摘要
受到测量技术的限制,目前步进式加热炉生产过程中无法精确获得钢坯在炉内的温度分布的在线测量数据,只能依赖于炉内板坯温度分布的数学模型实现对各炉区炉温的控制,由于模型与实际生产存在较大偏差,导致板坯加热效果常常不能达到预期效果。为克服该问题,首先介绍加热炉板坯温度分布的数学模型,并基于该模型提出一种步进式加热炉钢坯温度模型在线校正方法,针对加热炉各炉区分别建立适用于模型参数校正的钢坯机理型模型,在线运行时,将各炉区出口附近的红外测温数据信息引入校正机制中,通过校正计算模型参数,提高模型的精度和控制的效果。
Nowadays the online data on temperature distribution of slabs inside the walking beam furnace cannot be acquired precisely under the limitation of measurement technologies. As a result, the furnace temperature control can only depend upon the mathematical model of slab temperature distribution. However, the apparent difference between the model and the real process often leads to the unexpected heating effect on slabs. In order to overcome the problem, in this paper, a mathematical model of temperature distribution of slabs with correctable parameters is introduced, based on which an on-line correction approach for slabs in the walking beam furnace is proposed. Specifically, the slab models with correctable parameters are established for each furnace zone, respectively. During the heating process, the temperature data measured by the infrared thermometers located at the outlet of each furnace zone is incorporated into the correction computation to improve the accuracy of the model and the effect of control.
出处
《控制工程》
CSCD
北大核心
2017年第6期1113-1118,共6页
Control Engineering of China
关键词
步进式加热炉
温度模型
校正
钢坯
Walking beam furnace
temperature model
correction
slab
