An improved method of determining the schemes of locomotive circulation with regard to the technological peculiarities of railcar traffic

Abstract

Запропоновано удосконалення методів визначення схем обігу локомотивів з урахуванням технологічних особливостей вагонопотоків. Розроблено математичну модель, яка дозволяє знайти масу поїздів на маршрутах їх слідування, схеми обігу локомотивів та роботи бригад з врахуванням дислокації парку з різними серіями на полігоні мережі. Для рішення даної математичної моделі застосовано цілочисельний генетичний алгоритм з власною схемою кодування рішення Ключові слова: залізнична мережа, вагонопотік, локомотивне планування, локомотивна бригада, генетичний алгоритм Предложено совершенствование методов определения схем обращения локомотивов с учётом технологических особенностей вагонопотоков. Разработана математическая модель, которая позволяет найти массу поездов на маршрутах их следования, схемы обращения локомотивов и работы бригад с учётом дислокации парка с различными сериями на полигоне сети. Для решения данной математической модели применён целочисленный генетический алгоритм с собственной схемой кодирования решенияКлючевые слова: железнодорожная сеть, вагонопоток, локомотивное планирование, локомотивная бригада, генетический алгоритм UDC 656.223

Assessment of Cargo Delivery Quality Using Fuzzy Set Apparatus

“…The time, as noted therein, is the most important factor in the management of logistics processes in case of considering the minimizing of full time costs when moving goods from the production point to the end user through all the process chains. For modeling of logistics processes and networks in order to optimize and control their operation, such approaches as fuzzy logics, neural network methods and genetic algorithms [10,11] are used. The fuzzy logic is used also by the authors [12] in systems for control of technical systems.…”

A study of the technological reliability of railway stations by an example of transit trains processing

“…Ensuring the reliability of technical systems remains quite an essential problem for the transport industry [1][2][3][4][5][6][7][8]. For rail transport, reliability is usually considered as part of evaluating operational parameters.…”

“…For rail transport, reliability is usually considered as part of evaluating operational parameters. Rationing itself is achieved in practice mostly by analytical methods, and it ensures efficient operation of RTSs within confidence intervals of appropriate calculated optima [7,9,10]. However, this approach can not guarantee the proper level of trouble-free operation of transport systems as it does not take into account the possibility of exceeding the standards due to fluctuations in the transportation volume [11].…”

“…Moreover, the rate of a probability of failure in receiving trains is typically determined in practice only when assessing the accuracy of complying with the timetable [7]. The lack of assessment methods for determining the reliability of the technological processes at railway stations makes it impossible to find the objective level of failure of a timely receipt and timely dispatch of trains, which significantly complicates the development of standards of an effective interaction of the transport system elements.…”

Determining the Rational Motion Intensity of Train Traffic Flows on the Railway Corridors with Account for Balance of Expenses on Traction Resources and Cargo Owners

“…After determining the patterns of locomotive circulation and locomotive crews (Butko et al, 2016), it is important at the development stage of the tight run profile to set the intervals of the specific trains in the freight direction. This will create conditions for the development of the trains schedule that is more adapted to the real operating conditions of the railway network and the needs of consignees.…”