Multi-objective optimal edge-drop control in tandem cold rolling of silicon steel strip

In cold rolling of silicon steel strip, edge drop directly affects the side cutting and yield steel. To improve in process, a multi-stand coordinated control strategy model based on multi-objective optimization are proposed. The first step is to analyze influence each stand work roll shifting (WRS) through finite element (FEM), then determine effectiveness actuator. Meanwhile, fitting proposed solve limitation caused by discrete change efficiency factors solving optimal adjustments WRS. On this basis, target for formulated, adjustment WRS established. realize among mill stands, has been established overall modeling method. improved penalty function algorithm developed calculate stand. experiments application show that can effectively accuracy continuous rolling.