| 高阶时频分布在滚动轴承故障诊断中的应用研究 |
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| 引用本文： | 郭雄伟. 高阶时频分布在滚动轴承故障诊断中的应用研究[J]. 科学技术与工程, 2010, 10(2) |
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| 作者姓名： | 郭雄伟 |
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| 作者单位： | 1. 昆明理工大学机电学院,昆明,650093
2. 红塔烟草(集团)有限责任公司,玉溪,653100 |
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| 基金项目： | 国家自然科学基金(619220080037)资助 |
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| 摘 要： | 滚动轴承故障信号是非高斯、非线性、非平稳信号,由于调制性,使用幅值谱分析方法无法找到轴承故障频率。将高阶时频分布——主要是Wigner双谱分析方法应用于滚动轴承的故障诊断,计算滚动轴承振动信号的高阶时频分布,并对其沿时间轴切片,分析了切片的幅值谱。针对不同故障轴承,对其振动信号幅值谱、高阶时频分布及其切片谱的对比分析表明,高阶时频及其切片谱性能优于幅值谱。
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| 关 键 词： | 高阶时频分布 切片谱 滚动轴承 故障诊断 |
| 收稿时间： | 2009-10-14 |
| 修稿时间： | 2009-10-29 |
Rolling Bearing Fault Diagnosis Based on Higher-order Time-frequency Distribution |
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| guo xiong wei. Rolling Bearing Fault Diagnosis Based on Higher-order Time-frequency Distribution[J]. Science Technology and Engineering, 2010, 10(2) |
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| Authors: | guo xiong wei |
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| Affiliation: | Faculty of Mechanical & Electrical Engineering/a>;Kunming University of Science & Technology/a>;Kunming 650093/a>;P.R.China/a>;Hongta Tobacco Group1/a>;Yuxi 653100/a>;P.R.China |
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| Abstract: | Vibration signals of defect rolling bearings are non-Gauss,non-linear and non-stationary.Fault characteristic frequencies can not be found via amplitude spectrum analysis because of modulation.Higher-order time-frequency distribution,mainly Wigner bispectrum is proposed in fault diagnosis of rolling bearings.Wigner bispectrum slice along time axis and its amplitude spectrum are given.Amplitude spectrum,higher-order time-frequency distribution and Wigner bispectrum slice spectrum of different fault rolling b... |
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| Keywords: | higher-order time-frequency distribution slice spectrum rolling bearing fault diagnosis |
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