| 基于Hilbert-Huang变换和盲源分离的滚动轴承耦合故障诊断方法 |
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| 引用本文： | 乔保栋,陈果,曲秀秀.基于Hilbert-Huang变换和盲源分离的滚动轴承耦合故障诊断方法[J].飞机设计,2011,31(3):37-43. |
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| 作者姓名： | 乔保栋 陈果 曲秀秀 |
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| 作者单位： | 南京航空航天大学民航学院; |
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| 基金项目： | 国家自然科学基金资助项目(50705042); 航空科学基金资助项目(2007ZB52022)资助 |
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| 摘 要： | 结合Hilbert-Huang变换和盲源分离的优点,提出一种基于Hilbert-Huang变换和盲源分离的滚动轴承耦合故障诊断方法。该方法首先对滚动轴承故障信号进行EMD分解（经验模态分解）,得出各个本征模态函数IMF,并对IMF进行包络解调,然后用盲源分离方法对所得到的解调信号进行盲源分离,最后对盲分离后的信号进行频谱变换,从频谱图上可以清晰地观察出滚动轴承的故障特征频率。本文建立了转子-滚动轴承故障实验台,模拟了滚动轴承耦合故障,应用本文方法进行了实例分析,结果充分表明了本文方法较单一Hilber-Huang变换具有更好的降噪能力,更加突出了滚动轴承故障特征。
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| 关 键 词： | 转子 滚动轴承 故障诊断 Hilbert-Huang变换 盲源分离 |
A Comprehensive Analysis Method of Ball Bearing Coupling Faults Based on Hilbert-Huang Transform and Bind Source Separation |
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| QIAO Bao-dong,CHEN Guo,QU Xiu-xiu.A Comprehensive Analysis Method of Ball Bearing Coupling Faults Based on Hilbert-Huang Transform and Bind Source Separation[J].Aircraft Design,2011,31(3):37-43. |
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| Authors: | QIAO Bao-dong CHEN Guo QU Xiu-xiu |
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| Institution: | QIAO Bao-dong,CHEN Guo,QU Xiu-xiu(College of Civil Aviation,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China) |
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| Abstract: | Combining the advantages of Hilbert-Huang transform and blind source separation,a comprehensive analysis method of ball bearing coupling faults features extraction is proposed.Firstly,EMD(Empirical Mode Decomposition) is used to decompose the rolling element bearing fault signal.And each intrinsic mode function(IMF) is obtained which is demodulated by Hilbert transform.Secondly,the blind source separation is used to achieve the separation of ball bearing fault signal.Thirdly,spectrum analysis is carried out... |
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| Keywords: | rotor rolling element bearing fault diagnosis Hilbert-Huang transform(HHT) blind source separation |
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