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Reduction of broadband noise in vehicles by means of active feedforward control

Misol, Malte and Haase, Thomas and Monner, Hans Peter (2015) Reduction of broadband noise in vehicles by means of active feedforward control. In: 44th Inter-Noise Congress & Exposition on Noise Control Engineering. The Institute of Noise Control Engineering of the USA, Inc., Washington, DC.. Internoise, 09.−12. Aug. 2015, San Francisco, Kalifornien, USA.

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Abstract

Broadband noise in a vehicle’s interior is an important issue because of its negative impact on the passengersʼ comfort and wellbeing. The perception of this broadband noise can increase due to the use of new, less noisy drive concepts and the accompanying loss of masking noise compo-nents. This contribution focuses on the reduction of the transmission of external broadband distur-bances through lightweight panel structures (e.g. a car’s roof liner or an aircraft sidewall panel) by means of active feedforward control. The aim of this work is to demonstrate the potential and to motivate the implementation of active feedforward (instead of feedback) control for the reduction of broadband noise in vehicles. A new method is introduced to quantify the causality of an active feedforward control system configuration. Simulation results show a similar causality of active single and double panel systems, yet a significantly increased control performance of more than 10 dB in the reduction of the sum of the mean-squared error signals of the active double panel system. The main conclusion of this work is that the transmission of external broadband disturbance sources through double-walled vehicle or aircraft structures can be significantly reduced by the application of active feedforward control.

Item URL in elib:https://elib.dlr.de/98006/
Document Type:Conference or Workshop Item (Speech)
Title:Reduction of broadband noise in vehicles by means of active feedforward control
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Misol, Maltemalte.misol (at) dlr.deUNSPECIFIED
Haase, ThomasUNSPECIFIEDUNSPECIFIED
Monner, Hans PeterUNSPECIFIEDUNSPECIFIED
Date:August 2015
Journal or Publication Title:44th Inter-Noise Congress & Exposition on Noise Control Engineering
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Publisher:The Institute of Noise Control Engineering of the USA, Inc., Washington, DC.
Status:Published
Keywords:active control, feedforward control, interior noise, vehicle, panel, AVC, ASAC
Event Title:Internoise
Event Location:San Francisco, Kalifornien, USA
Event Type:international Conference
Event Dates:09.−12. Aug. 2015
Organizer:INCE-USA, KSNVE
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 - Structures and Materials, L - Systems and Cabin, V - NGC Fahrzeugkonzepte (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Adaptronics
Deposited By: Misol, Dr. Malte
Deposited On:21 Sep 2015 12:21
Last Modified:31 Jul 2019 19:54

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