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Complexity
Volume 2018, Article ID 7030184, 14 pages
https://doi.org/10.1155/2018/7030184
Research Article

Intelligent Torque Vectoring Approach for Electric Vehicles with Per-Wheel Motors

1Tecnalia Research & Innovation, Industry and Transport Division, Donostia, Spain
2Department of Automatics and System Engineering, Faculty of Engineering of Bilbao, University of the Basque Country (UPV/EHU), Bilbao, Spain

Correspondence should be addressed to Alberto Parra; moc.ailancet@arrap.otrebla

Received 24 November 2017; Revised 15 January 2018; Accepted 23 January 2018; Published 25 February 2018

Academic Editor: José Manuel Andújar

Copyright © 2018 Alberto Parra et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Transport electrification is currently a priority for authorities, manufacturers, and research centers around the world. The development of electric vehicles and the improvement of their functionalities are key elements in this strategy. As a result, there is a need for further research in emission reduction, efficiency improvement, or dynamic handling approaches. In order to achieve these objectives, the development of suitable Advanced Driver-Assistance Systems (ADAS) is required. Although traditional control techniques have been widely used for ADAS implementation, the complexity of electric multimotor powertrains makes intelligent control approaches appropriate for these cases. In this work, a novel intelligent Torque Vectoring (TV) system, composed of a neuro-fuzzy vertical tire forces estimator and a fuzzy yaw moment controller, is proposed, which allows enhancing the dynamic behaviour of electric multimotor vehicles. The proposed approach is compared with traditional strategies using the high fidelity vehicle dynamics simulator Dynacar. Results show that the proposed intelligent Torque Vectoring system is able to increase the efficiency of the vehicle by 10%, thanks to the optimal torque distribution and the use of a neuro-fuzzy vertical tire forces estimator which provides 3 times more accurate estimations than analytical approaches.