Torque Distribution Algorithm for an Independently Driven Electric Vehicle Using a Fuzzy Control Method

Jinhyun Park, Houn Jeong, In Gyu Jang and Sung-Ho Hwang
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Jinhyun Park: School of Mechanical Engineering Sungkyunkwan University, Suwon, Gyeonggi 440-746, Korea
Houn Jeong: School of Mechanical Engineering Sungkyunkwan University, Suwon, Gyeonggi 440-746, Korea
In Gyu Jang: Advanced technology, Development I Mando Global R&D Center, Seongnam, Gyeonggi 463-400, Korea
Sung-Ho Hwang: School of Mechanical Engineering Sungkyunkwan University, Suwon, Gyeonggi 440-746, Korea

Energies, 2015, vol. 8, issue 8, 1-25

Abstract: The in-wheel electric vehicle is expected to be a popular next-generation vehicle because an in-wheel system can simplify the powertrain and improve driving performance. In addition, it also has an advantage in that it maximizes driving efficiency through independent torque control considering the motor efficiency. However, there is an instability problem if only the driving torque is controlled in consideration of only the motor efficiency. In this paper, integrated torque distribution strategies are proposed to overcome these problems. The control algorithm consists of various strategies for optimizing driving efficiency, satisfying driver demands, and considering tire slip and vehicle cornering. Fuzzy logic is used to determine the appropriate timing of intervention for each distribution strategy. A performance simulator for in-wheel electric vehicles was developed by using MATLAB/Simulink and CarSim to validate the control strategies. From simulation results under complex driving conditions, the proposed algorithm was verified to improve both the driving stability and fuel economy of the in-wheel vehicle.

Keywords: in-wheel electric vehicle; independent 4-wheel drive; torque distribution; fuzzy control; traction control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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