Controlling arrangement for a rolling stand and items corresponding thereto

A rolling arrangement comprising:

• a rolling stand including an actuating element;
• the actuating controlling a roll gap of the rolling stand while operating under load;
• and
• detecting elements sensing an actuating distance actual value of the actuating element;
• the detecting elements further sensing a first variable characteristic of a rolling force actual value with which a rolled stock is rolled in the roll gap of the rolling stand during the operation of the rolling arrangement;
• a controlling arrangement including a force controller and a position controller subordinate to the force controller;
• wherein the force controller determines an actuating distance correction value based at least on a rolling force setpoint value and rolling force actual value;
• and
• wherein the position controller determines a manipulated variable at least in part on the actuating distance correction value, an eccentricity compensation value, and an actuating distance actual value of an actuating element;
• and
• wherein the actuating element adjusts the roll gap based at least in part on the manipulated variable.

A method of operating a rolling arrangement including a rolling stand having an actuating element controlling a roll gap of the rolling stand, the method comprising the steps of:

• detecting an actual value of an actuating distance of the actuating element during the operation of the rolling arrangement;
• detecting at least one metric characteristic of an actual value of a rolling force with which a rolled stock is rolled in the gap of the rolling stand during the operation of the rolling arrangement;
• feeding a force controller with a rolling force setpoint value and a rolling force actual value;
• determining an actuating distance correction value based at least in part on the rolling force setpoint value and the actual value of the rolling force;
• feeding a position controller with the actuating distance correction value, an eccentricity compensation value, and the actual value of the actuating distance of the actuating element;
• determining a manipulated variable based at least in part on the actuating distance correction value, the eccentricity compensation value, and the actual value of the actuating distance of the actuating element;
• changing the actuating distance of the actuating element based at least in part on the manipulated variable.