华南理工大学学报(自然科学版) ›› 2016, Vol. 44 ›› Issue (2): 40-45.doi: 10.3969/j.issn.1000-565X.2016.02.007

• 机械工程 • 上一篇    下一篇

大功率双丝GMAW 双脉冲多相位协同控制系统

吴开源 梁焯永 何祖伟 黄玺 程佳   

  1. 华南理工大学 机械与汽车工程学院,广东 广州 510640
  • 收稿日期:2015-06-17 修回日期:2015-07-15 出版日期:2016-02-25 发布日期:2016-01-04
  • 通信作者: 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
  • 作者简介: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.
  • 基金资助:
    国家自然科学基金资助项目( 51205136 ) ; 教育部高等学校博士学科点专项科研基金资助项目( 20100172120003) ; 广东省中国科学院全面战略合作专项资金竞争性分配项目( 2013B091500082) ; 华南理工大学中央高校基本科研业务费专项资金重点资助项目( 2015ZZ084)

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   

  1. 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)

摘要: 为提高大功率双丝熔化极气体保护焊( GMAW) 的焊缝成形质量,提出了双脉冲波形控制方法,利用DSP 内部集成的脉宽调制( PWM) 模块,以软件方式实现了并联式主从机PWM 信号的直接数字化控制,从而实现主从机的双脉冲波形调制. 利用DSP 的I /O通信方式建立双脉冲多相位协同控制系统,实现大功率双丝GMAW 两路脉冲同步、交替和独立3 种输出形式的协同控制. 试验结果表明: 所设计的双脉冲多相位协同控制系统满足设计要求,焊接过程稳定,双电弧干扰小,飞溅小,焊缝成形良好,双脉冲焊缝表面呈鱼鳞状,能很好地实现大功率双丝GMAW 工艺.

关键词: 大功率双丝熔化极气体保护焊, 双脉冲, 相位, 协同控制, 脉宽调制, 数字信号处理器

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

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