Theoretical approach robust stability and front wheel for improving the vehicle maneuverability by active steering control

The unstabilization of limit-oversteer vehicles depends heavily on the saturation characteristics of the rear cornering forces. In this paper, an anti-spin condition of vehicles under the saturation characteristics of the rear cornering forces is examined from the view point of robust stability control. Then, an active front wheel steering control system satisfying the anti-spin condition is designed by H-infinity control. Furthermore, vehicle maneuverability is improved by adaptive control approach.