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杨立军, 徐立城, 张晓囡, 李俊岳. 短路过渡CO2焊电信号的小波滤波[J]. 焊接学报, 2006, (8): 31-34,38.
引用本文: 杨立军, 徐立城, 张晓囡, 李俊岳. 短路过渡CO2焊电信号的小波滤波[J]. 焊接学报, 2006, (8): 31-34,38.
shu
YANG Lijun, XU Licheng, ZHANG Xiaonan, LI Junyue. Wavelet filtering of electric signals in short circuit CO2 welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2006, (8): 31-34,38.
Citation: YANG Lijun, XU Licheng, ZHANG Xiaonan, LI Junyue. Wavelet filtering of electric signals in short circuit CO2 welding[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2006, (8): 31-34,38.
shu

短路过渡CO2焊电信号的小波滤波

Wavelet filtering of electric signals in short circuit CO2 welding

    摘要
  • 摘要: 利用傅里叶级数变换对CO2焊短路过渡过程的电信号特点进行了分析,指出短路过渡过程的电信号的频率分量包含了多种频率的谐波信号,既有短路过渡本身固有的低次谐波,还有短路过渡本身固有的高次谐波和高频干扰信号。应用软阈值小波滤波的方法对CO2焊普通短路过渡和波形控制短路过渡的电信号进行了处理和研究。结果表明,选择适当的波形数据处理方法对CO2焊短路过渡过程的研究具有重要意义。

     

    Abstract: The electric signals of short circuiting transfer in CO2 welding were analysed with Fourier series, which consist of many elementary waves with different frequency, including the inherent high frequency elementary waves and interfere signals of high frequency besides low frequency elementary waves.The wavelet filtering with adjustable threshold was applied to study the signals of both general and waveform controlling short circuiting transfer, which indicates the importance of a suitable waveform data processing method to short circuiting transfer in CO2 welding.

     

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