US 12,215,740 B2
System for determining at least one defect of a bearing and associated method
Franck Landrieve, Fondettes (FR)
Assigned to Aktiebolaget SKF, Gothenburg (SE)
Filed by Aktiebolaget SKF, Gothenburg (SE)
Filed on Oct. 4, 2022, as Appl. No. 17/959,885.
Claims priority of application No. 102021211491.1 (DE), filed on Oct. 12, 2021.
Prior Publication US 2023/0113380 A1, Apr. 13, 2023
Int. Cl. F16C 19/52 (2006.01); F16C 41/00 (2006.01); G01M 13/04 (2019.01); G01M 13/045 (2019.01)
CPC F16C 19/52 (2013.01) [F16C 41/00 (2013.01); G01M 13/04 (2013.01); G01M 13/045 (2013.01); F16C 2233/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for determining at least one defect of a bearing without using an accelerometer, the method comprising:
providing a first ring and a second ring capable of rotating concentrically relative to one another,
measuring first and second differential distances between the first ring and the second ring without using any accelerometers when the first ring is rotating relative to the second ring at different relative angular positions of the first and second rings during a predefined duration,
storing each measured differential distance according to the relative angular position of the first and second rings and a value of a temporal variable indicative of the evolution of the predefined duration,
determining a first temporal profile of a radial relative displacement between the first and second rings, and a second temporal profile of an axial relative displacement between the first and second rings according to the stored measured differential distances, and
identifying a defect of the bearing from the temporal profiles such that the defect is detected without the use of any accelerometers.