Fault diagnosis of planetary gearboxes via torsional vibration signal analysis
Fault diagnosis of planetary gearboxes via torsional vibration signal analysis
复制标题
基于扭振信号分析的行星齿轮箱故障诊断
DOI：
10.1016/j.ymssp.2012.11.004
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发表时间：
2013-04-01
影响因子：
8.4
通讯作者：
Zuo, Ming J.
中科院分区：
文献类型：
--
作者：
Feng, Zhipeng;Zuo, Ming J.
扭振信号理论上不受行星载体和太阳齿轮旋转引起的时变振动传递路径的调幅效应，因此其频谱结构比横向振动信号简单。因此，利用扭振信号分析对行星齿轮箱进行故障诊断具有潜在的简便和有效的意义。在考虑齿轮的分布式故障（如制造或装配错误）和局部故障（如点蚀、裂纹或单齿断裂）的情况下，给出了扭振信号的显式方程，并推导了传统的傅立叶谱和所提出的振幅包络和瞬时频率解调谱的特征。这些推导不仅可以有效地诊断行星齿轮箱的单齿轮故障，而且可以推广到多齿轮故障的检测和定位。实验验证了信号模型，以及傅里叶谱分析和解调分析方法。(C) 2012 Elsevier Ltd.版权所有。
Torsional vibration signals are theoretically free from the amplitude modulation effect caused by time variant vibration transfer paths due to the rotation of planet carrier and sun gear, and therefore their spectral structure are simpler than transverse vibration signals. Thus, it is potentially easy and effective to diagnose planetary gearbox faults via torsional vibration signal analysis. We give explicit equations to model torsional vibration signals, considering both distributed gear faults (like manufacturing or assembly errors) and local gear faults (like pitting, crack or breakage of one tooth), and derive the characteristics of both the traditional Fourier spectrum and the proposed demodulated spectra of amplitude envelope and instantaneous frequency. These derivations are not only effective to diagnose single gear fault of planetary gearboxes, but can also be generalized to detect and locate multiple gear faults. We validate experimentally the signal models, as well as the Fourier spectral analysis and demodulation analysis methods. (C) 2012 Elsevier Ltd. All rights reserved.