Rethinking Rail Track Switches for Fault Tolerance and Enhanced Performance

Harrison, Tim J.; Bemment, Samuel D.; Ebinger, Emma; Goodall, Roger M.; Ward, Christopher P.; Dixon, Roger

doi:10.1016/j.ifacol.2016.10.564

Cited by 2 publications

(1 citation statement)

References 13 publications

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“…Turnouts are an essential element of any railway network. However, they are also capacity constraints [40,41]. There are many types of turnouts, and their properties vary depending on their destination (use).…”

Section: Related Workmentioning

confidence: 99%

Measurement of the Geometric Center of a Turnout for the Safety of Railway Infrastructure Using MMS and Total Station

Kampczyk

2020

Sensors

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The turnouts in railway infrastructure constitute bottlenecks, limiting the capacity of the entire railway network. Due to their design and geometry, these turnouts force speed limits. The need to ensure the proper technical condition of turnouts has prompted ongoing scientific research and the use of modern technological solutions. Until now, there have been no tests for the correct location of the geometric center of a double and outside slip turnout with the related geometric relationships. Therefore, the main objective of this research was to demonstrate the position of the geometric centre of a double slip turnout and the geometric conditions of the curves of circular diverted tracks by measuring the horizontal versines and geometric irregularities of turnouts. The application of this surveying method, with reference to obtuse crossings and arising from geometric dependencies in the double and outside slip turnout, is defined and implemented (also known as a method for checking the correct location of the geometric center of a turnout—Surveying and Monitoring of the Geometric Center of a Double and Outside Slip Turnout (SMDOST)) via the Magnetic-Measuring Square (MMS) and electronic Total Station. This method also recommends measuring the horizontal versines of the diverted tracks. This paper presents the results of field measurements using the SMDOST and MMS methods, which were applied to carry out an analysis and evaluation of the turnout geometry conditions, thereby presenting the irregularities that cause turnout deformations. The validity of the SMDOST method using MMS and Total Station was thus confirmed. The observations from the conducted research indicate that neglecting measurements of the geometry of the turnouts resulted in additional irregularities in their conditions.

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Section: Related Workmentioning

confidence: 99%

Measurement of the Geometric Center of a Turnout for the Safety of Railway Infrastructure Using MMS and Total Station

Kampczyk

2020

Sensors

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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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Rethinking Rail Track Switches for Fault Tolerance and Enhanced Performance

Cited by 2 publications

References 13 publications

Measurement of the Geometric Center of a Turnout for the Safety of Railway Infrastructure Using MMS and Total Station

Measurement of the Geometric Center of a Turnout for the Safety of Railway Infrastructure Using MMS and Total Station

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

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