The system of roll mill press down is controlled to compensate the thickness variation of the hot strip mill so as to improve the hot-rolled strip thickness accuracy.

• 从各种随机噪声的轧制力信号这一复杂高频干扰周期波中分离出偏心信号,控制轧机在压下系统实现对偏心的补偿,以提高热轧带钢的厚度精度。