摘要
莱钢热轧窄带钢步进式加热炉计算机优化控制系统中的热工控制由直接数字控制（ＤＤＣ）和计算机监督控制（ＳＣＣ）两级组成。ＤＤＣ级的燃烧控制实现了双交叉限幅控制，并提出切除积分的４点补充条件，改善了控制效果。同时以软件的方式实现了煤气热值的动态实时估算，保证了空气消耗系数随热值同步变化。ＳＣＣ级提出了考虑二维效应的一维平板模型，提高了模拟的精度，并以段法的离线分析解决了总括热吸收率的动态补偿问题，本研究将模型扩展到金属氧化烧损量的在线实时跟踪计量，有利于生产管理。本系统操作简便，具有完备的诊断和报警功能，为其连续正常运行创造了有利条件。
The thermal control system on walking beam furnace in Laiwu Strip Rolling Mill is comprised of direct digital control(DDC) and supervisory computer control(SCC)The control is improved by double cross limited range of DDC combustion control and by four compensation conditions of integral separationThe coefficient of air consumption is changed automatically with calorific value using a software for dynamic estimation of gas calorific valueThe accuracy of simulation is improved by considering the dimensional effect in one dimensional slab model of SCC,and the dynamic compensation of total heat exchange factor is achieved by offline analysis based on Zone methodIn this study an online simulation of metal loss due to oxidation is presented too for enhancing managementBeing convince in operation and equipped with diagnosis and alarm devices,the system can work normally and continuously
出处
《钢铁》
CAS
CSCD
北大核心
1999年第5期57-60,33,共5页
Iron and Steel
关键词
步进炉
计算机
优化控制
轧钢加热炉
walking beam furnace,computer,optimized control,Zone method
