Journal of South China University of Technology(Natural Science) >

2016 , Vol. 44 >Issue 2: 40 - 45

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

Mechanical Engineering

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

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

Received date: 2015-06-17

  Revised date: 2015-07-15

  Online published: 2016-01-04

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)

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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

Cite this article

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), 2016 , 44(2) : 40 -45 . DOI: 10.3969/j.issn.1000-565X.2016.02.007

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