基于模糊PID的闪光焊机液压系统的压力同步控制研究  

Study of Synchronous Control of Hydraulic System of Flash Butt Welder Based on Fuzzy PID

作　　者：王睿[1] 张军伟[1] 梁涛[1] 高忠林[2] 

机构地区：[1]河北工业大学控制科学与工程学院,天津300130 [2]天津七所高科技有限公司,天津300409

出　　处：《机床与液压》2014年第7期36-38,共3页Machine Tool & Hydraulics

基　　金：天津市应用基础及前沿技术研究计划项目(11JCYBJC06500)

摘　　要：介绍了闪光焊机的液压系统的组成及其工作原理,建立了闪光焊机液压系统的数学模型。针对闪光焊接的顶锻阶段,提出了一种基于二级模糊自调整PID的控制模型,第一级模糊PID控制应用于基准通道,第二级模糊PID控制应用于同步通道,实时地调整PID参数以达到系统的同步运动,该控制方法有效减少了两个系统的压力动态同步误差。The configuration and working principle of hydraulic system of flash butt welder were presented, and the mathematic model of hydraulic system of flash butt welder was established. The control model based on two-class fuzzy self-adjustment Proportion - Integral-Differential （PID） was introduced by aiming at the top-forging stage of the flash butt welding. The First-class fuzzy PID con- trol was used for benchmark access, and the second-class for simultaneous access, the PID parameters were adjusted in real-time to a- chieve simultaneous movement of the system. The control methods are effective in reducing the synchronous dynamic error of pressuTe on the two systems.

关 键 词：闪光焊机 液压系统 模糊PID 

分 类 号：TH39[机械工程—机械制造及自动化]