Rolling system and control method and control device comprises a method method, and the apparatus and stratification table math unit

摘要

PPROBLEM TO BE SOLVED: To provide a stratified table numerical arithmetic device capable of calculating a predetermined numerical value to a grid having no past result value, provide a method used for the same, provide a control apparatus having the device, provide a control method having the method, and provide a rolling system. PSOLUTION: The stratified table numerical arithmetic device 2 includes: a stratified table storage part 21 for storing a matrix shaped stratified table; a representative value calculation part 22 for obtaining a predetermined representative value based on the parameter value of the grid per a known grid of the parameter value at the stratified table; an approximation curved surface calculation part 23 for obtaining an approximation curved surface that approximates each representative value at each known grid of the parameter value calculated at the representative value calculation part; and an unknown representative value calculation part 24 for obtaining a representative value at an unknown grid of the parameter value at the stratified table using the approximation curved surface calculated at the approximation curved surface calculation part 23. PCOPYRIGHT: (C)2011,JPO&INPIT