Modelling and model validation of heavy-haul trains equipped with electronically controlled pneumatic brake systems

In this paper, a longitudinal dynamical model is proposed for heavy-haul trains equipped with electronically controlled pneumatic brake systems. It is validated against experimental data collected on a train with 200 wagons operated by Spoornet on its COALlink. Various data sets from actual trial runs, handwritten and electronic, off-line and on-line, are gathered and reconciled into a validation data set. Most system parameters are set in accordance with the experimental train setup, while certain parameters, such as damping coefficients, are estimated. The model is subjected to recorded input data for particular track sections. The resultant simulation outputs are compared to real-life data. From this study one may conclude that the longitudinal model is a justified choice for considering factors such as speed regulation, in-train force handling and energy consumption management of heavy-haul trains equipped with electronically controlled pneumatic brake systems.