根据药芯焊丝水下焊接的要求，研制了一套水下焊接电弧控制系统。
At the special request of the flux-cored wire welding underwater, the welding arc control system is developed.
大面积矩形电弧蒸发源合理的设置靶源磁场并有效的控制电弧弧斑的运动是十分重要的。
It is important to set the magnetic field reasonably and to control the movement of arc on large rectangular target.
采用模糊控制技术，实现了电弧电压或短路频率的控制，提高了焊接质量。
Fuzzy control tests of arc voltage and short-circuit frequency are conducted to improve welding quality.
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