Details
| Originalsprache | Englisch |
|---|---|
| Titel des Sammelwerks | Variational Analysis and Aerospace Engineering |
| Herausgeber (Verlag) | Springer International Publishing AG |
| Seiten | 229-241 |
| Seitenumfang | 13 |
| ISBN (elektronisch) | 978-0-387-95857-6 |
| ISBN (Print) | 978-0-387-95856-9 |
| Publikationsstatus | Veröffentlicht - 15 Juni 2009 |
Publikationsreihe
| Name | Springer Optimization and Its Applications |
|---|---|
| Band | 33 |
| ISSN (Print) | 1931-6828 |
| ISSN (elektronisch) | 1931-6836 |
Abstract
During the past two decades, reducing exposure to high-level noise in aircraft cockpits by methods of active noise control (ANC) has aroused the interest of researchers. Also, some commercial applications were initiated by leading manufacturers. For this purpose, fundamentally different approaches were used. While active noise compensation reduces the noise level by generating an interfering antinoise, structural vibration control aims to limit sound emittance through active damping of the aircraft structure vibrations. These approaches are linked with very different financial and technical boundary conditions, which implied distinct degrees of success. The ANC approaches used in cockpit noise reduction will be summarised, and their success or failure reasons will be analysed. Thereafter, the focus will be set on the industrially more successful way of protecting pilots from high noise levels, which is the use of active headsets. The development and the current state of commercial products will be presented, and the requirements of future trends will be derived. These requirements consist in extending the band width of noise reduction and making the control adaptive to changing conditions. Finally, the development of a prototype of a new generation of ANC headsets is presented. The prototype combines standard feedback with adaptive feedforward control techniques and processes the control algorithms by an integrated DSP platform.
ASJC Scopus Sachgebiete
- Mathematik (insg.)
- Steuerung und Optimierung
Zitieren
- Standard
- Harvard
- Apa
- Vancouver
- BibTex
- RIS
Variational Analysis and Aerospace Engineering. Springer International Publishing AG, 2009. S. 229-241 (Springer Optimization and Its Applications; Band 33).
Publikation: Beitrag in Buch/Bericht/Sammelwerk/Konferenzband › Beitrag in Buch/Sammelwerk › Forschung › Peer-Review
}
TY - CHAP
T1 - Concepts of active noise aircraft cockpits reduction employed in high noise level
AU - Foudhaili, Hatem
AU - Reithmeier, Eduard
PY - 2009/6/15
Y1 - 2009/6/15
N2 - During the past two decades, reducing exposure to high-level noise in aircraft cockpits by methods of active noise control (ANC) has aroused the interest of researchers. Also, some commercial applications were initiated by leading manufacturers. For this purpose, fundamentally different approaches were used. While active noise compensation reduces the noise level by generating an interfering antinoise, structural vibration control aims to limit sound emittance through active damping of the aircraft structure vibrations. These approaches are linked with very different financial and technical boundary conditions, which implied distinct degrees of success. The ANC approaches used in cockpit noise reduction will be summarised, and their success or failure reasons will be analysed. Thereafter, the focus will be set on the industrially more successful way of protecting pilots from high noise levels, which is the use of active headsets. The development and the current state of commercial products will be presented, and the requirements of future trends will be derived. These requirements consist in extending the band width of noise reduction and making the control adaptive to changing conditions. Finally, the development of a prototype of a new generation of ANC headsets is presented. The prototype combines standard feedback with adaptive feedforward control techniques and processes the control algorithms by an integrated DSP platform.
AB - During the past two decades, reducing exposure to high-level noise in aircraft cockpits by methods of active noise control (ANC) has aroused the interest of researchers. Also, some commercial applications were initiated by leading manufacturers. For this purpose, fundamentally different approaches were used. While active noise compensation reduces the noise level by generating an interfering antinoise, structural vibration control aims to limit sound emittance through active damping of the aircraft structure vibrations. These approaches are linked with very different financial and technical boundary conditions, which implied distinct degrees of success. The ANC approaches used in cockpit noise reduction will be summarised, and their success or failure reasons will be analysed. Thereafter, the focus will be set on the industrially more successful way of protecting pilots from high noise levels, which is the use of active headsets. The development and the current state of commercial products will be presented, and the requirements of future trends will be derived. These requirements consist in extending the band width of noise reduction and making the control adaptive to changing conditions. Finally, the development of a prototype of a new generation of ANC headsets is presented. The prototype combines standard feedback with adaptive feedforward control techniques and processes the control algorithms by an integrated DSP platform.
UR - http://www.scopus.com/inward/record.url?scp=84976435993&partnerID=8YFLogxK
U2 - 10.1007/978-0-387-95857-6_13
DO - 10.1007/978-0-387-95857-6_13
M3 - Contribution to book/anthology
AN - SCOPUS:84976435993
SN - 978-0-387-95856-9
T3 - Springer Optimization and Its Applications
SP - 229
EP - 241
BT - Variational Analysis and Aerospace Engineering
PB - Springer International Publishing AG
ER -