Hot rolling strip laminar cooling control method

Computer Engineering and Applications ›› 2015, Vol. 51 ›› Issue (23): 236-238.

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Hot rolling strip laminar cooling control method

LI Shuanghong1, WANG Cong2, QIN Qiang1, YANG Jie3, LI Xi1

1.College of Automation, Huazhong University of Science and Technology, Wuhan 430074, China
2.Hot Rolling Plant, Wuhan Iron & Steel （Group） Company, Wuhan 430080, China
3.College of Material Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

Online:2015-12-01 Published:2015-12-14

热轧带钢层流冷却控制方法

李双宏1，王聪2，秦强1，杨杰3，李曦1

1.华中科技大学自动化学院，武汉 430074
2.武汉钢铁（集团）公司热轧总厂，武汉 430080
3.华中科技大学材料科学与工程学院，武汉 430074

Abstract

Abstract: In order to expand the range of final cooling temperature and improve the control precision of the hot rolling strip laminar cooling, how the key factors of the laminar cooling affect on the rolling temperature is analyzed in this paper, including laminar cooling process velocity, thickness and water spray quantity. The default values of production line before the start of the laminar cooling are reasonable set, and a mathematical model of laminar cooling and temperature control is developed. According to the characteristics of the laminar cooling process feed forward control, linear superposition control for laminar cooling control is used to achieve real-time control with feed forward control and speed compensation control strategy. The proposed method is used successfully in a laminar flow cooling production model, and the requirements of the temperature range expansion and improvement of the control precision are met.

Key words: laminar cooling, linear superposition control, mathematical model, control strategy

摘要： 针对热轧带钢层流冷却终冷温度范围的扩大以及控制精度提高的要求，通过分析影响层流冷却过程的关键性因素如，速度、厚度、喷水量对终轧温度的影响，以及各因素之间相互的作用关系，合理制定出层流冷却的初始值，并建立起层流冷却温度控制的数学模型。运用前馈控制、速度补偿控制的思想以及针对层流冷却特点的线性叠加控制对层流冷却过程进行实时控制。所提出的方法成功运用于某层流冷却生产模型中，实现了终冷温度范围扩大以及控制精度提高的目标。

关键词: 层流冷却, 线性叠加, 数学模型, 控制方法

LI Shuanghong1, WANG Cong2, QIN Qiang1, YANG Jie3, LI Xi1. Hot rolling strip laminar cooling control method[J]. Computer Engineering and Applications, 2015, 51(23): 236-238.

李双宏1，王聪2，秦强1，杨杰3，李曦1. 热轧带钢层流冷却控制方法[J]. 计算机工程与应用, 2015, 51(23): 236-238.

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Hot rolling strip laminar cooling control method

热轧带钢层流冷却控制方法

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