System and method of electric motor fault detection
US9618582B2 · kind B2 · utility
2Cited by
9References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 30, 2014 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Oct 8, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/343
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for detecting faults in a motor includes a drive circuit, a detection circuit, and a controller. The drive circuit is configured to apply a drive signal to a motor. The detection circuit is configured to detect a response signal generated when the drive signal is applied to the motor. The controller is configured to determine a motor fault based on a comparison of the response signal to an expected signal for the drive signal applied to the motor. The drive signal is selected to generate a rotating magnetic field in the motor with a rotation-frequency greater than a maximum mechanical-response-frequency of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.