基于模糊自适应整定PID控制的脉冲MIG焊电源研究  

Research on Pulsed MIG Welding Power Supply Based on The Fuzzy Self-Adaptive PID Control

作　　者：孙伟城[1] 李磊[1] 

机构地区：[1]曲阜师范大学工学院,山东日照276800

出　　处：《电子技术（上海）》2016年第1期59-62,共4页Electronic Technology

基　　金：青年科学基金项目(5140051173);曲阜师范大学科技计划项目(xkj201406)

摘　　要：脉冲MIG焊电源本质上就是弧焊逆变电源。弧焊逆变电源控制系统具有时变性、非线性的性质,采用传统的数字PID控制难以达到精确的控制效果。针对上述问题,文中通过对铝-钢异种金属脉冲旁路耦合电弧MIG焊方法及机理的分析,提出了一种基于模糊自适应整定PID控制的电流闭环控制方案,通过MATLAB搭建了控制模型,并与传统PID控制进行了仿真比较。仿真结果表明,在脉冲MIG焊电源中采用模糊自适应整定PID控制系统,输出电流具有更好的稳定性和精确性。The power source of Pulse MIG Welding is essentially Arc Welding Inverter Power Source. The control system of Arc Welding Inverter Power Supply have some properties of time-varying, nonlinear and so on. It is difficult to achieve precise control effect for us to use the traditional digital PID. Aiming at these problems,This article analyzed method and mechanism of dissimilar metal joining of Aluminum to Steel by Pulse MIG Welding. This paper proposes a current closed-loop control scheme based on fuzzy self-adaptive PID control.There build the control model by MATLAB,and compared with the traditional PID control.The simulation results show that the Pulse MIG Welding power source applied the fuzzy self-adaptive PID control, the output current has better stability and accuracy.

关 键 词：脉冲MIG焊 模糊控制 自适应 MATLAB 

分 类 号：TP273.2[自动化与计算机技术—检测技术与自动化装置]