| 摘要 |
PURPOSE:To shorten a time until normal operation is attained in the case where a material is exchanged by mitigating labor of an operator by automating control of a bank quantity of a downstream bank, by a method wherein a feed forward control method where control is performed by forecasting variation of a consumption from the bank or an inflow quantity into the bank is used jointly in addition to feedback control where control is performed by requesting for excess and deficiency in the bank quantity. CONSTITUTION:In the case where it is decided that the total of forecast bank variation among excess and deficiency of the second and third banks 27, 28 obtained through bank sensors 38, 40, roll speeds V1-V4 each, roll gap motor positions MIL, MIR, M2L, M2R, M4L, M4R each, roll cross motor positions Mc1, Mc3 and a control cycle Tc based on a deviation quantity from a reference value of roll bending pressure P2 exceeds certain limit, a roll gap motor position, roll cross motor position and roll speed are controlled by controlling a roll gap adjusting motor, roll cross adjusting motor and roll driving motors M1, M2, M3, M4. |
