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Energies 2015, 8(7), 6820-6840; doi:10.3390/en8076820

Wheel Slip Control for Improving Traction-Ability and Energy Efficiency of a Personal Electric Vehicle

1
School of Mechanical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan 712-749, Korea
2
Department of Advanced Energy, Graduate School of Frontier Sciences, the University of Tokyo, Kashiwa, Chiba 277-8561, Japan
3
School of Mechanical Engineering, Kyungpook National University, 80 Daehak-ro, Bukgu, Daegu 702-701, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Joeri Van Mierlo
Received: 20 May 2015 / Revised: 29 June 2015 / Accepted: 30 June 2015 / Published: 7 July 2015
(This article belongs to the Special Issue Advances in Plug-in Hybrid Vehicles and Hybrid Vehicles)
View Full-Text   |   Download PDF [3613 KB, uploaded 7 July 2015]   |  

Abstract

In this paper, a robust wheel slip control system based on a sliding mode controller is proposed for improving traction-ability and reducing energy consumption during sudden acceleration for a personal electric vehicle. Sliding mode control techniques have been employed widely in the development of a robust wheel slip controller of conventional internal combustion engine vehicles due to their application effectiveness in nonlinear systems and robustness against model uncertainties and disturbances. A practical slip control system which takes advantage of the features of electric motors is proposed and an algorithm for vehicle velocity estimation is also introduced. The vehicle velocity estimator was designed based on rotational wheel dynamics, measurable motor torque, and wheel velocity as well as rule-based logic. The simulations and experiments were carried out using both CarSim software and an experimental electric vehicle equipped with in-wheel-motors. Through field tests, traction performance and effectiveness in terms of energy saving were all verified. Comparative experiments with variations of control variables proved the effectiveness and practicality of the proposed control design. View Full-Text
Keywords: electric vehicles; driving force observer; sliding mode control; vehicle velocity estimation electric vehicles; driving force observer; sliding mode control; vehicle velocity estimation
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. (CC BY 4.0).

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MDPI and ACS Style

Nam, K.; Hori, Y.; Lee, C. Wheel Slip Control for Improving Traction-Ability and Energy Efficiency of a Personal Electric Vehicle. Energies 2015, 8, 6820-6840.

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