The Influence of Track Elasticity when travelling on a Railway Turnout

Cereceda, Rodrigo Lagos; Emeterio, Albi San; Viñolas, Jordi; Alonso, Asier; Aizpun, Miguel

doi:10.4203/ccp.104.208

Cited by 5 publications

(6 citation statements)

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“…This is a rather sensitive analog device, so replacing it with the digital analogue xLogic must be explored in more detail. Paper [8] investigated replacing the existing, as well as designing new, elements for a railroad turnout. The authors considered the construction of a mathematical model, which would take into consideration the static and dynamic loads on a railroad turnout's element and could help improve such elements.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Analysis of optimization criteria for the process of switch displacement in a DC railroad turnout

Buriakovskyi

Smirnov²,

Asmolova

et al. 2019

EEJET

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…Thus, our analysis of literary data [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] has revealed the lack of sufficient attention in studies into the improvement of operational functionality of a railroad turnout when using a thyristor converter along with the operated motor.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Analysis of optimization criteria for the process of switch displacement in a DC railroad turnout

Buriakovskyi

Smirnov²,

Asmolova

et al. 2019

EEJET

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“…These systems have shown their efficiency in many years of practice, but today they can not meet the new requirements for highspeed rail transport. Therefore, the need to modernize switch systems is obvious and should be carried out by means of electric drive [9][10][11].…”

Section: Introduction One Of the Main Directions Of Implementation Of The National Transport Strategy Ofmentioning

confidence: 99%

Mathematical modelling of transients in the electric drive of the turnout of the mono-sleeper type with switched-inductor motor

Buriakovskyi¹,

Maslii²,

Asmolova³

et al. 2021

Electrical Engineering & Electromechanics

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Introduction. The study is devoted to the development of the functionality of a railway track switch by introducing a switched-inductor electric drive. This solution justifies simplifying the mechanical part of the switches by changing the gearbox to a ball-screw and locating the all kinematic line of the switches on the mono-sleeper type. Goal. A study of the mono-sleeper turnout type behaviour to meet modern traffic safety requirements and improve operational reliability factors. Methodology. Based on electric drive theory, a kinematic line of a mono-switch turnout type with nonlinear friction characteristic is presented. Using differential equation theory and Laplace transformation, a mathematic description of a four-phase switched-inductor motor with ball-screw in a mechanical line of a single-mass electromechanical system has been made. A simulation mathematical model of the electric drive of mono-sleeper turnout type as the control system with a switched-inductor motor and nonlinear friction characteristic was built in MATLAB. Results. Simulation modelling of a mathematical model of a mono-sleeper turnout type with a switched-inductor motor and ball-screw gear has been developed and implemented. Studies of dynamics of turnout point movement have shown that, in contrast to the motors used today, the switched-inductor motor makes it possible to simplify the mechanical part of the drive, which leads to reduced time spent on laying and maintenance of turnout points, and therefore makes the design more reliable. The application of PID controller and fuzzy speed controller has shown improved dynamics of turnout point, while the fuzzy PID controller provides better performance of the set values and turnout point movements. Originality. First developed a mathematical model of the electric drive of the mono-sleeper turnout type, taking into account nonlinear friction characteristic, as an object of speed control of turnout point movement, is developed. Practical value. The developed mathematical model of a railway track turnout of the mono-sleeper type with a switched-inductor motor and ball-screw gear enables more efficient use of a microprocessor control system, creation of promising electric motor protection means and control of a turnout point.

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“…In Ukraine, the lack of adjustable electric drives for turnouts requires the creation of specialized electric drives. To increase their efficiency, there is a need to create new types of electric drives [12][13][14]. In [15], the questions of the development of the functionality of the railway turnout by introducing an electric drive with a valve-inductor motor were considered, which is justified by the simplification of the mechanical part of the turnout by replacing the gearbox with a ball-screw pair and placing the entire kinematic line of the turnout on one sleeper.…”

mentioning

confidence: 99%

“…Figures 11,12 show the transients of the electric drive of the turnout, namely the movement of the spikes and the speed of the turnout with a PID speed controller, taking into account the nonlinear characteristic of friction at different settings of the speed of movement of the spikes.…”

mentioning

confidence: 99%

Development and study of a microprocessor automatic control system for a mono-switch tie type with a linear inductive electric motor and a discrete speed controller

Buriakovskyi

Asmolova

Maslii³

et al. 2022

Electrical Engineering & Electromechanics

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Introduction. The article is devoted to the development of the microprocessor automatic control system for a gearless controlled electric drive of a mono-switch tie based on a linear inductor electric motor. This solution provides control the position of the switch point, to carry out the transfer process with a smooth drive of shanks to the frame rail, to protect electric motor elements from overloads. Goal. development and study of the behavior of microprocessor automatic control system for mono-switch tie type with linear inductive electric motor and discrete PID speed controller which coefficients are adjusted according to Chin-Hrons-Reswick method to meet modern traffic safety requirements and improve operational reliability factors. Methodology. On the basis of electric drive theory, a kinematic line of a mono-switch tie type with nonlinear friction characteristic is presented. Using differential equation theory and Laplace transformation, a mathematic description of a linear inductor electric motor has been made. Using the z-transform method, a difference equation for describing a discrete PID speed controller is obtained, the coefficients of which are derived using the Chin-Hrons-Reswick method. A simulation mathematical model of the electric drive mono-switch tie type as the microprocessor automatic control system with linear inductive electric motor and discrete PID speed controller and nonlinear friction characteristic was built in MATLAB. Results. Simulation modelling of a mathematical model of the microprocessor automatic control system of the electric drive mono-switch tie type with the linear inductive electric motor and discrete PID speed controller and nonlinear friction characteristic have been developed and performed. Studies of dynamics of switch point movement have shown that, a drive time of less than 0.7 s at a constant speed motor armature of 0.2 and 0.3 m/s provides to meet modern requirements for railway switch points. The application of discrete PID speed controller has shown improved dynamics of switch point. Originality. First for the electric drive of the mono-switch tie type with linear inductive electric motor a mathematical model of the discrete PID speed controller and nonlinear friction characteristic as an object of speed control of switch point movement, has been developed. Practical value. Mathematical model of a railway track switch of the mono-switch tie type with linear inductive electric motor and discrete PID speed controller has been developed to carry out the control of the position of the switch point, process with a smooth drive them to the frame rail, to protect electric motor elements from overloads.

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The Influence of Track Elasticity when travelling on a Railway Turnout

Cited by 5 publications

References 0 publications

Analysis of optimization criteria for the process of switch displacement in a DC railroad turnout

Analysis of optimization criteria for the process of switch displacement in a DC railroad turnout

Mathematical modelling of transients in the electric drive of the turnout of the mono-sleeper type with switched-inductor motor

Development and study of a microprocessor automatic control system for a mono-switch tie type with a linear inductive electric motor and a discrete speed controller

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