Relevant bibliographies by topics / Railway on-board subsystem

Academic literature on the topic 'Railway on-board subsystem'

Author: Grafiati
Published: 10 March 2023

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Journal articles on the topic "Railway on-board subsystem"

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Adamski, Dominik, and Łukasz Zawadka. "Integration Tests of ETCS On-board Subsystems Based on the Requirements of the Technical Specifications for Interoperability of the ‘Control-Command and Signalling’ Subsystem." Problemy Kolejnictwa - Railway Reports 65, no. 193 (December 2021): 69–75. http://dx.doi.org/10.36137/1931e.

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Achieving the interoperability of the European rail system in each Member State requires many measures to standardise the adopted technical solutions and relevant regulations. However, it is likely that there may be some incompatibilities between individual subsystems, even if these subsystems are designed in accordance with standardised requirements. Interoperable rolling stock may be unable to move freely over an interoperable railway line due to some incompatibilities and differences in the versions of the installed firmware in the ETCS system devices. The article discusses the compliance tests of the proper integration of the on-board subsystem with the trackside subsystem, carried out by the Railway Research Institute. Keywords: interoperability, control-command and signalling, ERTMS, ETCS, TSI, CCS
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Adamski, Dominik, Andrzej Białoń, and Zwadka Łukasz. "Selected aspects of proper integration between ERTMS/ETCS on-board and trackside devices." MATEC Web of Conferences 294 (2019): 05008. http://dx.doi.org/10.1051/matecconf/201929405008.

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Achieving the interoperability of the European rail system requires many measures to unify technical solutions as well as regulations in each Member State. However, there is a possibility of some incompatibilities between individual subsystems despite generating them in accordance with unified applicable requirements. It is possible that the interoperable rolling stock will not be able to move freely over the interoperable railway line due to some incompatibilities and differences in the versions of the installed firmware in the ERTMS/ETCS system devices. In connection with the above the correct integration of rail vehicles with track-side equipment should be examined by means of tests under operating conditions. The article presents compliance tests of the correct integration of the on-board subsystem with the track-side subsystem which are carried out by the Railway Research Institute.
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Zawadka, Łukasz, and Dominik Adamski. "Selected Aspects of Control-Command and Signalling On-Board Subsystem Verification." Problemy Kolejnictwa - Railway Reports 64, no. 187 (June 2020): 125–28. http://dx.doi.org/10.36137/1877e.

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This article describes the procedures, standard parameters and control requirements to be performed in order to achieve EC verification of a Control-Command and Signalling On-board Subsystem. An analysis of issues related to the assessment of the on-board subsystem is presented in terms of the necessary checks that must be performed by a notified body and the issues of interoperability tests of the on-board ERTMS with track-side infrastructure. Providing railway interoperability is strictly related to the introduction of unified rules for the assessment and verification of the ETCS and GSM-R subsystems that are part of the European Rail Traffic Management System (ERTMS). The article describes procedures, standard parameters, requirements and necessary controls that must be implemented to carry out EC Verification of a Control-Command and Signalling On-board Subsystem. Reference is also made to the issues of ERTMS on-board compatibility tests with track-side infrastructure. Keywords: TSI, CCO, ERTMS, conformity assessment, interoperability
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Zang, Yu, Wei ShangGuan, Bai-Gen Cai, Hua-Shen Wang, Lovlesh Kaushik, and Michael G. Pecht. "System-Level Fault Prognosis for High-Speed Railway On-Board Systems." Transportation Research Record: Journal of the Transportation Research Board 2673, no. 12 (August 11, 2019): 584–95. http://dx.doi.org/10.1177/0361198119867673.

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The on-board system is the core part of a train control system that ensures traffic safety and improves operational efficiency. At present, fault data processing methods for on-board systems do not show the degradation of components, subsystems, or the system over time, but only focus on identifying faults after a failure has occurred, so fault prognosis cannot be realized. This paper applies a multilevel flow model based on system-level failure mode and effect analysis. The model defines the primary and secondary alarms, divides the failure modes into different levels, and ranks the risk priority numbers at different levels. The Balise transmission system is then used as an example to demonstrate the system-level fault prognosis methodology, and the variables from different levels are combined through the component model, subsystem model, and system model. The results are verified according to the actual operation manual.
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Shi, Lijuan, and Jian Wang. "Reliability analysis on the train control system in the CTCS-3 operating mode." Smart and Resilient Transport 3, no. 1 (March 4, 2021): 25–36. http://dx.doi.org/10.1108/srt-10-2020-0019.

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Purpose This paper aims to study the reliability of the high-speed train operation control system in the Chinese Train Control System Level 3 (CTCS-3) operating mode. Design/methodology/approach Dynamic fault tree and Bayesian network method are adopted to analyze the reliability and weakness of the CTCS-3 system. Findings First, a physical architecture and data flow diagram of the CTCS-3 system are established according to the typical structure and functions of the CTCS-3 system. Second, the dynamic fault tree of the CTCS-3 system is constructed. Considering the prior probability of the bottom event and the existence of dynamic redundancy, the dynamic fault tree is transformed into a Bayesian net. The reliability of the CTCS-3 system is carried out based on the prior probability and the weakness that affects the reliability of the system based on the posterior probability is also analyzed by the Bayesian network. Finally, it is disclosed that the impact of the on-board subsystem on the reliability of the CTCS-3 system is generally greater than that of the ground subsystem. The two weakest modules in the onboard subsystem are the driver-machine interface (DMI) and balise transmission module (BTM) and the weakest one in the ground subsystem is Balise. The analysis results are generally consistent with the malfunctions in the field operation of China’s high-speed railway. Originality/value (1) By reasoning, the reliability of the train operation control system in the CTCS-3 operating mode meets the standard requirements. (2) Through backward reasoning, it is found that the failure of the onboard subsystem leads to a greater probability of failure of the train control system. (3) The DMI, BTM and automatic train protection computer unit modules are weak components in the onboard subsystem. Vital digit input&output, train interface unit and train security gateway are rarely involved in previous research, the result in this paper shows that these three modules are also weak components in the subsystem, which requires attention.
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Adamski, Dominik, and Krzysztof Ortel. "Verification of proper integration between onboard ERTMS/ETCS system with polish railway infrastructure." AUTOBUSY – Technika, Eksploatacja, Systemy Transportowe 19, no. 6 (June 30, 2018): 334–38. http://dx.doi.org/10.24136/atest.2018.088.

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Paper discussed the issues of achieving mutual compatibilyty between Control-Command and Signalling On-board and Trackside Subsystems. Particular attention was paid to tests perfomed for ERTMS/ETCS onboard units.
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Pugi, Luca, Alberto Reatti, and Fabio Corti. "Application of Wireless Power Transfer to Railway Parking Functionality: Preliminary Design Considerations with Series-Series and LCC Topologies." Journal of Advanced Transportation 2018 (December 27, 2018): 1–14. http://dx.doi.org/10.1155/2018/8103140.

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There is a wide literature concerning the application of inductive power transfer (IPT) to light railway systems. In this work, proposed application is innovative with respect to existing literature: static current collection on conventional railway lines is proposed in order to replace the functionalities implemented by conventional battery chargers and the so-called railway “parking” system. According to standards in force, current collection in standstill conditions is limited since pantograph contact shoes and catenary wires have to be protected by thermal overload. These limitations have to be considered since power demand for all the services installed on modern coaches should be higher than 20-40kW. This is a critical technical issue especially for long compositions that have to be prepared for service by activating on-board subsystems such as heating and air conditioning. Additional possible applications should be related to refrigerated wagons in freight compositions. In all these cases the availability of a simple, safe, and compact system should be useful to ensure a wireless power collection to on-board equipment. In this work authors introduce the proposed application and perform some preliminary design considerations. With respect to current literature on IPT systems, authors also introduce some innovative design criteria based on the analogy between resonant electrical system and corresponding mechanical ones. In this way, sizing of the proposed IPT system can be performed using modal methods that are also used for the proper sizing of mechanical vibrating systems, such as example, vehicle suspensions, or pantograph systems.
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Tarlanov, A. T., and Z. M. Kurbanismailov. "Accounting of the magnetic field of the power supply system of a power-capacitive technical object." Russian Technological Journal 8, no. 6 (December 18, 2020): 130–42. http://dx.doi.org/10.32362/2500-316x-2020-8-6-130-142.

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The paper shows the approach and the result of taking into account the mutual influence of on-board subsystems of a complex technical object along the DC power supply circuits. Technical objects are understood as a mobile, energy-intensive vehicle, such as an aircraft, a surface or submarine vessel, or a railway locomotive with strong magnetic fields. The aim of the work is to create a simple and intuitive tool for mathematical modeling of the magnetic field vector at an arbitrarily specified observation point. The task is being solved in order to improve the accuracy of magnetic measurements on board, in particular, in navigation problems. On-board DC networks are considered, to which the approach of mathematical modeling is applied. The disadvantages of commercial programs of a similar purpose are noted. The binding of the objects under consideration to the general coordinate system is described. An analytical algorithm for calculating the magnetic field vector from the on-board cable network with a pronounced 3D trajectory is shown. Examples of visualization of the simulation results are given. An algorithm for calculating the induction vector based on the Biot-Savard law is considered. The algorithm for the analytical solution of the problem is described in detail. A specific power cable of the on-board network is considered. The cable is given by a set of straight conductors with current. The ways of future improvement of the created product with the transition from one observation point to the field map in a given three-dimensional zone of arbitrary position, volume and orientation are outlined. The obtained result is considered as an element of the procedure for achieving electromagnetic compatibility of energy-intensive and highly sensitive subsystems of a modern complex technical object.
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Zhelieznov, Konstantyn I., Artem S. Akulov, Oleksandr M. Zabolotniy, Lyudmila V. Ursulyak, Evgenij V. Chabanuk, Angela O. Shvets, Valeriy G. Kuznetsov, and Anatolii V. Radkevych. "The revised method for calculating of the optimal train control mode." Archives of Transport 51, no. 3 (September 30, 2019): 21–34. http://dx.doi.org/10.5604/01.3001.0013.6160.

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Development of a method for calculating the optimal mode of conducting a train in terms of energy saving meet the safety requirements and schedules. The method of calculation must solve the assigned tasks without significant time spent on the calculation. To implement this method of calculation was used a simplified model of the train as a controlled system. The existing mathematical and algorithmic methods for solving isoperimetric problems of finding the optimal solution in the presence of restrictions on resources were the information base for methodology development. Scientific works of domestic and foreign scientists, professional periodicals, materials of scientific and practical conferences, methodical and normative materials, currently in force on Ukrainian Railways. The results of these studies were used to create simulators on the basis of computer technology for the training of locomotive drivers. The scientific novelty of the proposed calculation method consists in applying the simplified calculations of the status of the train as a controlled system, without the use of differential equations of motion that allows to significantly increase the speed of the calculations. This, in turn, will solve the problems of finding optimal control in real time, taking into account changing conditions during the movement of the train. The practical significance of the obtained results is the use of such a calculation method that does not require significant time for its implementation and can be used as a subsystem of the on-board train control system capable of per-forming calculations taking into account changes in the current train situation.
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Zhang, Zhenhai, and Yuerong Wang. "Research on reliability analysis strategy of high-speed train ATP on-board equipment under uncertain information." Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability, April 12, 2022, 1748006X2210881. http://dx.doi.org/10.1177/1748006x221088158.

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In view of the incomplete knowledge and lack of data, the system has epistemic uncertainties. This paper uses Bayesian network fusion evidence theory to analyze the reliability of high-speed railway ATP on-board equipment. According to the requirements of safety-critical system reliability analysis, this paper starts with the analysis of system structure and unit module status, comprehensively considering the influence of uncertain information, common cause failure, recovery mechanism, and degraded operation on system reliability. In this paper, with the advantage of the Bayesian network in the description of events in multiple states, evidence theory is used to reason about the system under incomplete information conditions, obtain the availability interval of on-board subsystems and discuss the impact of the degraded operation on system availability. The [Formula: see text] factor model is used to analyze common cause failures, and then the Bayesian network modeling of common cause failures is realized by adding common cause failure nodes. The results show that the method enhances the Bayesian network’s ability to process uncertain information, and the common cause failure data of the train control on-board subsystem is continuously accumulated. The factor model can be used to obtain a more practical common cause failure rate.
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Dissertations / Theses on the topic "Railway on-board subsystem"

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VETTORI, GREGORIO. "Development of an innovative localization algorithm for railway vehicles." Doctoral thesis, 2013. http://hdl.handle.net/2158/798657.

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Book chapters on the topic "Railway on-board subsystem"

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Pugi, Luca, and Benedetto Allotta. "Hardware-In-the-Loop Testing of On-Board Subsystems." In Railway Safety, Reliability, and Security, 249–80. IGI Global, 2012. http://dx.doi.org/10.4018/978-1-4666-1643-1.ch011.

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In this chapter some case-studies, based on typical topics of industrial research for railways, are introduced in order to emphasize some aspects of the mechatronic design with a particular attention to the integration of actuation systems into rig design.
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Arriola, Almir Villaro, Jon Mendizabal Samper, and Juan Meléndez Lagunilla. "Fault Injection for On-Board ERTMS/ETCS Safety Assessment." In Railway Safety, Reliability, and Security, 128–50. IGI Global, 2012. http://dx.doi.org/10.4018/978-1-4666-1643-1.ch006.

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On-Board ERTMS/ETCS equipment performs safety related functions where the tolerable hazard rate is kept below 10-9 f/h. Safety standards such as EN50129 or IEC61508 impose requirements on the architecture used to fulfill this safety figure and the associated Safety Integrity Level (SIL). From these standards, the mandatory use of redundancy and physical independence can be derived. Due to the introduction of these requirements, a new functionality is added at the system level (e.g. majority voting processes among redundant lines). Unfortunately, neither the safety nor the interoperability standards provide technical specification that defines how to test the performance of the complete system when internal malfunction has occurred in safety related components. This chapter proposes the use of fault injection techniques to facilitate safety assessment. By means of communication saboteurs, it is possible to excite and test the associated internal functionality in systems performing safety related functions. The chapter also contributes to the definition of the test setup and test procedure of the architecture-associated safety-related internal functionality of the SIL4 odometer and Balise Transmission Module (BTM) subsystems within the on-board European Railway Traffic Management System/ European Train Control System (ERTMS/ETCS).
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Conference papers on the topic "Railway on-board subsystem"

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Wang, Yuerong, and Zhenhai Zhang. "Reliability modeling and analysis of on-board subsystem of high-speed railway ATO system based on Bayesian network." In 5th International Conference on Traffic Engineering and Transportation System (ICTETS 2021), edited by Yongkang Xing. SPIE, 2021. http://dx.doi.org/10.1117/12.2619970.

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Westfechtel, Simon, Ingo Elsen, Raphael Pfaff, and Marcel Remmy. "Simulation of Big Data from Railway Braking." In EuroBrake 2021. FISITA, 2021. http://dx.doi.org/10.46720/8277610eb2021-ibc-003.

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Condition Monitoring (CM) offers opportunities for improvement of safety, availability while typically also reducing maintenance cost. For some asset classes however, large up-front investments are required. Most notably, for the wagon subsystem of the freight rail system, a close monitoring of brake performance using on-board sensors for monitoring of the brake hardware using e.g. force sensor appears expensive and economically not viable. The approach outlined in this paper picks up on the approach of the author's contribution to Eurobrake 2019, where a big data approach merely based on accelerometer measurements was proposed. This yields the advantage of reducing hardware cost, both initial investment as well as maintenance cost, since accelerometers are everday electronic components which typically show a large lifespan with little degradation. This reduction in hardware cost needs to be compensated by more elaborate computational approaches, since it is based on the contribution of each individual wagon's brake to the braking performance of the entire train consist. By help of randomised mixture of the wagons during train formation, such an approach may be used to detect degradations of individual wagon brakes. Since such an approach relies on multiple train operations, it is obviously not suited for the replacement of the classical operator based pre-departure check. It may however increase safety and availability on an individual wagon basis due to the ability to observe degradation prior to becoming a functional limitation to be handled during a pre-departure check. Furthermore, it is well suited to supplement novel forms of brake assessments, such as automated brake tests or automated visual inspections and thus provide a higher level of safety and availability at reduced overall cost. The paper features a brief recap of the proposed method, integrated into the Wagon4.0 concept, which is one potential hardware and software basis as well as a review of big data approaches. The development of a simulation environment suitable for the generation of big data sets based on a headless MATLAB/Simulink setup on a cluster architecture is described. The model features an approximation of the pneumatic behaviour of the brake pipe, a simplified wheel-rail contact model, varying brake block friction as well as a parameter based model of a distributor valve for each simulated wagon. Thanks to the hardware and software setup, the simulation environment is able to generate braking data in the range of multiple Terabytes, which can then be analysed using big data approaches. Wagon parameters are sourced from a partly randomised digital wagon pool, which can be sent on virtual mission while observing their braking behaviour. The paper finishes with a preview of the intended analysis, which is currently being implemented on the FH Aachen cluster.
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