Title:
FAILURE PREDICTION SYSTEM, FAILURE PREDICTION METHOD, AND FAILURE PREDICTION PROGRAM
Document Type and Number:
WIPO Patent Application WO/2023/008082
Kind Code:
A1
Abstract:
In the present invention, an acquisition unit acquires traveling data of an electric mobile body. A prediction unit predicts an aging failure of an electric machine conversion unit including a motor for driving a drive wheel of the electric mobile body and a drive circuit thereof, on the basis of the traveling data of the electric mobile body. The traveling data includes an input voltage of the drive circuit, input current of the drive circuit, the rotation speed of the motor driven by the drive circuit, and the rotation torque of the motor. The prediction unit predicts an aging failure of the electric machine conversion unit on the basis of transition of a value statistically indicating a relationship between input power of the drive circuit based on the input voltage and the input current of the drive circuit and a shaft output of the motor based on the rotation speed and the rotation torque of the motor.
Inventors:
KURANUKI MASAAKI
Application Number:
PCT/JP2022/026185
Publication Date:
February 02, 2023
Filing Date:
June 30, 2022
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H02M7/48; B60L3/00; G01M99/00; G16Y10/40; G16Y20/20; G16Y40/20
Foreign References:
| JP2020141465A | 2020-09-03 | |||
| JP2021090340A | 2021-06-10 | |||
| JP2021072654A | 2021-05-06 | |||
| JP2017070105A | 2017-04-06 | |||
| JP2019037024A | 2019-03-07 |
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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