双丝旁路耦合电弧高效MIG焊方法及控制系统  

Control system for high-efficiency double-electrode MIG welding

作　　者：石玗[1] 朱明[1] 黄健康[1] 张裕明 

机构地区：[1]兰州理工大学有色金属合金教育部重点实验室,兰州730050 [2]University of Kentucky,USA Lexington 40506

出　　处：《焊接学报》2012年第3期17-20,113-114,共4页Transactions of The China Welding Institution

基　　金：国家自然科学基金资助项目(50805073);兰州理工大学优秀青年教师培养计划资助项目(Q200901);甘肃省自然科学基金资助项目(1010RJZA044);教育部科学技术研究重点资助项目(210229)

摘　　要：提出了新型双丝旁路耦合电弧MIG高效焊接方法,理论分析证明其有利于高效焊接过程,但焊接试验表明该方法在开环情况下焊接过程极不稳定,焊缝成形差.分析了双丝旁路耦合电弧开环不稳定的原因,提出了双丝旁路耦合电弧MIG焊闭环控制方法,采用基于xPC实时目标机技术建立了双丝旁路耦合电弧控制硬件系统,运用Mat-lab/Simulink工具开发了其控制系统的快速原型.结果表明,模糊控制器的控制效果可以满足稳定焊接的要求.在此基础上进行了高效焊接试验,与传统MIG焊方法相比可大幅提高焊接效率.A novel and highly effective double-electrode metal inert gas(MIG) welding process was presented.However,the coupled arc under open-loop control condition was unstable,which led to serious defects in the resultant weld.A closed-loop control system for double-electrode MIG welding process was designed to resolve the instability problem under open-loop control system.Then a rapid prototyping control system based on xPC real-time target technology was established,and the control software was designed with Matlab/Simulink tools.The results show that the fuzzy controller can satisfy the arc stabilizing control requirement, and have higher efficiency and lower spatter than the conventional MIG welding process.

关 键 词：双丝旁路耦合电弧MIG焊 高效焊接 实时目标机 

分 类 号：TG409[金属学及工艺—焊接] TP273[自动化与计算机技术—检测技术与自动化装置]