Title:
STEEL PLANT CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/239494
Kind Code:
A1
Abstract:
This steel plant control device comprises the following configuration. A subtracter (1) outputs the deviation between a target value and a control amount fed back from a control object (1). A PI controller (3) inputs the deviation, and using a proportional operation and an integral operation, outputs a first operation amount to make the deviation smaller. A first-order lag controller (4) outputs a second operation amount for which the deviation is multiplied by a proportional gain, and further multiplied by a first-order lag element. An adder (5) outputs to the control object a final operation amount for which the second operation amount is added to the first operation amount. The present invention is characterized in that in a band that is lower than a first frequency f1, the gain of the PI controller is higher than the gain of the first-order lag controller, and in the band from the first frequency f1 to a second frequency f2, the gain of the first-order lag controller is higher than the gain of the PI controller, and in a band higher than the second frequency f2, the gain of the PI controller is higher than the gain of the first-order lag controller.
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Inventors:
TACHIBANA MINORU (JP)
Application Number:
PCT/JP2018/022458
Publication Date:
December 19, 2019
Filing Date:
June 12, 2018
Export Citation:
Assignee:
TOSHIBA MITSUBISHI ELEC IND (JP)
International Classes:
G05B13/02; B21B37/18; B21B37/50
Foreign References:
| JP2007134823A | 2007-05-31 | |||
| JP2011138200A | 2011-07-14 |
Attorney, Agent or Firm:
TAKADA, Mamoru et al. (JP)
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