基于因果图最小割集和最小径集在故障系统中的诊断

因果图主要用于故障诊断和故障分析，运用因果图模型的原理和方法，对基于因果图最小割集和最小径集的定量故障诊断方法进行研究，并给出飞行器发动机滑动压力指示警告系统的诊断实例，为系统故障源的查找提出简洁有效的方法. 首先将因果图转换成因果树，再定义最小割集和最小径集，最后结合实例给出诊断方案步骤.

A Diagnosis Approach Based on Minimal Cut Sets and Minimal Path Sets of Causality Diagram

Causality diagram is mainly used for fault diagnosis and fault analysis. The paper，by using the principles and methods of causal graph models conducts a quantitative research on minimal cut sets and minimal path sets fault diagnosis method based on causal diagram，and gives instruction in aircraft engines sliding pressure warning system diagnosis example，and proposes a simple and effective mothod to find the source failure of the proposed system is. Firstly，the causality diagram is converted into a causality tree，then the minimal cut sets and minimal path sets are defined，and finally the steps of the diagnostic programs are given by combining examples.