Electric heating – Metal heating – By arc
Patent
1982-05-20
1985-01-01
Shaw, Clifford C.
Electric heating
Metal heating
By arc
21912512, B23K 912
Patent
active
044917180
ABSTRACT:
A template-matching adaptive control system for welding comprising noncontacting means for sensing the lateral profile of a weld joint while the welding electrode moves laterally across the joint, means for comparing the sensed lateral profile to a predetermined reference profile or "template", and means for adjusting a welding parameter, such as the center of oscillation for tracking, the width of oscillation, and constant fill control, in response to the results of the comparison. The comparison between the sensed lateral profile and the template is based upon a mathematical criterion of the degree of match therebetween. One disclosed embodiment performs control based upon finding the closest match between the sensed lateral profile and a plurality of different templates. Another embodiment performs control by making adjustments related to the value of the mathematical criterion. The disclosed embodiments employ programmed microprocessers to accomplish the template matching. The system can adapt to changes in direction of the weld seam as well as changes in the width and shape of the profile of the weld seam.
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Cook George E.
Wells, Jr. A. Michael
CRC Welding Systems, Inc.
Shaw Clifford C.
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