Bibliografías temáticas / Measuring wheelset

Índice

Artículos de revistas
Tesis
Capítulos de libros
Actas de conferencias

Literatura académica sobre el tema "Measuring wheelset"

Autor: Grafiati

Publicado: 10 de marzo de 2023

Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros

Elija tipo de fuente:

Consulte las listas temáticas de artículos, libros, tesis, actas de conferencias y otras fuentes académicas sobre el tema "Measuring wheelset".

Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.

También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.

Artículos de revistas sobre el tema "Measuring wheelset"

Glyuzberg, B. E. "Inﬂuence of the parameters of the car wheel ﬂanges on the safety operation in turnouts". Vestnik of the Railway Research Institute 77, n.º 2 (28 de abril de 2018): 67–76. http://dx.doi.org/10.21780/2223-9731-2018-77-2-67-76.

Texto completo

Resumen

The article study conditions for the passage of wheelsets along turnouts from the point of view of ensuring trafﬁc safety. The norms and tolerances for geometric dimensions in the “wheelset - rail gauge” system are interrelated. Proceeding from this interrelation, an analysis is performed on the probability of occurrence of adverse events in the passage through the turnouts of wheelsets having ﬂanges with different wear values. The thickness of the ﬂanges of the car wheels has a great inﬂuence on the safe passage by the rolling stock on the allocated switch point. When wheels is running on allocated point, disorders occurred in track gauge, tongue gapping to the stock rail, and in the case of frequent repetition of these phenomena - even bends and breaks in connecting rods directly threaten the safety of driving on turnouts. Within one article, it is impossible to consider all the features of the movement of rolling stock in turnouts. As an example, conditions for the passage of a wheelset through a frog unit are considered. It can be seen from the materials presented in the article that the current normative base of the geometric dimensions of the “wheelset - rail gauge” system is justiﬁed by the result of extensive and comprehensive scientiﬁc research. The experience of several decades of operation is conﬁrmed by the fact that this regulatory framework provides for the transportation process and the safety of the movement of trains in turnouts. Introduction of changes in the “wheelset - rail gauge” measuring system should be based on analysis of the actual state of wheel sets and the parameters of the track gauge in turnouts. In particular, in order to determine the possibility of changing the rejection size of the minimum thickness, it is necessary:• to conduct mass measurements of wheelsets and turnouts in operation; to perform processing of the obtained data with the identiﬁcation of dependencies between different combinations of sizes, including relations between the thickness of the ﬂange and the slope of its generatrix; to perform dynamic-strength tests to determine the dependence of stresses and deformations of the elements of the switches during the passage of wheelsets with different thicknesses and angles of inclination of the ﬂanges; to reveal the available opportunities for changes in the “wheelset - rail gauge” measuring system, taking into account the durability and reliability of switch points; to develop a new methodology for calculating the adverse events that occur during wheelsets passage along the turnouts.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Rahimov, Rustam, Anastasia Nekrasova, Larisa Ogorodnikova, Grigory Lisovsky, Dilfuza Zairova y Guldora Mustaeva. "Measuring scheme for determination of loads acting on the side frame of the bogie from a wheelset". E3S Web of Conferences 264 (2021): 05035. http://dx.doi.org/10.1051/e3sconf/202126405035.

Texto completo

Resumen

The study aims to develop a measuring circuit to determine the loads acting on the side frame of the bogie from the wheelset when the wagon is moving. The paper reviews and analyzes experimental methods for measuring the vertical and lateral forces acting on the side frame of the bogie from the wheelset when the wagon is moving. Theoretical studies of the stress-strain state of the side frame of a freight wagon bogie were carried out using the finite element method under the action of loads on the axle opening from the wheelset. As a result of theoretical studies by the finite element method, the places for the installation of strain gauges were determined, and a method for processing the received signals was selected. The developed measuring scheme makes it possible to determine the spatial force effect acting on the side frame of the bogie from the wheelset, which makes it possible, without increasing the number of measuring channels in the equipment, to reduce the number of strain gauges for measuring the considered loads while running dynamic tests. In addition, it improves the accuracy of measurements of vertical loads, with the help of which the coefficient of dynamic addition of unsprung parts of the bogie is calculated.

Los estilos APA, Harvard, Vancouver, ISO, etc.

GAYIPOV, Aziz B. "Influence of inaccuracies and measurement errors on frequency of uncoupling of cars for unscheduled repairs on the railways of the Republic of Uzbekistan". Proceedings of Petersburg Transport University 2021, n.º 4 (diciembre de 2021): 507–14. http://dx.doi.org/10.20295/1815-588x-2021-4-507-514.

Texto completo

Resumen

Objective: Considering the impact of inaccuracy and errors in measuring the thickness of the fl ange of wheelsets on the frequency of uncoupling for unscheduled repairs on the railways of the Republic of Uzbekistan. Conducting an analysis of the impact of uncoupling freight cars for unscheduled wheelset malfunctions repairs. Methods: Methods of combinatorial and statistical analyzes of the initial data are used. Results: A detailed analysis of car uncoupling for unscheduled repairs on the railways of Uzbekistan has been carried out. The probabilities of car uncoupling operation in TR-2 (current repair) due to the “thin fl angeˮ malfunction have been determined. The infl uence of inaccuracies and measurement errors on the frequency of uncoupling of cars for such a repair is estimated. Practical importance: The results obtained contribute to the deepening of knowledge about the possibility of the infl uence of inaccuracies and errors in measuring the thickness of the fl ange of wheelsets on the performance of cars.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Miyamoto, Masayuki, Hiroshi Fujimoto, Tadaomi Okabe y Eisaku Sato. "New Measuring Methods for Wheelset Angle of Attack of Railway Vehicle on Curves". JSME international journal. Ser. C, Dynamics, control, robotics, design and manufacturing 37, n.º 2 (1994): 292–99. http://dx.doi.org/10.1299/jsmec1993.37.292.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Chen, Yuejian, Zongyi Xing, Yifan Li y Zhi Yang. "Standard-wheel-based field calibration method for railway wheelset diameter online measuring system". Applied Optics 56, n.º 10 (24 de marzo de 2017): 2714. http://dx.doi.org/10.1364/ao.56.002714.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Bagheri, Vahid Reza, Parisa Hosseini Tehrani y Davood Younesian. "Optimal strain gauge placement in instrumented wheelset for measuring wheel-rail contact forces". International Journal of Precision Engineering and Manufacturing 18, n.º 11 (noviembre de 2017): 1519–27. http://dx.doi.org/10.1007/s12541-017-0180-7.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

MIYAMOTO, Masayuki, Hiroshi FUJIMOTO, Tadaomi OKABE y Eisaku SATO. "New Measuring Methods of Wheelset Angle of Attack of Railway Vehicle on Curves." Transactions of the Japan Society of Mechanical Engineers Series C 58, n.º 547 (1992): 780–87. http://dx.doi.org/10.1299/kikaic.58.780.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Zhang, Zhifeng, Chao Lu, Fangzhen Zhang, Yufen Ren, Kun Yang y Zhan Su. "A Novel Method for non-contact measuring diameter parameters of wheelset based on wavelet analysis". Optik 123, n.º 5 (marzo de 2012): 433–38. http://dx.doi.org/10.1016/j.ijleo.2011.04.023.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

HONDO, Takatoshi, Shoya KUNIYUKI, Takayuki TANAKA y Mitsugi SUZUKI. "Method for Measuring Lateral Force Utilizing Shear Strains inside Wheel Load Measuring Holes of Instrumented Wheelset". Quarterly Report of RTRI 63, n.º 2 (1 de mayo de 2022): 139–44. http://dx.doi.org/10.2219/rtriqr.63.2_139.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Aniszewicz, Andrzej. "FEM numerical analysis of the shape bow cross-section for the rigidity of the wheelset measuring device". Problemy Kolejnictwa - Railway Reports, n.º 182 (marzo de 2019): 107–13. http://dx.doi.org/10.36137/1821e.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Más fuentes

Tesis sobre el tema "Measuring wheelset"

Štěnička, Petr. "Stend pro analýzu přístroje k mazání okolků kolejových vozidel". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-229383.

Texto completo

Resumen

This work deals with construction of an experimental measuring stand. This stand will be used for research focused on wheel flange lubrication improvement. The construction is based on wheel flange lubrication system Tribotec OK-02. First part treats of rail vehicle dynamics and wheel flange lubrication problematics, second part describes construction itself.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Jensen, Emilie. "Measuring cost effectiveness of product wheels in food manufacturing". Thesis, Kansas State University, 2014. http://hdl.handle.net/2097/32786.

Texto completo

Resumen

Master of Agribusiness
Department of Agricultural Economics
Keith Harris
The focus of this research is to create a production schedule that will increase capacity while staying within business constraints of shelf life and warehouse space in a industrial food processing environment. The results support that product wheels maximize process responsiveness by lengthening production runs, and increasing safety stock inventory. In doing so, it maintains acceptable customer service levels and minimizes overtime costs. This study develops a model that simulates the relevant variables impacting the performance of the operation. The results show significant cost reductions are achieved by eliminating changeovers, increasing line capacity, safety stock levels protect against 99% of order variation, and warehouse space is available to house increased cycle stock and safety stock. Given the results on this line, I recommend expanding the model to other food processing locations within the business to further increase capacity and decrease overtime expenses.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Li, Hong. "Measuring systems for active steering of railway vehicles". Thesis, Loughborough University, 2001. https://dspace.lboro.ac.uk/2134/6790.

Texto completo

Resumen

This thesis studies measuring systems for active steering of railway vehicles. The aim of the study is to develop state estimation techniques to provide high integrity feedback variables for the active steering of railway vehicles. Practicality and provision of high-integrity data are two important aspects of the work. To avoid the use of expensive sensors and complex instrumentation, practical techniques for estimating vehicle variables are developed where only economical measurements are used and they can be easily implemented. The conventional solid-axle wheelset and wheelset with independently-rotating wheels are studied and their mathematical models are developed. The fundamental stability problem of these two models is analysed from a control engineering viewpoint for studies of actively-controlled wheelsets. The Kalman filters are then developed for these models to estimate all state variables, particularly variables of the wheelset relative to the track such as lateral displacement and yaw angle which are needed for active control. A number of sensing options are also identified, analysed for performance and assessed in a comparative sense. Fault detection and isolation schemes are then studied for the estimation techniques developed. Finally, some applications are considered. The techniques and analysis methods developed for the single wheel pair are extended and applied to a MKII coach and a two-axle railway vehicle. The estimation of cant deficiency for tilting trains is explored, and also the possibility of state estimation for a real profiled wheel.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Meruani, Azeem. "Tweel (TM) technology tires for wheelchairs and instrumentation for measuring everyday wheeled mobility". Thesis, Available online, Georgia Institute of Technology, 2007, 2007. http://etd.gatech.edu/theses/available/etd-04032007-174305/.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

MACHERELLI, MATTIA. "Analisi delle forze ruota-rotaia mediante sale montate strumentate. Progettazione e validazione sperimentale di sistemi basati su strumentazione estensimetrica". Doctoral thesis, 2017. http://hdl.handle.net/2158/1087514.

Texto completo

Resumen

L’analisi della interazione ruota-rotaia è di fondamentale importanza per comprendere la dinamica di marcia di un veicolo ferroviario. Sebbene gli strumenti di calcolo siano sempre più raffinati, grazie ai modelli del contatto ruota-rotaia quali quelli di Kalker ed all’uso massiccio dei solutori nel dominio del tempo di modelli multi-body, le normative ferroviarie prevedono comunque la misura in linea del comportamento del veicolo, ossia la misura contemporanea delle forze verticali Q e delle forze laterali Y delle ruote di un veicolo (tuttavia non prescrivono, come nel caso della EN 14363, alcun metodo particolare per la misura delle forze di contatto). A questi valori sono infatti correlati i parametri convenzionalmente utilizzati per definire il coefficiente di svio, dato dal rapporto Y/Q, e la forza di ripage, ossia la somma ΣY delle forze laterali delle due ruote di una sala, che è responsabile dello slineamento del binario secondo la formula di Prud’Homme. La caratterizzazione del contatto avviene mediante la conoscenza della risultante delle forze scambiate tra ruota e rotaia, la collocazione della sua retta di azione e l’identificazione dell’eventualità di contatti multipli. La misura può essere fatta da terra, per comprensibili motivi, solo in installazioni puntuali o comunque molto limitate ma risultano essere non rappresentative delle condizioni di marcia generiche di un rotabile. Il problema può essere risolto mediante l’uso di opportuni sistemi a bordo veicolo che impiegano sale montate strumentate. Tali sistemi sono progettati e realizzati per risultare il meno invasivi possibile. Non vi sono sistemi in grado di rilevare direttamente le forze di contatto ma la loro misura è sempre indiretta: le forze di contatto vengono determinate basandosi sull’effetto che queste hanno su particolari componenti del veicolo stesso. Ovviamente, essendo l’obiettivo quello di rilevare le forze di contatto scambiate tra ruota e rotaia, più prossimi a tale zona si resta, maggiori saranno gli effetti dovute a tali forze. Pertanto, strumentare la sala (ruote e/o assile) permette di ottenere un rapporto segnale/rumore (dove il segnale sono le forze di contatto) più elevato. Lo svantaggio di tale scelta consiste nel fatto che la sala ruota rispetto al veicolo ferroviario. È quindi richiesto un costoso sistema di telemetria per trasmettere i segnali, misurati a bordo sala, verso un sistema di acquisizione/elaborazione che tipicamente si trova a bordo veicolo. Va inoltre puntualizzato che, più prossimi si è alla zona dove tali forze vengono scambiate, più si risentono degli effetti locali ad elevata frequenza quali ad esempio le rugosità superficiali dei corpi a contatto, la loro geometria (profilo nuovo o usurato) nonché la posizione del punto di contatto. Le tecniche odierne utilizzano principalmente estensimetri elettrici a resistenza incollati sulla cartella e/o sull’assile e a partire dalle deformazioni elastiche misurate è possibile ricostruire, tramite un’opportuna calibrazione, le forze mutuamente scambiate al contatto ruota-rotaia. Al fine di utilizzare una sala montata come uno strumento di misura è necessario effettuarne una calibrazione preliminare. Durante questa fase forze note sono applicate alla sala e i segnali di uscita dei ponti estensimetrici, incollati sull’assile o sulle vele, sono acquisiti. Pertanto è possibile identificare la relazione matriciale tra il vettore delle forze applicate ed il vettore delle deformazioni misurate, con l’obiettivo di stimare le forze al contatto. Uno dei più grandi problemi, intrinseco a tale procedura, è l’influenza della componente laterale di forza sui segnali dei ponti dedicati alla misura della componente verticale e viceversa: la matrice di calibrazione non è diagonale ed il processo di inversione richiesto per stimare le forze in ingresso può essere mal condizionato, rendendo tale stima affetta da errori. Per limitare tale aspetto è stato progettato un nuovo banco di taratura, basato su un layout innovativo che permette di vincolare isostaticamente la sala da calibrare.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Bang, Lei Wen y 雷文邦. "The Wheels Six-Componet Force Sensor in Measuring the Loading of the Vehicles during driving". Thesis, 1999. http://ndltd.ncl.edu.tw/handle/82020640277056435809.

Texto completo

Resumen

碩士
逢甲大學
機械工程學系
87
The relevant measurement of the reacting loads on the wheels for a vehicle during driving is extremely important for the development and design of new vehicles. The measured reacting loads are used for the basis of dimensioning documentation and for control programs for uniaxial or multi-axial fatigue tests on components, assemblies and complete vehicles. They are also used for input data in numerical simulation for finite element analysis, for multi-body analysis, and for the investigation of the functional capability tests on breaks, gears, and handles . The purpose of this study is to design a wheel-shaped six-component force sensor and relevant data-acquisition as well as calibration components in order to directly measure and register the road loads on the wheel for a vehicle during driving. The dimensions of wheel-shaped force sensor manufactured by Aluminum alloy are determined by finite element analysis, which involving safety factor. Six Wheatstone full bridges with strain gages bonded on the elastic sensor body are employed for the acquisition of the six force and moment components. The wheel-shaped force sensors are then housed between the wheel rim and wheel disk. A slip ring uses to transmit the six signals from force sensor on the rotating wheel to the inside of the vehicle which data acquisition system placed. The six signals registered in the rotating wheel coordinate system can be converted to the vehicle coordinate system (reference coordinate system) by using the angular signal which can be obtained by employing an encoder. Every component force or moment measured from the wheel-shaped six-component force sensor and corresponding angle measured from encoder are input into the LabVIEW data acquisition software with analysis and process to precisely measure the reacting loads on the wheel.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Capítulos de libros sobre el tema "Measuring wheelset"

Trojnacki, Maciej, Przemysław Dąbek, Janusz Kacprzyk y Zenon Hendzel. "Trajectory Tracking Control of a Four-Wheeled Mobile Robot with Yaw Rate Linear Controller". En Recent Advances in Automation, Robotics and Measuring Techniques, 507–21. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-05353-0_48.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

P. Boronenko, Yuri, Rustam V. Rahimov y Waail M. Lafta. "New Approach Measuring the Wheel/Rail Interaction Loads". En Railway Transport Planning and Management [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.100031.

Texto completo

Resumen

This chapter suggested new methods for monitoring the dynamic processes of rolling stock/rail interaction. This study develops a new technical solution for measuring the wheel/rail interaction forces on a significant part of the sleeper. The theoretical part of this study, using FEM, confirm the ability of piecewise continuous recording of vertical and lateral forces from the wheel/rail interaction by measuring the stresses in two sections of the rail. Also, the optimum location of strain gauges and the effective length of the measuring zone have been determined. The experimental part of this study has been carried out on the stands and the railway track to confirm the effectiveness of the method to determine the vertical and lateral wheel/rail interaction forces, increase the reliable statistical data, improve the measurement accuracy, reducing the time and cost compared with current testing methods. The developed method is recommended to determine the wheel/rail interaction forces and identify defects on the wheels when diagnosing rolling stock on operational and travel regimes.

Los estilos APA, Harvard, Vancouver, ISO, etc.

"Advances in Fish Tagging and Marking Technology". En Advances in Fish Tagging and Marking Technology, editado por Keith van den Broek, Jason J. Smith y Guy Wade. American Fisheries Society, 2012. http://dx.doi.org/10.47886/9781934874271.ch7.

Texto completo

Resumen

Abstract.—A feasibility study was begun in 2005 to obtain annual escapement information for sockeye salmon Oncorhynchus nerka over a minimum 3 years, using fish wheels and mark–recapture techniques already employed for Chinook salmon Oncorhynchus tshawytscha since 2001. Failed trials using both traditional spaghetti tags and injected PIT tags led to development of a new type of dorsal tag which which encapsulates a 134.2 KHz PIT tag in the marker of a 70 mm dual-anchor T-Bar tag. This tag was first employed in 2007 to estimate the inriver abundance of Chinook and sockeye salmon returning to the Copper river. For the first sample event, up to three live-capture fish wheels were operated at Baird Canyon for a total of 4,495 h from 18 May to 6 August. During this period, 4,456 adult Chinook salmon and 11,027 adult sockeye salmon were marked. For the second sample event, up to two fish wheels were operated at Canyon Creek near the lower end of Wood Canyon for 3,717 h from 28 May to 19 August. A total of 4,192 Chinook salmon and 56,5511 sockeye salmon were examined for marks. Of these, 459 Chinook salmon and 521 sockeye salmon were recaptures. Using a temporally stratified Darroch estimator, abundance of Chinok salmon measuring 500 mm FL or greater than migrated upstream of Baird Canyon from 18 May to 6 August was 46,349 (SE = 3,283). Using a similar estimator, estimated abundance of sockeye salmon that migrated upstream of Baird Canyon from 18 May to 6 August was 1,290,591 (SE = 92,590). This was the first ever defensible escapement estimate derived for sockeye salmon on the Copper River, and the fifth straight year for Chinook salmon with similar data quality to previous years using traditional spaghetti tags.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Colby, Jason M. "A Boy and His Whale". En Orca. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190673093.003.0010.

Texto completo

Resumen

It was february 1966, and Richard Stroud had seal sex on his mind. A recent graduate of Oregon State University, the Portland-born Stroud had taken a job at the Marine Mammal Biological Laboratory in Seattle. For one of his first field assignments, he had come to Morro Bay to study the reproduction of northern fur seals in their wintering area off the California coast. The primary focus of the lab, which was still administered by the US Fish and Wildlife Service, remained the fur seal harvest on the Pribilof Islands, and its scientists retained close ties to US whaling firms, often chartering their vessels for research. For this seventy-day expedition, Stroud and his colleagues hired the 136-foot whaler Lynnann for the purpose of shooting and dissecting five hundred fur seals under the terms of the 1957 treaty. Stroud also had instructions to kill and examine killer whales when possible. So when the Lynnann passed six orcas off Morro Bay just before noon on February 12, he asked Captain Roy J. “Bud” Newton to follow them. Ordinarily, Newton wouldn’t have bothered with killers. His employer, the Del Monte Fishing Company, focused on fin, sperm, and humpback whales. Located in Richmond, a short drive from Berkeley, the station processed nearly two hundred whales per year. But the whaling season was months away, and the US government was paying for this voyage. Newton wheeled the Lynnann around, and after an hour-long chase, his crew harpooned and killed a large male killer whale. Measuring just under twenty-one feet, it was a healthy specimen, though its teeth seemed unusually worn. Stroud planned to examine the orca’s stomach contents and send its skull and organs to the Seattle lab. Yet he chose not to dissect the carcass in port. Instead, as one reporter explained, Stroud and his fellow researchers “planned to butcher their killer whale Sunday while far out at sea.” The reasons for this decision are unclear. Perhaps they hoped to spare Morro Bay residents the stench of orca innards.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Tverdokhlib, Ihor y Yurii Polievoda. "THE INFLUENCE OF PARAMETERS OF RUNNING SYSTEMS AND THEIR SUSPENSION ON THE SAFETY OF OPERATORS OF MOBILE MACHINES AND ENERGY EQUIPMENT". En Modernization of research area: national prospects and European practices. Publishing House “Baltija Publishing”, 2022. http://dx.doi.org/10.30525/978-9934-26-221-0-13.

Texto completo

Resumen

The scientific work is based on the tasks of applied research on initiative topics on the topic: «Substantiation of parameters and modes of interaction of the drive wheel with the soil», state registration number 0117U006833. The authors’ research is aimed at solving current problems of vibrational vibrations on the operators of technological means. All machines and mechanisms used by man in production and in everyday life are sources of various mechanical measurements and, accordingly, hazards. Of all the types of hazards caused by mechanical influences, vibration is the most dangerous for humans. It is human physiology that contributes to the negative effects of vibration. Due to the fact that the human body consists of hard bones, soft muscles, joints, various internal organs, it can be considered as a complex oscillatory system, the mechanical reaction of which depends on the parameters of vibration. At high frequencies (less than 2 Hz), the body responds to total vibration like a hard mass. At higher frequencies, the body responds as an oscillating system with one or more degrees of freedom. This is manifested in resonance increases in the oscillations of individual organs of the body at certain frequencies. It is for the sitting body position (in which the mobile operator is most of the time) that the resonance is at a frequency of 4-6 Hz.One of the most effective ways to reduce the negative impact of vibrational vibrations on the operator is to reduce the oscillations in the source of their occurrence, as well as the path of propagation from source to operator. This can be partially achieved, including the choice of rational pressure in the wheels of the vehicle, as well as high-quality and timely diagnosis of its individual components and units. This work is devoted to these important issues, and therefore its relevance is beyond doubt.In the scientific work the question of influence of a condition of a basic surface and geometrical parameters of a wheel of a tractor on speed of its movement and frequency of vibration fluctuations which arise at it is investigated. This issue is of considerable theoretical and practical importance, because the road and wheel oscillations caused by road irregularities cause a significant deterioration in the performance of the tractor. These issues have been studied by a number of researchers, but they have varied narrowly. That is why the task was to consider more deeply the connection between the state of the wheel and the coating with the parameters of vibration oscillations that occur during movement. In theoretical studies, the relationship between the length of the wheel chords and the irregularities between the two points of contact of the wheel was established. The support surface equation was represented by a sinusoid with a variable amplitude coefficient. Depending on the ratio of the radius of the wheel and the geometric dimensions of the protrusions and depressions of the support surface, two groups of equations were obtained that describe the parameters of vibrational oscillations. The results of analytical studies were illustrated by the corresponding geometric relationships. To verify the theoretical references, experimental studies were conducted with a system for measuring the parameters of vibration oscillations of controlled axles of wheeled agricultural tractors. The study was performed on two variants of the road surface. The results of experimental research are presented graphically in the form of oscillograms of vibration acceleration of the controlled axle of the tractor, as well as in tabular form. Theoretical and experimental studies show that there is an inverse relationship between the value of the wheel radius and the parameters of vibrational oscillations. As the translational speed of the tractor increases, the parameters of vibration oscillations also increase. The aim of the work is to reduce the negative impact of vibration load on the operator of a mobile vehicle by substantiating the rational parameters of the wheel and determining the location and method of diagnosing its individual components and units. To achieve this goal you need to perform the following tasks: determine the causes of injuries in the operation of mobile vehicles; to analyze the harmful effects of vibration oscillations on the mobile operator; identify ways to reduce vehicle vibrations; to carry out mathematical formalization of the process of oscillations of the operator’s workplace; to build a mathematical model of oscillations of the system «road – vehicle – operator».In this research we used research methods to determine theoretical data based on mechanical and mathematical modeling of the interaction of elastic propulsion and curved support surface using the basic principles of theoretical mechanics and higher mathematics.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Actas de conferencias sobre el tema "Measuring wheelset"

Jimin, Zhang, Wan Jingyuan, Li Wen, Zhong Xujie, Zhou Hechao, Qi Yuan y Hou Chuanlun. "Research on Simulation of Resilient Wheel Dynamometer". En 2020 Joint Rail Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/jrc2020-8069.

Texto completo

Resumen

Abstract Among many testing items of infrastructure, wheel-rail force is an important factor that causes track failure, damage, train derailment and vehicle parts damage. It is also used to evaluate the ride stability, safety and as the main basis for speed limit and speed increase. Among many methods of wheel-rail force detection, the method of wheel-rail force measurement is the most accurate and direct method of wheel-rail force measurement. The method of measuring wheel-rail interaction force using wheelset of railway locomotive and rolling stock as force sensor has the highest accuracy among all wheel-rail force measurement methods. Force-measuring wheelset is the core sensor in the dynamic test research of railway vehicles, and its performance directly affects the evaluation results of the tested objects. Before the actual line test, it is necessary to calibrate the dynamometer wheelset on the test bench. The calibration of dynamometer wheelset is an important link in the research and application of dynamometer wheelset. With the rapid development of rail transit in various countries and the great improvement of locomotive and rolling stock manufacturing technology, higher and higher requirements has been put forward for the performance of force-measuring wheelsets, which are mainly embodied in obtaining ideal sensitivity and linearity, minimizing cross-interference and all kinds of possible external interference, and reducing the influence of the change of the position of the action point on the measurement results. For the rigid wheelset, the calibration of the force-measuring wheelset is basically perfect from the actual production to the algorithm. The relevant countries also determine the calibration in the standard form. At present, more and more urban rail low floor vehicles are using independent resilient wheels. The mechanical structure of the bogie with resilient wheels is complex. At the same time, because of the small diameter of the resilient wheels and the rubber layer between the wheel hoop and the wheel center, it is difficult to find the strain/stress sensitive area accurately, as well as the unique installation process, the calibration of resilient wheels is rather difficult. This paper takes the low floor resilient wheels as the research object, and studies how to make the calibration method of high precision and suitable for the independent rotating wheels of resilient wheels and the processing and analysis of calibration data. The main research contents are as follows: the development of force-measuring wheelset which is based on the finite element simulation of a resilient wheel, stress distribution analysis, and the fabrication scheme of force-measuring wheelset which meets the requirement of test accuracy is proposed by using virtual bridge formation.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Duan, Jiaxu, Lin Luo, Jinlong Li, Xiaorong Gao y Wen Zhang. "Measuring of train wheel surface defect based on linear CCD imaging". En 2016 18th International Wheelset Congress (IWC). IEEE, 2016. http://dx.doi.org/10.1109/iwc.2016.8068369.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Jinlong, Li, Duan Fan, Luo Lin y Gao Xiaorong. "Wheel profile and tread surface defect detection based on phase measuring profilometry". En 2016 18th International Wheelset Congress (IWC). IEEE, 2016. http://dx.doi.org/10.1109/iwc.2016.8068370.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Matsumoto, Akira, Yasuhiro Sato, Hiroyuki Ohno, Masao Tomeoka, Kosuke Matsumoto, Jun Kurihara, Tomohisa Ogino et al. "A New Measuring Method of Wheel-Rail Contact Forces". En ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-84682.

Texto completo

Resumen

A new measuring method introduced in this paper can measure contact forces between wheel and rail without special wheelsets with slip rings or telemeters. In this method the lateral contact force is measured from the lateral distortion of wheel measured by several non-contact gap sensors. The measured values are small, but accurate value of lateral force can be calculated by the compensation of axial movement and inclination of wheelset. Normal and longitudinal contact forces are also measured from the strain of parts of the truck except wheelsets. According to the results of full-size truck stand tests and train running tests, we have verified that the new method has sufficient accuracy of measuring compared with conventional methods.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Zhang, Shuang, Hua Wang, Jin-gang Gao, Xiao-feng Liu y Wen-dong Chen. "Measuring method of Radial Run Out of High Speed Railway Wheelset". En 2020 10th Institute of Electrical and Electronics Engineers International Conference on Cyber Technology in Automation, Control, and Intelligent Systems (CYBER). IEEE, 2020. http://dx.doi.org/10.1109/cyber50695.2020.9279181.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Nagode, C., M. Ahmadian y S. Taheri. "Axle Generator for Freight Car Electric Systems". En 2012 Joint Rail Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/jrc2012-74069.

Texto completo

Resumen

As the desire to implement more electronic devices such as measuring or tracking systems on freight cars grows, having a source of power to rely on becomes an issue. An innovative and practical solution to keep batteries charged is presented. Placed on the car axle, the system uses the rotation of the wheelset as input motion. Friction wheels roll on the outside of the car axle, transferring the power to a generator through a set of gears. Designed to be easily implemented, the system can be installed or removed conveniently and quickly. The first laboratory tests showed that the system is capable of producing more than 100 Watts of power at a simulated 55 mph. A speed of only 20 mph is necessary to generate voltages high enough to charge a 12-Volt battery. A second series of tests proves that connecting the generator differently (in a “Y” configuration) improves the output voltages by about 70%, generating three times more power and requiring only 10mph to reach the voltage necessary for charging a common lead-acid battery.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Zhang, Zhifeng, Shuangyun Shao y Zhan Gao. "A Novel Method on Wheelsets Geometric Parameters on Line Based on Image Processing". En 2010 International Conference on Measuring Technology and Mechatronics Automation (ICMTMA 2010). IEEE, 2010. http://dx.doi.org/10.1109/icmtma.2010.58.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Ren, Hong-ge, Xiao-gang Ruan y Xin-yuan Li. "Bionic Self-Learning of Two-Wheeled Robot Based on Skinner's Operant Conditioning". En 2009 International Conference on Measuring Technology and Mechatronics Automation. IEEE, 2009. http://dx.doi.org/10.1109/icmtma.2009.55.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Yingzhong Tian, Liangyin Jiang, Li Ming y He Bin. "LabVIEW and CRIO Linear Control of a Coaxial Two-wheeled Mobile Robot". En 2011 International Conference on Measuring Technology and Mechatronics Automation (ICMTMA). IEEE, 2011. http://dx.doi.org/10.1109/icmtma.2011.402.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Groves, Patricia, Philip Conroy, Leonid Belostotski y Michal Okoniewski. "Measuring antenna noise parameters using a set of Wheeler caps". En 2016 10th European Conference on Antennas and Propagation (EuCAP). IEEE, 2016. http://dx.doi.org/10.1109/eucap.2016.7481866.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Ofrecemos descuentos en todos los planes premium para autores cuyas obras están incluidas en selecciones literarias temáticas. ¡Contáctenos para obtener un código promocional único!