PSD identification for the mining trucks with HPS based on the IFFT and wavelet analysis
会议名称：《2023智能制造与机械动力学学术大会》
会议日期：2023年
学科分类：081901[工学-采矿工程] 0819[工学-矿业工程] 08[工学]
关 键 词：HPS road spectrum wavelet analysis IFFT vehicle dynamic
摘 要：Because the vehicle dynamic model with the hydro-pneumatic suspension(HPS) is a strongly nonlinear system,the traditional random vibration theory cannot be used for obtaining the pavement *** this paper,therefore,the responses in the time domain are obtained by using the inverse fast Fourier transformation(IFFT) which can generate the time domain model of the unevenness road for the nonlinear vehicle ***,the wavelet analysis is used for processing the experimental data according to the excitation ***,the corrected unevenness index(expressing the PSD) in the test site can be obtained by matching the simulation and experimental *** research provides an approach for correcting the road PSD in test site according to the responses from the vibration test,particularly with the strong nonlinear suspension.