Title: Brake blending and torque vectoring of road electric vehicles: a flexible approach based on smart torque allocation

Authors: Luca Pugi; Tommaso Favilli; Lorenzo Berzi; Edoardo Locorotondo; Marco Pierini

Addresses: Department of Industrial Engineering, University of Florence (DIEF), Via di S.Marta, 3 Florence, 50139, Italy ' Department of Industrial Engineering, University of Florence (DIEF), Via di S.Marta, 3 Florence, 50139, Italy ' Department of Industrial Engineering, University of Florence (DIEF), Via di S.Marta, 3 Florence, 50139, Italy ' Department of Industrial Engineering, University of Florence (DIEF), Via di S.Marta, 3 Florence, 50139, Italy ' Department of Industrial Engineering, University of Florence (DIEF), Via di S.Marta, 3 Florence, 50139, Italy

Abstract: Application of regenerative braking on electric vehicles has a large impact on several aspects of design, implemented functionalities and overall performances of road vehicles. In particular, multi-quadrant capabilities and improved control performances of modern electric drives can be fully exploited to improve vehicle efficiency, stability and overall environmental impact. Conventional, mechanical friction brakes are currently devoted not only to stop the vehicle but also to the actuation of safety related mechatronics systems such as electronic braking distribution (EBD), AntiBlockierSystem (ABS) and electronic stability control/program (ESC/ESP). The result is an over-actuated system of electrical (electric motors) and mechanical actuators (friction brakes), whose mixed, blended application has to be carefully optimised. In this work a simplified approach is proposed in which concepts transferred from previous studies on high speed trains and autonomous vehicles are re-purposed and adapted in an innovative way to electric road vehicles.

Keywords: vehicle dynamics; regenerative braking; mechatronics; optimal thrust; brake blending; torque allocation; brake wear; energy consumption; electric powertrain modelling; in-wheel motor.

DOI: 10.1504/IJEHV.2020.106339

International Journal of Electric and Hybrid Vehicles, 2020 Vol.12 No.2, pp.87 - 115

Received: 30 Aug 2019
Accepted: 08 Sep 2019
Published online: 02 Apr 2020 *

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