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提出一种带钢热连轧精轧机组负荷分配的优化计算策略,采用多目标优化算法离线计算确定精轧各机架的轧制力分配系数,采用“压下模式+轧制力模式”相结合的方式实现负荷分配在线计算。为了确定各精轧机架的轧制力分配系数,建立兼顾轧制功率最小、负荷均衡与板形良好的负荷分配多目标优化模型;为了实现负荷分配在线计算,根据压下模式负荷分配计算确定厚度分配的初始值,根据CLAD算法进行轧制力模式负荷分配迭代计算,最后采用压下模式分配计算确定的压下率分布范围对轧制力模式分配结果进行限幅处理。新方法已成功应用于梅钢1 780mm热连轧生产线,在线应用表明该方法可以有效减少操作工干预,提高带钢精轧过程的轧制稳定性。
An optimization method for load distribution of hot strip mill is proposed. The multi-objective optimization algorithm is used to calculate the rolling force distribution coefficient of each frame. The “rolling mode + rolling force mode” "A combination of ways to achieve load distribution online calculation. In order to determine the rolling force distribution coefficient of each finishing stand, a multi-objective optimization model considering the minimum rolling power, load balance and plate shape is established. In order to realize online calculation of load distribution, the thickness According to the CLAD algorithm, the load distribution of the rolling force model is iteratively calculated. Finally, the distribution of the rolling force mode distribution is limited by the distribution range of the rolling mode distribution. The new method has been successfully applied to the production line of 1 780mm hot rolling mill in Meishan Steel Co., Ltd. The online application shows that this method can effectively reduce the intervention of operators and improve the rolling stability of the strip finishing process.