Motor deflection monitoring for unmanned aerial vehicles
US9828095B1 · kind B1 · utility
14Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2015 |
| Grant date | Nov 28, 2017 |
| Priority date | — |
| Expiry date | Dec 25, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64U2201/10
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Deflection of a rotor of a motor, such as a brushless motor, of an unmanned aerial vehicle (“UAV”) during operation may cause the magnets coupled to the interior surface of the rotor to move or walk down the surface, imbalancing the motor and potentially creating an unsafe flying condition for the UAV. The described methods and apparatus monitor rotor deflection of the motor during operation and alter one or more flight characteristics of the UAV if the deflection exceeds a tolerance range. By altering flight characteristics, external forces acting on the motor may be reduced, thereby reducing the deflection of the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.