波控短路过渡高速焊弧长模糊控制

Fuzzy control of arc length for current waveform controlled short circuiting arc welding under high-speed welding condition

针对短路过渡高速焊过程中电弧弧长波动更快这一特点,采用电弧电压作为反馈量控制燃弧大电流的模糊控制方法来控制短路过渡电弧,提高高速焊接条件下电弧的稳定性。介绍了系统的结构、模糊控制器和试验结果。试验结果表明,所建立的模糊控制系统在弧长发生变化时,能够快速有效控制电弧使其稳定。

Due to the drawback that the welding arc length fluctuates fast in the short circuiting transfer high-speed welding process, a fuzzy logic control method is proposed to improve the arc stability, which uses the arc voltage as feedback parameter to control the high constant current for the sake of controlling arc. The system structure, fuzzy controller and experimental result are introduced. The experimental result shows that the fuzzy logic control system can control arc and make it stable rapidly and effectively, when the welding arc length fluctuates.