CAJ | 학술논문

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。
변강시랭알대강공제적중요판형삼수지일，타직접영향착대강적성재솔화하유행업산품적질량。목전변강조절적폐배계통중존재엄중적체후문제，해결폐배계통시간체후문제대우변강공제구유중요의의。전통적체후공제방법대우고속알제적랭련알공제능력흔약，기우차，주요연구예측함수산법대변강폐배공제효과。분석변강판형폐배공제계통중인기반궤신식체후적주요원인，채용예측함수산법대함유체후배절적폐배계통진행공제，연구예측함수산법대변강폐배체후공제적동태특성。방진결과표명，예측함수산법대우공제모형시부정학구유량호적공제품질，대우외계간우야구유량호적항간우성，제차지외，예측함수구유재선계산량소、괄합우고속공제적특성，인이사용예측함수산법가이제고변강판형공제정도。
One of the most important parameters of shape control of tandem cold mill is the edge drop, it affects both yield of the strip and the quality of the products. There is a large time-delay on the edge drop closed-loop control, it’s necessary to solve this problem for improving the quality of the shape of tandem cold mill. It is difficult to obtain satisfactory results with the traditional control method. So,the main content of the article makes two key contributions. It analyses the main reason of the time-delay on the edge drop closed-loop control. The dynamic characteristics of the time-delay of the edge drop closed-loop control by using the predictive functional control (PFC) algorithm are studied. The simulation results show that the PFC algorithm has good control quality for both accurate control model and non-accurate control model, and the anti-interference ability is stable. Besides, the control accuracy of the edge drop is improved.