SHAPE CONTROL DEVICE FOR ROLLING MATERIAL

PURPOSE:To improve shape accuracy by making shape control by the control model determined by using the conversion matrix determined in accordance with the recognition point of a shape parameter in the transverse direction determined from an elongation rate and converting a preliminarily prepd. control model. CONSTITUTION:n-Pieces of the shape parameters are determined in a shape parameter conversion processing unit 11 from the n-th degree of the power series factor determined from the elongation rate signal by using a power series converter 10. The recognition point is then calculated by a shape parameter recognition point selector 17 and further the shape parameter conversion matrix is determined; thereafter, the shape parameter is calculated. The correction amt. of rolling conditions is calculated by using the deviation between the target value of the shape parameter and the actual value, etc., and the control is executed. The accuracy of the sectional shape is improved by the device constituted in the above-mentioned manner.