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The problem of digital controlling of high frequency microplasma arc welding machine has been solved through Fujitsu 16-bits single-chip processor used.Digital welding power sources and their control systems,digital sequential control system,and digital man-machine interaction system were included in digital microplasma arc welding machine studied.Principles,which is about digital sequential control system,digital man-machine interaction system,digital controller and its interface,and controlling software program,were analyzed.It has been showed that full digitalization of high frequency microplasma arc welding machine was fulfilled,minimum welding current of the machine is 0.05A,and arc is stable and can been started unfailingly.
The problem of digital controlling of high frequency microplasma arc welding machine has been solved through Fujitsu 16-bits single-chip processor used. Digital welding power sources and their control systems, digital sequential control system, and digital man-machine interaction system were included in digital microplasma arc welding machine studied. Principles, which is about digital sequential control system, digital man-machine interaction system, digital controller and its interface, and controlling software program, were all analyzed. It has been showed that full digitalization of high frequency microplasma arc welding machine was fulfilled, minimum welding current of the machine is 0.05A, and arc is stable and can been started unfailingly.