CO_2焊电信号的小波分析  

Wavelet Analysis of Electric Signals in CO_2 Welding

作　　者：易志平[1] 薛家祥[1] 

机构地区：[1]华南理工大学机电工程系,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2002年第6期27-29,共3页Journal of South China University of Technology(Natural Science Edition)

基　　金：广东省自然科学基金资助项目 (0 0 0 380 )

摘　　要：CO2 弧焊过程电信号的实际测试过程中 ,噪声的存在常是难以避免的 ,消除噪声干扰是信号分析中重要的环节 .分析了小波软阈值信号消噪方法 ,通过对CO2 焊过程的电信号进行小波软阈值滤波处理 ,较好地保持信号的突变部分 。In the practical measuring of the electric signals of the CO 2 welding, it is difficult to avoid noises. De_noising, therefore, is a key link in signal analysis. De_noising via wavelet soft_threshold method is analyzed in this paper. Filtering electric signal of CO 2 welding by this method can keep the break position of the signals. Thus, the method can improve the effect of the extracting effect of signals' characteristic features of information.

关 键 词：小波变换 软阈值滤波 信号分析 

分 类 号：TG403[金属学及工艺—焊接]