双丝脉冲焊模糊自适应PID控制系统  

Research of fuzzy adaptive PID control system of double wire pulsed welding

作　　者：姚屏[1] 王磊磊[2] 杨永[1] 朱强[2] 

机构地区：[1]广东技术师范学院机电学院,广东广州510635 [2]华南理工大学机械与汽车工程学院,广东广州510640

出　　处：《电焊机》2014年第7期23-26,共4页Electric Welding Machine

基　　金：国家自然科学基金资助项目(50875088);广东省高等学校优秀青年教师培养计划资助项目(Yq2013106);广东技术师范学院科研课题资助项目;黄埔区科技攻关项目(201341);佛山市科技计划资助项目(2011AA100175)

摘　　要：针对传统PID控制方法参数固定,在时变的焊接过程中难以获得最优控制效果的不足,提出利用模糊控制思想实现双丝脉冲焊过程PID参数的自适应调节。进行了控制系统总体方案设计,构建了模糊控制器、PID调节器的Simulink仿真模型。结合理论和双丝焊经验进行控制量模糊化处理、量化因子计算、隶属度曲线设计、模糊推理规则设计。利用所设计的控制系统模型进行了仿真试验,试验结果表明,模糊自适应PID控制系统结构简单、反应迅速,鲁棒性和自适应性强,输出电流动静态特性良好。In traditional PID control method,it＇s difficuh to obtain optimal control results during time-varying welding process because parameters are fixed. For this problem,fuzzy control theory is introduced to achieve adaptive adjustment of PID parameters in double wire pulsed welding process. The overall control system is designed, and the fuzzy controller and Simulink model of PID regulator are constructed. Combining theory and experience of double wire welding ,fuzzy processing, quantification factor calculation, membership curve design and fuzzy inference rules design are finished. A simulation test is made by the designed control system model. The results show that the fuzzy adaptive PID control system structure is simple,the reponse is rapid,robustness and adaptability is good, and dynamic and static characteristics of output current is fine.

关 键 词：双丝脉冲焊 模糊自适应PID SIMULINK 

分 类 号：TG434[金属学及工艺—焊接]