Due to changing welding condition caused by interference in TIG welding process,to improve the sensors and its control is two ways to promote accuracy of closed-loop control of welding quality.

• 对于焊接过程中常出现各种干扰,焊接条件时有变化的TIG自动焊而言,改进传感方法和控制技术是提高焊缝质量闭环控制系统控制效果的两大途径。