Unmanned aerial vehicle motor driving randomization and feedback for noise abatement
US9415870B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2015 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Sep 2, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64U2201/10
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
This disclosure is directed to monitoring a noise signature of an unmanned aerial vehicle (UAV) and varying the speed of the motors of the UAV to reduce unwanted sound (i.e., noise) of the UAV based on the noise signature. The noise signature of the UAV may be measured by an audio sensor of a vibration sensor, and feedback may be provided to the UAV. The UAV may generate noise during flight, which may include a number of noise components such as tonal noise (e.g., a whining noise such as a whistle of a kettle at full boil) and broadband noise (e.g., a complex mixture of sounds of different frequencies, such as the sound of ocean surf). By measuring the noise signature of the UAV, and varying the motor revolutions per minute (RPM) during flight operations, the UAV may reduce tonal components of the UAV noise signature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.