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行星轮的通过效应或行星架和太阳轮的旋转对啮合振动产生额外的调幅作用,导致横向振动信号的频谱结构非常复杂。扭转振动信号不受这些额外调幅效应的影响,它们的频谱结构更加简单。因此,扭转振动信号分析为行星齿轮箱故障诊断提供了一种有效方法。建立了行星齿轮箱扭转振动信号模型,推导了Fourier频谱、幅值解调谱和频率解调谱的解析表达式,总结了上述频谱的结构特点。应用故障实验数据验证了上述理论分析结果。
The passing effect of the planet wheel or the rotation of the planet carrier and the sun gear creates an additional amplitude modulation effect on the meshing vibration, resulting in a very complicated spectrum structure of the transverse vibration signal. Torsional vibration signals are unaffected by these additional amplitude modulation effects and their spectral structure is simpler. Therefore, torsional vibration signal analysis provides an effective method for planetary gearbox fault diagnosis. The torsional vibration signal model of planetary gearbox is established. The analytical expressions of Fourier spectrum, amplitude demodulation spectrum and frequency demodulation spectrum are deduced. Structural features of the above spectrum are summarized. The application of fault experimental data to verify the theoretical analysis of the results.