ABS for Regenerative Braking in Electric Vehicles

Project members:dr.ir M. Corno (Matteo)
Keywords:Transportation and infrastructure
Sponsored by:SKF

The economical progress is “jammed” by the continuous increasing traffic and pollution. Currently electric vehicles are considered a viable solution to the urban mobility problem.
The research will focus on developing a truly mechatronic approach to the problem of electric vehicle design. By co-designing the hardware and the control algorithms of the vehicle, it will be possible to achieve better performance, safety and sustainability. One of the key features of electric vehicles is the possibility to harvest energy. This proposal is aimed at studying this aspect, particularly focusing on the interactions of energy harvesting with vehicle stability during braking. A considerable amount of effort has been put out in devising regenerative braking strategies, but so far the problem has been studied only from the energy point of view; much there is still to be said regarding the effect of regenerative braking on the vehicle stability. The current strategy in hybrid vehicles is to disable energy harvesting when the ABS system is activated. This strategy is not optimal from the energy or from the vehicle dynamics point of view. Electric vehicles have two complementary braking systems: hydraulic braking system and the electric motor(s). On one side the hydraulic braking system can deliver large braking torques that may be difficult to control in a precise way; on the other side electric motors can generally provide less braking torque but in a more easily controlled fashion. By designing novel ABS strategies that effectively merge the action of the two actuators in a truly multi-input approach, it will be possible to provide safer and more efficient vehicles.

© Copyright Delft Center for Systems and Control, Delft University of Technology, 2017.