An adaptive stepper for a weld controller

Details An adaptive stepper for a weld controller An adaptive stepper for a weld controller

B - Operations, Transporting

23

K

B23K 9/095 (2006.01) B23K 11/25 (2006.01)

Patent

CA 2085001

An adaptive stepper (22) for adjusting welding heat boost to compensate for deterioration (flattening) of the electrode tips of a welder (15). Heat boost is provided to the welder (15) as a function of expulsion rather than by a series of linear step profiles specified by a weld engineer. An operator sets up an adaptive schedule based upon an expected resistance difference between consecutive half-cycles considered to be "normal". If differences equal to or less than the normal level are detected during a group of welds, the heat boost will be incremented by 1 % after a preprogrammed number of welds have been made. If differ- ences greater than normal are detected, indicating expulsion, the boost will be decremented immediately by 1 % between in- creases, if decrements are allowed at the time.

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