ACTIVE ROLL MOMENT DISTRIBUTION BASED ON PREDICTIVE CONTROL

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.