Active suspension of a half car model based on linear control with dynamicabsorbers

This paper presents an active suspension system of a half car model based o n linear control with dynamic absorbers. The model is described by a nonlin ear four degrees of freedom system subject to irregular inputs from a road surface. The active control is composed of a weighted sum of acceleration, velocity and displacement of the vehicle body at front/rear suspension loca tions. The dynamic absorbers are added to the wheel axles in order to decre ase the suspension and the tyre deflections. The simulation results indicat e that the proposed active suspension is very effective in the vibration is olation.