Model-Based Estimation of Wheel Slip in Locomotives

This study presents a simulation model of a locomotive which includes the longitudinal, vertical, pitch and wheelset rotational dynamics. The model captures the dynamics that are most important for wheel slip control. An estimation model is developed based on this simulation model. Initial simulations suggest that accurate and fast estimation of the adhesion forces of the individual wheelsets, as well as other important parameters including the coupler force and creep, can be achieved.