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WANG Wei-ming, LIU Jia, MA De, YIN Shu-yan. Full digital control system based on DSP for pulsed GMAW inverter[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2004, (2): 35-38.
Citation: WANG Wei-ming, LIU Jia, MA De, YIN Shu-yan. Full digital control system based on DSP for pulsed GMAW inverter[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2004, (2): 35-38.
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Full digital control system based on DSP for pulsed GMAW inverter

  • Beijing University of Technology, Beijing 100022, China

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  • Received Date: June 29, 2003
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  • This paper presents a full digital control system for pulsed gas metal arc welding inverter. The desirable control performance is achieved with the accurately controlled current waveform and high-speed stable arc-length adjustment.A PI regulator with variable parameters is adopted for flexible and accurate current-waveform control. In addition, a new arc-length control method is presented,and the higher adjustment performance is achieved within a wide range. The experimental results validate the system design, the stable and repeatable current waveforms are obtained, and the arc-length becomes robust against the variations of welding parameters.
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