冷连轧机轧制力在线计算模型

通过将轧制变形区离散化的方法,在考虑变形区内横截面上张应力、摩擦应力等影响因素沿带钢轧制方向分布规律及其与带钢厚度及压下量的关系的基础上,采用数学模型和神经网络相结合的方法计算了金属变形抗力,建立了冷连轧机轧制力在线计算数学模型. 经大型工业轧机生产实践数据检验,该冷连轧机在线轧制力计算模型预报误差控制在6.1%以内,满足模型在线控制要求,可提高在线控制轧制力模型的计算精度.

Online calculation model of rolling force for a tandem cold rolling mill

The distributed rules of some rolling factors such as tension and friction stress in the strip transect along the rolling direction as well as the relationships between these factors and strip thickness were discussed by discretization of the rolling deformation zone. The metal deformation resistance was calculated by a mathematic model with the ANN technique. An online calculation model of rolling force was setup for a tandem cold rolling mill. Experimental data of a huge industrial rolling mill showed that the errors of the predict model were less then 6.1%. It is concluded that this proposed model can meet the requirements of online control and improve the online calculated precision of rolling force.