Welding Unit Division Method Based on Entropy Weight TOPSIS and Genetic Algorithm
Based on the analysis of the welding process characteristics,it proposes a method to realize the reasonable welding units division by entropy weight TOPSIS and genetic algorithm to reduce the difficulty of welding sequence planning and welding station assignment,considering the balance between units and the complexity of the units.Firstly,the quantity range of basic parts is determined according to the optimal unit division formula;secondly,the quantity of basic parts is determined by entropy weight TOPSIS method based on the quality,volume,surface area,connection quantity,weld quantity and weld volume of parts;then,the unit stability,unit balance and unit complexity are taken as the optimization objectives,and the best unit divi-sion scheme is determined by comparative analysis of unit division results obtained by genetic algorithm under different number of units.Finally,a front sub frame of the vehicle is taken as an example to verify the method.The results show that the method is rapid,reasonable and effective,and can meet the actual engineering needs.
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