【摘要】 航空发动机状态的趋势分析,是一种广泛地应用于航空发动机性能监控的分析技术。本文建立了发动机气动热力参数趋势分析的数学模型,着重讨论了有关数据处理中的四个问题:参数的换算;野点的判断和剔除;趋势性的判断和数据的平滑与预测。并将上述模型应用于JT9D发动机的气动热力参数的趋势分析。更多还原

【Abstract】 Trend analysis of jet engines is an analytical technique widely used in engine performance monitoring.The mathematical model for the trend analysis of engine gas dynamic and thermodynamic parame- ters is established in this paper. Four problems concerned with the data processing-conversion of pa- rameters,judgement and rejection of abnormal data,judgement of trend, data smoothing and trend prediction—are discussed. The presented model has been used in the analysis of the JT9D—TRA E engine.更多还原