The work roll bending on five stands are adjusted based on the periodical change of work roll shift position to decouple the coupling between edge drop and flatness control and obtain the optimum flatness control 该模块根据5个机架的工作辊轴向位置的变化周期性随动调整5个机架的工作辊弯辊，化解平坦度和边降的耦合关系，以获得最佳的板形控制效果。
