| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a resistance welding control device 1 capable of correcting a reactive current, generated in a to-be-welded object 17 and flowing in a flow dividing circuit, by improving working efficiency. <P>SOLUTION: In the resistance welding control device 1, a welding clearance setting unit 29 sets each welding clearance, and a current increasing degree calculating circuit 28 calculates the increasing degree of a secondary current setting value with an output signal of the welding clearance setting unit 29 as input. A secondary current setting value adding circuit 30 outputs a signal, where the increasing degree G is added to a setting value of a secondary current setting unit 22, to a current error amplifying circuit 23, with an output signal of the secondary current setting unit 22 and an output signal of the current increasing degree calculating circuit 28 as input. The current error amplifying circuit 23 calculates an error with a detection signal of a secondary current detector 21 and an output signal of the secondary current setting value adding circuit 30 as input, and an inverter drive circuit 5 controls an inverter circuit 4 with an output signal of the current error amplifying circuit 23 as input. <P>COPYRIGHT: (C)2013,JPO&INPIT |
