Anti -slip Design for Single Wheel Roller Rig System with Two-Stages Torque Limiter

This paper presents a wheel anti-slip control design and experiment for train applications. A wheel slip is a condition where the wheel's linear speed is faster than the train's linear speed, mainly occurring during the acceleration or contaminant on the rail. Some papers explain that torque control in train applications cannot be done with conventional control, but those papers do not explain how to design anti-slip control in detail. A paper also designs the system to work at the maximum adhesion area to maintain the torque limiter. However, it does not explain if wheel slip occurs outside that area. In this paper, we designed an anti-slip control with the torque limiter method, which has two stages so that there is a limiting mechanism if the optimal area of adhesion is missed. The motor is PMSM (permanent magnet synchronous motor), and the controller is coded at MATLAB Simulink environment with Dspace interface. The experimental results show that the two-stage control method runs well and can minimize wheel slip speed.