Constraint-force driven control design for rail vehicle virtual coupling

2021 ◽  
pp. 107754632110079
Author(s):  
Bin Wang ◽  
Dengke Yang ◽  
Xinrong Zhang ◽  
Xingheng Jia
Keyword(s):  
Dynamic Model ◽  
Traffic Management ◽  
Control Method ◽  
Constraint Force ◽  
Explicit Equation ◽  
Coupling Problem ◽  
Railway Traffic ◽  
Rail Vehicle ◽  
Virtual Coupling ◽  
Traffic Management System

This study investigates the constraint-force driven control problem of virtual coupling. To solve the constraint force, the explicit equation of vehicle motion with equality constraints is established using the Udwadia–Kalaba approach. First of all, this study introduces a brief overview of virtual coupling concepts in the European Railway Traffic Management System and some scenes of virtual coupling. The control method is proposed to enable the mechanical system to follow the designed constraint. Moreover, the dynamic model for virtual coupling problem is established. Second, combined with the dynamic model, the equation constraint is designed to make the rail vehicle movenment reach the control objective. By solving the equation based on the Udwadia–Kalaba approach, the control inputs that can render the vehicle to move along the desired trajectory. Third, numerical simulation results demonstrate the effectiveness of the proposed method in virtual coupling problem.

scholarly journals Compositional modeling of railway Virtual Coupling with Stochastic Activity Networks

2021 ◽  
Author(s):  
Francesco Flammini ◽  
Stefano Marrone ◽  
Roberto Nardone ◽  
Valeria Vittorini
Keyword(s):  
Traffic Management ◽  
Travel Demand ◽  
Network Capacity ◽  
System Capacity ◽  
Railway Traffic ◽  
Stochastic Activity Networks ◽  
Activity Networks ◽  
Virtual Coupling ◽  
Railway Capacity ◽  
Stochastic Activity

AbstractThe current travel demand in railways requires the adoption of novel approaches and technologies in order to increase network capacity. Virtual Coupling is considered one of the most innovative solutions to increase railway capacity by drastically reducing train headway. The aim of this paper is to provide an approach to investigate the potential of Virtual Coupling in railways by composing stochastic activity networks model templates. The paper starts describing the Virtual Coupling paradigm with a focus on standard European railway traffic controllers. Based on stochastic activity network model templates, we provide an approach to perform quantitative evaluation of capacity increase in reference Virtual Coupling scenarios. The approach can be used to estimate system capacity over a modelled track portion, accounting for the scheduled service as well as possible failures. Due to its modularity, the approach can be extended towards the inclusion of safety model components. The contribution of this paper is a preliminary result of the PERFORMINGRAIL (PERformance-based Formal modelling and Optimal tRaffic Management for movING-block RAILway signalling) project funded by the European Shift2Rail Joint Undertaking.

scholarly journals DEPLOYMENT OF ERTMS IN CZECH REPUBLIC

2016 ◽  
Vol 5 ◽  
pp. 69 ◽  
Author(s):  
Jiří Vopava ◽  
Mária Jánešová ◽  
Radek Kratochvíl
Keyword(s):  
European Union ◽  
Czech Republic ◽  
Control System ◽  
Traffic Management ◽  
Management System ◽  
Train Control ◽  
Rail Vehicle ◽  
Train Control System ◽  
European Union Countries ◽  
Traffic Management System

The article describes current situation and expected deployment of international standard for automatic rail vehicle protection in Czech Republic for period 2014 – 2020. Article introduces expected status in 2020 and subsequent implementation of commitments until 2026. It introduces expected result of gradual implementation for tracks and vehicles. It also displays brief deployment overview of European Rail Traffic Management System in European Union countries for each level of European Train Control System.

scholarly journals European railway traffic management system validation using UML/Petri nets modelling strategy

2010 ◽  
Vol 2 (2) ◽  
pp. 113-128 ◽  
Author(s):  
Sana Jabri ◽  
El Miloudi El Koursi ◽  
Thomas Bourdeaud’huy ◽  
Etienne Lemaire
Keyword(s):  
Petri Nets ◽  
Traffic Management ◽  
Management System ◽  
Railway Traffic ◽  
System Validation ◽  
Traffic Management System

scholarly journals Design and Simulation of a Decentralized Railway Traffic Control System

2016 ◽  
Vol 6 (2) ◽  
pp. 945-951 ◽  
Author(s):  
T. Kara ◽  
M. Cengiz Savas
Keyword(s):  
Control System ◽  
Control Systems ◽  
Traffic Control ◽  
Traffic Management ◽  
General Structure ◽  
Railway Transportation ◽  
Railway Line ◽  
Railway Traffic ◽  
Traffic Control System ◽  
Traffic Management System

With the increasing use of railway transportation, various methods have been developed for the control and management of train traffic. Train traffic control systems that are currently in use are overwhelmingly centralized systems. In this study, the development of the general structure of railway traffic control techniques is examined, centralized and decentralized control systems are investigated, and an alternative train traffic control system, the Decentralized Train Traffic Management System (DTMS), is suggested. Simulation results on the possible application of the proposed method to a railway line in South-East Turkey are employed to evaluate the performance of the developed system.

scholarly journals New systems in management of railway traffic in Poland

2017 ◽  
Vol 2017 (10) ◽  
pp. 45-53
Author(s):  
Janusz Dyduch ◽  
Mieczysław Kornaszewski
Keyword(s):  
Mobile Communications ◽  
Traffic Control ◽  
Traffic Management ◽  
High Reliability ◽  
Signaling Systems ◽  
Railway Traffic ◽  
Traffic Management System ◽  
Microprocessor Technology ◽  
And Control ◽  
Rail Traffic

The new computer's solutions and microprocessor technology, microcomputers and the programmable controllers (PLC) for management of train traffic, which are implemented, contribute to the creation of modern rail traffic control systems. These systems provide high reliability, low power consumption, stability and safety of the trains' movement. One of the most important things for the boards of railway European countries is unification the systems of rail transport, in particular unification the signaling systems and control of the rail traffic. A good solution is as soon as possible implementation the European Rail Traffic Management System (ERTMS), which connect the system of safe operation of trains ETCS and the digital Global System for Mobile Communications – Railways GSM-R.

scholarly journals Competence Development and Management in Malaysian Railway Traffic Management System

2020 ◽  
Vol 4 (1) ◽  
pp. 11-21
Author(s):  
Shanmuga Sundaram Ts ◽  
Kamran Shavarebi
Keyword(s):  
Traffic Management ◽  
Management System ◽  
Quantitative Research ◽  
Research Study ◽  
Railway Network ◽  
Core Element ◽  
Railway Traffic ◽  
Whole Process ◽  
Competence Management ◽  
Traffic Management System

The purpose of this paper is to introduce a systematic approach to develop and manage competence of employee in the field of Traffic Management System (TMS) of Malaysian railway industry. The outcome of this research shall conclude a framework for competence management and define a benchmark for practice in this industry. Previous studies in competence management in the field of TMS mainly limited to non-Malaysian railway and from different type of railway network. The framework for this research study uses component of competence as core element mediate by suitable element to develop and enhance competence. This descriptive quantitative research study uses suitable competency model to explore the competence of the TMS employee. Following this, a suitable technique and method for learning and training method propose for Malaysian railway TMS operation employee. This whole process is summarized into a competence management framework.

scholarly journals Novel approach for validation of innovative modules for railway traffic management systems in a virtual environment

2021 ◽  
pp. 095440972110418
Author(s):  
Jin Liu ◽  
Cristian Ulianov ◽  
Paul Hyde ◽  
Anna Lina Ruscelli ◽  
Gabriele Cecchetti
Keyword(s):  
Traffic Management ◽  
Management Systems ◽  
Business Service ◽  
Communication Platform ◽  
Testing Environment ◽  
Railway Traffic ◽  
Novel Approach ◽  
Railway System ◽  
Traffic Management System ◽  
Technology Demonstrator

To increase operational efficiency, resilience and capacity of the railway system, the development of modern railway traffic management system (TMS) has attracted more and more attention in recent years. To support the development and implementation of the next generation of TMS and related applications, advanced data collection, transmission and processing approaches, digitalised databases, and virtual validation platforms, etc., are required. In the context of the TMS development (addressed by Technology Demonstrator 2.9 of Shift2Rail Innovation Programme 2), this support is to be provided by a scalable, interoperable and standardised communication platform for internal and external communication between different subsystems, applications and clients. This paper outlines the approach of the ongoing OPTIMA project aimed to develop a communication platform demonstrator for railway TMS based on a novel Integration Layer (IL) and its various interfaces to entities including integration layer services, TMS service, rail business service, external services and operator workstations. Further detailed discussion in this paper relates to the approach to validating the communication platform demonstrator as a functional entity, and as a virtual testing environment to validate railway traffic management and other applications. The validation approach for the applications tested on the communication platform demonstrator is also presented. The results of future implementation of this validation approach will be used to assess the functionality of the communications platform demonstrator developed, and the initial TMS applications tested on it, and form an important step towards developing and implementing IL based communications platforms for future TMSs.

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