基于局部牛顿插值的数字化焊机参数自调节算法  

Digital welder parameters self-regulating algorithm based on partial Newton interpolation

作　　者：林放[1,2] 黄文超[1] 陈小峰[1] 魏仲华[1] 薛家祥[1] 

机构地区：[1]华南理工大学机械与汽车工程学院,广州510640 [2]江门职业技术学院机电技术系,广东江门529000

出　　处：《焊接学报》2011年第3期33-36,114,共4页Transactions of The China Welding Institution

基　　金：国家自然科学基金资助项目(50875088);广东省科技攻关项目(201B010700001);广州市黄埔区科技计划项目(1021)

摘　　要：提出了一种基于大步距标定和局部牛顿(Newton)插值的焊接参数自调节算法,不仅可以实现参数调节的一元化,还将数字化焊机的数据库由静态数据库模式转变为具有自学习和自调节功能的动态数据库模式,为数字弧焊电源向智能化方向发展提供了一种有效的演进策略.结果表明,这种算法可以实现数字化焊机参数在较大范围内的连续自调节;用生成的脉冲型熔化极气体保护焊(pulsed gas metal arc welding,P-GMAW)参数进行试焊,焊接过程稳定,焊缝成形良好;采用具有不同优先级的焊接参数存储模式可以实现焊接参数的最优化.A welding parameter self-regulating algorithm based on long-step calibration and partial Newton interpolation were put forward.By this algorithm,not only the unified parameters regulation could be realized,but also the database of the digital welder could be transformed from static mode into dynamic mode,in which the self-learning and self-regulating function were adopted.It might provide an effective strategy for the intelligent evolution of the digital welder.The results of the tests indicated that the welding parameters could be continuously self-regulated in a wide range.By the P-GMAW parameters generated by this algorithm,a stable welding process and well-formed seams could be acquired.By employing the parameter storing method with various priorities,the optimization of the parameters could be achieved.

关 键 词：数字化焊机 大步距标定 局部牛顿插值 自调节算法 

分 类 号：TG434.4[金属学及工艺—焊接]