协同式CO_2焊短路过渡模糊控制系统研究

STUDY ON FUZZY CONTROL SYSTEM FOR SYNERGIC CO_2 SHORT CIRCUIT ARC WELDING

介绍了一种在波形控制基础上，采用电弧自身传感的协同式模糊 控制方法对焊接过程参数进行实时控制的逆变式ＣＯ２焊机控制系统。它通过电弧自身传感 对ＣＯ２焊接过程有重要影响的短路过渡频率的检测，通过模糊处理和模糊判决之后，实时 的对电弧电压进行控制，以保持焊接过程中规范参数的协同匹配关系。试验结果表明，采用 该控制系统的焊机，实现了焊接规范参数的自动匹配和自动调节，同时明显改善了焊缝成形 和降低了焊接过程中的飞溅。

Base on the wave controlling, a fuzzy control syste m of welding arc self-sening for synergic CO2 short circuit arc welding is dis cussed. On the base of the relationship among the various welding parameters, th e automatic setting and adjusting of welding parameters is realized in above sys tem. The result of experiences shows that this fuzzy control system cause a stab le short circuit arc welding process with much lower spatter, better profile of the weld.