US 11,913,991 B2
Rotating electric machine test method, rotating electric machine test device, and rotating electric machine
Norihiko Hana, Tokyo (JP); Masao Akiyoshi, Tokyo (JP); and Yoshihide Kikuichi, Tokyo (JP)
Assigned to MITSUBISHI ELECTRIC CORPORATION, Tokyo (JP)
Appl. No. 17/278,669
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Nov. 1, 2018, PCT No. PCT/JP2018/040697
§ 371(c)(1), (2) Date Mar. 23, 2021,
PCT Pub. No. WO2020/090082, PCT Pub. Date May 7, 2020.
Prior Publication US 2022/0034968 A1, Feb. 3, 2022
Int. Cl. G01N 3/00 (2006.01); G01R 31/34 (2020.01); G06T 7/00 (2017.01); H02K 1/22 (2006.01); G01L 1/24 (2006.01); G01M 5/00 (2006.01); G01B 5/30 (2006.01); G01B 11/16 (2006.01)
CPC G01R 31/343 (2013.01) [G01B 5/30 (2013.01); G01B 11/16 (2013.01); G01L 1/24 (2013.01); G01M 5/0033 (2013.01); G01N 3/00 (2013.01); G06T 7/001 (2013.01); H02K 1/22 (2013.01); G01N 2203/0062 (2013.01); G06T 2207/30164 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A rotating electric machine test method for testing a rotating electric machine including a rotor and a stator, the rotating electric machine test method comprising:
acquiring test image data by imaging a test target portion which is a part of the rotor by an imager:
generating, as strain change information, change in a strain distribution in the test target portion by digital image correlation based on the acquired test image data; and
determining a time during which operation of the rotating electric machine is able to continue, based on the strain change information.