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The article includes research results of analyzing and evaluating 3ТЕ10М diesel locomotive`s efficiency on a hilly-mountainous direction Marokand-Navoi of Uzbekistan railways while hauling freight trains with and without stopping on through stations (division points).Main parameters of basic movement work of researched UzTE16M3 diesel locomotives are shown as tabled values and graphic dependencies,also equations of organizing necessary calculations mentioned above in accepted range of mass variation are marked here.

A study of the influence of non-linear parameters spring of a freight car suspension (stiffness spring, length base of a bogie, roughnesses railway) on the amplitude and phase fluctuations bouncing body is completed. Defined own vibrational frequency jumps car body as a function of the parameters.

Modern locomotive on board microprocessor-based control systems (MSU) can be used for not only controlling locomotive equipment, but for analyzing the process of their functioning too by means of mathematical statistics. It is confirmed by authors of this article. Through the article is offered method of nearby-failure condition diagnostic by the means of MSU data correlation analysis.

This paper investigates the issue of voltage distortion in the 0.4 kV power supply at electric centralization (EC) posts. Significant voltage distortion may trigger an emergency switch to the backup feeder, potentially leading to failures in railway automation and telemechanic systems. To analyze this problem, a series of field measurements were conducted to assess the quality and harmonic composition of the supply voltage at an EC post. The experimental results revealed a direct correlation between the degree of voltage distortion and the load current on the adjacent traction substation. Using computer simulation tools, a detailed model of the traction substation, including the power supply lines to the EC post, was developed. Based on this model, optimal parameters for a passive LC filter tuned to suppress the 11th and 13th harmonic components - dominant under the 12-pulse rectification scheme - were calculated. A prototype harmonic filter was then constructed and integrated into the power supply line of the EC post. Post-installation field measurements were carried out to evaluate the voltage quality improvement. The results confirm the effectiveness of the selected filter in reducing both the total harmonic distortion (THD) of the voltage and the individual harmonic components of the 11th and 13th orders. During the entire four-month trial operation period, no emergency power transfers were recorded at the EC posts. The findings of this study can be applied to similar systems within DC-electrified railway networks, taking into account variations in rectification schemes and non-traction load power supply configurations.

The analysis of the operational efficiency of freight cars circulating on the Russian railways, shows a lack of basic truck models 18-100 and its modifications and foreign counterparts. We propose a method for increasing the efficiency of the dynamic properties of the freight car with a cart, which has a new design of spring suspension, based on the principle of compensation of external disturbances and presented its advantages.

The purpose of this article is to create mathematical models for a comprehensive assessment of the quality of repairs of collector-brush assembly drive motor vehicles, including an assessment of mechanical and switching components. The objectives of this study are to determine the linguistic variables based on the generated set of diagnostic features, including "beating of the working surface of the collector", "RMS heights collector lamellae", "amplitude of the first harmonic component of the profile of the collector", "the amplitude of the second harmonic component of the profile of the collector" "RMS heights collector slat excluding the first and second harmonic components", "minimum value of the second derivative of the profile of the collector function", "standard deviation of the second derivative of the profile of the reservoir function," "effective value of the higher harmonic components of the collector profile features" that have the greatest diagnostic value and determination of their membership functions, as well as the definition of the complex index of quality of repair and its components: complex index of quality of machining and integrated commutation quality index in the collector-brush unit of the traction motor. Solution of tasks performed using the mathematical apparatus of fuzzy logic through the use of statistical processing of the results of these pilot studies and the calculation of the diagnostic value of the measured and calculated parameters. As a result of the research formed the mathematical model of quality repair in the space of selected features using the apparatus of fuzzy logic for calculating the value of the proposed integrated indicators for arbitrary values of diagnostic parameters. The results may be used to control the quality of repairs of collector-brush assembly of traction motors of the rolling stock.

A study of the influence of non-linear parameters spring of a freight car suspension (stiffness spring, length base of a bogie, roughnesses railway) on the amplitude and phase fluctuations bouncing body is completed. Defined own vibrational frequency jumps car body as a function of the parameters.

The globalization of world economic processes poses challenges for the international transport corridors (ITC) development and their sections as part of national transport systems. The tariff policy and regulatory environment of the transportation process form the institutional prerequisites and cargo base of the ITC, which can become a barrier or driver of its development. The purpose of the work is assess the transport corridor development potential and increase the attractiveness of the ITC by using multimodal transportation schemes to attract cargo flows (including export) from related directions. The paper provides an analysis and development of methods for assessing the prospective transport corridor cargo base in the conditions of competition between enterprises of transport modes, taking into account the national transport network configuration. The article presents a method for assessing the cargo base in the conditions of monomodal and multimodal transportation based on logistics principles-reducing the time and cost parameters of the transportation organization scheme. The possibilities of transport modes integrative development are show in the zone of gravity of the transport corridor due to the transport in multimodal transport organization. The geographical Russian Federation «transit» location on the Eurasian continent opens up wide opportunities for the convergence of the European and Asian countries economies through the development of the ITC that runs through our territory. The article considers the prospects for the ITC «North-South» development, which depend on geopolitical and infrastructural (technological) factors. The technological factor relate to such problems of the Russian transport system as the congestion of infrastructure at the approaches to the ports of the Azov-black sea basin, the Moscow-Likhaya-Rostov-on-don-Krasnodar railway, etc., which directly affect the potential of the transport corridor. A graphical diagram present main railway and automobile communications of the ITC «North - South» and road network with distances for tariff calculations.

In this research, a formal strategy for enhancing the electronic distribution of technical documents in railway automation and telemechanics is developed. The accounting and control of device-related documents are formalized using a graph-based model. By creating maximally compatible (non-contradictory) groupings of LSA elements, a micro-command system is created using logical scheme algorithm (LSA) A71 as a case study, illustrating how to simplify the logical scheme (LS). In order to characterize the methods for producing the subsequent micro-instruction code and to depict the parallel execution of internal and external micro-operations, matrix representations are introduced. The study thus suggests a useful formal model and graphical approaches for the analysis, synthesis, and assessment of workflows involving electronic technical documents. These methods aim to minimize the number of internal states in logical structures by forming compatible groups of LSA elements. The resulting micro-commands allow the simultaneous execution of multiple micro-operations within a single micro-cycle, thereby increasing processing efficiency. Extended logical schemes were introduced to better assess the complexity of automata used in managing electronic technical documents. A graphical model of the logical schemes is developed, offering practical tools to design and optimize automation processes. The proposed approach simplifies the control structure while maintaining the system’s functionality, allowing for more efficient monitoring and real-time control in railway operations. This methodology is especially relevant for modernizing technical documentation systems used in the transport sector and integrating them with automation and control mechanisms.

This article is devoted to the development and validation of a system for monitoring and accounting of railway automation and telemetry equipment using NFC technology. The primary objective of the study is to develop technical systems for the maintenance, repair, and storage of a significant amount of equipment in repair and maintenance areas. To select the optimal technical solution, an analysis of existing technologies was conducted, including barcode, QR code, RFID, and NFC. NFC was chosen because it provides high security and data exchange speed, low power consumption, and resistance to external influences, which is critical for the integrity and reliability of accounting information. The research methodology included creating a conceptual warehouse model and using photographs of the equipment maintenance and repair process to formalize time costs. The analysis identified the most inefficient elements-the receiving (Och2) and shipping (Och4) processes, where manual documentation takes up to 20 minutes per device. The proposed system is a comprehensive solution comprising a central node (a phpMyAdmin database server), specialized information and algorithmic support for the warehouse management system, and NFC tags, which serve as a source of basic and reference information about the equipment. Implementation of the system includes the integration of reader devices and the scheduled application of tags directly to the railway automation equipment. The efficiency assessment was conducted through simulation modeling of the warehouse management system using an agent-based approach in the Anylogic platform. The simulation showed that implementing the system within a single RTU processing 3,020 devices per month will reduce the total annual labor costs at the "Och2" and "Och4" stages from 416 to 52 man-hours. The 364 man-hours saved facilitate the redistribution of the electricians' workload, increase overall labor productivity, and enhance the RTU's processing capacity.

This article examines the enhancement of local control and monitoring systems for railway turnouts at stations based on wireless technologies. Instead of the traditional four-wire turnout control scheme, a wireless communication system utilizing a microcontroller and LoRa radio module is proposed. A custom-developed application installed on a tablet authenticates users via login credentials, password, and an NFC card. The application provides functionalities such as viewing the current status of the turnout, switching it to the required position, sending control commands, and recording and archiving operational data. Each command issued is saved both in the tablet’s internal storage (local database) and in a remote server database via the internet. For every command, parameters such as date, username, turnout number, status, and type of operation performed are logged. The newly developed scheme and mobile application enable wireless control of turnouts from the locomotive cabin, creating the possibility of performing shunting operations without the involvement of a shunting operator. The article presents the system’s operating algorithm, user interface, schematic solutions, and key functions of the tablet application. Furthermore, a structural diagram of the wireless turnout control system and a practical model based on an experimental prototype are provided. During the development of the software and hardware solutions, the requirements for ensuring traffic safety based on switch control schemes were thoroughly analyzed and taken into account through the following measures: prior to switching to local control, the section’s occupancy status is automatically verified; the switch position is visually indicated on the tablet; and all commands issued by the user are archived in both local and server databases. Furthermore, the ability to remotely control the switch enables safe operation without the involvement of a maneuvering agent. The proposed approach is considered technically suitable and practice-oriented for implementation in the automation of railway infrastructure.

In this article the tasks of simulation of flows on the railways are discussed. The main purpose of this work is to create a new simulation technology such a complex system as the rail network. Scientific novelty consists in the application of a combination of agent-based and discrete-event approaches in a given subject area. During the conducted study the models of behavior of agents were created, the problematic situation was highlighted and discrete-event part of the model was developed for this situation. The main categories of regular and emergency situations are analyzed, a list of situations for modelling are created. Choices for removal emergency situations were discussed, an algorithm for their processing (discrete-event part of the model) was chosen. An illustration of the study is a simulation model of the railway section of the West-Siberian railway with the possibility of rebuilding the train schedule, which depend on the addition of regular or emergency situation. As a result of the simulation, output such as a traffic graph and an information table are generated. There are plans to use new technology for creating model of "transport hub”.