基于细分PI控制的热连轧卷取机自动踏步控制仿真和优化  

Simulation and optimization of automatic jump control of hot strip mill coiler based on subdivision PI control

作　　者：吴楠 李静[1] 申屠南凯[1] 张勇军[1] WU Nan;LI Jing;SHENTU Nankai;ZHANG Yongjun(National Engineering Research Center for Advanced Rolling and Intelligent Manufacturing,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]北京科技大学高效轧制与智能制造国家工程研究中心,北京100083

出　　处：《冶金自动化》2023年第4期70-78,共9页Metallurgical Industry Automation

基　　金：国家自然科学基金区域联合重点项目(U21A20483)。

摘　　要：卷取是带钢热连轧产线的关键步骤。因为自动踏步控制(auto jump control,AJC)具有可以使助卷辊避让卷取过程中钢卷层差的功能,所以其成为卷取机控制理论的研究热点。为了解决AJC动态响应不理想而产生的带钢头部质量问题,基于某厂1450 mm产线设计方案,使用AMEsim软件搭建仿真平台,构建了准确的助卷辊运动模型。在控制策略上,利用设定值余量延长压力控制时间,细分设置PI参数并根据需求对参数进行整定,该策略已于某厂1450 mm产线控制平台实现成功应用,解决了位置控制动作滞后而无法跟踪设定值的问题,AJC效果及节约响应指标均得到较大改善且累计位置误差减小90%。Coiling is an key step in the hot strip mill production line.Automatic jump control(AJC)has become a hot research topic in the control theory of coiler due to its function of avoiding the layer difference generated by the steel coils during the coiling process.In order to solve the strip head quality problems caused by the unsatisfactory dynamic response of AJC,based on the design scheme of 1450 mm production line of a plant,a accurate movement model of the wrapper roll was constructed by using the AMEsim software to build a simulation platform.The control strategy was to use the set value margin to extend the pressure control time,set PI parameters in segments and adjust the parameters according to requirement.The strategy was successfully applied on the control platform of a 1450 mm production line in a plant,solving the problem of lagging position control action and unable to track the set value.The AJC effect and saving response index are greatly improved,a nd the accumulated position error is reduced by 90%.

关 键 词：自动踏步控制 卷取机 热连轧 助卷辊 细分PI控制 

分 类 号：TG333.24[金属学及工艺—金属压力加工]