STUDY OF TORQUE VECTORING CONTROL FOR ACTIVE SAFETY IN REARWHEEL-DRIVEN VEHICLES

Abstract

Torque vectoring control is the one of the recent chassis control system for vehicle active safety, and has been widely used in high-performance vehicles to obtain better traction and cornering ability. New torque vectoring control is proposed in this paper to maximize its stability control performance during the lateral manoeuvre of a vehicle. To maximize the performance, torque reduction scheme at the proper point is adopted to aid the conventional torque vectoring scheme, reducing lateral force loss at a minimum. Lateral force loss of tires causes torque vectoring effect to diminish and also decreases cornering ability, which induces an unnecessary side slip angle. Performance of proposed method is evaluated through simulation using vehicle dynamics software Carsim and Simulink, and simulation conditions are mainly focused on lateral dynamics. Proposed method is compared with conventional control scheme to validate supremacy of proposed one.