Fuzzy control for the handling stability of motor drive electric vehicle

A direct fuzzy control method is proposed for the purpose of improving the handling stability of an motor drive electric vehicle (EV). The control system is based on sliding mode control. By measurements of vehicle states, the control algorithm determines the level of vehicle stability and intervenes as necessary through individual wheel traction control to provide added stability and handing predictability. Therefore, the stability control system distributes torque and power to each motor to meet the requirements of each wheel. The effectiveness and validation of the proposed fuzzy control method are evaluated both by Matlab/Simulink based on simulations. Simulation results of dynamic responses for sideslip angle and yaw rate of the EV manifest that the fuzzy control system can assist drivers with controlling the stability of the vehicle during adverse driving maneuvers over a variety of road conditions and enhance the handling stability of the EV.