摘要
精轧终轧温度的精确控制对提高带钢成品质量有重要的作用。分析了宝钢2050热轧线温度控制的基本特点,从温度前馈预测和反馈控制方面对现有的温度控制系统进行分析和研究。建立了考虑带钢厚度的差分传热模型,计算带钢厚度方向上各节点的热传导,获得精轧多机架及终轧的出口温度;提出结合模型预测和反馈控制的方法,即采用前馈控制调节轧制速度保证带钢头部温度命中率,采用反馈控制调节水量对带钢全长温度进行动态调整。应用结果表明温度差分模型预测及反馈控制精度比原2050mm热轧线温度系统有较明显提高。
The precise control for the product strip temperature is one of the effective approaches to promote the quality in the finish rolling production.It presents the basic features of the control strategies,temperature feedforward control,temperature feedback control for the strip temperature control system of Baosteel 2050mm finish rolling in details.Considering the strip thickness,a differential heat transfer model is proposed to calculate the heat conduction of the strip thickness direction of each node and attains multi-stand and finishing rolling exit temperature.In addition,the proposed method combined with the model prediction and feedback control,the feedforward control to adjust the rolling speed to ensure the strip head temperature hit rate dynamically adjusted using feedback control regulating water temperature of the strip full-length.The application results show that the temperature difference model prediction and feedback control accuracy is significantly improved than the original 2050mm temperature system.
出处
《机械设计与制造》
北大核心
2013年第2期177-179,共3页
Machinery Design & Manufacture
基金
国家自然科学基金资助项目(51205336)
厦门市科技计划项目(3502Z20113036)
关键词
带钢温度
温度前馈控制
温度反馈控制
差分模型
Strip Temperature
Temperature Feedforward Control
Temperature Feedback Control
Difference Model
