| 摘要 |
PURPOSE:To accurately move a welding torch along a weld line by multiplying a first area of first and second areas which are calculated by integrating an arc current with the time by a parameter to calculate a first corrected area and comparing the size with the second area to compensate the movement of the welding torch. CONSTITUTION:The area processing parameter is set according to a welding condition by an area processing parameter setting means 1. Next, the arc current is integrated with the time for every 1/4 period by an area calculation means 2 to calculate two areas. Furthermore, the first area of the two areas is multiplied by the parameter by a corrected area calculation means 3 to calculate the first corrected area and the size between the first corrected area and the second area of the two areas is compared and discriminated by a comparison and discrimination means 4. Further, when the first corrected area is different from the second area, a reference value is corrected by a movement compensation means 5 to compensate the movement of the welding torch.
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