板坯连铸二次冷却过程动态交互式仿真系统  

Dynamic and Interactive Simulation System for Secondary Cooling Process in Continuous Casting

作　　者：刘如九[1,2] 张振山[1] 郭朝晖[3] 柴天佑[1] 

机构地区：[1]流程工业综合自动化国家重点实验室(东北大学),沈阳110004 [2]北京交通大学机电学院,北京100044 [3]宝山钢铁股份有限公司,上海201900

出　　处：《系统仿真学报》2011年第9期1819-1825,共7页Journal of System Simulation

基　　金：国家自然科学基金重点资助项目(60534010);国家973计划项目(2002CB312201);国家863计划项目(2006AA04Z179;2007AA041405);国家创新研究群体科学基金资助项目(60521003);新世纪优秀人才支持计划(NCET–05–0294);北京交通大学基金项目(2011JBM103)

摘　　要：连铸二次冷却过程控制水平的提高对提高连铸坯的质量和产量具有重要作用。为研究二次冷却设定控制算法,把铸流切片的生命周期模型与凝固传热模型相结合,对非线性热物性参数与凝固潜热进行处理,建立了二次冷却过程的动态仿真模型;并以此为基础研制了动态交互式仿真软件系统。系统由虚拟二次冷却对象、控制算法、监控操作、平台管理四个子系统组成;能够对板坯和方坯在非稳态浇铸工况下铸流的凝固过程进行仿真,得出暂态和稳态全过程的铸流内部温度场、凝固坯壳厚度、凝固终点位置、液相穴形状等的变化过程;给出二次冷却过程对输入与扰动信号的动态响应。系统在仿真过程中的人机交互、可移植性方面做了专门设计,为深入研究和优化二次冷却设定控制算法提供了有力的实验平台。仿真模型与仿真软件系统成功应用于某钢企二次冷却与轻压下设定控制系统的研制、测试与在线运行。The application of control to the spray zones in the secondary cooling process of continuous casting is the important approach to improve the product＇s quality and the casters＇ productivity.In order to study the setting control algorithm for secondary cooling process,a dynamic simulation model was proposed based on the strands＇ life-cycle model and the heat-transfer and solidification model.Based on the dynamic simulation model,a simulation software system was developed,which consists of four modules,namely virtual process,control algorithm,supervision client and platform management.This system could simulate the dynamic process under the time-varying casting conditions such as changing speed,water flux,casting temperature,steel grades etc,obtain the two-dimensional and three-dimensional temperature distribution,solidification path and crater end position in the strands,at both transient-state and steady-state,so that the dynamic response to the time-varying input variables and disturbance variables could be studied.It is also a configurable system,with programming interface for control algorithm.This system can serve as an effective experimental platform to further the study of the control algorithm for the secondary cooling process and soft reduction system.

关 键 词：仿真系统 动态仿真 过程控制 二次冷却 连铸 交互式仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] TF341.6[自动化与计算机技术—计算机科学与技术]