| 小波分析在柴油机噪声分析中的应用 |
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| 引用本文： | 刘伟,王昊,左言言,曾发林,罗雁.小波分析在柴油机噪声分析中的应用[J].江苏大学学报(自然科学版),2000,21(5):34-37. |
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| 作者姓名： | 刘伟 王昊 左言言 曾发林 罗雁 |
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| 作者单位： | 江苏理工大学汽车与交通工程学院!江苏镇江212013 |
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| 基金项目： | 原机械部自然基金资助项目 !(972 5 0 813) |
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| 摘 要： | 简述了小波分析的基本原理 ,并把小波分析方法应用到柴油机噪声信号的分析中 ,即通过二进离散小波变换 ,把实际噪声信号进行多层小波分解 ,使突变冲击信号和具有一定频率特征的平稳周期性信号得到良好的图形显示 ,为噪声分析和采取降噪措施提供了理论依据
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| 关 键 词： | 柴油机 小波分析 噪声分析 |
Application of Wavelet Analysis to the Noise Analysis of Diesel Engine |
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| LIU Wei,WANG Hao,ZUO Yan yan,ZENG Fa lin,LUO Yan.Application of Wavelet Analysis to the Noise Analysis of Diesel Engine[J].Journal of Jiangsu University:Natural Science Edition,2000,21(5):34-37. |
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| Authors: | LIU Wei WANG Hao ZUO Yan yan ZENG Fa lin LUO Yan |
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| Abstract: | The principle of wavelet is presented and the method of wavelet analysis is applied to noise signal analysis of a diesel engine Multi level wavelet decomposition of real signals is performed by dyadic discrete wavelet transform As a result, the impacting signal which changes suddenly and the stable periodic signal which takes on some property of certain frequency are better illustrated, which provides a theoretical basis for the analysis of noise signals and the measures of noise reduction |
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| Keywords: | diesel engine wavelet analysis noise analysis |
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