Study of modeling and simulation of full digital controlled double-PMIG welding system based on Matlab/Simulink

This paper presents an integrated simulation model for full digital controlled welding system with Matlab/Simulink,and it consists of power inverter,digital control system and dynamic arc load model.A system simulation study was done for full digital welding inverter,and a method of connecting dynamic arc load model to the system with controlled source was presented.The experimental results validated the developed simulation model,and this simulation study can be applied in implementation of the full digital double PMIG welding and analysis of system dynamic process.By double pulsed gas metal arc welding,it can get beautiful bead appearance,and avoid pore and crack in aluminum welding.