Control of Current Waveform for Pulsed MIG Welding of Aluminum Alloy Sheets

Abstract

In this chapter, a simplified model of pulsed MIG welding is established and simulated using MATLAB. In addition, the anti-interference of a current waveform is simulated using the adaptive neural network feedforward control. Depending on the “one droplet per pulse” relationship in pulse frequency modulation, faster adjustment of the arc length, compared with the adjustment of the constant current characteristic, is achieved by increasing or decreasing the base time of the average current.