TRACTION CONTROL OF VEHICLES USING SUPER TWISTING SLIDING MODE CONTROLLER AND A NOVEL TIRE FORCE ESTIMATION STRATEGY

Document Type : Original Article

Authors

1 Ain Shams University, Faculty of Eng., Automotive Department, Cairo, Egypt

2 Ain Shams University, Faculty of Eng., Mechatronics Department, Cairo, Egypt

3 Ain Shams University, Faculty of Eng., Design and Production Dep., Cairo, Egypt

Abstract

Traction control is an active vehicle safety feature designed to help vehicles make
effective use of all the traction available on the road when accelerating on lowfriction
road surfaces. TCS becomes increasingly important to maintain the driver's
controllability of the vehicle to enhance the driving experience under different road
conditions and avoid road crashes by correcting human errors. This paper utilizes the
usage of PID, sliding mode and super twisting sliding mode controllers with a
nonlinear observer to obtain traction control for electric vehicles. The results of the
simulation illustrate the success of the controllers to operate the vehicle at the desired
wheel slip ratio. When a sudden change occurs, a super twisting controller yields the
best control performance comparing to the other systems. A novel unified structure is
used to estimate tire forces by using a nonlinear observer. The independence of the
estimates from the vehicle tire model is the reason for the novelty of this structure.

Keywords

Journal of Al-Azhar University Engineering Sector
Volume 15, Issue 54
January 2020
Pages 112-125

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