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 pape r, an anti-spin condition of vehicles under the saturation characteris tics of the rear cornering forces is examined from the view point of r obust stability control. Then, an active front wheel steering control system satisfying the anti-spin condition is designed by H-infinity co ntrol. Furthermore, vehicle maneuverability is improved by adaptive co ntrol approach.