We propose a novel torque vectoring concept for battery electric vehicles propelled by wheel-individual electric machines. Besides vehicle dynamic aspects, mainly addressed in other works, we especially focus on energy efficiency improvements. Our approach is based on a comprehensive four-wheel model taking the tires' nonlinear characteristics into account. A yaw torque optimized for vehicle dynamics and energy efficiency is calculated by a controller and allocated to the wheel hubs by a torque distribution block considering the efficiency characteristics of the electric machines. The resulting torque vectoring control system leads to an energy consumption reduction of around 10% for many driving situations, containing both high and low lateral acceleration scenarios.
Improved energy efficiency and vehicle dynamics for battery electric vehicles through torque vectoring control
01.06.2015
926892 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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