| 奇异值分解对轴承振动信号中调幅特征信息的提取 |
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| 引用本文： | 赵学智,叶邦彦,林颖.奇异值分解对轴承振动信号中调幅特征信息的提取[J].北京理工大学学报,2011,31(5):572-577. |
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| 作者姓名： | 赵学智 叶邦彦 林颖 |
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| 作者单位： | 华南理工大学,机械与汽车工程学院,广东,广州,510640 |
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| 基金项目： | 国家自然科学基金资助项目，中央高校基本科研业务费专项资金资助项目，广州市科技计划项目 |
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| 摘 要： | 为了从复杂的轴承振动信号中提取微弱的故障信息,提出了一种基于奇异值分解的特征提取方法.分析了基于奇异值分解的信号分解和特征提取原理,指出其信号分解的实质是一种线性叠加分解,并通过对轴承振动信号构造Hankel矩阵,利用奇异值分解处理后得到多个分量信号,并选择前面一定数目的分量信号进行叠加,准确地提取到了因滚道损伤引起的调幅特征,进而研究分析了不同数目分量所获得的调幅特征效果,并与小波变换进行比较.研究结果表明SVD对调幅特征的提取效果优于小波变换.
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| 关 键 词： | 奇异值分解 轴承振动 调幅信号 小波变换 |
| 收稿时间： | 2010/3/15 0:00:00 |
Amplitude Modulation Feature Extraction of Bearing Vibration Signal Using Singular Value Decomposition |
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| ZHAO Xue-zhi,YE Bang-yan and LIN Ying.Amplitude Modulation Feature Extraction of Bearing Vibration Signal Using Singular Value Decomposition[J].Journal of Beijing Institute of Technology(Natural Science Edition),2011,31(5):572-577. |
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| Authors: | ZHAO Xue-zhi YE Bang-yan and LIN Ying |
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| Institution: | ZHAO Xue-zhi,YE Bang-yan,LIN Ying(School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou,Guangdong 510640,China) |
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| Abstract: | In order to extract the faint fault information from complicated vibration signal of bearing,a feature extraction method based on singular value decomposition(SVD) is proposed.The principle of SVD based signal decomposition and feature extraction is analyzed,and it is indicated that the essence of signal decomposition of SVD is linear addition decomposition.On this basis,a Hankel matrix is constructed for bearing vibration signal,and by SVD processing a group of component signals are obtained,then some of f... |
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| Keywords: | singular value decomposition bearing vibration amplitude modulation signal wavelet transform |
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