GLOBAL POSITIONING SYSTEMS IN TRACTION CALCULATIONS WITH CALCULATION OF WHEELSET WEAR OF ROLLING STOCK

Abstract

The article deals with global positioning systems integrated on VL11 locomotives. The scheme of operation and comparative characteristics of the accuracy of information from GPS and GLONASS systems are given. Expressions of the main resistance components of the friction forces in rolling stock bearings, rolling friction of wheels on rails, resistance forces on track irregularities, air resistance forces and sliding friction forces of wheels on rails are established. Expressions of components of additional resistance are established: resistance forces from bows, curves, resistance when starting from a place, from low temperatures and wind. The speed dependence is constructed using the specified formulas for the specified calculation parameters. The paper uses the law of conservation of mechanical energy, as the main factor takes into account all the effects on the rolling stock, the movement of the train. Shown graphically with a high-speed graph of the tracking section of the considered stage. Based on the law of conservation of mechanical energy, the real value of the main drag forces of cars on the Shebelinka-Zanki tracking section is established, the possibility of obtaining in real time is proved, and it is proposed to use it to optimize the consumption of fuel and energy resources for train traction. The paper considers the issues of establishing the actual technical parameters of the rolling stock crew by approximating (lianerization) the curve of theoretical smallpox resistance to the real one. An algorithm for searching for technical parameters of the crew part is proposed. The statement about the need to introduce mathematical modeling methods in the locomotive economy in order to establish rational traction costs, search for optimal operating modes and mass practical testing.