【摘要】 提出了一种对齿轮箱调制类故障信号进行诊断的综合方法。对于既有调幅成分又有调频成分的齿轮箱故障信号 ,提出首先利用 Hilbert变换解调出包络信息 ,同时保留剩余信号 ,然后用三次 FFT技术对调频信息进行解调 ,使得调频信号特征更加清晰 ,为齿轮箱故障诊断提供了更准确的信息。更多还原

【Abstract】 In the paper the authors come up with a hybrid analysis method on diagnosing gear box failure about modulated signal. To analyze gear box signal with amplitude and frequency modulation, the authors apply Hilbert transform which extracts the amplitude modulation components and simultaneously retains the rest, and thrice FFT which extracts the frequency modulation components and clarifies the characteristics of frequency modulation and makes the diagnosis more accurate than before.更多还原