Research on Vehicle Ride Comfort Based on Wavelet Transformation

Based on the international standard ISO2631 and national standard GB /T4970Method of running test-automotive ride comfort,the ride comfort tests are conducted on a car and the triaxial vibration acceleration values of the car seat are collected. Time domain,frequency domain and wavelet transform algorithm which can calculate the weighted root-mean-square acceleration are implemented with the Matlab software development platforms. Wavelet transform algorithm is key research. The results show that the outcomes of calculation with different algorithms don't have significant differences,time domain method is more sample; frequency domain method is suitable for 1 /3 octave analysis of the impact of human vibration; wavelet transform method results closers to the time domain,and because of the frequency characteristics of local analysis,it can be better used in the vehicle ride comfort.