| 基于分数阶Wigner分布的机械故障诊断方法研究 |
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| 引用本文： | 刘立州,李志农,肖尧先.基于分数阶Wigner分布的机械故障诊断方法研究[J].噪声与振动控制,2009,29(4):46-49. |
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| 作者姓名： | 刘立州 李志农 肖尧先 |
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| 作者单位： | 1. 郑州大学,机械工程学院,郑州,450001
2. 南昌航空大学,航空与机械工程学院,南昌,330063 |
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| 基金项目： | 国家自然科学基金，河南省教育厅自然科学基金 |
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| 摘 要： | 为采用分数阶Wigner分布的机械故障诊断新方法，讨论了分数阶Wigner分布中最优分数阶的选择。仿真研究表明，分数阶Wigner分布优于传统的Wigner分布，分数阶Wigner分布能有效地抑制交叉项干扰。将提出的方法应用到轴承故障诊断中，实验结果验证了提出的方法的有效性。
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| 关 键 词： | 振动与波 分数阶Fourier变换 分数阶Wigner分布 故障诊断 |
Fault Diagnosis of Machinery Based on Fractional-Order Wigner Distribution |
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| LIU Li-zhou,LI Zhi-nong,XIAO Yao-xian.Fault Diagnosis of Machinery Based on Fractional-Order Wigner Distribution[J].Noise and Vibration Control,2009,29(4):46-49. |
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| Authors: | LIU Li-zhou LI Zhi-nong XIAO Yao-xian |
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| Affiliation: | LIU Li-zhou , LI Zhi-nong, XIAO Yao-xian ( 1. School of Mechanical Engineering, Zhengzhou University, Zhengzhou 450001, China; School of Aeronautical and Mechanical Engineering, Nanchang Hangkong University, Nanchang 330063, China) |
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| Abstract: | The definition and algorithm of fractional-order Wigner distribution is introduced. A new machinery fault diagnosis method based on the fractional-order Wigner distribution is proposed. The choice of the optimal fractional order is discussed. The simulation result shows that the fractional-order Wigner distribution is superior to the traditional Wigner distribution, and can effectively suppress the interference from the intersect terms in the Wigner distribution. Finally, the proposed method is successfu-lly applied to the fault diagnosis of bearings. Experimental result also verifies the validity of the proposed method. |
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| Keywords: | vibration and wave fractional-order Fourier transform fractional-order Wigner distribution fault diagnosis |
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