Title:
SHAPE CONTROL METHOD IN PLATE ROLLING
Document Type and Number:
Japanese Patent JP3304796
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a versatile shape control method for plate rolling capable of simultaneously and optimally controlling all shape control mechanisms and moreover easily setting the manipulated variable of a controller difficult to reach an operational limit with a specified control mechanism.
SOLUTION: In this control method, shapes of plural places in the width direction of the rolling plate are detected with a shape detector, respective manipulated variables of plural shape control mechanisms are obtained based on the output by the shape detector, respective shape control mechanisms are operated to control the shape of the plate based on the manipulated variable. In this case, a shape deviation of obtained from the difference between the output distribution by the shape detector 7 and a pre-set objective shape distribution with a shape separating device 10, and the shape deviation is separated into plural numbers based on the frequency component. And the manipulated variables of respective shape control mechanisms 13, 14 are obtained based on respective separated shape deviations with optimum manipulated variable arithmetic units 11, 12.
Inventors:
Nobutsugu Suzuki
Application Number:
JP34160996A
Publication Date:
July 22, 2002
Filing Date:
December 20, 1996
Export Citation:
Assignee:
Nippon Steel Tube Co., Ltd.
International Classes:
B21B37/00; B21B37/38; B21B38/02; (IPC1-7): B21B38/02; B21B37/00; B21B37/38
Domestic Patent References:
| JP4279208A |
Attorney, Agent or Firm:
Muneharu Sasaki (3 outside)