Error Analysis for AGC Model and Research for the New Function of Mill Characteristic Curve

Abstract This paper gives two kind of lock plans of ACC ard advances two control methods of pressure ACC that is one step to the position and several steps to the position. the characteristics of the control methods is discussed, the common formula of the reference value of roll gap is deduced, and the stable error of ACC system is analysed. The paper also studies mill characteristic curve and advances a new optimizing method. so the precision and fitting degree of mill characteristic curve are effectivly improved.