摘要：AbstractIn flat steel rolling, roughing mills are used to roll slabs into thin plates within 5 to 7 consecutive reversing rolling passes with decreasing thickness. Some of these mills are equipped with edger rolls to control also the width of the plate. Edger rolls are usually mounted upstream of the roll gap. In the best case, a perfect cuboid-shaped plate without camber and thickness wedge leaves the roughing mill. In practice, however, lateral asymmetries like temperature gradients and thickness inhomogeneities may cause the plate to rotate in the roll gap with respect to the vertical axis and to form a camber or thickness wedge or both. In the worst case, these effects not just deteriorate the product quality but also jeopardize plant equipment like side guides. To improve the product quality and reduce wear of plant equipment, active control of the motion and camber of the plate is desirable. In this work, a mathematical model for both the planar motion and the resulting shape of the plate is briefly summarized. Based on this validated model, a model predictive control strategy that calculates optimal control inputs (roll gap tilt and lateral position of edger rolls) for all remaining rolling passes is developed. The performance of the proposed control concept is demonstrated in simulation studies.
关键词：Keywordshot rolling of steel platesroughing mill with edger rollssteel industrymodel-based controlcamber controloptimal controlmodel predictive control
