基于线性二次型的热连轧活套高度和张力控制模型  

Looper-gauge and tension control model based on linear quadratic for hot tandem rolling

作　　者：原浩 牛晶 李华英[2] 刘光明[2] 姬亚锋[1] YUAN Hao;NIU Jing;LI Hua-ying;LIU Guang-ming;JI Ya-feng(School of Mechanical Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;School of Materials Science and Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China)

机构地区：[1]太原科技大学机械工程学院,山西太原030024 [2]太原科技大学材料科学与工程学院,山西太原030024

出　　处：《塑性工程学报》2022年第5期185-190,共6页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(52005358);山西省自然基金面上资助项目(201901D111243,201901D111241);山西省专利推广实施专项(20210505);山西省留学回国人员科技活动择优项目(20210046)。

摘　　要：针对热连轧过程中活套高度与张力之间的强耦合关系,提出了一种基于线性二次型的活套高度和张力的控制方法,该方法能够有效解决活套高度和张力的耦合问题,保持活套系统的稳定。首先,根据现场数据和相关的数学模型建立了状态方程。其次,基于线性二次型理论,设计了活套高度和张力的LQR控制器。最后对所设计的LQR控制器的抗干扰性能和响应性能进行了测试。仿真结果表明,相较于传统的PI控制器,所提出的LQR控制器具有更好的抗干扰性能和响应性能。Aiming at the strong coupling relationship between looper-gauge and tension during hot tandem rolling,a linear quadratic-based control method for looper-gauge and tension was proposed.This method can effectively solve the coupling problem of looper-gauge and tension and maintain the stability of looper system.Firstly,the state equation was established according to the field data and related mathematical model.Then,based on linear quadratic(LQR)theory,the LQR controller of looper-gauge and tension was designed.Finally,the anti-interference performance and response performance of the designed LQR controller were tested.The simulation results show that the proposed LQR controller has better anti-interference performance and response performance compared with the traditional PI controller.

关 键 词：热连轧 活套高度 张力 LQR 

分 类 号：TG335[金属学及工艺—金属压力加工]