| 基追踪在齿轮损伤识别中的应用 |
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| 引用本文： | 冯志鹏,朱萍玉,刘立,张文明.基追踪在齿轮损伤识别中的应用[J].北京科技大学学报,2008,30(1):84-89. |
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| 作者姓名： | 冯志鹏 朱萍玉 刘立 张文明 |
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| 作者单位： | 1. 北京科技大学车辆工程研究所,北京,100083
2. 湖南科技大学机械设备健康维护省重点实验室,湘潭,411201 |
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| 基金项目： | 国家自然科学基金资助项目(No.50705007)，湖南省机械设备健康维护重点实验室开放基金资助项目(No.KFJJ0505) |
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| 摘 要： | 针对齿轮的振动特点,设计了复合过完备时频字典,利用基追踪方法在匹配信号特征结构、直接提取特征信息方面的优势分析了齿轮箱的现场测试振动信号.根据基追踪分解结果,在时频联合域内提取了齿轮局部损伤的周期性冲击特征,识别了齿轮点蚀缺陷.与短时Fourier变换和小波变换等时频分析方法进行了对比分析,验证了基追踪检测齿轮损伤的有效性.
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| 关 键 词： | 齿轮 故障诊断 基追踪 时频分析 |
| 收稿时间： | 2007-02-12 |
| 修稿时间： | 2007-11-09 |
Application of basis pursuit to gear damage detection |
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| FENG Zhipeng,ZHU Pingyu,LIU Li,ZHANG Wenming.Application of basis pursuit to gear damage detection[J].Journal of University of Science and Technology Beijing,2008,30(1):84-89. |
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| Authors: | FENG Zhipeng ZHU Pingyu LIU Li ZHANG Wenming |
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| Abstract: | Regarding the characteristics of gear vibration,a compound over-complete time-frequency dictionary was designed.Basis pursuit,which is effective in matching the characteristic structure of signals globally and extracting the time-frequency information directly,was employed to analyze the vibration signals of both a healthy gearbox and a faulty one.Periodic impacts characterizing the vibration of localized damaged gears were extracted in the joint time-frequency domain,and gear tooth pitting was identified.In comparison with traditional time-frequency analysis methods,such as short time Fourier transform and wavelet transform,basis pursuit is effective in detecting gear damage. |
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| Keywords: | gear fault diagnosis basis pursuit time-frequency analysis |
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