监视参数预测和故障识别法
MONITORING PARAMETER PREDICTION AND FAULT IDENTIFICATION
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摘要: 将时间序列分析方法应用于航空发动机状态监视与故障诊断中, 采用自回归模型, 对监视参数进行趋势预测。进一步将时序分析与模式识别技术相结合, 通过构造判别函数和用参数相关分析法, 识别发动机典型故障。Abstract: The time series analysis method is applied to condition monitoring and fault diagnosis of aero engine.The trending values of monitoring parameters can be predicted by building and estimating auto regressive model.Then the time series analysis and the mode identification technique are combined and through determining classification function and conducting correlation analysis among the parameters,some typical faults of the engine can be identified.
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