Accelerated Editing of Automotive Component Load Spectrum Based on S-transform Dual Threshold Method
Based on S-transform a dual threshold editing method was proposed to address the is-sues of poor acceleration of editing performance in S-transform editing.Firstly,this method per-formed an S-transform on the load spectrum to obtain the maximum amplitude spectrum.Then the method retained the corresponding load spectrum segments based on the amplitude spectrum segments which were recognized and retained by the dual threshold method to assemble the accelerated load spectrum.Finally,the statistical parameters,power spectral density,breakdown count,and fatigue simulation results of the acceleration spectra edited by the S-transform dual threshold editing method and the S-transform editing method were compared and analyzed.The results indicate that the S-trans-form dual threshold editing method may significantly compress the original load time,and the com-pression efficiency is higher than that of S-transform editing method.The fatigue damage and life analysis errors of the steering joint are smaller,which verifies the proposed method is suitable for ac-celerated editing research of automotive component load spectra.
S transformationmaximum amplitude spectrumdual thresholdfatigue calcula-tionload spectrum acceleration editing
万方数据
维普
