Title:
ABNORMALITY DIAGNOSIS DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/039661
Kind Code:
A1
Abstract:
An abnormality diagnosis device (5) is provided with: a classification storage unit (8) for storing the result of classifying a plurality of AC electric motors (2) into a plurality of electric motor groups, or of classifying a plurality of power transmission mechanisms of machinery into a plurality of power transmission mechanism groups; a signal input unit (7) for receiving an electrical signal (Smon) relating to the plurality of AC motors (2); a frequency analysis unit (9) for performing frequency analysis of the electrical signal (Smon); an assignment unit (10) for assigning a single frequency band component from among the output of the frequency analysis unit (9) to each of the plurality of electric motor groups; and a determination unit (11) for determining the presence/absence of an abnormality for each of the plurality of electric motor groups or the plurality of power transmission mechanism groups using the frequency band component assigned by the assignment unit (10). Through this configuration, an abnormality diagnosis device is provided that is capable of diagnosing, at low cost, an abnormality in an electric motor or a power transmission mechanism of machinery connected to an electric motor.
Inventors:
OHKUBO TAKUYA (JP)
KANEMARU MAKOTO (JP)
SANO SOTA (JP)
SATAKE AKIRA (JP)
KANEMARU MAKOTO (JP)
SANO SOTA (JP)
SATAKE AKIRA (JP)
Application Number:
PCT/JP2019/018486
Publication Date:
February 27, 2020
Filing Date:
May 09, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P5/46; G01R31/34
Domestic Patent References:
| WO2014156386A1 | 2014-10-02 | |||
| WO2018109993A1 | 2018-06-21 | |||
| WO2016151708A1 | 2016-09-29 |
Foreign References:
| JP2013003004A | 2013-01-07 | |||
| JP2008116408A | 2008-05-22 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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