Electro-Hydraulic Braking System Modelling and Simulation 2003-01-3336
The first step toward a braking system ‘by wire’ is Electro-Hydraulic Braking System (EHB). The paper describes a method to evaluate through virtual experimentation the actual improvement in vehicle behaviour, from the point of view of both handling and comfort, including also pedal feeling, due to EHB. The first step consisted in modelling the hydraulic unit, comprehensive of sensors. Then it was conceived a control logic devoted to medium-low intensity braking manoeuvres, without ABS intervention, to determine an optimal braking force distribution and pedal feeling depending on the manoeuvre. A failsafe strategy, complete of on board diagnosis, to prevent dangerous system behaviour in the eventuality of a component failure was carried out and tested. Finally, EHB wheel pressure sensors were used to improve both ABS performance, increasing the adherence estimation, and Vehicle Dynamics Control (VDC) performance, through a more precise actuation. New ABS/VDC control strategies integrated with EHB were conceived and some of the main results obtained are presented.
Citation: Petruccelli, L., Velardocchia, M., and Sorniotti, A., "Electro-Hydraulic Braking System Modelling and Simulation," SAE Technical Paper 2003-01-3336, 2003, https://doi.org/10.4271/2003-01-3336. Download Citation
Author(s):
Luigi Petruccelli, Mauro Velardocchia, Aldo Sorniotti
Affiliated:
Fiat Auto, Politecnico di Torino
Pages: 10
Event:
21st Annual Brake Colloquium & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Electronic Braking, Traction, and Stability Controls, Volume 2-PT-129
Related Topics:
Braking systems
Vehicle dynamics /flight dynamics
Sensors and actuators
Wheels
Comfort
Logistics
Pressure
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