elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

On the noise reduction of active sidewall aircraft panels using feedforward control with embedded systems

Misol, Malte and Algermissen, Stephan and Rose, Michael (2018) On the noise reduction of active sidewall aircraft panels using feedforward control with embedded systems. In: Proceedings of ISMA2018 - International Conference on Noise and Vibration Engineering including USD2018, pp. 55-62. Katholieke Universiteit Leuven. International Conference on Noise and Vibration Engineering 2018, 17.-17. Sep. 2018, Leuven, Belgien.

[img] PDF
1MB

Official URL: http://past.isma-isaac.be/downloads/isma2018/proceedings/Contribution_559_proceeding_3.pdf

Abstract

Keeping aircraft interior noise on an acceptable level is an important aspect for the passenger comfort and health in modern aircraft design. Generally there is a trade-off in the achievable transmission loss of aircraft and the additional weight of the insulation provision, especially at low frequencies below 500 Hz. In this frequency range, passive methods for sound insulation usually have high weight and volume requirements for suitable performance in aircraft. The present work focuses on aircraft with rotor engines having characteristic low frequency narrow banded noise sources due to the rotational speed of the rotors. A major transmission path of the noise is given by the linings of the aircraft cabin, which are coupled to the fuselage. These large sound emmitting surfaces radiate the noise directly into the passenger zone. Active control is a promising method to reduce at least the low-frequency noise radiated by the panels. These so-called smart linings, augmented with suitable actuators and sensors, are also usable for additional tasks, such as e.g. passenger announcements and noise masking. The feasibility of active feedforward control to reduce narrow banded frequencies below 500 Hz has already been tested successfully at DLR on test panels and in a fully equipped test aircraft on ground, which are excited externally by a loudspeaker array. This paper is dedicated to a discussion of the recent activities to simplify the underlying control strategies in a way that they can be implemented on small embedded systems with limited performance. In the future, such microprocessor units enable the integration of the actuators, sensors and control algorithms directly into smart lining modules, having a positive effect on maintainability and weight footprint of the smart Panels.

Item URL in elib:https://elib.dlr.de/133937/
Document Type:Conference or Workshop Item (Speech)
Title:On the noise reduction of active sidewall aircraft panels using feedforward control with embedded systems
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Misol, MalteMalte.Misol (at) dlr.dehttps://orcid.org/0000-0001-8056-1569
Algermissen, StephanStephan.Algermissen (at) dlr.dehttps://orcid.org/0000-0002-0507-8195
Rose, MichaelMichael.Rose (at) dlr.dehttps://orcid.org/0000-0002-8311-3638
Date:17 September 2018
Journal or Publication Title:Proceedings of ISMA2018 - International Conference on Noise and Vibration Engineering including USD2018
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 55-62
Publisher:Katholieke Universiteit Leuven
Series Name:Proceedings of ISMA 2018 and USD 2018
Status:Published
Keywords:aircraft, interior noise, active control, lining, sidewall panel
Event Title:International Conference on Noise and Vibration Engineering 2018
Event Location:Leuven, Belgien
Event Type:international Conference
Event Dates:17.-17. Sep. 2018
Organizer:Department of Mechanical Engineering, Katholieke Universiteit Leuven
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems and Cabin
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Adaptronics
Deposited By: Rose, Dr.rer.nat. Michael
Deposited On:05 Feb 2020 14:37
Last Modified:05 Feb 2020 14:37

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.