Traction control for electric vehicles: A novel control scheme

Traction control is critical to avoid loss of control on low-adhesion road surfaces. Electric vehicles have faster torque response derived from the motor, as well as more flexible powertrains with in-wheel motors, which can significantly improve the dynamic control performance. We propose a novel traction control scheme for electric vehicles. A judgment unit of the slip ratio is designed after the error calculation. The driver´s handling on the pedal is superimposed on the control output of the slip controller to coordinate the driver´s handling. Further, combined feedforward plus feedback control is designed to eliminate the steady error and improve the dynamics. The control performance is evaluated with co-simulation based on ADAMS and MATLAB SIMULINK for high fidelity.