| 航空发动机燃烧室声载荷自激励门限自回归仿真模型 |
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| 引用本文： | 吴兆奇,关蓬莱,吴晓明.航空发动机燃烧室声载荷自激励门限自回归仿真模型[J].航空发动机,2009,35(1):40-42. |
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| 作者姓名： | 吴兆奇 关蓬莱 吴晓明 |
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| 作者单位： | 1. 承德电视大学,河北承德,067500
2. 沈阳航空工业学院,沈阳,110034 |
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| 摘 要： | 采用自激励门限自回归分析方法，利用航空发动机环形燃烧室测试数据，得到燃烧室噪声声压时间信号自激励门限自回归仿真模型SETAR（2;1;15,14），并与控后非门限的自回归滑动平均模型ARMA（6，5）进行了比较，仿真结果表明，误差方差明显降低。
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| 关 键 词： | 航空发动机 燃烧室噪声 时间信号 门限自回归仿真模型 滞后步长 准则 |
Self-Excited Threshold Auto-Regressive Simulation Model of Aeroengine Combustor Acoustic Loading |
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| Authors: | WU Zhao-qi GUAN Peng-lai WU Xiao-ming |
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| Institution: | 1.Chengde TV University;Chengde 067500;Hebei;China;2.Shenyang Institute of Aeronautical Engineering;Shenyang 110034;China |
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| Abstract: | The self-excited threshold auto-regressive simulation model SETAR(2;1;15,14) of the combustor acoustical pressure time signals was obtained by adopting the self-excited threshold auto-regressive analysis method and applying the experiment datum of the aeroengine annular combustor.The comparison of the simulation results between the model SETAR and the non-threshold auto-regressive slip average model ARMA(6,5) indicates that the error variance of the model SETAR is reduced obviously. |
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| Keywords: | aeroengine combustor noise time signal threshold auto-regressive simulation model hysteresis step criterion |
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