Abstract
The traditional distributed drive electric vehicle brings about many problems, such as the largeunsprnug mass and the deterioration of ride comfort and drive safety. This paper applies the dynamic absorber dynamic theory to suppress these negative effects. Seven close-to-wheel electric drive systems which not only transmit power butalso absorb vehicle vertical vibration are designed and analyzed. Vibration equation and MATLAB model are establishedto optimize structural parameters and reduce vehicle vertical acceleration and relativedynamic tire load. Results show that applying dynamic vibrationabsorber theorysuccessfullysuppresses the negativeeffects of largeunsprung mass in distributed closeto-wheel system and even promotes vehicle ride comfort.
Keywords: close-to-wheel drive system, dynamic vibration absorber, mechanism synthesis, parameter optimization, ride comfort