Adaptive controls monitor one or more weld conditions which can be directly traced to nugget quality. These controls monitor feedback within the first milliseconds of the weld initiation. Based on this instantaneous feedback the control makes adjustments to inputs and can change the weld parameters to correct the forming weld nugget. The goal is to produce a quality weld nugget each and every weld. The controls are in the marketplace and are being used.
Reference: RWMA - Resistance Welding Manual 4th Edition