Load effect on source impedance measurement accuracy

J. Liu; D. W. Herrin

doi:10.4271/2009-01-2041

Load effect on source impedance measurement accuracy

J. Liu, D. W. Herrin

Mechanical Engineering

Research output: Contribution to journal › Conference article › peer-review

5 Scopus citations

Abstract

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.

Original language	English
Journal	SAE Technical Papers
DOIs	https://doi.org/10.4271/2009-01-2041
State	Published - 2009
Event	SAE 2009 Noise and Vibration Conference and Exhibition, NVC 2009 - St. Charles, IL, United States Duration: May 19 2009 → May 19 2009

ASJC Scopus subject areas

Automotive Engineering
Safety, Risk, Reliability and Quality
Pollution
Industrial and Manufacturing Engineering

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10.4271/2009-01-2041

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title = "Load effect on source impedance measurement accuracy",

abstract = "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.",

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AU - Herrin, D. W.

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AB - 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.

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U2 - 10.4271/2009-01-2041

DO - 10.4271/2009-01-2041

M3 - Conference article

AN - SCOPUS:85072473796

Y2 - 19 May 2009 through 19 May 2009

ER -

Load effect on source impedance measurement accuracy

Abstract

ASJC Scopus subject areas

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