汽车点焊气动模糊滑模控制研究

Study on fuzzy-sliding pneumatic control strategy and its applications in the spot welding

点焊气动伺服控制系统常用于轿车白车身的焊接。在焊接过程中,保持焊点压力稳定是提高焊接质量的关键因素之一。基于焊接试验平台上,研究了气动系统的控制模型,提出模糊-滑模控制策略。针对辨识所得的气动系统,运用模糊-滑模控制策略对气动系统进行了仿真,结果表明,模糊-滑模控制策略适用于汽车点焊气动系统。

Spot welding pneumatic servo system is commonly applied in the welding of car body-in- white. In the process of the spot welding of the car body-in-white, maintaining a steady welding pressure is a key factor to enhance the welding quality. Based on test equipment, a fuzzy-sliding control model of the pneumatic servo system was presented. The fuzzy-sliding pneumatic control sys- tem was simulated using the MATLAB/Simulink. control scheme is applicable to spot welding. The simulation results show that the fuzzy-sliding