1.5. Principle of arc sensing

1.5. Principle of arc sensing

 

In case of weaving during arc sensing, the distance between the torch and base material exists and the resistance changes as much as the distance to change the current. That is, when the distance of the two ends is calculated from the current change in the weaving interval, the calibration in left/right direction can be calculated to track the welding line. Also because the welding start location does not have any error in up/down direction by the touch sensing, the average currents of both ends are compared based on this value to calibrate in up/down direction.