Wheelslide and Wheelskid Protection for a Single-Wheel Drive and Brake Module (SDBM) for Rail Vehicles

Integrated Model Predictive Control of High-Speed Railway Running Gears With Driven Independently Rotating Wheels

“…In this context, some groups proposed slip-based longitudinal control. These methods depend on a desired slip area in which the best braking performance (i. e., the maximum adhesion) is assumed to be [8,9]. However, adhesion conditions between wheels and rails are highly variable and depend on environmental influences.…”

Adhesion-Based Maximum-Seeking Brake Control for Railway Vehicles

“…To ensure a safe journey, the braking process is an essential aspect for all means of transport. Regarding railway traffic, the specialty about the braking process is that the brake forces have to be transmitted via steel on steel contacts each with a size of only about 1cm 2 . These two aspects in combination with a contamination of the wheel-rail contact can lead to highly dangerous situations where the braking distance is significantly lengthened [1].…”

“…The goal of these research activities is to minimize braking distances via a maximization of the adhesive force between wheel and rail. Some examples for sophisticated control concepts in this field are described in [2][3][4]. These concepts vary in their elaboration of the control algorithm but they share the same slip-based point of view.…”

Hardware-in-the-Loop Simulation for a Wheel Slide Protection System of a Railway Train

“…The way in which the forces are transmitted in the rolling contact between wheels and rails of railway vehicles is complex from a microscopic viewpoint and is able to be represented mathematically in a highly nonlinear fashion (Stuetzle et al, 2008). The understanding of wheel slide and braking mechanism with rolling contact has a crucial role for the safety and efficiency of railroad vehicle operations.…”