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Noise Source Localization in an Aircraft Cabin

  • Thomas KletschkowskiEmail author
Part of the Intelligent Systems, Control and Automation: Science and Engineering book series (ISCA, volume 56)

Abstract

Noise field analysis is usually the first design task of an ANC-system design process whose procedure has been discussed in Chap.  8. Such an analysis may also include noise source identification in order to develop an ANC concept that is capable of shielding the interior effectively against exterior noise. For this purpose it is essential to determine both positions and source strengths of the primary noise sources. These information are required for an appropriate placement and control of actuators and sensors. A powerful ANC-system design tool that can be used for noise source identification is the IFEM. This tool was described in Sect.  7.2. The upcoming chapter reports on investigations in which the IFEM has been applied to identify acoustic hot spots in a cross-section of a long-range airliner. The sound field in this cavity that represents the basic system was excited by internal as well as by external sources and mapped with a custom-built microphone array. A matching finite element model was developed. As it will be shown in the following chapter, the acoustic variables were calculated from the measured data with success.

Keywords

Noise Source Sound Field Microphone Array Inverse Calculation Longitudinal Acoustic Mode 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Sachau D, Drenckhan J, Kletschkowski T, Petersen S (2005b) Entwicklung von Messtechniken zur Lärmquellenidentifizierung in Kabinen. Final Report, Hamburg Aircraft Research Program (Lufo Hamburg 1), TUT-34, Helmut-Schmidt-University/University of the Federal Armed Forces Hamburg Google Scholar
  2. Simanowski K, Kletschkowski T, Sachau D, Samtleben B (2009) Acoustic ground tests in a cross-section of a long-range airliner for validation of the inverse finite element method. In: Proc of NAG/DAGA 2009, int conf on acoustics, including the 35th German annual conference on acoustics (DAGA), Rotterdam, Mart 23–26 Google Scholar
  3. Weber M (2009) Inverse Schallquellenortung in Flugzeugkabinen. Dissertation, Helmut-Schmidt-University/University of the Federal Armed Forces Hamburg Google Scholar

Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.Department of Mechanical Engineering, MechatronicsHelmut-Schmidt-University/University of the Federal Armed Forces HamburgHamburgGermany

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