Title:
パルス発生器を用いた圧延機のロールの偏心検出方法及び装置
Document Type and Number:
Japanese Patent JP4017599
Kind Code:
B2
Abstract:
The present invention relates to a method and an apparatus for detecting a roll eccentricity element of a rolling mill, which is occurred by the difference between a rotation center and a geometric center of a roll. The present method for detecting a roll eccentricity of a rolling mill comprises the steps of: inputting data with respect to a rolling load from the rolling mill, a pulse generating signal from a pulse generator, input and output signals of the steel plate, respectively; determining whether input signal of the steel plate and marker pulse signal of the pulse generator are being inputted; storing the rolling load of the rolling mill corresponding to respective sample pulse signals of the pulse generator in a buffer; calculating alterations of the rolling load by subtracting average rolling load from the rolling load being stored in the buffer; detecting eccentric fundamental wave and radio frequency elements by performing non-linear curve fittings to alteration signal of the rolling load; and determining whether output signal of the steel plate is being inputted and when the output signal is being inputted, detecting procedure is terminated and when the output signal not being inputted, it is returned to the step of storing and the subsequent procedure is repeatedly performed. The present invention is capable of accurately detecting roll eccentricity elements to eccentric fundamental wave and radio frequency elements, using a pulse signal of the pulse generator and a rolling load signal of a load cell. Also, such detection of the roll eccentricity can be performed in reliability and durability, even in severe working conditions of the rolling mill.
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Inventors:
Jeon, John-Hug
Choi, Il-Theop
Choi, Il-Theop
Application Number:
JP2003547090A
Publication Date:
December 05, 2007
Filing Date:
April 26, 2002
Export Citation:
Assignee:
POSCO Company Limited
International Classes:
B21B31/07; B21C51/00; B21B37/66; G01B11/26; B21B37/16; B21B38/00
Domestic Patent References:
| JP60502146A | ||||
| JP61262415A | ||||
| JP5933021A |
Attorney, Agent or Firm:
Masaaki Ogura