tailieunhanh - A sliding mode algorithm for antilock braking/traction control of EVs

This paper presents a slip suppression controller using sliding mode control method for electric vehicles which aims to improve the control performance of Evs in both driving and braking mode. | SCIENCE & TECHNOLOGY DEVELOPMENT, , - 2015 A sliding mode algorithm for antilock braking/traction control of EVs Minh Ngoc Vu Minh Cao Ta Center for Technology Innovation, Hanoi University of Science and Technology, Vietnam (Manuscript Received on July 15, 2015, Manuscript Revised August 30, 2015) ABSTRACT This paper presents a slip suppression controller using sliding mode control method for electric vehicles which aims to improve the control performance of Evs in both driving and braking mode. In this method, a sliding mode controller is designed to obtain the maximum driving force by suppressing the slip ratio. The numerical simulations for one wheel model under variations in mass of vehicle and road condition are performed and demonstrated to show the effectiveness of the proposed method. Keywords: electric vehicle (EV); traction control; anti-lock braking system (ABS); sliding mode control. 1. INTRODUCTION Electric vehicles (EVs) have become very attractive in replacing conventional internal combustion engine vehicles because of environmental and energy issues. They have received a great attention from the research community. Control methodologies have been actively developed and applied to EVs to improve the EVs performances [1–8] Traction control of electric vehicles has drawn extensive attention since electric motors can produce very quick and precise torques compared to conventional internal combustion engines. In [3], traction control based on a maximum transmission torque estimation (MTTE) approach was proposed. The estimation was carried out by an open-loop disturbance observer. In [10], traction control of electric vehicles using a sliding-mode observer to improve the control performance and the energy conservation was presented. The controller Trang 174 against the model uncertainties is designed to obtain the maximum driving force by suppressing the slip ratio. The anti-lock braking system (ABS) is the most important active

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