Vibration Transmission Analysis Based on Higher Order Spectrum

Vibration transmission relationship is expressed by frequency response function,due to non-Gauss feature of signal,traditional PSD methods are limited.In this paper,mechanical vibration transmission relationship is researched based on higher order spectrum analysis by using the nature that higher order spectrum can restrain the additive gauss noise,and put forward frequency response function based on 1(1/2) dimension spectrum.It's clear that the effect of vibration transmission relationship based on 1(1/2) dimension spectrum is better than power spectrum by analyzing and comparing,and the results could be taken into consideration in vehicle structural design.