Research on the control strategy of coning amount and ASU adjustment considering profile and high-order flatness cooperative control
Research on the control strategy of coning amount and ASU adjustment considering profile and high-order flatness cooperative control
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DOI：
10.1080/14484846.2023.2295106
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发表时间：
2024-01
影响因子：
1.4
通讯作者：
Guanyu Zhou;An-rui He;Chao Liu;Zhengqiao Liu;Peng-Fei Liu;Qiang-Guo Zhao
中科院分区：
文献类型：
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作者：
Guanyu Zhou;An-rui He;Chao Liu;Zhengqiao Liu;Peng-Fei Liu;Qiang-Guo Zhao
在20辊轧机的生产中，经常出现高阶板形缺陷。为实现某20辊轧机板形和高阶板形的协同控制，基于ABAQUS软件建立了辊系与板带耦合的一体化模型。结果发现，随着中间锥形辊的锥度量的增加，辊型评价指标C25降低，同时工作辊轴线出现高阶挠曲变形，这可能导致高阶平直度缺陷的产生。随后，提出了一种新的锥度量和支承辊分段压下量（ASU）控制调整的控制策略，以确保板形评价指标C25满足要求，同时消除了辊型偏移（锥度量）控制带来的高阶板形缺陷风险。采用粒子群优化算法确定了控制策略的具体组合形式。工业应用结果表明，采用新的控制策略后，距边缘75 mm ~ 300 mm区域的最大压应力可降低40%以上。
In the production of a 20-high mill, high-order flatness defects occur frequently. To achieve collaborative control of the profile and high-order flatness of a 20-high mill, an integrated coupling model of the roll system and strip has been established based on ABAQUS software. It has been found that as the coning amount of the intermediate taper roll increased, the profile evaluation index C25 decreased, while the work roll axis exhibited high-order deflection deformation, which could lead to the generation of high-order flatness defects. Subsequently, a novel control strategy of the coning amount and backup roll segmented reduction (ASU) control adjustment has been proposed to ensure that the profile evaluation index C25 meets the requirements while eliminating the risk of high-order flatness defects caused by roll shifting (coning amount) control. The specific combination form of the control strategy has been determined by using the particle swarm optimisation (PSO) algorithm. The Industrial application results show that the maximum compressive stress in the area 75 mm-300 mm away from the edge can be reduced by more than 40% after using the novel control strategy.