电焊机2017，Vol.47Issue(6)：47-51,5.DOI:10.7512/j.issn.1001-2303.2017.06.10
不同熔滴过渡类型电弧声小波包频带能量特征提取
Feature extraction of frequency band energy of different metal transfer arc sound signals based on wavelet packet
卢宜 1熊震宇 1刘辉1
作者信息
- 1. 南昌航空大学航空制造工程学院,江西南昌330063
- 折叠
摘要
Abstract
The arc sound signal acquisition system is designed based on LabVIEW virtual instrument.The MIG welding droplet transfer and spray transfer arc sound signals are taken as the research object.The arc sound signals are decomposed and reconstructed by wavelet packet and the characteristics of different frequency bands energy are extracted,and hen,the feature vectors of droplet transfer and spray transfer arc sound signals are constructed and identified.The results show that the arc sound frequency spectrums of these two kinds of transfers mainly concentrate in 0～7 kHz.The arc sound energy of droplet transfer has higher amplitude at low frequency band (0～1.5 kHz) and that of spray transfer has higher amplitude at high frequency band (2～5 kHz).The energy percentage of the arc sound signals of these two kinds of transfers in the frequency bands of S4,0,S4,2,S4 and 3 are obviously different,which can be used as a feature vector to identify droplet transfer and sprav transfer.关键词
电弧声/小波去噪/MIG/LabVIEWKey words
arc sound/wavelet denoising/MIG/LabVIEW分类
矿业与冶金引用本文复制引用
卢宜,熊震宇,刘辉..不同熔滴过渡类型电弧声小波包频带能量特征提取[J].电焊机,2017,47(6):47-51,5.
