Load Effect on Source Impedance Measurement Accuracy

2009-01-2041

05/19/2009

Event
SAE 2009 Noise and Vibration Conference and Exhibition
Authors Abstract
Content
The source in an intake/exhaust system is commonly modeled as a source strength and impedance combination. Both the strength and impedance are normally measured and measurement accuracy depends on selecting an appropriate acoustic load combination. An incident wave decomposition method is proposed which is based on acoustic wave decomposition concepts instead of an electric circuit analogy providing a more straightforward approach to investigating the effect of acoustic load selection. Based on studying wave reflections in the system, the uncertainty for determining source impedance is estimated.
Meta TagsDetails
DOI
https://doi.org/10.4271/2009-01-2041
Pages
5
Citation
Liu, J., and Herrin, D., "Load Effect on Source Impedance Measurement Accuracy," SAE Technical Paper 2009-01-2041, 2009, https://doi.org/10.4271/2009-01-2041.
Additional Details
Publisher
Published
May 19, 2009
Product Code
2009-01-2041
Content Type
Technical Paper
Language
English