锻压技术

轧机多缸调平系统耦合同步控制方法

英文标题：Coupling synchronous control method for multicylinder leveling system of rolling mill

作者：张红

分类号：TP271

出版年,卷(期):页码：2019,44(5):110-115

摘要：

为提高轧机多缸调平系统的运行平稳性，保证生产带板精度，提出了一种多缸调平系统的液压同步控制技术。建立多缸同步控制系统数学模型，确定系统载荷与各油缸伸缩位移之间的线性方程，以及同步控制系统负载特性的非线性方程。使用环形耦合多缸同步控制策略，综合考虑单个油缸相对于设定油缸位移的跟踪误差和相邻油缸之间的同步误差。利用变论域方法，建立基于变论域模糊PID的多缸同步控制的误差补偿控制算法。实验研究表明，该研究方法的最大俯仰倾角的均值，相比其他方法分别降低了14.33%、3.51%和11.29%，最大翻滚倾角的均值相比其他方法分别降低了15.01%、2.61%和9.04%，最大同步误差的均值相比其他方法分别降低了17.09%、5.09%和9.79%。验证了环形耦合控制策略和变论域模糊PID控制算法实现高精度的多缸同步控制技术的可行性。

In order to improve the running stability of multicylinder leveling system for rolling mill and ensure the accuracy of strip production, a hydraulic synchronous control technology of multicylinder leveling system was studied, and the mathematical model of multicylinder synchronous control system was established to determine the linear equation between system load and expansion displacement of each cylinder, as well as the nonlinear equation of load characteristics for synchronous control system. Then, the tracking error of a single cylinder relative to a given cylinder displacement and the synchronization error between adjacent cylinders were comprehensively considered by the ringcoupled multicylinder synchronization control strategy, and an error compensation control algorithm for multicylinder synchronous control based on variable universe fuzzy PID was established by variable universe method. The experimental results show that the mean of the maximum pitch angle of this method is reduced by 14.33%, 3.51% and 11.29% respectively, the mean of the maximum roll angle is reduced by 15.01%, 2.61% and 9.04% respectively, and the mean of the maximum synchronization error is reduced by 17.09%, 5.09% and 9.79% respectively compared with the other three methods. Thus, the feasibility of ring coupled control strategy and variable universe fuzzy PID control algorithm to achieve high precision multicylinder synchronous control technology was verified.

基金项目：

国家软科学研究计划项目(2006GX2B060)

作者简介：张红（1967-），女，硕士，副教授 Email：zhanghongworld1967@126.com

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