Title:
METHOD AND DEVICE FOR MONITORING STATE OF ROLLING BEARING
Document Type and Number:
WIPO Patent Application WO/2019/044496
Kind Code:
A1
Abstract:
According to the present invention, the remaining service life of a rolling bearing is estimated. A method for monitoring the state of a rolling bearing according to the present invention comprises: a step for creating a classifier by means of machine learning; and a step for monitoring the state of the rolling bearing. The step for creating the classifier includes: steps (S11-S13) for calculating a set of features about first to third vibration data; and a step (S14) for creating the classifier by machine learning the first to third vibration data. The first vibration data is vibration data about the rolling bearing in a state in which damage of a first length is formed in the circumferential direction of a raceway surface. The second vibration data is vibration data about the rolling bearing in a state in which damage of a second length shorter than the first length is formed in the circumferential direction of the raceway surface. The third vibration data is vibration data about the rolling bearing for when the raceway surface is normal. The step for monitoring the state includes a step for using the classifier to calculate the remaining service life until the length of the damage reaches the second length.
Inventors:
KITAI MASASHI (JP)
Application Number:
PCT/JP2018/030301
Publication Date:
March 07, 2019
Filing Date:
August 14, 2018
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
G01M13/04
Foreign References:
| JP2017026020A | 2017-02-02 | |||
| JP2016062258A | 2016-04-25 | |||
| JP2011107093A | 2011-06-02 | |||
| US20100280772A1 | 2010-11-04 | |||
| JP2003005822A | 2003-01-08 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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