Feedforward Compensation Control Based on Steering Angle for Vehicle Roll Stability

The conventional warning feedback control system for vehicle roll stability based ultimate roll angle has much difficulty to regulate the roll behaviour, because the roll velocity is high and the driver has no enough time to take measure when steering with a large longitudinal velocity. In order to overcome the problem, a feedforward compensation control strategy with steering angle for the vehicle stability is proposed. In implementation, the driver´s driving intention is judged based on the steering angle and longitudinal velocity and an anti-roll moment is applied to the vehicle body by the active suspension actuator to prevent the vehicle rolling. The results demonstrate that the scheme of feedforward compensation control with steering angle for the vehicle stability can keep the vehicle much more stable than feedback control if the suspension has a large physical limitation range when the vehicle runs at a high speed.