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1.发明授权WELDING CONTROL USING FUZZY LOGIC ANALYSIS OF VIDEO IMAGED PUDDLE DIMENSIONS 失效管制SCHWEISSBANDNAEHTEN使用摄像机和模糊
公开(公告)号：EP0789640B1
公开(公告)日：1999-05-26
申请号：EP95938779.6
申请日：1995-10-26
发明人： AUSTIN, Mary, A. , DUNNE, Kenneth, C. , LINDLAND, Dag , FREY, Phillip, L. , HYSTAD, Dean, G. , NELSON, Richard, E. , WARNER, Bradley, D.
CPC分类号： B23K9/1062 , B23K9/1274
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2.发明公开WELDING CONTROL USING FUZZY LOGIC ANALYSIS OF VIDEO IMAGED PUDDLE DIMENSIONS 失效管制SCHWEISSBANDNAEHTEN使用摄像机和模糊
公开(公告)号：EP0789640A1
公开(公告)日：1997-08-20
申请号：EP95938779.0
申请日：1995-10-26
发明人： AUSTIN, Mary, A. , DUNNE, Kenneth, C. , LINDLAND, Dag , FREY, Phillip, L. , HYSTAD, Dean, G. , NELSON, Richard, E. , WARNER, Bradley, D.
CPC分类号： B23K9/1062 , B23K9/1274
摘要： A welding system includes an imaging system that takes frame by frame pictures of a weld puddle. The imaging system is located in the weld torch. From the images puddle length and width are determined. The length and width are applied against stored membership functions that cover a range of different weld current characteristics and the degree of membership of each dimension in those functions is determined, producing an alpha factor for each membership function. This provides a fuzzy current requirement. Stored values for moment and area for each membership function are multiplied by the alpha for the respective function. The total of the moments is divided by the total of the areas to produce a desired weld current. The weld head includes a weld wire feeder that is driven by a servo by which the wire can be fed along either side of the weld joint. The wire feeder is gear driven in such a way that it does not interfere with the optics in the weld torch. The optics include a strobe to illuminate the puddle. Signal processing includes a process for interpolating the puddle centerline from the range in puddle widths over successive strobed images of the puddle. The head is positioned automatically over the centerline.
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