| 时频分析在旋转机械故障诊断中的应用 |
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| 引用本文： | 马辉,赵鑫,赵群超,闻邦椿.时频分析在旋转机械故障诊断中的应用[J].振动与冲击,2007,26(3):61-63. |
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| 作者姓名： | 马辉 赵鑫 赵群超 闻邦椿 |
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| 作者单位： | 1. 东北大学机械工程与自动化学院,沈阳,110004
2. 辽宁省安全科学研究院,沈阳,110004 |
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| 摘 要： | 针对旋转机械发生故障时振动信号的不平稳性，利用时频分析中的小波尺度图和再分配后的小波尺度图对点碰摩、松动、裂纹和油膜失稳故障进行对比分析，结果表明再分配小波尺度图比传统小波尺度图，具有更高的时频分辨率，可以更好地识别转子早期故障。
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| 关 键 词： | 时频分析 旋转机械 故障诊断 |
| 修稿时间： | 03 7 2006 12:00AM |
APPLICATION OF TIME-FREQUENCY ANALYSIS TO ROTATING MACHINERY FAULT DIAGNOSIS |
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| Ma Hui,Zhao Xin,Zhao Qun-chao,Wen Bang-chun.APPLICATION OF TIME-FREQUENCY ANALYSIS TO ROTATING MACHINERY FAULT DIAGNOSIS[J].Journal of Vibration and Shock,2007,26(3):61-63. |
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| Authors: | Ma Hui Zhao Xin Zhao Qun-chao Wen Bang-chun |
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| Abstract: | Considering unstable characteristics of vibration signals with rotor faults, vibration signals with point rub-impact, looseness, crack, and oil-film instability faults are analyzed using wavelet scalogram and reassigned wavelet scalogram of time-frequency analysis for comparison. The results show that the reassigned wavelet scalogram has higher time-frequency resolution and can preferably identify initial failure of rotor systems. |
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| Keywords: | time-frequency analysis rotating machinery fault diagnosis |
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