CONTROLLER FOR CONTINUOUS HOT ROLLING MILL

Japanese Patent JP3286057

B2

PURPOSE: To stably control the optimum tension of a looper, and to attain a rolled stock with high accuracy by designing a controller with the tension of a rolling stock, the response of the height of the looper, and a robustness designated, using in cooperation with the main motor of a rolling mill and the looper.
CONSTITUTION: The variable value of a process model, weight parameter reducing a tension variation in the controlling system of the height of a looper, weight function designating the response and the robustness of a tension controlling system, weight function designating the response and the robustness of the height controlling system of the looper, etc., are calculated by a control gain arithmetic means 26, a control gain is found, and it is set in a control arithmetic means 17. Calculations are performed by the control arithmetic means 17 according to a tension target value and the target value of the height of the looper from a setting means 25, a control gain from a control gain arithmetic means 26, and a detected value from a detector. The rotational speed command value of a main machine speed control means, and that of a looper motor speed control means, are calculated. These are sent to the main machine speed control means and the looper motor speed control means.

Hiroshi Otobe
Hiroyuki Imanari

JP400194A

May 27, 2002

January 19, 1994

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Nippon Steel Corporation
Toshiba Corporation

B21B37/00; B21B37/16; B21B37/18; B21B37/48; B21B37/50; B21B37/52; G05B13/02; H02P5/46; (IPC1-7): B21B37/48; B21B37/00; B21B37/18; G05B13/02; H02P5/46

JP5131208A

Kazuo Sato (3 others)

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