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从弧长稳定控制出发,分析了变速送丝系统的放大倍数对弧长稳定性的影响,研制了用PID调节器和专用晶闸管移相触发器组成的电弧电压反馈式闭环控制孤长的系统集成化电路。使其既适用于埋弧自动焊,也适用于粗丝气体保护自动焊。
Starting from the arc-length stability control, the influence of the magnification of the variable-speed wire feeding system on the stability of arc length was analyzed. The arc voltage feedback closed-loop control system with PID regulator and special thyristor phase-shift control Circuit. So that it applies to submerged arc welding, also applies to the thick wire gas protection automatic welding.