Influence of Attitude Control by Active Controlled Suspension on Stability of Vehicle

Abstract

Active control of maneuverability and stability of a vehicle on uneven roadways by attitude control with active suspension is studied in this paper. It is well know that the stability against external disturbance due to uneven road surface is one of the most important items regarding maneuverability and stability. A half car model with active suspension is, in this report, used for pitching and bouncing motions, and a two-wheeler model of front steering type is provided for lateral and yawing motions. The influence of pitching motion of vehicle body on stability is obtained by these models. After that, the effects of attitude control of active suspensions with optimal controller on vehicle stability are clarified, for cornering maneuver on uneven road surface.