Title:
ABNORMALITY DETERMINATION DEVICE, ABNORMALITY DETERMINATION METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2022/030516
Kind Code:
A1
Abstract:
Provided is a technology capable of more appropriately determining an abnormality in a mechanical element of a rotating machine. A control device 40 according to one embodiment of the present disclosure includes an abnormality determination unit 403 which determines an abnormality in a mechanical element of a compressor 10 electrically driven by an electric motor 20, on the basis of an electric feature amount of the compressor 10. The electrical feature amount is a specific frequency component of a signal indicating a physical quantity which correlates with the current of the electric motor 20 which drives the compressor 10. The specific frequency component is a component of a predetermined positive integer multiple of the rotation frequency of the compressor 10. The abnormality determination unit 403 determines an abnormality in the mechanical element of the compressor 10, in consideration of a change in the relationship between the abnormality in the mechanical element and the electrical feature amount of the compressor 10 (electric motor 20) due to a change in the rotation frequency of the compressor 10.
Inventors:
KOBORI HIROKAZU (JP)
ARAKI TAKESHI (JP)
IWAIDA YUMEMI (JP)
IKEBE HIROKI (JP)
ARAKI TAKESHI (JP)
IWAIDA YUMEMI (JP)
IKEBE HIROKI (JP)
Application Number:
PCT/JP2021/028861
Publication Date:
February 10, 2022
Filing Date:
August 03, 2021
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
G01M99/00; H02P29/024
Foreign References:
| JP2000298511A | 2000-10-24 | |||
| JP2015227889A | 2015-12-17 | |||
| JP2016090546A | 2016-05-23 | |||
| JPS598518B2 | 1984-02-24 | |||
| JP5494760B2 | 2014-05-21 | |||
| JP2020131881A | 2020-08-31 |
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
Download PDF: