scholarly journals Evaluation of suspended rail vehicle movement parameters

Rail Vehicles ◽  
2021 ◽  
pp. 20-29
Author(s):  
Mateusz Kuczyk ◽  
Piotr Jędrzejewski ◽  
Paweł Załuski
Keyword(s):  
Rail Vehicle ◽  
Movement Parameters ◽  
Vehicle Movement

Niniejsza publikacja została poświęcona ocenie parametrów ruchowych koncepcyjnego pojazdu kolei podwieszanej, którą dokonano w oparciu o jego charakterystykę trakcyjną oraz możliwości dynamiczne. W pierwszej kolejności skrótowo opisano konstrukcję proponowanego pojazdu wraz z wyszczególnieniem najważniejszych założeń projektowych. Następnie skupiono się na metodyce oraz samym wykreśleniu charakterystyki trakcyjnej pojazdu, jak również przebiegu jego przyspieszenia w funkcji prędkości. Na koniec poddano ocenie układ hamulcowy poprzez wyznaczenie średniego opóźnienia hamowania w zależności od jego rodzaju. Artykuł ten powstał na podstawie pracy dyplomowej pt. „Koncepcja wagonu silnikowego kolei podwieszanej”, na wydziale Mechanicznym Politechniki Gdańskiej.

scholarly journals DEVELOPMENT OF THE REMOTE-PILOTED VEHICLE ALGORITHMIC SUPPORT AND ON-BOARD NAVIGATION COMPLEX STRUCTURE

2018 ◽  
Vol 8 (4) ◽  
pp. 40-43
Author(s):  
Mykola Mykyjchuk ◽  
Volodymyr Markiv
Keyword(s):  
Noise Immunity ◽  
Complex Structure ◽  
General Purpose ◽  
Interference Immunity ◽  
Common Space ◽  
Algorithmic Support ◽  
Movement Parameters ◽  
Element Base ◽  
Vehicle Movement

The article dwells upon the peculiarities of remote piloted vehicles of on-board navigation complex. It is highlighted that total number of the remote-piloted vehicles have increased and as a result the question of their integration into common space with manned aircraft becomes urgent. It is possible only when specified quality of the remote piloted vehicle movement parameters have been determined, including accuracy and interference immunity. It has been highlighted that remote-piloted vehicle equipment is subject to stringent requirements for minimization of cost, mass and size characteristics and power consumption, which are often mutually contradictory, and their implementation in general leads to deterioration of accuracy. The problem of ensuring accuracy and noise immunity when using the general-purpose element base becomes urgent.

scholarly journals Optimum Railway Transition Curves—Method of the Assessment and Results

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3995
Author(s):  
Krzysztof Zboinski ◽  
Piotr Woznica
Keyword(s):  
Optimization Methods ◽  
Transition Curve ◽  
Vehicle Model ◽  
Circular Arc ◽  
Passenger Comfort ◽  
Rail Vehicle ◽  
Railway Engineering ◽  
Transition Curves ◽  
Vehicle Movement

This article discusses the optimization of railway transition curves, through the application of polynomials of 9th and 11th degrees. In this work, the authors use a 2-axle rail vehicle model combined with mathematically understood optimization methods. This model is used to simulate rail vehicle movement negotiating both a transition curve and circular arc. Passenger comfort is applied as the criterion to assess which transition is actually is the best one. The 4-axle vehicle was also used to verify the results obtained using the 2-axle vehicle. Our results show that the traditionally used in a railway engineering transition—3rd degree parabola—which is not always the optimum curve. This fact is especially valid for the longest curves, with lengths greater than 150 m. For such cases, the transition curves similar to standard curves of 9th and 11th degrees is the optimum ones. This result is confirmed by the use of the 4-axle vehicle.

scholarly journals Method for assessing the influence of psychophysical state of drivers on control safety based on monitoring of vehicle movement parameters

2020 ◽  
Vol 50 ◽  
pp. 152-159
Author(s):  
Samuil Gorelik ◽  
Vladimir Grudinin ◽  
Vladislav Lecshinskiy ◽  
Evgeny Khaskelberg
Keyword(s):  
Movement Parameters ◽  
Vehicle Movement

scholarly journals A Methodology for Evaluating Driving Styles in Various Road Conditions

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3570
Author(s):  
Rafał S. Jurecki ◽  
Tomasz L. Stańczyk
Keyword(s):  
Detailed Analysis ◽  
Urban Traffic ◽  
Lateral Acceleration ◽  
Urban Road ◽  
The Road ◽  
Road Type ◽  
Movement Parameters ◽  
The Impact ◽  
The Given ◽  
Vehicle Movement

For many institutions, it is important to evaluate a given driving technique as safe or unsafe based on measurable vehicle movement parameters. The paper constitutes a part of studies aimed at establishing a method of parameter-based evaluation of drivers in various road conditions, in other words, to create a so-called ‘driver profile’. The tests were carried out on a 650 km route, on four varying road types. Longitudinal and lateral acceleration values are used to evaluate the driving style. An analysis is presented of the impact of the type and shape of road on acceleration values. The results demonstrate that the same driver, when driving the same vehicle on an expressway, an inter-urban road or in urban traffic, will move with various acceleration values. A detailed analysis of acceleration values and distributions was conducted. Interesting conclusions were drawn after excluding the so-called ‘smooth driving’ sections, by acceleration ranges of −0.5 to 0.5 m/s2 from the analysis. This allowed for the evaluation of the structure of other longitudinal and lateral acceleration values. After this modification, the distributions showed specificity for the given road type, thereby allowing the road type used by the vehicle’s driver to be recognized based solely on the distribution.

Analysis of movement of persons with disabilities during evacuation by lift

2020 ◽  
Vol 15 (1) ◽  
pp. 209-220
Author(s):  
Martin Szénay ◽  
Martin Lopušniak
Keyword(s):  
Computational Models ◽  
Persons With Disabilities ◽  
Entire Process ◽  
Injured Person ◽  
Impaired People ◽  
Movement Parameters ◽  
The Times ◽  
Mobility Impaired

Abstract Lifts are indispensable for the evacuation of mobility-impaired people from buildings in case of emergency. It is necessary to quantify the movement parameters of these people and describe the entire process using a suitable algorithm. The aim of the research was to quantify the times and speeds of movement for a person using a wheelchair and for an injured person. An experiment in situ was used. During the experiment, arrivals at the lift, cabin entries, and exits were monitored. The results include the times and speeds of a mobility-impaired person's movement. The experiments showed that a person using a wheelchair was slower than an injured person. The results can be used to expand computational models to account for the possibility of using lifts for evacuation.

Contemporary Methods of Designing Rail Vehicle Running Systems with the Use of CAD and CAM Solutions

2020 ◽  
Vol 64 (187) ◽  
pp. 75-80
Author(s):  
Tomasz Antkowiak ◽  
Marcin Kruś
Keyword(s):  
System Design ◽  
Preliminary Design ◽  
Support Design ◽  
Detailed Design ◽  
Final Shape ◽  
Rail Vehicle ◽  
Design Engineers ◽  
Running System ◽  
Cad Cam

The article discusses the process of designing the running system of a rail vehicle using CAD and CAM tools as the solutions supporting the process. It describes the particular stages of design taking its final shape: from a preliminary design, through a detailed design, ending with the stage of production. Each stage includes a presentation of how CAD and CAM tools are used to support design engineers in their practice. Keywords: running system, design, CAD, CAM

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