华南理工大学学报(自然科学版) ›› 2006, Vol. 34 ›› Issue (2): 22-26.

• 机械工程 • 上一篇    下一篇

双丝脉冲熔化极气体保护焊的数字化协同控制

李阳1 黄石生1 陆沛涛1 李远波2   

  1. 1.华南理工大学 机械工程学院,广东 广州 510640;2.广东工业大学 自动化学院,广东 广州 510090
  • 收稿日期:2005-05-02 出版日期:2006-02-25 发布日期:2006-02-25
  • 通信作者: 李阳(1966-),男,讲师,博士生,主要从事弧焊逆变电源与数字化控制研究 E-mail:leonlee@tom.com
  • 作者简介:李阳(1966-),男,讲师,博士生,主要从事弧焊逆变电源与数字化控制研究
  • 基金资助:

    国家自然科学基金资助项目(50375054);广州市科技攻关资助项目(200323D0251)

Digitalized Synchronized Control of Twin-W ire Pulsed Gas M etal Arc W elding

Li Yang1  Huang Shi-sheng1  Lu Pei-tao1  Li Yuan-bo2   

  1. 1.College of Mechanical Engineering,South China Univ.of Tech.,Guangzhou 5 10640,Guangdong,China;2.College of Automation,Guangdong Univ.of Tech.,Guangzhou 510090,Guangdong,China
  • Received:2005-05-02 Online:2006-02-25 Published:2006-02-25
  • Contact: 李阳(1966-),男,讲师,博士生,主要从事弧焊逆变电源与数字化控制研究 E-mail:leonlee@tom.com
  • About author:李阳(1966-),男,讲师,博士生,主要从事弧焊逆变电源与数字化控制研究
  • Supported by:

    国家自然科学基金资助项目(50375054);广州市科技攻关资助项目(200323D0251)

摘要: 为解决双丝熔化极气体保护焊(GMAW)中焊接过程不稳定、焊接效率易波动的问题,采用高速单片机80C320与80C552构成双微机协同控制器,分别控制主、从软开关逆变式脉冲焊接电源,借助现场总线通信协议,通过软件的方式协调主、从电源的工作;同时,采用模糊控制方法对双丝弧长进行闭环控制.从而使主、从电弧分别获得频率一致、峰值相差180°的脉冲电流,有效减少了电弧之问的干扰,使焊接过程稳定,焊缝成型良好.实验结果表明,数字化协同控制灵活性大,可使双丝脉冲GMAW过程稳定.

关键词: 双丝焊, 熔化极气体保护焊, 脉冲, 数字化, 协同控制

Abstract:

To overcome the un-stabihty and low effectiveness during the twin-wire gas metal arc welding(GMAW) process,a digitalized synchronized control system consisting of a dual-microprocessor- 80C320 and 80C552 highspeed single chip processom-is developed.By means of the CAN(Controller Area Network)communication protocol and the related software,the system can synchronize two soft-switch inverter power sources to produce pulsed welding current with ahem ating peak and constant frequency. So,the interference between two arcs is efectively reduced,and the welding process becomes stable with a fine welding seam. In addition,the arc lengths are controlled by a close-loop fuzzy control program. Experimental results show that the digitalized synchronized control scheme is very flexible and that it can help stabilize the twin-wire GMAW process.

Key words: twin-wire welding, gas metal arc welding, pulse, digitalization, synchronized contro