Авторы:
Издательство:
Дата издания
14.06.2025На каком языке издана
ISSN
2278-0149Область исследования
Тип исследования
Аннотация (краткое описание)
The article presents a simulation model of the anti-slip system processes in the wheel-rail contact, taking into account track gradients and operational conditions. The model is implemented in the Dymola environment and includes: 1) the single SubWagon model using Modelica Mechanics Translational; 2) a traction control and speed self-regulation model of the new-generation KZ8A locomotive; 3) a wheel-rail contact model for analyzing slip and slide phenomena; 4) a computer model of the anti-slip system. In constructing the model, the geographical and topographical features of the real Agadyr-Darya railway section were taken into account, simulating the movement of a train composed of one KZ8A locomotive section and 35 freight wagons. To describe the control logic, Harel’s finite state machine formalism (Statecharts) was applied, which enabled the reproduction of adhesion characteristics under various frictional conditions of the rail surface. The simulation experiment results demonstrated that the developed model reliably reproduces the behavior of traction rolling stock under real operating conditions. This allowed for the synthesis of an adaptive speed controller that accounts for local adhesion coefficient values and the longitudinal track profile (gradients, resistances). The approaches proposed in this work enable preliminary evaluation of the performance of train control systems on specific railway sections before testing or commissioning, as well as modeling the operation of rolling stock under various operational conditions.DOI
10.18178/ijmerr.14.6.685-698Тип публикаций
Практическое значение
As a result of the research, a model of a single wagon SubWagon, was developed in Dymola using both standard and custom-designed blocks. To create the model of a freight train, the blocks were interconnected using Modelica code. The developed wheel-rail contact model is intended for the design of an anti-slip system necessary to protect the contact surfaces of wheel pairs from damage, pre-vent the loss of traction, enhance operational safety, and ensure the stability of traction and braking properties. Experimental characteristics of adhesion have been obtained for various friction conditions of the rail. The proposed model is compatible with other Modelica blocks and can be used as a substitute for the ideal non-slip wheel. The algorithm has been developed using Harel’s formalism of finite state machines, implemented in Modelica StateMachine. The modeled train consists of one section of the new-generation KZ8A electric locomotive and 35 freight wagons. The results demonstrate that implementing a high-performance anti-slip system enables the locomotive to exceed the conventional traction limitations defined by the Rules of Traction Calculation by more than 20%, which has the following implications: Increased train mass for the same track profile; Reduction in the number of trips needed to transport the same freight volume; Decrease in slip/skid cycles, thereby reducing dynamic stresses; Reduction in locomotive-hours by approximately 12–18% for long-distance operations; Estimated reduction in wheel and rail wear by 10–15%, based on empirical studies. Moreover, stabilizing wheel-rail adhesion improves traction drive efficiency and reduces energy losses associated with micro-slips and skids. These factors collectively contribute to operational cost reduction and extend the service life of critical components.Квартиль
Источник квартиля
SCImago (Scopus)Impact Factor
55Количество цитирований
0Данный документ располагается в коллекциях
Международные публикации ученых SU
Scopus
Файлы документа
IJMERR-V14N6-685.pdf