Study on the Quarter Vehicle Mathematical Model Based on Hydro-pneumatic Suspension

A nonlinear mathematical model of hydro-pneumatic suspension in vehicle and a quarter vehicle mathematical model are set up. Computer programs for simulation using Matlab/simulink is developed. By using the computer simulation program, we can obtain the parameters which include the acceleration of the unsprung mass , the sprung mass and the chair, dynamic force of the tyre and dynamic displacement of the suspension, which provides the basis for evaluating the vehicle's riding comfort and riding safety.