本文用数字仿真的方法,对热连轧机厚度调节系统克服水印温差干扰的方法进行了分析和研究.文中提出通过实测连轧机前架轧制力作为前馈补偿量来预报后架轧制力,并通过对后架轧制力进行自适应跟踪修正前馈补偿量的方法,可以有效地克服水印温差干扰.文中并提出根据残差平方和最小的原则,优选滤波增益因子,可以改进下一块钢的自适应效果.仿真计算的结果表明,应用本文方法效果显著.文中提出的方法,可供改造旧系统或设计类似新系统时参考. In this paper, the numerical simulation method is used to analyze and research the method of overcoming the temperature difference of the watermark in the thickness control system of the hot strip mill.The paper proposes to predict the force of the rear frame by measuring the rolling force of the front frame of the tandem rolling mill as the feedforward compensation, And the method of adaptive tracking and correcting the feedforward compensation of the rear frame rolling force can effectively overcome the watermark temperature difference interference. In the paper, according to the principle of the smallest sum of residuals and the minimum filter gain factor, the next steel can be improved The simulation results show that the method proposed in this paper is effective and the proposed method can be used as a reference for retrofitting an old system or designing a similar new system.