平整轧制多变量系统的线性自抗扰解耦控制  

LADRC decoupling control for multivariable system of skin pass rolling

作　　者：李鹏威 王京 Li Pengwei;Wang Jing(Institute of Engineering and Technology,University of Science and Technology Beijing,Beijing 100083,China;College of Electrical and Information Engineering,Beihua University,Jilin 132021,China)

机构地区：[1]北京科技大学工程技术研究院,北京100083 [2]北华大学电气与信息工程学院,吉林吉林132013

出　　处：《武汉科技大学学报》2019年第5期339-342,共4页Journal of Wuhan University of Science and Technology

基　　金：国家自然科学基金资助项目(61673053)

摘　　要：针对平整轧制板形板厚控制系统中存在的多变量、强耦合及不确定性等问题,本文提出了将线性自抗扰(LADRC)技术与平整机板形板厚控制系统相结合,利用线性扩张状态观测器(LESO)估计系统总扰动,并将PD作为反馈控制率的LADRC控制方案。针对系统存在的外部扰动和模型参数摄动,利用Matlab进行仿真实验,结果表明,该控制方案不仅解耦控制效果良好,还具有较好的鲁棒性。Aimed at the problems of multivariable,strong-coupling and uncertainty in the gauge and shape control system for skin pass rolling of strip steel,a control scheme that combined linear active disturbance rejection control(LADRC)with gauge and shape control system was proposed.The total disturbance of system was estimated by linear expansion observer(LESO),and the PD control law was used as the feedback control rate.Moreover,in terms of the uncertainty of modeling parameter perturbation and external disturbance of system,the simulation was carried out by using the robust control toolbox in Matlab.The results indicate that the designed controller not only has good decoupling effect,but also shows good robustness.

关 键 词：平整轧制 板形板厚 线性自抗扰控制 线性扩张状态观测器 解耦控制 鲁棒性 

分 类 号：TG335[金属学及工艺—金属压力加工] TP273[自动化与计算机技术—检测技术与自动化装置]