连铸结晶器振动液压伺服系统建模与控制  

Modeling and control of hydraulic servo system for continuous casting mould oscillation

作　　者：任国振 陈松[1] Ren Guozhen;Chen Song(School of Mechanical Engineering and Automation,University of Science and Technology Liaoning,Anshan 114051,China)

机构地区：[1]辽宁科技大学机械工程与自动化学院,辽宁鞍山114051

出　　处：《材料与冶金学报》2024年第3期249-255,共7页Journal of Materials and Metallurgy

基　　金：辽宁省教育厅服务地方项目(2020FWDF07).

摘　　要：为了提高结晶器液压振动系统的控制精度和稳定性,解决相位延迟和振幅减小等问题,采用机理建模方法建立了结晶器振动液压伺服系统数学模型,提出了带负载力补偿的自适应PI控制与速度前馈控制相结合的控制方法,并搭建了系统的非线性仿真模型.结果表明:所建数学模型正确,输入信号的位移跟踪误差控制在3%以内.结晶器振动的合理控制可有效提高铸坯表面质量,减少振痕的产生,同时还能改善保护渣消耗对铸坯润滑的影响.In order to improve the control accuracy and stability of the mould hydraulic oscillation system,and solve the problems of phase delay and amplitude reduction,the mathematical model of the mould oscillation hydraulic servo system is established using the mechanism modeling method.A control method combining adaptive PI control with load compensation and speed feedforward control is proposed,and a nonlinear simulation model of the system is built.The results show that the established mathematical model is correct,and the displacement tracking error of the input signal is controlled within 3%.The reasonable control of mold vibration effectively improves the surface quality of the casting billet,reduces oscillation marks,and also improves the impact of mold powder consumption on the lubrication of the casting billet.

关 键 词：液压伺服系统 自适应PI控制 速度前馈控制 负载力补偿 

分 类 号：TF341.6[冶金工程—冶金机械及自动化] TP13[自动化与计算机技术—控制理论与控制工程]