A spot welder comprises a neural network for processing, in real time, current and voltage energizing a weld in progress. The neural network generates a predicted time of optimal weld strength and/or nugget size for the weld in progress. A controller terminates the weld in progress at the predicted time....http://www.google.fr/patents/US6018729?utm_source=gb-gplus-shareBrevet US6018729 - Neural network control of spot welding