Modeling and control of DE-GMAW process
A novel and high efficient double-electrode gas metal arc welding (DE-GMAW) method has been introduced. The dynamic mathematical model for the DE-GMAW process was developed by adopting the method of equivalent current path, according to the dynamic characteristics of coupled arc and the rule of wire melting. Because the unstable welding arc and high current of DE-GMAW can lead to reduce the weld toughness and increase the residual stress and strain, a multi-input multi-output (MIMO) control scheme was proposed and simulated, which controlled the bypass arc by adjusting the bypass wire feed speed, and controlled the base metal current by adjusting the bypass current. In order to test the effectiveness of the MIMO control scheme, the welding experiment has been carried out. The results showed that the MIMO control scheme was effective. The base metal current was controlled at a nearly constant level and the welding process was stable, and a good weld appearance was also obtained .
DE-GMAW Modeling Simulation Control
Ding Fan Ming Zhu Yu Shi Jiankang Huang Guilong Wang
State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, China Key Laboratory of Non-ferrous Metal Alloys, the Ministry of Education, Lanzhou University of Technology, China
国际会议
济南
英文
1-7
2012-08-24（万方平台首次上网日期，不代表论文的发表时间）