SYSTEM AND METHOD FOR CONTROLLING THICKNESS OF PLATE IN PLATE ROLLING

摘要

PURPOSE: A system and a method for controlling thickness of plate are provided to greatly reduce deviation between target thickness and actually measured thickness by calculating a numerical model from data using statistical method in the plate rolling process, thereby setting roll gap as much as target thickness. CONSTITUTION: The system(100) comprises a data storage unit(110) for storing a plurality of data for plate thickness, plate temperature (Tm), calculated plate thickness (h), mill constant (Mc), measured roll gap (Sm) and roll force (Fm) after rolling; a plate thickness parameter initial value operation unit(112) for operating parameter initial value by calculating the data stored in the data storage unit using statistical method; a plate thickness parameter operation unit(113) for operating parameter required for plate thickness calculation using the parameter initial value operated in the plate thickness parameter initial value operation unit; a thickness operation unit(115) for operating plate thickness from the parameter operated in the plate thickness parameter operation unit and roll gap measured in the present rolling process using numerical model; a roll gap operation unit(116) for operating roll gap set in the next rolling process by substituting the plate thickness operated in the numerical model for a plate thickness targeted in the next rolling process; and a controller(118) for moving work roll(132) in the next rolling process as much as the roll gap operated in the roll gap operation unit.