基于梳状小波的旋转机械振动信号降噪方法的研究

De-Noising Technique for Vibration Signals of Rotating Machine Based on Comb Wavelet

通过对小波变换降噪性能的研究 ,针对旋转机械振动信号数据采集的特点 ,提出了一种在旋转机械振动信号处理中 ,利用梳状小波进行降噪的方法。该方法利用梳状小波生成的梳状滤波器对旋转机械振动信号进行降噪处理。通过仿真计算 ,对该方法进行了检验 ,并与线性平均法进行了比较 。

Based on the study of wavelet de noising and the method of time average, it is demonstrated that the most suitable base should be comb wavelet for eliminating high level noise in vibration signals. The method of eliminating strong noise based on the comb wavelet is investigated. An effective de nosing method for vibration signals based on comb wavelet was presented. We apply the proposed method to simulation data showing a better performance of de noising on vibration signal of rotating machine.