燃料电池轿车车内噪声传递路径分析研究

介绍了传递路径分析(TPA)方法,对结构传递和空气传播噪声理论分析和试验方法进行探讨,通过燃料电池轿车怠速工况车内噪声的传递路径试验,测量并计算得到传递函数,结合实际激励进行车内噪声合成,合成结果和原始声音比较接近,结构传递噪声是主要成分,最后通过路径贡献分析识别出主要传递路径。

A Study on the Transfer Path of the Interior Noise of a Fuel Cell Car

Based on transfer path analysis(TPA) technique presented,the theoretical analysis and test method for the transmission of structure-borne noise and airborne noise are investigated.Then a transfer path test for the interior noise of a fuel cell car(FCC) at idling condition is carried out,and the transfer functions are measured,with which and combined with actual excitation data,a synthesis of interior noise is conducted.The results show that the synthesized noise is very close to the original one and that the structure-borne noise is the main contribution of the interior noise of the FCC.Finally,the main transfer paths of noise are identified by using path contribution analysis.