Abstract
The electrification of the powertrain of vehicles provides completely new control options with respect to the distribution of the individual wheel moments. Through the integration of up to four independently controlled electrical engines in a vehicle, driving and braking torques can be individually adjusted to the current driving situation. Thus electrical engines create a new kind of dynamic vehicle control. Unlike ESP Torque Vectoring influences the vehicle dynamic not only through braking forces but also by setting up positive driving torques allowing for a new way of dynamic driving.
In this paper two different control algorithms are designed which specifies a desired yaw moment to satisfy the vehicle dynamic. The Torque-Vectoring algorithm distributes the yaw moment among the four wheels. The results of a vehicle dynamic simulation have shown that the fuzzy control algorithm takes advantages in the vehicle movement of a four wheel driven electric vehicle and enhances the stability during dynamic driving.
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