ABSTRACT
Antilock Braking System (ABS) is a crucial active vehicle safety feature in preventing accidents during emergency braking. Electrified vehicles which include both hydraulic and regenerative braking systems provide the opportunity to implement brake torque blending during slip control operation. Nevertheless, ABS is still employed by the conventional friction brakes. Existing Hybrid Electric Vehicles (HEV) have low deceleration threshold to deactivate regenerative brakes. Main benefits of ABS torque blending is to increase the regenerative braking activation window and take advantage of the electric motor’s (EM) high bandwidth. This study evaluates the design and implementation of a new torque allocation algorithm using a Nonlinear Model Predictive Control (NMPC) strategy that can run in real-time, with results showing that wheel-locking can be prevented while also permitting energy recuperation. Simulation using high fidelity model is used to validate the proposed NMPC strategy.
