Journal of South China University of Technology (Natural Science Edition) ›› 2006, Vol. 34 ›› Issue (2): 22-26.

• Mechanical Engineering • Previous Articles     Next Articles

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)

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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