In the constant current control method for spot welding system, the generated heat is varied due to the change of the specimen resistance. Spatter is generated because of variation of the generated heat.
In this paper, the constant power control stra...
In the constant current control method for spot welding system, the generated heat is varied due to the change of the specimen resistance. Spatter is generated because of variation of the generated heat.
In this paper, the constant power control strategy using Fuzzy controller is proposed to improve the quality of the welding products. Fuzzy controller is implemented by 16bit one chip 80C196KB microcontroller.
Simulation and experimental results show that DC spot welder with single phase PWM inverter is effectively controlled by the constant power control strategy at transformer primary side.