Active roll control based on predictive control theory is proposed to
overcome the detrimental effects of the time delay of hydraulic actuat
ors. A predictive controller is developed based on the simplified line
ar model of the vehicle, while the simulation is performed on the nonl
inear model. The control result is superior compared to that of the co
nventional feed-forward roll control. A vehicle tends to drift or spin
during cornering with braking or acceleration, because of the nonline
ar characteristics of the tyre side force. A novel roll distribution c
ontrol scheme is developed to improve the trajectory stability during
this situation by changing the ratio of active roll moment distributio
n between front and rear axles. The effectiveness of the proposed meth
ods are illustrated by the computer simulations.