平移不变量小波去噪方法是对Donoho阈值法的改进,该方法不仅能有效地抑制伪吉布斯现象,而且

能减小原始信号和估计信号之间的均方根误差,提高信噪比。将这种方法用于变速箱齿轮故障信号的去噪处理,同

时与阈值法去噪的结果进行比较。结果表明,该方法可以有效地去除强噪声的干扰,提取齿轮故障特征信息,具有

很好的工程实用性。

-Vector spectrumHilbert demodulation analysis method based on the same source data fusion of rotarymachinerywas put

forward. The algorithms of vector spectrumtechnologywas explained. Anewmethodwas presentedwhen the vector spectrumwas applied

into the Hilbert demodulation. The method was named vector-Hilbert demodulation. Not only through theoretical analysis does the article

prove the feasibility of the vector-Hilbert demodulation method, but also through being used in the fault diagnosis of high speed rotary

gears confirm the effectiveness of this method.