Apparatus and method for bearing condition monitoring
US8229682B2 · kind B2 · utility
74Cited by
15References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2009 |
| Grant date | Jul 24, 2012 |
| Priority date | — |
| Expiry date | Nov 6, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical motor bearing condition monitoring system includes an assembly that includes a shaft, a first bearing race coupled to the shaft, a plurality of bearing balls, and a second bearing race coupled to the first bearing race via the plurality of bearing balls. A portion of the assembly has a magnetic field encoded thereon. The monitoring system includes a magnetic field sensor positioned proximately to the magnetized assembly and configured to measure the magnetic field, and a processing unit configured to detect changes in the magnetic field via the magnetic field sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.