Design of an Integrated Weighted One Step Ahead and Fuzzy Yaw Controller for an Electric AWD Powertrain

Coordinated control of various actuators to maintain stability during emergency maneuvers is a major topic of automotive research. This paper discusses a particular approach for controlling and coordinating two electric motors in an electric all wheel drive powertrain (eAWD) during a double lane change maneuver. A two-tiered control scheme is implemented. The upper tier consists of the vehicle level controller which provides target tire forces to the motor controllers, which make up the lower tier. The controllers at the vehicle and motor levels employ a predictive one step ahead concept. The vehicle level controller integrates fuzzy rules to calculate target tire forces for the lower tier controller. This control scheme is implemented and simulated using Simulink and CarSim.