Analysis) and computer-aided fault tree synthesis is very important.In this paper,we present a new synthesis method based on graph simulation and data mining. Graph model is a deep knowledge,it can be used to express the complex cause and effect relations,and has very large capacity of containing process potential information.So,it is especially suitable for application in safety field.We deeply study on the fault propagation mechanism and the intrinsic principle of fault tree.Essentially,the theory fundament for fault diagnosis,HAZOP and fault tree analysis is the same.That is the static state qualitative simulation and analysis for the system.Through the static state qualitative simulation(graph simulation),the fault scenario pattern is got.Based on it,a graph modeling inference platform is developed.Fault scenario analysis is performed on this platform and the fault scenario pattern is obtained.Then the association rules are abstracted from it and finally connect to form the fault tree.We put forward a centrifuge pump and level system to show the synthesis process and demonstrate the applicability and efficiency of this method.