Characteristics of Dynamic Response of Suspension Hydraulic Motor - Regenerative Shock Absorber (HMRSA)

Abstract

Translational motion that happens in the vehicle's suspension due to  unevenness  of  the road  surface  can  be  used  as  a  source  of electrical  energy.  A  suspension  that  can  convert  translational motion  into  electrical  energy  is  known  as  regenerative  type suspension. To know the characteristics of the dynamic response, such  as  electrical  energy  potential  and  driving  coziness  which resulted  by  a  suspension  system,  we  need  to  examine the suspension. In this study, a test will be conducted to a suspension system that  has been  designed  by researchers  and  was  named Hydraulic Motor - Regenerative Shock Absorber (HMRSA). The test will be conducted statically and dynamically. The goal of the static  testing  is  to  obtain  the  spring’s  constant  value  and  the damping’s  constant  value  of  HMRSA.  In  the  dynamic  testing, excitation was given in the form of periodic and impulse. Periodic excitations are  varied between these several frequencies such as 1.4Hz,  1.75  Hz  and  2  Hz.  Instead  of  variant  of  frequencies, electrical  resistivity  loads  are  varies  in  periodic  excitations  with each  resistive  loads  such  as  6  ohm,  12  ohm  and  18  ohm.  From dynamic testing, the  electricity power  values and sprung’s  mass acceleration  which  resulted  by  HMRSA  suspension  system  on each  frequency and  electrical resistivity will  be  obtained.  The sprung’s mass acceleration value will be fundamental on how to analyze  driving  coziness  that  produced  by  HMRSA  suspension system.