转子系统油膜失稳故障的时频特征分析

马 辉;李朝峰;轩广进;闻邦椿

振动与冲击 ›› 2010, Vol. 29 ›› Issue (2) : 193-195,.

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振动与冲击 ›› 2010, Vol. 29 ›› Issue (2) : 193-195,.
论文

转子系统油膜失稳故障的时频特征分析

  • 马 辉1;李朝峰1;轩广进2;闻邦椿1

作者信息 +

Time-frequency Feature Analysis of Oil-film Instability Fault in Rotor Systems

  • MA Hui1;LI Chao-feng1;XUAN Guang-jin2;Wen Bang-chun1
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摘要

采用转子试验台对油膜失稳故障进行模拟,通过调整转盘厚度和转轴长度来改变试验参数,最后采集两组不同参数下的发生油膜失稳的振动信号,通过三维谱图、重排小波尺度图和轴心轨迹对其故障特征进行提取,得到发生油膜失稳故障的一些新的时频特征,并对其产生机理进行了分析,得出的结论可为油膜失稳故障诊断提供理论参考。

Abstract

Oil-film instability fault was simulated by using a rotor test rig, and vibration signals of the two groups were collected by adjusting thickness of disc and shaft length. Fault features were extracted by using spectrum cascades, reassigned wavelet scalograms and rotor trajectories. Some new interesting features are obtained by feature analysis and fault mechanism corresponding to theses features is explained. The results will provide theoretical references for diagnosing this kind of fault.

关键词

时频分析 / 转子系统 / 重排小波尺度图 / 三维谱图 / 轴心轨迹

Key words

Time-frequency analysis / rotor system / reassigned wavelet scalogram / spectrum cascade / rotor trajectory.

引用本文

导出引用
马 辉;李朝峰;轩广进;闻邦椿. 转子系统油膜失稳故障的时频特征分析[J]. 振动与冲击, 2010, 29(2): 193-195,
MA Hui;LI Chao-feng;XUAN Guang-jin;Wen Bang-chun. Time-frequency Feature Analysis of Oil-film Instability Fault in Rotor Systems[J]. Journal of Vibration and Shock, 2010, 29(2): 193-195,

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