电液比例位置控制系统在阳极立模浇铸中的应用  

Application Research of Electro-hydraulic Proportional Position Control System in Anode Vertical Mold Casting

作　　者：汪院林 袁锐波[1] 宋勃 WANG Yuanlin;YUAN Ruibo;SONG Bo(Faculty of Mechanical&Electrical Engineering,Kunming University of Science and Technology,Kunming 650000,China)

机构地区：[1]昆明理工大学机电工程学院,昆明650000

出　　处：《重庆理工大学学报（自然科学）》2020年第12期121-129,共9页Journal of Chongqing University of Technology：Natural Science

基　　金：云南省重点研发(工业领域)项目(2018BA070)。

摘　　要：采用电液比例技术对铅电解阳极板浇铸系统的阀控缸进行位置控制,通过特定机构实现浇铸桶的倾翻。为了分析浇铸系统的稳定性及快速响应性,通过对浇铸系统各机构进行分析建立相应的系统数学模型,借助Matlab软件进行仿真分析。仿真结果显示:不经校正的控制系统幅值穿越频率较低,为0.798 Hz,相位裕量较高,为84.1°,导致设备响应速度缓慢,运行快速性不足;经PID校正后,系统的幅值穿越频率增大至5 Hz,相位裕量降低为48°,系统快速性及稳定性均满足工程要求。经对新旧设备所生产的阳极板尺寸进行随机抽样,新设备阳极板尺寸误差可控制在0.61%以内,比旧设备尺寸误差减少1%以上。实验结果表明:该浇铸控制系统满足阳极板生产的要求。In this paper,the electro-hydraulic proportional technology is used to control the position of the valve-controlled cylinder of the lead electrolysis anode plate casting system,and the tilting of the casting barrel is realized by a specific mechanism.In order to analyze the stability and rapid response of the casting system,the corresponding system mathematical model is established by analyzing the various mechanisms of the casting system,and the simulation analysis is carried out by means of Matlab software.The simulation results show that the uncorrected control system has a lower amplitude crossing frequency of 0.798 Hz and a higher phase margin of 84.1°,which will result in slow response speed and insufficient running speed.After PID correction,the system amplitudevalue crossover frequency is increased to 5 Hz,and the phase margin is reduced to 48°.The system’s rapidity and stability meet the requirements in the project.After random samplingof the size of the anode plate produced by the old and new equipment,the size error of the anode plate of the new equipment can be controlled within 0.61%,which is more than 1%larger than the error of the old equipment.The experimental results show that the casting control system meets the requirements of anode plate production.

关 键 词：电液比例控制 位置控制 阳极立模浇铸 频率特性 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]