| 摘要 |
<P>PROBLEM TO BE SOLVED: To perform a high precision plate thickness control. <P>SOLUTION: A plate thickness control method of a rolling mill includes measuring the plate thickness of a rolled material W, calculating the roll gap of a work roll 5 which rolls the rolled material W based on the measured plate thickness, and controlling a rolling device 11 according to the calculated roll gap ΔS, wherein the deviation of the plate thickness of the rolled material W is resolved to frequency components, a control gain value to the rolling device 11 is calculated for every frequency component, the inverse of the calculated control gain value is multiplied by the roll gap ΔS obtained by the measurement, and at the same time, the value obtained by the multiplication is made to be a roll gap ΔS' to which the rolling device 11 is applied, and the plate thickness is controlled based on the roll gap ΔS'. <P>COPYRIGHT: (C)2012,JPO&INPIT |
