Dynamic Modeling and Active Control of Slip Phenomenon in a Four-axle Locomotive

Nowadays, active control of rail vehicles, wheel slip control, in particular, is of great importance. regarding the various methods of slip control, selecting the best method is necessary for the design of rail vehicles. in this paper, first, a slip simulator for a four-axle locomotive was selected to simulate the slip phenomenon; then, components of this simulator were separately designed, and finally, its 3d model was presented. afterward, dynamic equations were derived based on nonlinear creep theory for this simulator, and the dynamic modeling of the slip was obtained through solving state-space equations. using fuzzy control with three different methods, per vehicle, per bogie, as well as per wheelset, the controller was designed, and finally, the best approach for controlling the slip was determined by adding this controller to the dynamic model.