Active noise control system in an aircraft and method to reduce the noise in the aircraft
US10176794B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2018 |
| Grant date | Jan 8, 2019 |
| Priority date | — |
| Expiry date | Mar 21, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/501
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An active noise control system for reducing the sound pressure level in one or more head areas of one or more seats in the interior of an aircraft fuselage includes multiple accelerometers mounted outside of the aircraft fuselage at or near the mounts of the aircraft's propulsion system. One or more loudspeakers are mounted at the seat and are responsible for the reduction of noise at its head area. The accelerometers continuously measure multiple reference signals during operation of the aircraft and report to a controller that continuously calculates the reported noise signals in the head areas based on the measured reference signals and its counter signals, which equal the amplitude but having opposite phase of the calculated arriving noise signals in each head area. The controller operates one or more actuator systems for continuously generating the counter signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.