Targeted adjusting of the contour using corresponding specifications

An operating method for a rolling line wherein the rolling line comprises a number of roll stands for rolling a flat rolling material, the method comprising:

• providing a control system operable for controlling the rolling line;
• prior to the rolling of the flat rolling material in the rolling line, the control system of the rolling line receiving actual variables (I) of the flat rolling material before the rolling of the flat rolling material in the rolling line and receiving target variables (Z) of the flat rolling material after the rolling of the flat rolling material in the rolling line, where the target variables (Z) comprise a plurality of discrete characteristic variables that define a contour (K) of the flat rolling material, the discrete characteristic variables comprising at least a profile value (K1), and at least one edge value (K2, K2′, K2″) for a thick edge, or at least one dogbone value (K3, K3′, K3″) for a dogbone, or at least one edge drop value (K4, K4′, K4″) for an edge drop, or at least one taper value (K5) for a thickness taper;
• prior to the rolling of the flat rolling material in the rolling line, the control system determining desired values (S*) for control variables (S) for the roll stands of the rolling line, based on the actual variables (I) of the flat rolling material and the target variables (Z) of the flat rolling material, in combination with a description (B) of the rolling line which uses a model of the rolling line;
• the control system determining the desired values (S*) for the control variables (S) in such a way that expected variables (E1) for the flat rolling material after the rolling of the flat rolling material in the rolling line are aligned as much as possible with the target variables (Z);
• the control system transferring the desired values (S*) to the roll stands of the rolling line, such that the flat rolling material will be rolled in the rolling line according to the transferred desired values (S*);
• rolling the flat rolling material in the rolling line using the transferred desired values (S*);
• the control system capturing values of the control variables (S) during rolling the flat rolling material;
• after the rolling of the flat rolling material, the control system capturing, or determining contour (K) of the rolled material on the basis of the captured control variables (S);
• after the rolling of the flat rolling material, determining at least one discrete characteristic variable (K1 to K5, K2′ to K4′, K2″ to K4″) for the rolled material from the captured or determined contour (K) of the rolled material;
• the control system re-determining expected variables (E2) based on the actual variables (I) of the flat rolling material and the captured control variables (S) by using the model of the rolling line for the flat rolling material;
• the control system comparing the re-determined expected variables (E2) with the at least one discrete characteristic variable (K1 to K5, K2′ to K4′, K2″ to K4″) defining the captured or determined contour of the rolled material;
• and
• the control system correcting the model of the rolling line on the basis of the comparison.