Anti-slip control of electric motor coach based on disturbance observer

In electric motor coaches, when the adhesion force coefficient between rail and driving wheel decreases suddenly, the electric motor coach has a slip phenomena. This paper proposes a new estimation method of the adhesion force coefficient, which is based on disturbance observer. Moreover, the proposed adhesion force coefficient estimation system is applied to a new anti-slip control method in this paper. In the numerical simulation results in this paper, the proposed anti-slip control method well regulates the driving wheel torque of electric motor coach and keeps the utilization ratio of maximum adhesion force coefficient 100%.