期刊
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
卷 60, 期 2, 页码 369-380出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TVT.2010.2091659
关键词
Electric vehicles (EVs); sliding-mode observers (SMOs); traction control
资金
- National University of Rio Cuarto
- Agencia Nacional de Promocion Cientifica y Tecnologica
- Consejo Nacional de Investigaciones Cientificas y Tecnicas
A new control strategy for obtaining the maximum traction force of electric vehicles with individual rear-wheel drive is presented. A sliding-mode observer is proposed to estimate the wheel slip and vehicle velocity under unknown road conditions by measuring only the wheel speeds. The proposed observer is based on the LuGre dynamic friction model and allows the maximum transmissible torque for each driven wheel to be obtained instantaneously. The maximum torque can be determined at any operating point and road condition, thus avoiding wheel skid. The proposed strategy maximizes the traction force while avoiding tire skid by controlling the torque of each traction motor. Simulation results using a complete vehicle model under different road conditions are presented to validate the proposed strategy.
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