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本文利用小波变换的方法，有效识别了旋转机械运行中由滚动轴承等元件的缺陷引起的通过振动，并从时域上计算其通过频率，解决了以往此类故障由于干扰大而难以识别的困难，为机械故障诊断提供了一个非常有效的手段和应用实例。
In this paper, the wavelet transform method is used to effectively identify the passing vibration caused by the defects of the rolling bearing and other elements in the rotating machinery operation and to calculate the passing frequency in the time domain to solve the difficulty of the past such faults are difficult to identify due to the large interference, For machinery failure diagnosis provides a very effective means and application examples.