形态滤波在滚动轴承缺陷诊断中的应用

形态滤波为数字信号处理提供了一种新的非线性滤波方式，它可以有效地提取出信号的边缘轮廓以及信号的形状特征。将形态滤波应用到滚动轴承缺陷诊断中，通过形态滤波将滚动轴承原始振动信号的脉冲信号提取出来，从而达到解调的效果。再对滤波后所得的脉冲信号进行频谱分析，容易提取所需的缺陷信息。对形态滤波的解调效果进行了试验验证。

Application of Morphology Filter in Defect Diagnosis of Rolling Bearings

As nonlinear filtering for digital signals processing, morphology filter is able to identify the features of fringe and shape of the signal. The morphology filter is used for the defect diagnosis of rolling bearings, extracting the impulsive signal from the initial vibration signal and demodulating the signals. And then the spectrum analysis on the pulse signals is made after filtering, the defect information is easily to be extracted. Finally, the demodulation effect is validated experimentally.