Research on Arc Voltage Distance-Regulating System for TIG Welding Robot

摘要

In order to meet the demand of TIG welding robot for high precision and high real time,this paper presents the arc voltage distance-regulating system using expert controller.By precisely controlling the distance between the tungsten electrode and the welding seam,the arc voltage is precisely controlled,and the closed-loop control of arc voltage is realized.The simulation and experiment of MATLAB show that the arc voltage distance-regulating system's arc voltage control accuracy is 18±0.8V(6±0.32mm),which meets the precision requirements of welding robot's arc voltage control and significantly improves the welding quality.