Intelligent Arc Simulate Integrated Test-bed

Arc welding power source is important part of welding system. It is difficult to effectually evaluate dynamic characteristic of arc welding power source in the field of welding. Dynamic characteristic of arc welding power source decide craftwork effect and quality. It is simple to describe static characteristic of arc welding power source. Static characteristic of arc welding power source can use volt-ampere characteristic to evaluate it. Arc welding is different from the other load .The change of arc welding is large-scale and high-speed. In order to keep stabilization of arc welding, the arc welding power source should adapt and respond the change of arc welding .Describe of dynamic characteristic of arc welding power source don't have international standard. In this paper, the new way that evaluate dynamic characteristic of arc welding power source is put forward. In order to research and describe the dynamic characteristic of arc welding power source, this paper adopt the new way of dynamic characteristic scan. This paper have manufactured experiment equipment. The result of experiment is satisfactory. Industrial computer is control center in this system. Power transistor group which is in amplificatory state is controlled by the computer. Power transistor group form large-scale and quick load. At the same time, power transistor group make up of intelligent arc simulate integrated test-bed. Dynamic resistance act as load of arc welding power source which is tested. In order to test arc welding power source, the value of dynamic resistance set as "0", ""or"".Program environment make use of LabWindows which is developed by national instruments company. The system software and corresponding hardware form virtual instruments. The system software is provided with function of dynamic characteristic scan and the other function. User can take use of the software to progress DAQ and data processing.