Title:
SPEED CONTROL METHOD FOR ROLL DRIVING MOTOR
Document Type and Number:
Japanese Patent JP3855506
Kind Code:
B
Abstract:
PROBLEM TO BE SOLVED: To provide a speed control method for a roll driving motor suitable for carrying out speed control while suppressing hunting even if a periodic fluctuation is generated in the speed achievement due to aging.
SOLUTION: A speed controller for roll driving motor comprises a fluctuation detector 36 for detecting periodical fluctuation in a moving average value from a moving average calculator 40, and a moving average calculator 38 for calculating the average of speed achievements from a speed achievement converter 34, i.e., a moving average value, based on a detection signal from the fluctuation detector 36 wherein the number of samples k required for calculating the moving average value is increased based on the detection signal from the fluctuation detector 36. The incremental control of the number of samples k is performed only when a command for operating a roll driving motor 15 at a constant speed is delivered from a main controller.
Inventors:
Goto, Takatoshi
Application Number:
JP1998000357172
Publication Date:
September 22, 2006
Filing Date:
December 16, 1998
Export Citation:
Assignee:
KAWASAKI STEEL CORP
International Classes:
B21B35/00; H02P29/00; G05B11/36; H02P5/00; B21B35/00; H02P29/00; G05B11/36; H02P5/00; (IPC1-7): H02P5/00; B21B35/00; G05B11/36
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