宽带钢热连轧机动态板形控制策略的研究与应用

来源期刊：钢铁2009年第2期

论文作者：彭鹏 杨荃 何安瑞

文章页码：44 - 47

关键词：热连轧机； 耦合模型； 解耦设计； 动态板形控制策略

Key words：tandem hot mill； coupling model； decoupling design； dynamic shape control strategy

摘    要：为了提高板形控制精度,对凸度平坦度控制耦合关系以及板形板厚控制耦合关系进行深入的研究分析,并采用相应的解耦控制策略是十分必要的。在板形板厚解耦设计的基础上,分析了不同控制方案下凸度平坦度控制之间的耦合影响关系,建立了相应的凸度平坦度耦合模型,并对其耦合特性进行了分析比较;之后,针对耦合模型特点进行凸度平坦度半解耦设计,以补偿凸度控制和平坦度控制之间的耦合影响关系,进而设计凸度平坦度解耦控制系统,并给出热连轧机组凸度平坦度解耦控制应用策略,组成完整的动态板形控制系统。在某厂1 580 mm四辊七机架热连轧机组投入使用后,较好地补偿了板形板厚控制、凸度平坦度控制之间的耦合影响关系,板形控制精度明显提高。

Abstract: In order to improve shape control precision,it is necessary to analyze both crown and flatness control coupling relation and shape and gauge control coupling relation,and adopt corresponding decoupling design and control strategies.First,based on shape and gauge decoupling design,the coupling relation between crown control and flatness control was analyzed to establish crown and flatness coupling models for different shape control schemes,and the coupling characteristics were analyzed and compared.Then,crown and flatness semi-decoupling design was made based on the coupling model characteristics,and then,the crown and flatness decoupling control system and application strategy for hot strip mill were designed to accomplish a complete dynamic shape control system.The operation on one 1580 mm 4 high 7 stand tandem hot mill showed that,the shape control precision was improved with this dynamic shape control system.