基于预测函数算法的冷连轧边降滞后控制研究

发布时间：2018-04-28 00:47

本文选题：边降板形 + 闭环控制　；参考：《机械工程学报》2015年18期

【摘要】：边降是冷轧带钢控制的重要板形参数之一,它直接影响着带钢的成材率和下游行业产品的质量。目前边降调节的闭环系统中存在严重的滞后问题,解决闭环系统时间滞后问题对于边降控制具有重要意义。传统的滞后控制方法对于高速轧制的冷连轧控制能力很弱,基于此,主要研究预测函数算法对边降闭环控制效果。分析边降板形闭环控制系统中引起反馈信息滞后的主要原因,采用预测函数算法对含有滞后环节的闭环系统进行控制,研究预测函数算法对边降闭环滞后控制的动态特性。仿真结果表明,预测函数算法对于控制模型是否精确具有良好的控制品质,对于外界干扰也具有良好的抗干扰性,除此之外,预测函数具有在线计算量小、适合于高速控制的特性,因而使用预测函数算法可以提高边降板形控制精度。
[Abstract]:Side drop is one of the important shape parameters controlled by cold rolled strip, which directly affects the yield of the strip and the quality of the products in the downstream industry. At present, there is a serious delay problem in the closed-loop system with edge-drop regulation, so it is very important to solve the time-delay problem of the closed-loop system. The traditional hysteresis control method is very weak for the cold continuous rolling in high speed rolling. Based on this, the effect of predictive function algorithm on the closed-loop control of edge drop is mainly studied. This paper analyzes the main causes of feedback information lag in the edge-drop shape closed-loop control system, uses the predictive function algorithm to control the closed-loop system with delay link, and studies the dynamic characteristics of the prediction-function algorithm for the edge-drop close-loop hysteresis control. The simulation results show that the predictive function algorithm has good control quality for the accuracy of the control model and good anti-interference to the external interference. In addition, the prediction function has a small amount of on-line calculation. It is suitable for high speed control, so the precision of shape reduction control can be improved by using predictive function algorithm.
【作者单位】：北京科技大学国家板带生产先进装备工程技术研究中心;
【基金】：国家科技支撑计划资助项目(2015BAF30B01)
【分类号】：TG334.9

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