A model of a repoint track switch for control

Wright, N. G.; Bemment, Samuel D.; Ward, Christopher P.; Dixon, Roger

doi:10.1109/control.2014.6915199

Cited by 9 publications

(12 citation statements)

References 2 publications

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“…The conventional switch layout (shown in Figure 3) is for the C-switch in the UK rail network, for which the design speed is 25 mph (40.248 km/h) according to NR60 design of Network Rail [19]. Other railway S&C layouts, such as a stub switch layout, are also used in the rail network [20,21]. In the stub switch configuration (shown in Figure 4), the switch toe and heel positions are swapped.…”

Section: Fundamentals Of Sandc Systems: Actuation Mechanisms Sensors Amentioning

confidence: 99%

On the Fault Detection and Diagnosis of Railway Switch and Crossing Systems: An Overview

et al. 2019

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Railway switch and crossing (S&C) systems have a very complex structure that requires not only a large number of components (such as rails, check rails, switches, crossings, turnout bearers, slide chair, etc.) but also different types of components and technologies (mechanical devices to operate switches, electrical and/or electronic devices for control, etc.). This complexity of railway S&C systems makes them vulnerable to failures and malfunctions that can ultimately cause delays and even fatal accidents. Thus, it is crucial to develop suitable condition monitoring techniques to deal with fault detection and diagnosis (FDD) in railway S&C systems. The main contribution of this paper is to present a comprehensive review of the existing FDD techniques for railway S&C systems. The aim is to overview the state of the art in rail S&C and in doing so to provide a platform for researchers, railway operators, and experts to research, develop and adopt the best methods for their applications; thereby helping ensure the rapid evolution of monitoring and fault detection in the railway industry at a time of the increased interest in condition based maintenance and the use of high-speed trains on the rail network.

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Section: Fundamentals Of Sandc Systems: Actuation Mechanisms Sensors Amentioning

confidence: 99%

On the Fault Detection and Diagnosis of Railway Switch and Crossing Systems: An Overview

et al. 2019

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“…The parameter information for the cam and hopper equations are shown in Table III. These are custom-made parts whose parameters are calculated from basic mechanics and physics formulas [5]. Beyond the basic dynamics Equations [1] - [7], it is also important to include the physical limits of the three outputs ±9A for the motor current, ±450rad/s for the motor velocity and a maximum rack position of ±0.095m.…”

Section: A Nonlinear Simulation Modelmentioning

confidence: 99%

“…A detailed mathematical model is developed of the REPOINT concept for controller design. This work in this paper is different from [5] as the work herein includes the detailed process used to define the system parameters in addition to the experimental validation of the model against a laboratory demonstrator.…”

Section: Introductionmentioning

confidence: 99%

Model-Based Controller Design for a Lift-and-Drop Railway Track Switch Actuator

Kaijuka

Dixon

Ward

et al. 2019

IEEE/ASME Trans. Mechatron.

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Track switches are essential in order to enable railway vehicles to change routes however they are also the largest single cause of failure on the railway network. A new generation of switching concepts are emerging from projects like In2Rail, REPOINT and S-Code that promise to improve rail network performance through the use of new mechanisms, monitoring and control systems. This paper focusses on modelling and control of a lab-demonstrator from the REPOINT project. Unlike conventional track switch machines, this actuator needs closed loop feedback control. First, a detailed simulation model of the actuator is developed and validated against experimental results. Two model-based control designs are then developed and tested: a classical cascaded P/PI controller and a modern state feedback controller. The two controllers are compared and it is found that, whilst there are some performance differences, both meet the requirements for use in a redundantly actuated REPOINT switch.

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“…The first concept, which is further developed, is the Back to Back Bistable Switch, see Figure 11. It concerns further development of a turnout concept developed at Loughborough University, which is labelled as ©REPOINT ( [6], [7]). It is a turnout with a switch panel with obtuse switch tongues, while the rail joints are very oblique in design with a special geometry.…”

Section: Review Of New Conceptsmentioning

confidence: 99%

Design of new generation of switches and crossings

Plášek¹,

Raif²,

Vukušič³

et al. 2019

Future Trends in Civil Engineering

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Switches and crossings are the essential elements of railway lines. In 2016, the S-CODE (Switch and Crossing Optimal Design and Evaluation, Shift2Rail) project was initiated, which seeks radically new ways of changing trains between tracks with regard to the growing capacity and reliability. The fundamental objective of the research activity at this stage is to find reliable and robust designs with low life-cycle costs, low carbon footprint, and low maintenance. The use of new materials, manufacturing processes, electronic equipment, and signal processing and mechatronic solutions, is investigated.

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A model of a repoint track switch for control

Cited by 9 publications

References 2 publications

On the Fault Detection and Diagnosis of Railway Switch and Crossing Systems: An Overview

On the Fault Detection and Diagnosis of Railway Switch and Crossing Systems: An Overview

Model-Based Controller Design for a Lift-and-Drop Railway Track Switch Actuator

Design of new generation of switches and crossings

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