燃烧室声载荷时域信号预测自回归模型——时域Monte Carlo法预测结构声疲劳

Autoregresive Mode for Predicton of Time Domain Signal of Combustor Acoustic Load --Predicton of Structural Acoustic Fatigue with Time Domain Monte Carlo Approach

利用航空发动机燃烧室噪声测试数据,采用时间序列自回归滑动平均分析方法建立了燃烧室噪声及动压预测模型ARMA(17,16),并用其对噪声时间历程进行了最佳预测。

Using autoregresive moving average analysis approach, the ARMA(17,16) model for prediction of com-bustor noise and dynamic pressure was set up based on test data of an aeroengine combustor. The model can be used to predict time history of combustion noise.