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Dissertations / Theses on the topic 'Tracked vehicle'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Kotb, Ata Wael Galal Mohamed. "Intelligent control of tracked vehicle suspension." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/intelligent-control-of-tracked-vehicle-suspension(00b9d080-2e1b-4634-89ec-061ab5899b76).html.

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Vibrations caused by rough road excitations influence tracked vehicle dynamic performance. Good capabilities of such vehicles like high mobility, manoeuvrability and comfort are guaranteed by optimal suspension systems. The suspension systems of tracked vehicles are exposed to extreme operating conditions. This creates a conflict between ride comfort and handling that is even greater than the conflict between ride comfort and handling for general road vehicles. Tracked vehicles must be able to traverse not only rough roads but also smooth terrains. The challenges in developing an optimized sus

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2

Karlén, Anton. "RC-TMV : Remote Controlled Tracked Multipurpose Vehicle." Thesis, KTH, Mekatronik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-295799.

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This project seeks to design and construct a track-driven radio controlled vehicle and controller. The purpose is to research if radio can be effectively used to control the robot remotely, as well as research to what extent a tracked design increases the mobility when compared to a wheel-design. The prototype consists of two parts: Vehicle and controller. The vehicle is track-driven with two DC-engines connected by H-bridge. A receiver is fitted to the vehicle. The controller consists of two joysticks, a linear potentiometer as well as a transmitter. Testing was performed by driving the vehic

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3

Johnson, Christopher Patrick. "Comparative Analysis of Lightweight Robotic Wheeled and Tracked Vehicle." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/76994.

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This study focuses on conducting a benchmarking analysis for light wheeled and tracked robotic vehicles. Vehicle mobility has long been a key aspect of research for many organizations. According to the Department of Defense vehicle mobility is defined as, "the overall capacity to move from place to place while retaining its ability to perform its primary mission"[1]. Until recently this definition has been applied exclusively to large scale wheeled and tracked vehicles. With new development lightweight ground vehicles designed for military and space exploration applications, the meaning of veh

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Kanarat, Amnart. "Modeling and Simulation of a Multi-Unit Tracked Vehicle." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/9755.

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A multi-unit tracked vehicle such as a continuous haulage system is widely used in underground mining applications due to its high mobility and payload capacity on rugged and soft terrain. To automate such a system, a high fidelity model of a tracked vehicle is essential in designing a controller for each tracked vehicle in the system, and a system model is required to simulate its response to input commands. This thesis presents the 2-D mathematical models of a tracked vehicle and a multi-unit tracked vehicle. All existing track-terrain interaction models are investigated and modified. By emp

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Kirimlioglu, Serdar. "Multisensor Dead Reckoning Navigation On A Tracked Vehicle Using Kalman Filter." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614939/index.pdf.

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The aim of this thesis is to write a multisensor navigation algorithm and to design a test setup. After doing these, test the algorithm by using the test setup. In navigation, dead reckoning is a procedure to calculate the position from initial position with some measured inputs. These measurements do not include absolute position data. Using only an inertial measurement unit is an example for dead reckoning navigation. Calculating position and velocity with the inertial measurement unit is highly erroneous because, this calculation requires integration of acceleration data. Integration means

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Wang, Kun. "Dynamic analysis of a tracked snowplowing vehicle and assessment of ride quality." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0007/MQ39481.pdf.

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7

Keese, William. "A Remotely Operated Multi-Tracked Vehicle for Subterranean Exploration of Gopher Tortoise Burrows." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3179.

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The gopher tortoise is a land tortoise living in the southeastern United States. It is a species in decline and is listed as threatened or endangered in six different states. The gopher (as commonly referred) digs burrows that it uses for many reasons and spends most of its time underground. Problems occur when trying to estimate a population because a gopher tortoise digs more than one burrow. This thesis demonstrates an innovative way to survey and investigate a gopher tortoise burrow hole by using a multi-tracked remotely operated vehicle. The vehicle carried two cameras (fore and aft) and

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Sebastian, Bijo. "Traversability Estimation Techniques for Improved Navigation of Tracked Mobile Robots." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/94629.

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The focus of this dissertation is to improve autonomous navigation in unstructured terrain conditions, with specific application to unmanned casualty extraction in disaster scenarios. Robotic systems are being widely employed for search and rescue applications, especially in disaster scenarios. But a majority of these are focused solely on the search aspect of the problem. This dissertation proposes a conceptual design of a Semi-Autonomous Victim Extraction Robot (SAVER) capable of safe and effective unmanned casualty extraction, thereby reducing the risk to the lives of first responders. In a

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9

Saidane, Chiheb. "Decision support system for the management of an Army's tracked and wheeled vehicle fleet." Thesis, Monterey, Calif. : Naval Postgraduate School, 2007. http://bosun.nps.edu/uhtbin/hyperion.exe/07Mar%5FSaidane.pdf.

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Thesis (M.S. in Computer Science)--Naval Postgraduate School, March 2007.<br>Thesis Advisor(s): Man-Tak Shing, Arijit Das. "March 2007." Includes bibliographical references (p.85-86). Also available in print.

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Mezacasa, Nathan. "Metodologia para simulação dinâmica e otimização de veículos de esteira." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2018. http://hdl.handle.net/10183/179570.

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Devido as severas condições as quais veículos militares blindados de esteira são submetidos, o desenvolvimento de modelos que representam o comportamento dinâmico destes veículos torna-se imprescindível, para além da possibilidade de avaliação das intensidades das vibrações ocorrendo na cabine, ser possível criar veículos que tenham vantagens na mobilidade, fator esse que engloba tanto a transposição de obstáculos, como a rodagem em condições menos severas, e por fim, no tempo e na exatidão dos disparos, afetada pelas respostas dinâmicas que o veículo fornece. Para ser possível encontrar um ve

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Rose, Michael Scott. "Design of a Helicopter Deployable Ground Robotic System for Hazardous Environments." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/31150.

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The use of robotics in hazardous environments is becoming more common, where autonomy can handle the dull, dirty and dangerous jobs that humans have previously supported. This thesis focuses on the design of a helicopter deployable unmanned ground vehicle for use in hazardous environments, and presents the benefits of heterogeneous unmanned vehicle teams for operation in beyond line-of-site hazardous environments. <br /> <br /> The design of a ground robot that is capable of being flown on the undercarriage of a Yamaha RMAX unmanned air vehicle is presented. The robot is size, weight, and po

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Hallbeck, Viktor. "System modelling and evaluation of main battle tank fire precision." Thesis, KTH, Fordonsdynamik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302278.

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This master thesis describes a study of the main battle tank dynamics in order to investigate the fire precision when a tank is driving in terrain. A model has been developed to simulate the dynamic interaction between the tank's hull and the ground irregularity in MATLAB and SIMULINK through the modelling of the tank's dynamics. Two different models of suspension system have been analysed. One linear model and one hydro-pneumatic model. Further the contribution from the cannon's recoil has been modelled to investigate its contribution to the dynamics of the vehicle. The models developed are o

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13

Gower, Daniel W. "Speech intelligibility in tracked vehicle and pink noise under active noise reduction and passive attenuation communications headsets /." This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-06062008-170444/.

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Pawlowski, Daniel F. "Tracking Dynamic Obstacles in a Structured Urban Environment and Subsequent Decision Making for an Autonomous Ground Vehicle." Case Western Reserve University School of Graduate Studies / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=case1213804587.

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Gothing, Grant Edward. "Development of the "Discretized Dynamic Expanding Zones with Memory" Autonomous Mobility Algorithm for the Nemesis Tracked Vehicle Platform." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/34404.

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<p>The Nemesis tracked vehicle platform is a differentially driven Humanitarian Demining tractor developed by Applied Research Associates, Inc. The vehicle is capable of teleoperational control and is outfitted with a sensor suite used for detecting and neutralizing landmines. Because the detection process requires the vehicle to travel at speeds less than 0.5 km/h, teleoperation is a tedious process. The added autonomous capabilities of waypoint navigation and obstacle avoidance could greatly reduce operator fatigue.</p><p> ARA chose to leverage Virginia Tech's experience in developing an

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Pattumma, Klairoong. "VEGETATION STRUCTURE, LIGHT AVAILABILITY, AND SEDIMENT DEPOSITION WITHIN SINKHOLE BUFFERS ASSOCIATED WITH TRACKED AND WHEELED VEHICLE TRAINING AT FORT KNOX, KENTUCKY." OpenSIUC, 2011. https://opensiuc.lib.siu.edu/theses/691.

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Heavy wheeled and tracked vehicle training has been conducted on portions of the landscape of Fort Knox, Kentucky for approximately 60 years. Fort Knox is located on the Kentucky Karst Plain and sinkholes are dominant features of this area. Sinkholes and karst terrain present an atypical problem in combination with this unique land use, potentially impacting downstream and local terrestrial environment. A study of the training area sinkhole complex was conducted as a first step toward mitigating the impact of military activities and reduces potential problems of sedimentation and water qual

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Andersson, Tobias. "Elhybridteknik i bandvagnssystemet : Den militära nyttan i logistikfunktionen." Thesis, Försvarshögskolan, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-4709.

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Fossila bränslen är ändliga resurser och FMV menar i sin Tekniska Prognos 2013 att Försvarsmakten redan nu bör planera för en omställning till alternativa tekniker till dagens förbränningsmotor. Den teknik som verkar mest lämplig som interimslösning mellan framtidens vision om ren eldrift och förbränningsmotorn är elhybridteknik. Uppsatsen undersöker hur Försvarsmaktens logistikfunktion påverkas om bandvagnssystemet skulle övergå till seriehybridteknik. Uppsatsens ansats är kvalitativ med en kombination av textstudier, intervjuer samt ett frågeformulär som besvaras av totalt tre personer förde

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Eriksson, Linus. "Motorbyte BV206 : Utredning och rekommendation." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-59659.

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Scandinavian Terrain Vehicles AB (STV) konstruerar och bygger bandvagnar för civilt bruk. I utbudet ingår även vad STV kallar Mid Life Improvement (MLI) vilket syftar i att renovera Hägglunds BV206. En del av MLI-programmet är byte av motor och växellåda där de gamla komponenterna från sent 80-tal till tidigt 90-tal byts ut mot ny motor och växellåda. Den nya kombinationen av motor och växellåda möter militär standard och blir därför en onödigt kostsam del då många av STV:s kunder skulle vara nöjda även med ett enklare alternativ. För att minska kostnaden för MLI-programmet och därmed potentie

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Valík, Michal. "Návrh mobilního robotu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318858.

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This diploma thesis deals with design of machinware of mobile robot. The purpose of this work is to design complete technical product documentation for manufacturing of a prototype. In first theoretical part of this thesis there is an analysis of contemporary situation of mobile robots. In second practical section, there is a design of all needed mechanical parts for tracked vehicle, all needed calculations are included. Diploma thesis contains hazard analysis, complete technical product documentation with 3D model included and final price statement.

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Зыонг, Ши Хиеп. "Улучшение управляемости быстроходных гусеничных машин за счет установки электромеханических механизмов поворота". Thesis, НТУ "ХПИ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/22688.

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Диссертация на соискание научной степени кандидата технических наук по специальности 05.22.02 – автомобили и тракторы. – Национальный технический университет "Харьковский политехнический институт". – Харьков, 2016. Диссертация посвящена решению научно-прикладной задачи разработки научно обоснованных технических решений, позволяющих для быстроходных гусеничных машин (БГМ) предыдущего поколения с двухпоточными механическими ступенчатыми механизмами передач и поворота (МПП) с минимальными затратами добиться плавного управляемого изменения радиуса поворота от свободного до фиксированного с рекупе

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Зионг, Ші Хіеп. "Покращення керованості швидкохідних гусеничних машин за рахунок встановлення електромеханічних механізмів повороту". Thesis, НТУ "ХПІ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/22687.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.22.02 – автомобілі та трактори. – Національний технічний університет "Харківський політехнічний інститут". – Харків, 2016. Дисертація присвячена вирішенню науково-практичної задачі розробки науково обґрунтованих технічних рішень, що дозволяють для гусеничних машин попереднього покоління з двопотоковими механічними ступінчастими механізмами передач і повороту з мінімальними витратами домогтися плавної керованої зміни радіуса повороту від вільного до фіксованого з рекуперацією енергії гальмування. Запропонован

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Vogel, Alexander. "Energy Usage of Personal Rapid Transit Systems : Simulation of the SkyCab Concept." Thesis, KTH, Spårfordon, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-180037.

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Den globala situationen för person- och godstransporter visar att energianvändningen inom transportsektorn stadigt ökar och prognoser tyder på att den kommer att fördubblas till 2050. Den största ökningen förväntas ske i Asien där, Kina kommer att stå för över 12 % av den globala energianvändningen år 2050. Inom EU, Europeiska Unionen, stod personbilarna 2012 för över 81 % av passagerartransporterna räknat i antal passagerarkilometrar. Nya energieffektiva och miljövänliga transportlösningar behöver utvecklas. En lösning med spårtaxi kombinerar fördelarna med konventionella vägtransportsystem (

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Peterson, Jeremy. "Directional control of a tracked machine utilizing a dual-path hydrostatic transmission /." free to MU campus, to others for purchase, 2003. http://wwwlib.umi.com/cr/mo/fullcit?p1418057.

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Chiang, Chi-Feng. "Handling characteristics of tracked vehicles on non-deformable surfaces." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0018/MQ48517.pdf.

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Chiang, Chi-Feng Carleton University Dissertation Engineering Mechanical and Aerospace. "Handling characteristics of tracked vehicles on non-deformable surfaces." Ottawa, 1999.

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Hawari, Haitham M. "Minimising track degradation through managing vehicle/track interaction." Thesis, Queensland University of Technology, 2007. https://eprints.qut.edu.au/16366/1/Haitham_Hawari_Thesis.pdf.

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The rate at which a railway track deteriorates depends on the response of the track under different static and repeated dynamic forces. These wheel/rail forces lead to imperfections in the rail surface and deviation in track geometry alignment. The wheel/rail forces are dependent upon the quality of maintenance of the characteristics of both train and track. If train components such as wheelsets and suspensions are maintained to a high standard, less dynamic forces are generated at the wheel/rail interface and less damage is caused over time. Therefore, the amount and cost

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Hawari, Haitham M. "Minimising track degradation through managing vehicle/track interaction." Queensland University of Technology, 2007. http://eprints.qut.edu.au/16366/.

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The rate at which a railway track deteriorates depends on the response of the track under different static and repeated dynamic forces. These wheel/rail forces lead to imperfections in the rail surface and deviation in track geometry alignment. The wheel/rail forces are dependent upon the quality of maintenance of the characteristics of both train and track. If train components such as wheelsets and suspensions are maintained to a high standard, less dynamic forces are generated at the wheel/rail interface and less damage is caused over time. Therefore, the amount and cost of maintenanc

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White, Darris L. "Statistical Characterization of Vehicle and Track Interaction Using Rail Vehicle Response and Track Geometry Measurements." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36835.

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This study evaluates the dynamic interaction between rail vehicles and the track on which they travel. The measurements were analyzed in the time and frequency domain. The effects of external parameters such as the vehicle design, subgrade stiffness, and degree of curvature were analyzed and compared for both the vehicle response and the track geometry data. This study was conducted in close cooperation with the Transportation Technology Center, Inc. (TTCI) in Pueblo, Colorado. The track and vehicle response data was collected on the High Tonnage Loop at TTCI over a span of approximately te

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Bodin, Anders. "Improving the mobility performance of tracked vehicles in deep snow /." Luleå : Luleå tekniska univ, 2002. http://epubl.luth.se/1402-1544/2002/10/index.html.

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Kasim, Salim Y. "Ride Analysis For Suspension System of off-Road Tracked Vehicles." Thesis, Cranfield University, 1991. http://dspace.lib.cranfield.ac.uk/handle/1826/4664.

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In this work. an attempt has been made to develop a programming package for ride analysis of off-road vehicles based upon a finite-element formulation of vehicle suspension systems. Mathematical modelling of generalised suspension systems has been carried out with several non-linear aspects being investigated and implemented in the programming package. such as large deflection. non-linear characteristics of springs and dampers. bump stops and wheel separation. Different types of soi 1 have been considered together with an appropriate modelling of vehicle tracks. Several methods for time integr

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Lee, Sang Uk S. M. Massachusetts Institute of Technology. "Robust motion planning for autonomous tracked vehicles in deformable terrain." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/106779.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2016.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 90-95).<br>Ensuring the safety of autonomous vehicles during operation is a challenging task. Numerous factors such as process noise, sensor noise, incorrect model etc. can yield uncertainty in robot's state. Especially for tracked vehicles operating on rough terrain, vehicle slip due to vehicle terrain interaction affects the vehicle system significantly. In such cases, the motion planning of the autonomous vehi

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Chaar, Nizar. "Wheelset Structural Flexibility and Track Flexibility in Vehicle-Track Dynamic Interaction." Doctoral thesis, Stockholm : Farkost och flyg, Kungliga Tekniska högskolan, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4345.

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Tappe, Jack A. "Development of star tracker system for accurate estimation of spacecraft attitude." Thesis, Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Dec/09Dec%5FTappe.pdf.

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Thesis (M.S. in Astronautical Engineering)--Naval Postgraduate School, December 2009.<br>Thesis Advisor(s): Kim, Jae Jim ; Agrawal, Brij N. "December 2009." Description based on title screen as viewed on January 26, 2010. Author(s) subject terms: Star tracker, Planar triangles, Angle method, Spherical triangle, Quaternion estimator, Least-squares (QUEST), TRIAD Includes bibliographical references (p. 87-88). Also available in print.

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Hunt, Geoffrey A. "Dynamic analysis of railway vehicle/track interaction forces." Thesis, Loughborough University, 1986. https://dspace.lboro.ac.uk/2134/7492.

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Methods of predicting the dynamic forces are developed for the cases of vehicles negotiating vertical and lateral track irregularities. The bounds of validity of various models of the track are evaluated, from single degree of freedom, lumped parameter models to the case of a two layered beam on elastic foundation with a moving dynamic load. For the case of the lateral response of a vehicle negotiating a track switch, a finite element model of the track is also developed. The vehicle model developed for-the vertical case contains all the rigid body modes of a four axle vehicle for which primar

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WILKENS, J. T. "Vehicle Track Sensing Based on Radio Tomographic Imaging." Universidade Federal do Espírito Santo, 2016. http://repositorio.ufes.br/handle/10/9672.

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Made available in DSpace on 2018-08-02T00:01:12Z (GMT). No. of bitstreams: 1 tese_8764_Dissertation Jarmo.pdf: 2742692 bytes, checksum: 6fce8b1722ed9c65383695662ed2eb8e (MD5) Previous issue date: 2016-03-04<br>O aumento da quantidade de veículos nas estradas faz com que engarrafamentos representam um problema global crescente. Monitoramento do tráfego é tarefa crucial para o melhoramento do ﬂuxo de tráfego. O foco desta dissertação de Mestrado está na proposta e no desenvolvimento de uma metodologia para a estimativa em tempo real de ocupação e velocidade de um ou dois veículos em um

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Leiviskä, Albin. "Load generation on a CV90 track system using multibody dynamics." Thesis, Umeå universitet, Institutionen för fysik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-187750.

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Bae, Sungkoo. "GLAS spacecraft attitude determination using CCD star tracker and 3-axis gyros /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.

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Frydrýšek, Jan. "Simulační modely vozidel." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-218012.

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This thesis deals with simulation vehicle models for lateral control. It surveys step by step to models of tire, truck and control. At the end are showed influences of model parameters to vehicles dynamics.

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Lönnbark, Gustav. "Characterization of Track Irregularities With respect to vehicle response." Thesis, KTH, Spårfordon, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-102039.

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In this thesis a study, investigating the correlation between vehicle/track forces and track irregularities, is presented. The aim is to see if the correlation increases, using the first and second order derivatives of the track irregularities instead of the amplitude of the irregularities themselves. Data from on track tests during the DynoTRAIN measurement campaign is used as input to a MatLab program. The program processes the data with filtering and calculation of the derivatives, as well as a meter-by-meter alignment of the parameters. A linear regression analysis is done and the results

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Bezin, Yann. "An Integrated Flexible Track System Modelfor Railway Vehicle Dynamics." Thesis, Manchester Metropolitan University, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.502435.

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This thesis describes the development and validation of a versatile and Flexible Track System Model (FTSM) and its integration into a commercial railway vehicle dynamics software tool. The work was initiated to fill a gap in current disciplines and tools used to investigate problems relating to vehicle and railway track dynamics due to a lack of correlation between Finite Element (FE) and MuItibody System (MBS) based models. The. FTSM track model was validated against results from laboratory testing and compared with existing models. It was then used to study several aspects of the deteriorati

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Rådman, Marcus. "Implementation and testing of a path tracker for a full-scale Unmanned Ground Vehicle." Thesis, Luleå tekniska universitet, Institutionen för system- och rymdteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-73079.

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This project is the implementation and testing of a path tracker for a car-sized Unmanned Ground Vehicle. The vehicle, a Toyota Land Cruiser, was provided by SSC and hadpreviously been modified for remote operation. The developed path tracker uses a "follow the carrot" algorithm and has been writtenin C using the Robot Operating Software (ROS) framework and has been integrated intothe vehicles existing ROS powered software. During the implementation, the Gazebo rigid body simulator was used to simulate a simplified vehicle. Integration with the real sensors was performed using a small-scalecar

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Tegeder, Troy. "Development of an efficient solar powered unmanned aerial vehicle with an onboard solar tracker /." Diss., CLICK HERE for online access, 2007. http://contentdm.lib.byu.edu/ETD/image/etd1723.pdf.

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Tegeder, Troy Dixon. "Development of an Efficient Solar Powered Unmanned Aerial Vehicle with an Onboard Solar Tracker." BYU ScholarsArchive, 2007. https://scholarsarchive.byu.edu/etd/856.

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Methods were developed for the design of a solar powered UAV capable of tracking the sun to achieve maximum solar energy capture. A single-axis solar tracking system was designed and constructed. This system autonomously rotated an onboard solar panel to find the angle of maximum solar irradiance while the UAV was airborne. A microcontroller was programmed and implemented to control the solar tracking system. A solar panel and an efficient airframe capable of housing the solar tracking system was designed and constructed. Each of these subsystems was tested individually with either ground or f

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Frohling, Robert Desmond. "Deterioration of railway track due to dynamic vehicle loading and spatially varying track stiffness." Thesis, Pretoria : [s.n.], 1997. http://upetd.up.ac.za/thesis/available/etd-01122009-160350.

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Flodin, Jesper. "Investigate the track gauge widening on the Iron-ore line and suggest maintenance limits." Thesis, KTH, Spårfordon, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-280154.

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Iron ore export remains a major player in the Swedish economy to date, with 90% of all iron ore produced in Europe stemming from the relatively small northern country. A large amount of this ore is transported from the mines to harbours for world-wide freight on railways. On such railway is the SwedishIron-ore Line running from Kiruna to Riksgränsen, connecting to the Norwegian Ofoten line which continues to Narvik. The line has the highest permissible axle-load in Europe at 30 tonnes, which poses challenges in its own. Historically, damage on the high rail of curves have been problematic, but

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Gong, Cencen. "The interaction between railway vehicle dynamics and track lateral alignment." Thesis, University of Huddersfield, 2013. http://eprints.hud.ac.uk/id/eprint/19755/.

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This thesis examines the effect of vehicle dynamics on lateral deterioration of the track alignment. As rail traffic runs along a route, the forces imposed upon the track cause the ballast to settle, and hence the track geometry deteriorates. At a specified value of deterioration the track geometry needs to be restored by tamping or other methods. As the deterioration is mainly in the vertical direction, this aspect has been more widely studied and models have been developed to predict vertical track geometry deterioration. On the other hand, lateral track deterioration is not as well understo

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Shih, Jou-Yi. "Models for vehicle/track/ground interaction in the time domain." Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/412638/.

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Due to the demands of increasing population and environmental concerns, the high-speed train has become an important means of transportation in many countries. However, severe vibration induced by high-speed trains can occur when train speeds approach the speed of waves in the ground and track deflections can then become large. Consequently, the track and ground may no longer behave linearly. The aim of this work is to develop a three-dimensional model of vehicle/track/ground interaction in the time domain that can include the consideration of soil nonlinearity. A three-dimensional time-domain

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Thellman, Jonas. "Vehicle Dynamics Testing in Advanced DrivingSimulators Using a Single Track Model." Thesis, Linköpings universitet, Fordonssystem, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-79397.

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The purpose of this work is to investigate if simple vehicle models are realisticand useful in simulator environment. These simple models have been parametrisedby the Department of Electrical Engineering at Linköping University and havebeen validated with good results. The models have been implemented in a simulatorenvironment and a simulator study was made with 24 participants. Eachtest person drove both slalom and double lane change manoeuvres with the simplemodels and with VTI’s advanced model. The test persons were able to successfullycomplete double lane changes for higher velocities with

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Le, Good G. M. "Aerodynamic characteristics of passenger cars : comparison between wind tunnel and track derived data." Thesis, Cranfield University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260296.

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Gely, Pierre. "High frequency vehicle-track interactionsimulation : Coupling of an advanced track model with a multi-bodysystem." Thesis, KTH, Järnvägsteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-159277.

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The forces caused by the high frequency vehicle-track interaction have a great impact on thetrack maintenance. They should be represented in vehicle-track models in order to predicttheir impact. As a result, a multi-body system (MBS) should be extended with an advancedtrack model. The MBS represents the vehicle and the wheel-rail contact with a great accuracy.The track will be modeled in two different ways: a moving track model and a continuous trackmodel which is a finite element modeling (FEM). The first one will be a lumped-mass model.The most advanced system will be the second one, which i

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