Regulation method for a cold-rolling mill train with complete mass flow regulation

A computer program product comprising a tangible data storage medium storing machine code which when executed directly by a control device for a multi-stand cold-rolling mill train has the effect that the control device regulates a cold-rolling mill train such that

• an initial setpoint speed is supplied to the strip feeding device so that the strip feeding device feeds the cold strip to the rolling stand passed through first at an initial actual speed which corresponds to the initial setpoint speed,
• a first setpoint speed is supplied to the rolling stand passed through first so that rolls of the rolling stand passed through first rotate at a first actual speed which corresponds to the first setpoint speed,
• a first thickness detection device arranged between the rolling stand passed through first and the rolling stand passed through next is used to detect a first actual thickness of the cold strip,
• a basic output signal is determined on the basis of the first actual thickness of the cold strip and a first setpoint thickness of the cold strip,
• the first setpoint speed, but not the initial setpoint speed, is adjusted on the basis of the basic output signal, so that the first actual thickness of the cold strip is matched to the first setpoint thickness of the cold strip,
• a initial thickness detection device arranged between the strip feeding device and the rolling stand passed through first is used to detect an initial actual thickness of the cold strip, and
• an initial feed-forward regulator is used to adjust the initial setpoint speed in such a way that the product of initial setpoint speed and initial actual thickness is set to a setpoint mass flow.

A control device for a cold-rolling mill train which has a plurality of rolling stands, through which a cold strip passes in succession, and a strip feeding device arranged upstream of the rolling stand passed through first,

• wherein the control device supplies an initial setpoint speed to the strip feeding device so that the strip feeding device feeds the cold strip to the rolling stand passed through first at an initial actual speed which corresponds to the initial setpoint speed,
• wherein the control device supplies a first setpoint speed to the rolling stand passed through first so that rolls of the rolling stand passed through first rotate at a first actual speed which corresponds to the first setpoint speed,
• wherein the control device receives a first actual thickness of the cold strip from a first thickness detection device arranged between the rolling stand passed through first and the rolling stand passed through next,
• wherein the control device has a thickness regulator which determines a basic output signal on the basis of the first actual thickness of the cold strip and a first setpoint thickness of the cold strip,
• wherein the control device adjusts the first setpoint speed, but not the initial setpoint speed, on the basis of the basic output signal, so that the first actual thickness of the cold strip is matched to the first setpoint thickness of the cold strip,
• wherein the control device has an initial feed-forward regulator which receives a initial actual thickness of the cold strip from an initial thickness detection device arranged between the strip feeding device and the rolling stand passed through first,
• wherein the initial feed-forward regulator adjusts the initial setpoint speed in such a way that the product of initial setpoint speed and initial actual thickness is set to a setpoint mass flow.