Double-Pulse Multi-Phase Coordinative Control System of High-Power Twin-Wire GMAW

doi:10.3969/j.issn.1000-565X.2016.02.007

Journal of South China University of Technology (Natural Science Edition) ›› 2016, Vol. 44 ›› Issue (2): 40-45.doi: 10.3969/j.issn.1000-565X.2016.02.007

• Mechanical Engineering • Previous Articles Next Articles

Double-Pulse Multi-Phase Coordinative Control System of High-Power Twin-Wire GMAW

WU Kai-yuan LIANG Zhuo-yong HE Zu-wei HUANG Xi CHENG Jia

School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China

Received:2015-06-17 Revised:2015-07-15 Online:2016-02-25 Published:2016-01-04
Contact: 吴开源(1978-) ，男，博士，副研究员，主要从事弧焊逆变电源及其数字化智能控制研究． E-mail:wuky@scut.edu.cn
About author:吴开源(1978-) ，男，博士，副研究员，主要从事弧焊逆变电源及其数字化智能控制研究．
Supported by:
Supported by the National Natural Science Foundation of China( 51205136) ， the Specialized Research Fund for the Doctoral Program of Higher Education of China ( 20100172120003 ) and the Competitive Allocation Project Special Fund of Guangdong Province Chinese Academy of Sciences Comprehensive Strategic Cooperation( 2013B091500082)

Abstract

Abstract: In order to improve the forming quality of welding seam during the high-power twin-wire GMAW ( Gas Metal Arc Welding) ,a double-pulse waveform control method is proposed.The proposed method adopts the PWM ( Pulse Width Modulation) modules integrated in DSP ( Digital Signal Processor) to implement the direct digital control of PWM signals for the parallel master and the slave power supply in a software mode,so that the corresponding double-pulse waveform modulation is further achieved.Moreover,a double-pulse multi-phase coordinative control system is developed by using the I /O communication of DSP,and the coordinative control of synchronous,alternate and independent phase outputs of two pulses for high-power twin-wire GMAW is realized.Test results demonstrate that the developed double-pulse multi-phase coordinative control system meets the design requirements well and helps to achieve stable welding with decreased twin-arc interference,little splash and perfect welding seam with scaly appearance.

Key words: high-power twin-wire gas metal arc welding, double pulse, phase, coordinative control, pulse width modulation, digital signal processor

CLC Number:

TG434.1

WU Kai-yuan LIANG Zhuo-yong HE Zu-wei HUANG Xi CHENG Jia. Double-Pulse Multi-Phase Coordinative Control System of High-Power Twin-Wire GMAW[J]. Journal of South China University of Technology (Natural Science Edition), 2016, 44(2): 40-45.

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Double-Pulse Multi-Phase Coordinative Control System of High-Power Twin-Wire GMAW

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