TITLE:
Blended Regenerative Anti-Lock Braking System and Electronic Wedge Brake Coordinate Control Ensuring Maximal Energy Recovery and Stability of All-Wheel-Motor-Drive Electric Vehicles
AUTHORS:
Mahmoud Said Jneid, Péter Harth
KEYWORDS:
EV Stability, Regenerative-ABS, Blended Braking, Energy Recovery, In-Wheel-Motor, Electronic-Wedge-Brake, Brake-by-Wire
JOURNAL NAME:
Journal of Transportation Technologies,
Vol.13 No.3,
July
31,
2023
ABSTRACT: ABS is an active safety system which showed a valuable contribution to vehicle
safety and stability since it was first introduced. Recently, EVs with
in-wheel-motors have drawn increasing attention owing to their greatest
advantages. Wheels torques are precisely and swiftly controlled thanks to
electric motors and their advanced driving techniques. In this paper, a regenerative-ABS
control RABS is proposed for all-in-wheel-motors-drive EVs. The RABS is
realized as a pure electronic braking system called brake-by-wire. A
coordination strategy is suggested to control RABS compromising three layers.
First, wheels slip control takes place, and braking torque is calculated in the
higher layer. In the coordinate interlayer, torque is allocated between
actuators ensuring maximal energy recovery and vehicle stability. While in the
lower layer, actuator control is performed. The RABS effectiveness is validated
on a 3-DOF EVSimulink model through two straight-line braking manoeuvres with
low and high initial speeds of 50 km/h and 150 km/h, respectively. Both regular
and emergency braking manoeuvres are considered with ABS enabled and disabled
for comparison. Simulation results showed the high performance of the proposed
RABS control in terms of vehicle stability, brake response, stopping distance,
and battery re-charging.