Attia E.M.,Alex University Alex |
Mohamed M.F.,Alex University Alex |
Maharem N.A.,Alex University
International Review of Mechanical Engineering | Year: 2013
Ride with comfort is the most important demand in vehicle industry as it affects directly seats mounting. For that reasons a lot of effort has been made to improve ride comfort by isolating vehicle from road irregularities as possible. That can be done by improving vehicle suspension ability to dampen the vibration induced from road irregularities during vehicle maneuver before it reaches the vehicle body. This work investigates the effect of active damping on vehicle vibrations by presenting mathematical model of full active vehicle suspensions. That model introduced a new active damper tested recently and proved to be efficient. These dampers depend on two kinds of fluids, Electro-Rheological fluid (ER) and Magneto- Rheological fluid (MR), both of them give high damping with a little power cost. Mathematical model is derived for the vehicle suspended by a classical damper or Electro- Rheological (ER) damper. Many types of roads are tested for vibration effect on the driver and suspension of the vehicle. A computer programs are constructed which include a classical damper or (ER) damper and can be implemented on a full vehicle suspension. Also a simulation program (MATLAB-SIMULINK) from which any response to any changes in any parameter can be obtained. A comparison between the types of roads as effect for heave, front and rear wheel suspension was studied. Also effect of voltage input to (ER) damper on vibrations of the vehicle was investigated. © 2013 Praise Worthy Prize S.r.l. - All rights reserved.