铝合金脉冲MIG焊过程PID控制器设计与仿真  

Design and simulation of intelligent PID controller for aluminum alloy pulsed MIG welding process

作　　者：薛诚[1] 石玗[1] 樊丁[1] 陈剑虹[2] 

机构地区：[1]兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室,甘肃兰州730050 [2]兰州理工大学有色金属合金省部共建教育部重点实验室,甘肃兰州730050

出　　处：《电焊机》2008年第1期8-11,共4页Electric Welding Machine

基　　金：国家自然科学基金资助项目(50675093);甘肃省自然科学基金资助项目(3ZS051-A25-029);教育部春晖计划资助项目

摘　　要：针对铝合金脉冲MIG焊过程,根据建立的占空比与焊接正面熔宽之间动态关系的数学模型,设计了非线性PID控制器和遗传算法优化的PID控制器,并分别对其在焊接过程中占空比对熔池正面熔宽阶跃动态响应的控制效果进行了MATLAB仿真研究。结果表明,非线性PID控制方法具有比遗传算法优化的PID控制方法更好的控制效果。This paper had designed two kinds of intelligent PID controller,which are both based on the math model of dynamic relationship between duty ratio and weld width in aluminum alloy pulsed MIG welding process.One is nonlinear PID controller and the other is genetic algorithm optimized PID controller.The results of the control had been both simulated by simulation toolbox of the MATLAB. The results of simulation show that nonlinear PID controller works better than genetic algorithm optimized PID controller.

关 键 词：铝合金 脉冲MIC焊 非线性PID 遗传算法 仿真 

分 类 号：TG434.5[金属学及工艺—焊接] TP311.5[自动化与计算机技术—计算机软件与理论]