Abstract: The function of engine performance monitoring and diagnosis system(EPMDS)were introduced.The design ideas of the software system was described.The flowchart diagram of the system was given.It focused on practical application of gas path parameter analysis method(GPPAM)in the missile turbojet engine’s faulty diagnosis.The diagnosis method was proved to be effective by numerical experiments.

Key words: Turbojet engine,Condition monitoring,Faulty diagnosis;Software development

摘要： 介绍了发动机性能监视与诊断系统的功能 ,并讲述了软件系统总体设计方案 ,给出了软件系统流程图 ,论述了气路参数分析法在某弹用涡喷发动机故障诊断中的具体运用 ,通过数值试验表明了诊断方法的有效性。

关键词: 涡轮喷气发动机;状态监视;故障诊断;软件开发