A novel 3-dof parallel mechanism employed in a vehicle suspension for the improvement of handling performance

Abstract

Since the last three decades the chassis control technology have helped reduce accidents caused by the loss of directional control or vehicle rollover. Several technologies are used, but independent control of braking force for the left and right wheels is the most used. This work introduces a novel 3-dof parallel mechanism employed in a vehicle suspension for the improvement of handling performance and contributes to the vehicle stability control. By repositioning the attachment points of the alternative rear vehicle suspension, the parallel mechanism is able to change the lateral force magnitude during several maneuvers, by adjusting the camber angle, toe angle and the body roll angle. The results show the potential of the mechanism to improve vehicle dynamic behavior, when compared with a car with conventional suspension system. The evaluation was based on three maneuvers: steady-state cornering, fishhook and double lane change.