关键词: 控制策略, 优先级, 自适应模糊推理, 焊接电源

Abstract: To improve the status of welding quality decreased and production dietorted after welding under the circumstance of synchronous operation of several welding powers, external voltage fluctuations and other factors, an idea of multi-power priority control theory was proposed. The structure of priority group control system as well as control flow and theoretical computation model was discussed. The neural network model of a single welding power source based on Adaptive Neuro-Fuzzy Inference System (ANFIS) algorithm was constructed. On the basis of above theory, the simulink model of group control system whose control object were six welding powers was construsted. ANFIS control module in the model consisted of six single welding powers priority neural network model. The simulation results showed that the proposed group control strategy and system simulation model realized priority computation for welding power group. According to the normal welding parameters and welding torch position parameters, combined external voltage fluctuation stata with priority computation parameters, an orderly adjustment of welding power supply parameters was realized. It ensured welding quality and reduced the welding distortion, while reducing the flyback of external networks voltage.

Key words: control strategy, priority , adaptive neuro-fuzzy inference system, welding power source