改进阈值消噪算法的小波包实现  

作　　者：马东玲[1] 项贤军[1] 

机构地区：[1]上海工程技术大学高职学院,上海200437

出　　处：《电子制作》2013年第12X期33-33,共1页Practical Electronics

摘　　要：小波包变换是一种时频分析的方法,在分析中高频方面优于小波变换,将其应用于滚动轴承振动信号中噪声的消除。本文在经典的小波软、硬阈值消噪方法的基础上,提出了一种基于小波包分析的改进方法。Matlab仿真结果表明,此法同时克服了软、硬阈值方法的缺点,而且其消噪效果比小波消噪方法要好。the wavelet packet transform is a time-frequency analysis method, based on the analysis of the high frequency part is better than the wavelet transform, applied to the rol ing bearing noise elimination of vibration signal. Based on the classic soft and hard threshold wavelet denoising methods, on the basis of proposed an improved method based on wavelet packet analysis. Matlab simulation results show that this method at the same time overcome the shortcomings of soft and hard threshold method, and its de-noising effect is better than wavelet de-noising method.

关 键 词：滚动轴承 小波包变换 阈值 消噪 

分 类 号：TN911.4[电子电信—通信与信息系统]