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A PU Probe Array Based Panel Noise Contribution Analysis Whilst Driving
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 19, 2009 by SAE International in United States
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This paper presents new developments on hot wire anemometer based panel noise contribution analysis. The used sensor allows the direct measurement of particle velocity. Some historical remarks are given and the latest developments of the technique are reported.
Four steps are required to determine the panel noise contribution of the interior of a vehicle and to visualize the results in 3D.
In a first step the probes are positioned on the interior surfaces and their x, y, z coordinates are measured. Based on these data a 3D geometry model is created. The geometry data are acquired using a specially designed 3D digitizer.
The second step is a measurement in a certain mode of operation. This step can be done in a laboratory but it is also possible to perform the measurement whilst driving the vehicle on the road. Stationary as well as non stationary running conditions like e.g. run ups are accessible and do not limit the applicability of the method.
The third step is the determination of the transfer paths from the panels to a certain listening position. This measurement is done reciprocally.
In a fourth and last step the transfer paths are linked with the operational data gathered in step two. The results are then visualized using the 3D geometry model.
This paper describes the measurement of a conventional car with a resolution of 180 panels. Since an array of 45 probes was used step 2 and step 3 had to be repeated 4 times.
The complete measurement typically takes approximately 3 days.
CitationWolff, O., Tijs, E., and de Bree, H., "A PU Probe Array Based Panel Noise Contribution Analysis Whilst Driving," SAE Technical Paper 2009-01-2123, 2009, https://doi.org/10.4271/2009-01-2123.
- Fahy F.J. Some applications of the reciprocity principle in experimental vibroacoustics, ISVR 2002
- Fahy F.J. the reciprocity principle and applications in vibro acoustics, proceedings institute of acoustics 1990
- Fahy F.J. the vibro-acoustic reciprocity principle and applications to noise control, Acustica 81 1995
- Verheij J.W. Experimental procedures for quantifying sound paths to the interior of road vehicles, 2nd international conference on vehicle comfort, part 1 Bologna 1992 483 491
- Verheij Jan. W. Inverse and reciprocity methods for machinery noise source characterization and sound path quantification, part 1: sources and part 2: transmission paths IJAV 1997
- Wolff O. Sottek R. Binaural Panel Noise Contribution Analysis An Alternative to the Conventional Window Method, DAGA 2004
- Wolff Oliver Sottek Roland Panel Contribution Analysis-An Alternative Window Method, SAE 2005
- Rondeau Jean-Francois et al. Vehicle Acoustic Synthesis Method: improving acquisition time by using p-u probes, SAE 2005
- Duval A. et al Vehicle Acoustic Synthesis Method 2nd Generation: New Developments with p-u Probes Allowing to Simulate Unsteady Operative Conditions Like Run-Ups SAE 2007
- Wolff Oliver Fast panel noise contribution analysis using large PU sensor arrays, Internoise 2007
- Jacobsen F. de Bree H.E A Comparison of two different sound intensity measurement principles, JASA 2005
- de Bree H.E. Basten Tom Microflown based monopole sound sources for reciprocal measurements, SAE 2008