Research on Constant-Tension Control Based on Fuzzy Multiple Models

The continuous deflection and pitch of the welding wire can assure continuous electrical contact, smooth arc characteristic and coherently penetrative welding, and serve wire on the automation welding equipment continuously. The arranging wire based on angle and the constant tension intertwine are key. On the basis of the thorough analysis of the structure, characteristic and the factors that effect the tension of the welding wire in the intertwine process, the models of tension system were established in the engineering view. Floating pulley block´s position feedback control scheme based-on the adaptive-self line speed was proposed; Considering the variation of the paying-off winding-diameter, a control strategy based on fuzzy multiple models was presented, and a multiple models controller using fuzzy winding-diameter switching regulation was designed. The simulation results show that the expected control performances are achieved.