| 基于小波包分解的早期碰摩故障诊断研究 |
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| 引用本文： | 宋友,柳重堪,李其汉.基于小波包分解的早期碰摩故障诊断研究[J].北京航空航天大学学报,2003,29(1):87-90. |
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| 作者姓名： | 宋友 柳重堪 李其汉 |
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| 作者单位： | 北京航空航天大学 电子工程系 |
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| 摘 要： | 研究了旋转机械转静件早期碰摩故障信号的检测问题.根据小波包分解能在所有频率范围聚焦,对信号奇异性非常敏感的特性,对比分析了不碰摩和早期碰摩信号的小波包分解细节分量,得出应用小波包分解可实现早期碰摩故障诊断.同时,还研究并实现了碰摩故障的定位问题.
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| 关 键 词： | 故障诊断 碰撞 信号检测 小波包分解 |
| 文章编号： | 1001-5965(2003)01-0087-04 |
| 收稿时间： | 2001-11-01 |
| 修稿时间： | 2001年11月1日 |
Early rub-impact fault diagnosis based on wavelet packet decomposition |
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| Song You,Liu Zhongkan.Early rub-impact fault diagnosis based on wavelet packet decomposition[J].Journal of Beijing University of Aeronautics and Astronautics,2003,29(1):87-90. |
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| Authors: | Song You Liu Zhongkan |
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| Institution: | Dept. of Electronic Engineering, Beijing University of Aeronautics and Astronautics |
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| Abstract: | Rub impact signal detection between rotor and stator is investigated. The features of no rub impact and early rub impact are analysed based on the wavelet packet decomposition, which is sensitive to the singularity of signal and able to offer a richer resolution in frequency band than wavelet decomposition. Results show that the wavelet packet decomposition can be used to detect rub impact signal effectively, and the localization of rub impact faults can be realized with the present method. |
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| Keywords: | fault diagnosis collisions signal detection wavelet packet decomposition |
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