CO2 gas shielded arc welding is one of the most important methods of welding and many scholars at home and abroad have putted forward a variety of ideological controls.

• 摘要CO2气体保护焊是当今国内最重要的焊接方法之一，国内外许多学者提出多种控制思想，而实现这些控制思想的前提条件是焊机本身要具有良好的可控性和快速的反应能力。