Autonomous decision-making of welding positions based on analytic hierarchy process in T-joint arc welding
The analytic hierarchy process(AHP)was presented to realize decision-making of welding positions during the horizontal multipass welding process with T-joints.First,the feature points of the groove were detected with visual sensing technology,and the distances between other feature points and the rightmost one respectively in the X/Y direction were used as factors to build the AHP model.Second,a computational method that integrated welding experience related to angular distortion control was proposed to automatically determine the elements in the comparison matrixes.Finally,the decision-making result of welding positions was conducted using the maximum posteriori weight principle.The experimental results on multiple decision-making processes with the webs of different thicknesses showed that the proposed method owns strong anti-interference ability and the accuracy is over 90%.
T-jointanalytic hierarchy processwelding position decisionangular distortion controlvisual sensing
NETL
NSTL
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