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,有效减少了电弧之间的干扰,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.
To overcome the un-stability 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 processors--is developed. By means of the CAN （Controller Area Network） communication pro- tocol and the related software, the system can synchronize two soft-switch inverter power sources to produce pulsed welding current with alternating peak and constant frequency. So, the interference between two arcs is effectively 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.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第2期22-26,共5页
Journal of South China University of Technology(Natural Science Edition)
基金
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)
关键词
双丝焊
熔化极气体保护焊
脉冲
数字化
协同控制
twin-wire welding
gas metal arc welding
pulse
digitalization
synchronized control
