期刊
ENERGIES
卷 7, 期 6, 页码 3748-3763出版社
MDPI
DOI: 10.3390/en7063748
关键词
acceleration slip regulation (ASR); four-wheel drive (4WD); electric vehicle; sliding mode control
资金
- National High Technology Research and Development Program of China [2012AA111603, 2013BAG05B00]
- Program for New Century Excellent Talents in University [NCET-11-0785]
- Beijing Institute of Technology Post Graduate Students Innovation Foundation
This paper presents an acceleration slip regulation (ASR) system for four-wheel drive (4WD) electric vehicles, which are driven by the front and rear axles simultaneously. The ASR control strategy includes three control modes: average distribution of inter-axle torque, optimal distribution of inter-axle torque and independent control of optimal slip rate, respectively, which are designed based on the torque adaptive principle of inter-axle differential and sliding mode control theory. Furthermore, in order to accurately describe the longitudinal tyre force characteristic, a slip rate calculation formula in the form of a state equation was used for solving the numerical problem posed by the traditional way. A simulation was carried out with the MATLAB/Simulink software. The simulation results show that the proposed ASR system can fully use the road friction condition, inhibit the drive-wheels from slipping, and improve the vehicle longitudinal driving stability.
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