The Design and Study of GMAW Inverter Power Based on DSCCS

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• 作者：Chuntian Li ; Changhua Du ; Huibin Xu ; Yi Luo  ; ;   ; ^{lct0214@cqut.edu.cn}
• 关键词：Invert Power for GMAW ; PCF ; DSCCS ; Controlling Mechanism
• 刊名：Procedia Engineering
• 出版年：2011
• 出版时间：2011
• 年：2011
• 卷：15
• 期：Complete
• 页码：1098-1102
• 全文大小：360 K

文摘

Based on the effective and dynamic adaptability of the GMAW (Gas Metal Arc Welding) welding process, the main circuit of GMAW power, which is attached to the inverter of intermediate frequency and full-bridge IGBT units, is designed felicitously in the paper, and to use the controlling methods of PCF (the parallel and composite feedback), the methods of adder for Calculus and ratio, and the theory of Laplace transform, the model of relevant mathematical function between the dynamic signals is built exactly. On further reflection, the DSCCS (the Digital Signal Closed-loop Control System), is found based on the DSP unit and the PCF. Through the correlative welding test, it is analyzed the control theory and mechanism of welding current waveform from the DSCCS. Its adaptability of welding technology is also given objective assessment.