The Use of Experimental Transfer Path Analysis in a Road Vehicle Prototype Having Independent Sources

Medeiros, Eduardo Bauzer; Guimarães, Gustavo Paulinelli

doi:10.4271/2008-36-0555

Cited by 3 publications

(1 citation statement)

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“…Identifying the noise sources accurately is one of the most important steps in the reduction of the noise. Different identification methods, such as the elimination method 1 , acoustic holography method [2][3][4] , and transfer path analysis (TPA) Method 5,6 have been used in the past.…”

Section: Introductionmentioning

confidence: 99%

Time-domain transfer path analysis of multiple moving noise sources

Zheng¹,

Peng²,

Lian³

et al. 2011

Noise Control Eng. J.

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Identifying the contribution of different noise sources is a major step in reducing the impact of moving noise sources. Compared with classic transfer path analysis, operational transfer path analysis could improve efficiency of the identification process.To analyze the transient characteristics and their contribution of multiple moving noise sources, a method of time-domain transfer path analysis (TPA) is proposed. The dynamic transfer path model and transfer matrix calculation method are introduced. Simulation with three point sources is used to compare the identification results of the time-domain TPA and frequency-domain TPA. The application of the time-domain TPA to the identification of the pass-by noise source of a heavy duty truck is illustrated. The simulation and the application results show that time-domain TPA could be used to analyze the contribution of moving noise sources, and it takes less computational effort compared with frequency-domain TPA V C 2011 Institute of Noise Control Engineering.

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Section: Introductionmentioning

confidence: 99%

Time-domain transfer path analysis of multiple moving noise sources

Zheng¹,

Peng²,

Lian³

et al. 2011

Noise Control Eng. J.

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Transfer path analysis of powertrain vibration on driver's noise

Wang

Chen

et al. 2011

2011 Seventh International Conference on Natural Computation

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On the basis of Transfer Path Analysis (TPA) method, the driver's noise which was caused by powertrain excitation was taking under the problematic condition. The method and procedure of TPA were studied using LMS/TPA software. The dominant transfer path which has influence on the driver's noise was identified. The results show that the rear mount excitation of the powertrain influences the driver side noise most. In order to ameliorate ride comfort, the isolation performances of the rear powertrain mount needs to be improved. The amplitude of every transfer path's partial contribution is identified and the phase relation among each contribution's amplitude is found. This paper provides a base for the design of powertrain mounts.

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