锻压技术

PID重复控制在轧辊偏心补偿的应用

英文标题：Application of PID repetitive control in roll eccentricity compensation

作者：荆学东陈鹏州

单位：上海应用技术大学

分类号：TP13

出版年,卷(期):页码：2018,43(3):120-123

摘要：

为了保证板材产品的高品质，需要分析轧制过程中影响轧制效果的各种干扰信号并采取一定的补偿方法。对轧制过程中的轧辊偏心干扰进行补偿，在PID厚度自动控制的基础上引入重复控制器。同时采用压力传感器测量轧辊的轧制压力，根据压力变化提取轧辊偏心信号的信息，根据采集的信息可以计算出偏心信号的周期信息，利用重复控制器对干扰信号进行跟踪和抑制。引入前向通道来解决重复控制器滞后问题，为了消除控制器对系统稳定性的影响，在控制器的控制器中加入低通滤波器。系统的PID控制器作为系统补偿器的一部分也经过改良，保证了系统有大的稳定裕度。

In order to ensure the high quality of sheets, various interference signals influencing the rolling effect in rolling process were analyzed, and the compensation method was adopted. Then, the roll eccentricity disturbance was compensated in the process of rolling, and the repetitive controller was introduced according to the automatic control in PID thickness. At the same time, the rolling pressure was measured by pressure sensor, and roll eccentricity signal information was extracted according to the pressure change. Furthermore, the cycle information of eccentricity signal was calculated based on the gathered information, and the interference signal was tracked and suppressed by repetitive controller. Finally, the lag problem of repetitive controller was solved by introducing the forward channel,and in order to eliminate the influence of controller on the system stability, a low-pass filter was added into the controller. Thus, the PID controller of the system regarded as a part of the system compensator was also improved, and a large margin of stability in the system was ensured.

基金项目：

上海市科学技术委员会科研计划项目（16090503700）

作者简介：荆学东(1968- )，男，博士，教授 E-mail：jingkd2003@aliyun.com 通讯作者：陈鹏州（1990- ），男，硕士研究生 E-mail：pzchen@foxmail.com

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