| 随机声载荷时域信号门限自回归模型研究 |
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| 引用本文： | 吴兆奇,关蓬莱,吴晓明.随机声载荷时域信号门限自回归模型研究[J].沈阳航空工业学院学报,2008,25(4). |
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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,辽宁,沈阳,110034 |
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| 摘 要： | 利用航空发动机燃烧室噪声测试数据1],采用门限自回归分析方法建立随机声载荷门限自回归模型SETAR(2;2;30,30),得到令人满意结果,并将拟合和预测均方误差与文献1]非门限的自回归滑动平均模型ARMA(17,16)的结果进行了比较.
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| 关 键 词： | 随机声载荷 门限自回归模型 均方误差 AIC准则 |
Threshold auto - regressive model study on the time domain signal of random acoustic loading |
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| WU Zhao-qi,GUAN Peng-lai,WU Xiao-ming.Threshold auto - regressive model study on the time domain signal of random acoustic loading[J].Journal of Shenyang Institute of Aeronautical Engineering,2008,25(4). |
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| Authors: | WU Zhao-qi GUAN Peng-lai WU Xiao-ming |
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| Abstract: | The model SETAR(2;2;30,30) of random acoustic loading is set up based on test data of the aircraft engine combustor1] using threshold auto-regressive analysis method.The fitting and prediction error of the mean are compared to these of non-threshold Auto-Regressive Moving Average model ARMA(17,16) in the reference 1] and the results is satisfactory. |
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| Keywords: | random acoustic loading threshold auto-regressive model error of the mean square criterion |
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