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Pulsed gas metal arc welding is an important welding process in advanced manufacturing technology, which makes conventional welding process a finely controllable process. However, this process demands a synergic setting up of pulse parameters in order to retain optimal transfer of droplets which depends on experimental data under various conditions, while the stability of arc length is necessary but...
Pulse gas metal arc welding (pulse GMAW) plays an important role in advanced manufacturing technology, and it is transforming the conventional welding process into fine controllable one. However, the development of sophisticated pulse GMAW machines becomes very complex. The synergic parameters preset are needed in order to achieve optimum weld process. In addition, there are many facets of disturbances...
An IGBT inverter-type power supply for CO2 arc welding was developed, using LPC2131 embedded ARM unit to realize output waveform control. The main switching circuit and the embedded chip compose a fully digitalized system. It is essentially a constant current (CC) power supply through PWM control, and can track reference output current during short-circuit period in accordance with physical transfer...
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