摘要
由于传统的形态滤波采用相同的结构元素,会造成输出倚的现象。因此广义形态滤波采用不同的结构元素,即先小后大,然后用信噪比和滤波误差对滤波效果进行衡量,并和传统的形态滤波进行比较,研究表明广义形态滤波具有更高的信噪比和更小的滤波误差。最后用实测的故障信号进行验证,其滤波性能要好于传统的形态滤波,并且只是加、减和取极值,计算方便,具有较好的应用前景。
As traditional morphological filtering using the same structural elements, it will cause the output leaning phenomenon. In this paper, generalized morphological filter using different structural elements, that is, first small and then big, then using the SNR and filtering error to measure filtering effect and comparing with tra- ditional morphological filtering. The results show that the generalized morphological filtering has a higher SNR and smaller filtering error. Finally, using the actual measured fault signal to verify, its filtering performance is better than the traditional morphological filtering, and just to add, subtract and take extreme. The method ren- ders convenient calculation and has good prospects.
出处
《运城学院学报》
2014年第2期58-61,共4页
Journal of Yuncheng University
关键词
滚动轴承
广义形态滤波
结构元素
降噪
Roiling bearing,
Generalized morphological filtering
Structural elements
Noise reduction
