摘要
介绍了基于插值细分法的第二代小波变换的基本原理和变换过程,给出了小波降噪的阈值选取方法。用仿真信号进行验证,并将该算法应用于矿用通风机振动信号的降噪处理中,提高故障诊断的准确率。
The principle and process of the second generation transform based on interpolating subdivision is described, and then the selection of wavelet shrinkage is provided. The scheme is verified by simulative signal, and then is applied to the denoising vibration signal of two mine ventilators. The scheme can improve the SNR, and improve the accuracy of the fault diagnosis.
出处
《煤矿机电》
2007年第2期3-5,共3页
Colliery Mechanical & Electrical Technology
关键词
第二代小波变换
插值细分法
阈值函数
降噪
信噪比
second generation wavelet transform
interpolating subdivision
thresholding function, denoising
SNR
