| 基于EMD和FFT的齿轮箱故障诊断 |
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| 引用本文： | 贺文杰,Bajole Jtulien,Yoann Plassard,陈汉新,鲁艳军.基于EMD和FFT的齿轮箱故障诊断[J].武汉化工学院学报,2011(1):65-70,95. |
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| 作者姓名： | 贺文杰 Bajole Jtulien Yoann Plassard 陈汉新 鲁艳军 |
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| 作者单位： | 武汉工程大学机电工程学院;法国国立梅斯工程师学院; |
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| 基金项目： | 湖北省教育厅科学技术研究重大项目(Z20101501); 武汉市科技局科技攻关项目(201010621237) |
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| 摘 要： | 提出了一种基于小波包分析（WPA）,经验模态分解（EMD）和快速傅里叶变换（FFT）的齿轮箱故障诊断方法,此方法适合于非线性非稳态信号的自适应分析.首先运用WPA对采集的齿轮箱振动信号进行分解可得到不同频率的子频带;然后对各子频带信号进行EMD,从而得到一定数量的本征模态函数（IMF）;最后选取特定的IMF,对其作FFT可得到相应的功率谱,从而提取齿轮箱故障特征频率,进而对齿轮箱故障模式进行识别和诊断.分析结果表明本文所提议的方法能有效地检测出齿轮箱故障特征频率.
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| 关 键 词： | 齿轮箱 经验模态分解 快速傅里叶变换 故障诊断 |
Gearbox fault diagnosis based on EMD and FFT |
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| HE Wen-jie,BAJOLET Ju-lien,PLASSARD Yoann,CHEN Han-xin,LU Yan-jun.Gearbox fault diagnosis based on EMD and FFT[J].Journal of Wuhan Institute of Chemical Technology,2011(1):65-70,95. |
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| Authors: | HE Wen-jie BAJOLET Ju-lien PLASSARD Yoann CHEN Han-xin LU Yan-jun |
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| Affiliation: | HE Wen-jie1,BAJOLET Ju-lien2,PLASSARD Yoann2,CHEN Han-xin1,LU Yan-jun1(1.School of Mechanical and Electrical Engineering,Wuhan Institute of Technology,Wuhan 430074,China,2.Ecole Nationale d'Ingénieurs de Metz,Metz 57078,France) |
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| Abstract: | Based upon wavelet packet analysis(WPA),empirical mode decomposition(EMD) and fast Fourier transform(FFT),a novel fault diagnosis method of gearbox is proposed in this paper.It is an adaptive signal processing method that is very suitable for non-linear and non-stationary signals.Firstly,WPA is used to decompose the original vibration signals collected from gearbox in order to obtain different frequency bands with various frequencies.Second,EMD is applied to analyze different frequency bands to acquire a fi... |
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| Keywords: | gearbox empirical mode decomposition fast Fourier transform fault diagnosis |
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