车内噪声时域传递路径分析

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (17) : 161-166.

论文

车内噪声时域传递路径分析

褚志刚1,2，熊敏2，杨洋3，贺岩松2

作者信息 +

Time-domain Transfer Path Analysis of Automobile Interior Noise

CHU Zhi-gang1,2 XIONG Min2 YANG Yang3 HE Yan-song2

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文章历史 +

摘要

与传统的频域传递路径分析相比，时域传递路径分析能够对噪声及其各路径贡献进行回放试听及进一步的声品质分析，能更直观、全面的理解和掌握噪声及其路径贡献特性。本文基于结构声的阻抗矩阵传递路径分析方法和空气声的替代源传递路径分析方法，给出了一种综合考虑结构声和空气声的车内噪声时域传递路径分析方法，并阐明了其实现流程。在此基础上，建立了某汽车发动机对车内副驾驶位置噪声的时域传递路径分析模型，分析了发动机悬置结构声传递路径和表面辐射空气声传递路径贡献。结果表明：在整个升降速过程中，该发动机的结构声对车内目标点的贡献显著大于空气声，右上悬置和左上悬置是其主要传递路径，且路径频率响应函数高是造成贡献量大的根本原因。为后续的噪声控制方案的制定指明了方向。

Abstract

Compared with the traditional transfer path analysis(TPA) in the frequency domain, time-domain TPA can playback the noises and their path contributions and further analyze their sound quality so that it can make us comprehend and grasp the noises and their path contributions more intuitively and comprehensively. Based on the structure-borne impedance matrix method and the airborne source substitution method, this article presents a time-domain TPA method to analyze the automobile interior noise including structure-borne and airborne, and illustrates its implementation process in detail. On this basis, a time-domain TPA model is built to analyze the copilot position noise caused by the engine. The results show that the contribution of structure-borne is significantly greater than the contribution of airborne during the whole run-up and run-down process, the right upper mount and the left upper mount are the main contribution paths and their high path FRFs are the root causes of the great contributions. The results point out the direction for the establishment of subsequent noise control scheme.

导出引用

褚志刚1,2，熊敏2，杨洋3，贺岩松2. 车内噪声时域传递路径分析[J]. 振动与冲击, 2015, 34(17): 161-166

CHU Zhi-gang1,2 XIONG Min2 YANG Yang3 HE Yan-song2. Time-domain Transfer Path Analysis of Automobile Interior Noise[J]. Journal of Vibration and Shock, 2015, 34(17): 161-166

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