ANOMALY DETECTION DEVICE, ANOMALY DETECTION METHOD, ANOMALY DETECTION PROGRAM, AND SYSTEM FOR DETECTING ANOMALY IN BEARING

Title:

ANOMALY DETECTION DEVICE, ANOMALY DETECTION METHOD, ANOMALY DETECTION PROGRAM, AND SYSTEM FOR DETECTING ANOMALY IN BEARING

Document Type and Number:

WIPO Patent Application WO/2022/131170

Kind Code:

A1

Abstract:

This anomaly detection device has: a data acquisition unit that acquires a signal that captures the passing vibration of a rolling element; a data processing unit that, using said signal, calculates a feature value indicating the ratio between the amplitude of a frequency indicating the passing vibration of the rolling element and the amplitude of a signal component of the Nth harmonic of a frequency indicating the passing vibration; and an anomaly determination unit that, on the basis of said feature value, determines whether or not the state of a measured object including the rolling element is abnormal.

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Inventors:

KIMURA SATOSHI (JP)

Application Number:

PCT/JP2021/045659

Publication Date:

June 23, 2022

Filing Date:

December 10, 2021

Export Citation:

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Assignee:

MITSUMI ELECTRIC CO LTD (JP)
KIMURA SATOSHI (JP)

International Classes:

F16C19/06; F16C19/52; F16C33/58; F16C41/00; G01H17/00; G01M99/00

Foreign References:

JP2020056801A	2020-04-09
US20200225117A1	2020-07-16
JPH11173956A	1999-07-02

Attorney, Agent or Firm:

ITOH, Tadashige et al. (JP)

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