A fast and parametric torque distribution strategy for four-wheel-drive energy-efficient electric vehicles

Dizqah, Arash Moradinegade, Lenzo, Basilio, Sorniotti, Aldo, Gruber, Patrick, Fallah, Saber and De Smet, Jasper (2016) A fast and parametric torque distribution strategy for four-wheel-drive energy-efficient electric vehicles. IEEE Transactions on Industrial Electronics, 63 (7). pp. 4367-4376. ISSN 0278-0046

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Abstract

Electric vehicles (EVs) with four individually controlled drivetrains are over-actuated systems, and therefore, the total wheel torque and yaw moment demands can be realized through an infinite number of feasible wheel torque combinations. Hence, an energy-efficient torque distribution among the four drivetrains is crucial for reducing the drivetrain power losses and extending driving range. In this paper, the optimal torque distribution is formulated as the solution of a parametric optimization problem, depending on the vehicle speed. An analytical solution is provided for the case of equal drivetrains, under the experimentally confirmed hypothesis that the drivetrain power losses are strictly monotonically increasing with the torque demand. The easily implementable and computationally fast wheel torque distribution algorithm is validated by simulations and experiments on an EV demonstrator, along driving cycles and cornering maneuvers. The results show considerable energy savings compared to alternative torque distribution strategies.

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Research Centres and Groups: Dynamics, Control and Vehicle Research Group
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA0168 Systems engineering
T Technology > TJ Mechanical engineering and machinery > TJ0163.26 Energy conservation
T Technology > TJ Mechanical engineering and machinery > TJ0212 Control engineering systems. Automatic machinery (General)
T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL0001 Motor vehicles.Cycles
Depositing User: Arash Moradinegade Dizqah
Date Deposited: 21 Mar 2019 11:11
Last Modified: 01 Jul 2019 18:15
URI: http://sro.sussex.ac.uk/id/eprint/82680

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