US 11,885,708 B2
Method for determining a remaining useful life of a bearing
Matthias Erlwein, Eggolsheim OT Weigelshofen (DE); Vincent Malik, Munich (DE); and Christian Andreas Wolf Pozzo, Zirndorf (DE)
Assigned to SIEMENS AKTIENGESELLSCHAFT, Munich (DE)
Appl. No. 17/794,953
Filed by SIEMENS AKTIENGESELLSCHAFT, Munich (DE)
PCT Filed Nov. 27, 2020, PCT No. PCT/EP2020/083581
§ 371(c)(1), (2) Date Jul. 22, 2022,
PCT Pub. No. WO2021/148170, PCT Pub. Date Jul. 29, 2021.
Claims priority of application No. 20153396 (EP), filed on Jan. 23, 2020.
Prior Publication US 2023/0112604 A1, Apr. 13, 2023
Int. Cl. G01M 13/045 (2019.01)
CPC G01M 13/045 (2013.01) 12 Claims
OG exemplary drawing
 
1. A method for determining a remaining useful life of a bearing having a surface defect, the method comprising:
determining a defect size of the surface defect based on sampled oscillations of the bearing, wherein determining the defect size of the surface defect comprises determining the defect size of the surface defect based on associating, using a trained machine learning model, the sampled oscillations of the bearing with the defect size of the surface defect;
determining, based on the defect size, at least one of principal stresses or a contact force of the bearing caused by the surface defect, wherein the determining of the at least one of the principal stresses or the contact force is based on a substitute model of the bearing, wherein the defect size of the surface defect is an input of the substitute model, and wherein the substitute model associates the defect size with a principal stress of the at least one of the principal stresses or the contact force; and
determining the remaining useful life of the bearing based on at least one of the principal stresses, the contact force, or the at least one of the principal stresses and the contact force.