基于故障树分析法的APU故障诊断研究

APU Fault Diagnosis Research Based on Fault Tree Analysis Method

故障树分析(FTA)是故障分析和故障诊断中广泛应用的一种方法。结合APU的工作特性,对APU启动困难的原因进行了分析,建立APU启动困难故障树,并对故障树的基本原因事件进行了定性、定量分析,进而提出了排除APU故障的方法,以达到预测与预防故障发生的目的。

Fault tree analysis （FTA） is a widely -used method for failure analysis and fault diagnosis. Combining with APU＇ s working characters, the author analyzes the causes of starting difficukies, builds APU starting difficulty fault tree, and also gives a qualitative and quantitative analysis of basic causes of fault tree. It finally points out the APU fault suggestions to predict and prevent failure occurring.