中国机械工程2016，Vol.27Issue(24)：3332-3337,6.DOI:10.3969/j.issn.1004-132X.2016.24.012
局部特征尺度分解结合局部均值解调的齿轮故障诊断
Gear Fault Diagnosis Based on LCD and LME Demodulation Approach
摘要
Abstract
In order to diagnose the gear fault accurately,according to the amplitude-modulated and frequency-modulated characteristics of the gear fault vibration signals a modle was proposed based on LCD and LME.Firstly,the original vibration signals were disposed by LCD.Secondly,the intrinsic mode components of LCD were envelope demodulated by LME.Finally,the gear faults were diag-nosed by the instantaneous frequency spectrum.The analysis of the simulated data shows that the LME mode may get more accurate results of instantaneous amplitude and instantaneous frequency than that of Hilbert mode and empirical AM-FM decomposition mode.The analysis of gear fault data shows that the method based on LCD and LME may realize the fault diagnosis effectively.关键词
局部特征尺度分解/局部均值解调/瞬时频率谱/齿轮故障诊断Key words
local characteristic-scale decomposition(LCD)/local mean envelope(LME)demodu-lation/instantaneous frequency spectrum/gear fault diagnosis分类
信息技术与安全科学引用本文复制引用
崔伟成,许爱强,李伟,孟凡磊..局部特征尺度分解结合局部均值解调的齿轮故障诊断[J].中国机械工程,2016,27(24):3332-3337,6.基金项目
国家部委预研基金资助项目(9140A27020214JB1446) （9140A27020214JB1446）
