subject:(Train vehicle)

University of Waikato

1. Clark, Helen Elizabeth. An investigation into the factors affecting the perception of a train's travelling speed .

Degree: 2017, University of Waikato

► Collisions between cars and trains at railway level crossing junctions continue to occur worldwide, despite efforts to reduce their frequency with educational and practical measures.… (more)

▼ Collisions between cars and trains at railway level crossing junctions continue to occur worldwide, despite efforts to reduce their frequency with educational and practical measures. Many of these collisions occur with car drivers attempting to cross the track in front of an approaching train. The size-speed illusion, first reported by Leibowitz (1985) is a phenomenon whereby larger vehicles appear to move slower than smaller vehicles travelling at the same speed. Clark et al (2013) tested the illusion using laboratory-based experiments, and found that observers routinely underestimated the relative speed of a train, when compared with a smaller vehicle (car). No specific reason for the occurrence of the size-speed illusion has been postulated, but Leibowitz suggested that observer eye movement patterns could be an underlying cause of the illusion. The aim of this thesis was to investigate how observer eye movement patterns influence the size-speed illusion, and consequently the underestimation of a large vehicle’s speed. Experiment 1 tested observers’ perceived judgement of simulated trains and cars approaching in depth in a controlled laboratory setting, with eye movements recorded by an eye tracker. Results confirmed the size-speed illusion and eye movement data showed that patterns of saccades, fixations and smooth pursuit behaviours differed in the case of the longer train, with initial saccades being made to a region further from the front of the train. Experiment 2 and 3 isolated the main types of eye movement patterns that our observers displayed and sought to test whether manipulation of these had an effect on the illusion. Experiment 2 found that manipulating smooth pursuit patterns by placing a target on the front of a long moving object eliminated the illusion. Experiment 3 found that manipulation of fixation and saccadic behaviours with stationary foreground stimuli also reduced the magnitude of the illusion but did not eliminate it entirely. The final experiment trialled three countermeasures designed to replicate the effects of manipulating eye movement patterns as shown in Experiments 2 and 3. Results showed that the intervention based on manipulation of smooth pursuit (alternating flashing lights on the front of a train) was the most effective in reducing the effects of the size-speed illusion. Our results indicate that the use of countermeasures which have the effect of changing eye movement behaviour is most effective in reducing underestimations of a train’s perceived speed, which, hopefully in future, help reduce level crossing collisions. Advisors/Committee Members: Perrone, John A (advisor), Isler, Robert B (advisor), Charlton, Samuel G (advisor).

Subjects/Keywords: train; level crossing; motion perception; eye movements; vehicle collisons; velocity

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APA (6^th Edition):

Clark, H. E. (2017). An investigation into the factors affecting the perception of a train's travelling speed . (Doctoral Dissertation). University of Waikato. Retrieved from http://hdl.handle.net/10289/11387

Chicago Manual of Style (16^th Edition):

Clark, Helen Elizabeth. “An investigation into the factors affecting the perception of a train's travelling speed .” 2017. Doctoral Dissertation, University of Waikato. Accessed January 22, 2021. http://hdl.handle.net/10289/11387.

MLA Handbook (7^th Edition):

Clark, Helen Elizabeth. “An investigation into the factors affecting the perception of a train's travelling speed .” 2017. Web. 22 Jan 2021.

Vancouver:

Clark HE. An investigation into the factors affecting the perception of a train's travelling speed . [Internet] [Doctoral dissertation]. University of Waikato; 2017. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/10289/11387.

Council of Science Editors:

Clark HE. An investigation into the factors affecting the perception of a train's travelling speed . [Doctoral Dissertation]. University of Waikato; 2017. Available from: http://hdl.handle.net/10289/11387

University of Texas – Austin

2. -7689-3691. Optimization models and methods for transportation services.

Degree: PhD, Operations Research & Industrial Engineering, 2015, University of Texas – Austin

URL: http://hdl.handle.net/2152/46983

► Managing transportation services efficiently is essential to both public and private sectors. This dissertation addresses three scheduling problems in modern transportation systems: the network design… (more)

▼ Managing transportation services efficiently is essential to both public and private sectors. This dissertation addresses three scheduling problems in modern transportation systems: the network design problem, the train dispatching problem, and the service route design problem. The transportation network design problem with service requirements designs arcs on a directed network and route commodities on the designed arcs so that i) commodities satisfy service requirements and ii) the total cost is minimized. We develop three mathematical programming models: a compact but weak arc-flow formulation, a large but strong path-flow formulation, and a hybrid formulation that uses both the arc-flow and the path-flow representations. We show that the hybrid formulation can significantly strengthen the LP formulation without introducing many variables. To find a good hybrid formulation, we develop columnization and decolumnization algorithms that uses the LP relaxation information to identify commodities that should use the path-flow representation. We also develop valid inequalities for commodities using the path-flow representation. The train dispatching problem schedules the movements of trains on scarce railroad tracks so as to improve the average velocity of trains. We develop a mathematical programming model and strengthen the model using valid inequalities. Besides, we present a heuristic to find a feasible solution quickly, which can serve as the warm-start solution to the MIP solver. For the third problem, we seek to design vehicle routes to deliver and pickup orders for a major grocery chain. We design a GRASP that can incorporate various operational requirements, including warehouse loading capacity, loading sequence, time window requirements, truck volume and weight capacities, and driver time limits. Our GRASP procedure consists of two phases: the solution construction (Phase I) and the Tabu search (Phase II). We show that the neighborhood structure of solutions is highly degenerate, which limits the solution space explored by the Tabu search. We apply the Tabu search with random variable neighborhood to increase the solution space explored. Advisors/Committee Members: Balakrishnan, Anantaram (advisor), Bard, Jonathan F. (advisor), Mirchandani, Prakash (committee member), Hasenbein , John (committee member), Dimitrov, Nedialko (committee member).

Subjects/Keywords: Network design; Optimization; Integer programming; Train dispatching; Vehicle routing

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APA (6^th Edition):

-7689-3691. (2015). Optimization models and methods for transportation services. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/46983

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

-7689-3691. “Optimization models and methods for transportation services.” 2015. Doctoral Dissertation, University of Texas – Austin. Accessed January 22, 2021. http://hdl.handle.net/2152/46983.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

-7689-3691. “Optimization models and methods for transportation services.” 2015. Web. 22 Jan 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

-7689-3691. Optimization models and methods for transportation services. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2015. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/2152/46983.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

-7689-3691. Optimization models and methods for transportation services. [Doctoral Dissertation]. University of Texas – Austin; 2015. Available from: http://hdl.handle.net/2152/46983

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

University of Alberta

3. Gilhooly, Patrick S. Evaluation of Highway Mitigation on the Frequency of Wildlife-Vehicle Collisions on the Highway and an Adjacent Railway in a Montane Ecosystem.

Degree: MS, Department of Biological Sciences, 2016, University of Alberta

URL: https://era.library.ualberta.ca/files/c5m60qs08s

► Transportation networks are expanding rapidly to meet increasing global demands to move people and cargo. These networks are essential to connect societies and economies but… (more)

▼ Transportation networks are expanding rapidly to meet increasing global demands to move people and cargo. These networks are essential to connect societies and economies but have several negative effects on wildlife populations including collisions with vehicles. Growing incidences and increasing awareness of wildlife-vehicle collisions have encouraged mitigation using a combination of wildlife fencing and crossing structures. Very litte attention has been paid to the problem of wildlife collisions with trains, or the effect of highway mitigation on rail mortality, despite frequent parallel alignment of roads and rails along transportation corridors. The objective of this thesis was to examine the effects of mitigating the TransCanada Highway between 1983 and 2013 on rates of wildlife-vehicle collisions on both the highway and an adjacent mainline of the Canadian Pacific railway in Banff National Park, Canada. A core motivation for this research was the recent increase in rail-caused mortality for the local population of grizzly bears (Ursus arctos horribilis). I examined a dataset provided by Parks Canada of collisions with large mammals (n = 2775) that were reported on either the highway or railway between 1981-2014. I attributed collisions to nine temporal spatial mitigation sections and compared collision frequency between binary types of transportation mode (highway vs. railway), guild (ungulates vs. carnivores), mitigation status (before vs. after mitigation), and their biologically-relevant two-way interactions. I further examined three species groups with particular importance to wildlife managers, which included elk (Cervus canadensis) other ungulates (family Cervidae) and bears (Ursus spp.). I anticipated that changes in population size and distribution could confound the effects of other variables, so I included spatially-referenced measures of population size for elk, the only species for which this information was available. I examined the effects of these variables on collision rates using generalized linear mixed models with mitigation section (road/rail segment) as a random effect and use of information theory to identify the best-supported models. My first analysis showed that collision frequency was generally higher on the highway, higher for ungulates, and higher before mitigation occurred, but several significant interactions revealed that lower collision rates on the railway were more pronounced for carnivores (relative to ungulates) and that lower collision rates after mitigation were more prevalent on the highway (relative to the railway), and for ungulates (relative to carnivores). Taken together, the effect of highway mitigation on collision frequency was most pronounced for ungulates on the highway. The analyses that separated transportation modalities and species groups revealed that railway collisions for elk increased with population size, but declined over time and more slightly in recent years, but with no effect of mitigation. For other ungulates, rail collisions increased in relation…

Subjects/Keywords: grizzly bear; Highway mitigation; Large mammals; Population; Wildlife-vehicle collisions; Wildlife-train collisions; Ursus arctos

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APA (6^th Edition):

Gilhooly, P. S. (2016). Evaluation of Highway Mitigation on the Frequency of Wildlife-Vehicle Collisions on the Highway and an Adjacent Railway in a Montane Ecosystem. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/c5m60qs08s

Chicago Manual of Style (16^th Edition):

Gilhooly, Patrick S. “Evaluation of Highway Mitigation on the Frequency of Wildlife-Vehicle Collisions on the Highway and an Adjacent Railway in a Montane Ecosystem.” 2016. Masters Thesis, University of Alberta. Accessed January 22, 2021. https://era.library.ualberta.ca/files/c5m60qs08s.

MLA Handbook (7^th Edition):

Gilhooly, Patrick S. “Evaluation of Highway Mitigation on the Frequency of Wildlife-Vehicle Collisions on the Highway and an Adjacent Railway in a Montane Ecosystem.” 2016. Web. 22 Jan 2021.

Vancouver:

Gilhooly PS. Evaluation of Highway Mitigation on the Frequency of Wildlife-Vehicle Collisions on the Highway and an Adjacent Railway in a Montane Ecosystem. [Internet] [Masters thesis]. University of Alberta; 2016. [cited 2021 Jan 22]. Available from: https://era.library.ualberta.ca/files/c5m60qs08s.

Council of Science Editors:

Gilhooly PS. Evaluation of Highway Mitigation on the Frequency of Wildlife-Vehicle Collisions on the Highway and an Adjacent Railway in a Montane Ecosystem. [Masters Thesis]. University of Alberta; 2016. Available from: https://era.library.ualberta.ca/files/c5m60qs08s

University of Wollongong

4. Sun, Shuaishuai. Semi-active MR technology for enhancing vehicle stability and ride comfort.

Degree: PhD, 2016, University of Wollongong

URL: 0902 AUTOMOTIVE ENGINEERING, 0910 MANUFACTURING ENGINEERING, 0912 MATERIALS ENGINEERING, 0913 MECHANICAL ENGINEERING ; https://ro.uow.edu.au/theses/4805

► With the popularisation and rapid development of railway transportation, how to maintain train stability and reduce unwanted vibration to make the ride more comfortable… (more)

Subjects/Keywords: railway vehicle; MR technology; vibration control; train stability; seat suspension; variable stiffness and damping

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APA (6^th Edition):

Sun, S. (2016). Semi-active MR technology for enhancing vehicle stability and ride comfort. (Doctoral Dissertation). University of Wollongong. Retrieved from 0902 AUTOMOTIVE ENGINEERING, 0910 MANUFACTURING ENGINEERING, 0912 MATERIALS ENGINEERING, 0913 MECHANICAL ENGINEERING ; https://ro.uow.edu.au/theses/4805

Chicago Manual of Style (16^th Edition):

Sun, Shuaishuai. “Semi-active MR technology for enhancing vehicle stability and ride comfort.” 2016. Doctoral Dissertation, University of Wollongong. Accessed January 22, 2021. 0902 AUTOMOTIVE ENGINEERING, 0910 MANUFACTURING ENGINEERING, 0912 MATERIALS ENGINEERING, 0913 MECHANICAL ENGINEERING ; https://ro.uow.edu.au/theses/4805.

MLA Handbook (7^th Edition):

Sun, Shuaishuai. “Semi-active MR technology for enhancing vehicle stability and ride comfort.” 2016. Web. 22 Jan 2021.

Vancouver:

Sun S. Semi-active MR technology for enhancing vehicle stability and ride comfort. [Internet] [Doctoral dissertation]. University of Wollongong; 2016. [cited 2021 Jan 22]. Available from: 0902 AUTOMOTIVE ENGINEERING, 0910 MANUFACTURING ENGINEERING, 0912 MATERIALS ENGINEERING, 0913 MECHANICAL ENGINEERING ; https://ro.uow.edu.au/theses/4805.

Council of Science Editors:

Sun S. Semi-active MR technology for enhancing vehicle stability and ride comfort. [Doctoral Dissertation]. University of Wollongong; 2016. Available from: 0902 AUTOMOTIVE ENGINEERING, 0910 MANUFACTURING ENGINEERING, 0912 MATERIALS ENGINEERING, 0913 MECHANICAL ENGINEERING ; https://ro.uow.edu.au/theses/4805

NSYSU

5. Shen, Ming-chi. Independently Controllable Transmission Mechanism Applied In Hybrid Vehicles.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2016, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0729116-165034

► This thesis is intended to apply an independently controllable transmission (ICT) mechanismto the gearbox inhybrid electric vehicles. The ICT mechanism consists of two planetary gear… (more)

▼ This thesis is intended to apply an independently controllable transmission (ICT) mechanismto the gearbox inhybrid electric vehicles. The ICT mechanism consists of two planetary gear trains and two transmission-connecting members. This mechanism has four terminals, including a motor, an engine, an output and a generator. It also has a dual input and a dual output, and can be appropriately switched to a triple input and one output in such a way as to receive higher degrees of freedom and integrate power flows more smoothly. This way, the powers of the engine and the motor can be integrated together.There are three different types of power supplies I have investigated under the mechanism, depending on different situations. The first type is that when a vehicle is driven, only the motor delivers the necessary power to the output shaft. In the second type, both of the motor and the engine simultaneously transmit power to the output shaft. The third one is the deceleration of a vehicle, a vehicle whose velocity gradually decreases into which torques and energy flows are inspected. Hybrid electric vehicles sold on the market today have a hydraulic torque converter each. By way of theoretical derivations and experimental verifications, we argue that using the ICT mechanism, rather than the hydraulic torque converter, can meet the demand for the gearbox. In addition, the application of the mechanism to the gearbox in hybrid vehicles can avoid infringing the patent (JP2005329842) on the planetary gear train of Toyota Prius. In this study, I would do a feasibility analysis by way of the existingequipment, designed and assembled an ICT mechanism, and proposed an experimental platform based on kinematics and dynamics. Ialso conducted three different experiments to do theoretical analyses of rotating speed, torques and power flows, as well as constructed an experimental platform to observe torques and power flows. Advisors/Committee Members: Guan-Syong Huang (chair), Po-Cheng Lin (chair), Kuang-Yuh Huang (chair), Jao-Hwa Kuang (chair), Der-Min Tsay (committee member).

Subjects/Keywords: planetary gear train; hybrid electric vehicle; independently controllable transmission mechanism; electro continuously variable transmission; transmission-connecting member; power flow

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APA (6^th Edition):

Shen, M. (2016). Independently Controllable Transmission Mechanism Applied In Hybrid Vehicles. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0729116-165034

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Shen, Ming-chi. “Independently Controllable Transmission Mechanism Applied In Hybrid Vehicles.” 2016. Thesis, NSYSU. Accessed January 22, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0729116-165034.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Shen, Ming-chi. “Independently Controllable Transmission Mechanism Applied In Hybrid Vehicles.” 2016. Web. 22 Jan 2021.

Vancouver:

Shen M. Independently Controllable Transmission Mechanism Applied In Hybrid Vehicles. [Internet] [Thesis]. NSYSU; 2016. [cited 2021 Jan 22]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0729116-165034.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Shen M. Independently Controllable Transmission Mechanism Applied In Hybrid Vehicles. [Thesis]. NSYSU; 2016. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0729116-165034

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universidade do Estado do Rio de Janeiro

6. Evelyn da Silva Viana. Estimação de velocidade de composições usando processamento de vídeo.

Degree: Master, 2011, Universidade do Estado do Rio de Janeiro

URL: http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=3416 ;

►

Esta dissertação tem como objetivo estudar um método para estimar a velocidade de veículos ferroviários usando processamento de vídeo. O sistema proposto consiste na utilização… (more)

▼

Esta dissertação tem como objetivo estudar um método para estimar a velocidade de veículos ferroviários usando processamento de vídeo. O sistema proposto consiste na utilização de câmeras ao longo das vias férreas que permitam não só o monitoramento do tráfego ferroviário, mas cujo vídeo captado possa ser utilizado para a obtenção de estimativas para a velocidade instantânea dos trens que por ela trafegam. Tal sistema seria utilizado independentemente dos sistemas de controle já utilizados pela operadora do sistema ferroviário, permitindo que os controladores possam ter uma segunda análise no caso de falha da primeira, assim como um modelo que permita avaliar a velocidade instantânea do veículo ferroviário ao longo do percurso. Os algoritmos de rastreamento empregados para esse fim abordaram diferentes métodos. Confrontaram-se os resultados obtidos com os algoritmos propostos com os dados empíricos de forma a determinar aquele com melhor resposta dada as características do sistema. O algoritmo que apresentou os melhores resultados emprega um único bloco de referência para todos os quadros comparados. A métrica de similaridade responsável por determinar quais blocos são mais ou menos similares dentro do universo de busca estipulado é a soma de diferenças absolutas (SAD, Sum of Absolute Differences). O tempo de processamento requerido por cada um dos métodos de rastreamento estudados também foi considerado nas avaliações de resultados apresentadas. Uma comparação realizada entre as velocidades coletadas e aquelas informadas pelo sistema de controle mostraram que os resultados obtidos com o sistema atual, utilizando a sinalização apenas por circuito de via apresenta resultados pouco confiáveis com erros bastante significativos. Os resultados obtidos com o sistema proposto apresentaram erros menores quando comparados àqueles obtidos pelo sistema vigente, apresentando-se assim como uma solução viável e de baixo custo quando comparada às técnicas atualmente empregadas para a medida de velocidade de trens.

This dissertation aims to study a method of estimating the speed of railway vehicles using video processing. The proposed system uses cameras disposed alongside railways to monitor traffic as well as estimate train speeds. Such a system would allow the machinist to have a backup control system, regardless of the control systems already used by the operator of the rail system. In this dissertation, tracking algorithms with different methods are discussed. By comparing results obtained with the proposed algorithm and results from empirical data, it was possible to determine the one that best provided the desired results given the characteristics of the system. The algorithm which presented the best results was the one that employs a single block for all reference frames compared. The metric of similarity used for determining which blocks are most similar within the searched universe is the sum of absolute differences (SAD). The processing time required by each of the screening methods studied was also considered in…

Advisors/Committee Members: Maria Luiza Fernandes Velloso, Karla Tereza Figueiredo Leite, Alexandre Gomes Ciancio, Lisandro Lovisolo.

Subjects/Keywords: Motion detection; Velocidade do trem; SAD; Estimação de movimento; Detecção de movimento; ENGENHARIAS; Train velocity; SAD; Motion estimation; Vehicle speed measurement

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APA (6^th Edition):

Viana, E. d. S. (2011). Estimação de velocidade de composições usando processamento de vídeo. (Masters Thesis). Universidade do Estado do Rio de Janeiro. Retrieved from http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=3416 ;

Chicago Manual of Style (16^th Edition):

Viana, Evelyn da Silva. “Estimação de velocidade de composições usando processamento de vídeo.” 2011. Masters Thesis, Universidade do Estado do Rio de Janeiro. Accessed January 22, 2021. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=3416 ;.

MLA Handbook (7^th Edition):

Viana, Evelyn da Silva. “Estimação de velocidade de composições usando processamento de vídeo.” 2011. Web. 22 Jan 2021.

Vancouver:

Viana EdS. Estimação de velocidade de composições usando processamento de vídeo. [Internet] [Masters thesis]. Universidade do Estado do Rio de Janeiro; 2011. [cited 2021 Jan 22]. Available from: http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=3416 ;.

Council of Science Editors:

Viana EdS. Estimação de velocidade de composições usando processamento de vídeo. [Masters Thesis]. Universidade do Estado do Rio de Janeiro; 2011. Available from: http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=3416 ;

Brno University of Technology

7. Štěpán, Marek. Vůz pro přepravu eurokošů: Vehicle for transport of eurocontainer.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/3375

► The objective of this bachelor thesis is design and construction of towed vehicle for eurocontainers and other pallet units. This thesis is aimed to on… (more)

Subjects/Keywords: Vozík; logistický vlak; eurokoš; řízení; logistika; manipulační technika; Vehicle; logistics train; eurocontainer; steering; logistics; handling machine

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APA (6^th Edition):

Štěpán, M. (2019). Vůz pro přepravu eurokošů: Vehicle for transport of eurocontainer. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/3375

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Štěpán, Marek. “Vůz pro přepravu eurokošů: Vehicle for transport of eurocontainer.” 2019. Thesis, Brno University of Technology. Accessed January 22, 2021. http://hdl.handle.net/11012/3375.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Štěpán, Marek. “Vůz pro přepravu eurokošů: Vehicle for transport of eurocontainer.” 2019. Web. 22 Jan 2021.

Vancouver:

Štěpán M. Vůz pro přepravu eurokošů: Vehicle for transport of eurocontainer. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/11012/3375.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Štěpán M. Vůz pro přepravu eurokošů: Vehicle for transport of eurocontainer. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/3375

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

8. Zhao, Jin. Contribution à la commande d'un train de véhicules intelligents : Contribution to intelligent vehicle platoon control.

Degree: Docteur es, Automatique et informatique industrielle, 2010, Ecole centrale de Lille

URL: http://www.theses.fr/2010ECLI0010

►

Ce mémoire est consacré à la mise en œuvre de commandes d'un train de véhicules intelligents sur autoroute ayant pour objectifs principaux de réduire la… (more)

▼

Ce mémoire est consacré à la mise en œuvre de commandes d'un train de véhicules intelligents sur autoroute ayant pour objectifs principaux de réduire la congestion et d’améliorer la sécurité routière. Après avoir présenté l'état de l'art sur des systèmes de conduite automatisée, des modèles de la dynamique longitudinale et latérale du véhicule sont présentés. Ensuite, des stratégies de contrôle longitudinal et latéral sont étudiées.D'abord, le contrôle longitudinal est conçu pour être hiérarchique avec un contrôleur de niveau supérieur et un contrôleur de niveau inférieur. Pour celui de niveau supérieur, une régulation d'inter-distance SSP (Safety Spacing Policy) est proposée. Nous avons constaté que la SSP peut assurer la stabilité de la chaîne et la stabilité des flux de trafic et augmenter ainsi la capacité de trafic. Puis, pour celui de niveau inférieur, une loi de commande floue coordonnée est proposée pour gérer l'accélérateur et le freinage. Ensuite, une loi de commande multi-modèle floue est conçue pour le contrôle latéral. De plus, pour réaliser des transformations lisses entre les différentes opérations latérales, une architecture de contrôle hiérarchique est proposée. Puis, l'intégration des commandes longitudinale et latérale est étudiée. Enfin, l'estimation des variables d’états du véhicule est discutée. Un filtre de Kalman-Bucy est conçu pour estimer les états du véhicule. En outre, un prototype de véhicule intelligent à échelle réduite est également présenté. Les performances des divers algorithmes de commande proposés ont été testées par simulations, et les résultats ont été confirmés par les premières expériences en utilisant le prototype

This PhD thesis is dedicated to the control strategies for intelligent vehicle platoon in highway with the main aims of alleviating traffic congestion and improving traffic safety. After a review of the different existing automated driving systems, the vehicle longitudinal and lateral dynamic models are derived. Then, the longitudinal control and lateral control strategies are studied respectively. At first, the longitudinal control system is designed to be hierarchical with an upper level controller and a lower level controller. For the upper level controller, a safety spacing policy (SSP) is proposed. It is shown that the proposed SSP can ensure string stability, traffic flow stability and improve traffic capacity. Then, a coordinated throttle and brake fuzzy controller (lower level controller) is designed, in which a logic switch is designed to coordinate the two actuators (throttle and brake pedals). Second, for the lateral control, a multi-model fuzzy controller is designed. And a hierarchical lateral control architecture is also proposed, which can effectuate flexible switch between different lateral operations. After that, the integration of the longitudinal controller and lateral controller is also studied. Finally, the estimation of vehicle states is discussed. A Kalman-Bucy filter is designed to estimate vehicle states in lateral dynamics. Moreover, a…

Advisors/Committee Members: El Kamel, Abdelkader (thesis director).

Subjects/Keywords: Véhicule intelligent; Train de véhicule; Commande longitudinale; Commande latérale; Commande multi-modèle; Commande floue; Intelligent vehicle; Vehicle platoon; Longitudinal control; Lateral control; Multi-model control; Fuzzy control

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APA (6^th Edition):

Zhao, J. (2010). Contribution à la commande d'un train de véhicules intelligents : Contribution to intelligent vehicle platoon control. (Doctoral Dissertation). Ecole centrale de Lille. Retrieved from http://www.theses.fr/2010ECLI0010

Chicago Manual of Style (16^th Edition):

Zhao, Jin. “Contribution à la commande d'un train de véhicules intelligents : Contribution to intelligent vehicle platoon control.” 2010. Doctoral Dissertation, Ecole centrale de Lille. Accessed January 22, 2021. http://www.theses.fr/2010ECLI0010.

MLA Handbook (7^th Edition):

Zhao, Jin. “Contribution à la commande d'un train de véhicules intelligents : Contribution to intelligent vehicle platoon control.” 2010. Web. 22 Jan 2021.

Vancouver:

Zhao J. Contribution à la commande d'un train de véhicules intelligents : Contribution to intelligent vehicle platoon control. [Internet] [Doctoral dissertation]. Ecole centrale de Lille; 2010. [cited 2021 Jan 22]. Available from: http://www.theses.fr/2010ECLI0010.

Council of Science Editors:

Zhao J. Contribution à la commande d'un train de véhicules intelligents : Contribution to intelligent vehicle platoon control. [Doctoral Dissertation]. Ecole centrale de Lille; 2010. Available from: http://www.theses.fr/2010ECLI0010

9. Hendi, Hayder. Ontologies et web sémantique pour une construction évolutive d'applications dédiées à la logistique : Ontologies and semantic web for an evolutive development of logistic applications.

Degree: Docteur es, Informatique. Web sémantique, 2017, Littoral

URL: http://www.theses.fr/2017DUNK0462

►

Le domaine de la logistique implique souvent la résolution de problèmes combinatoires complexes. Ces derniers font également implicitement référence à des processus, acteurs, activités et… (more)

▼

Le domaine de la logistique implique souvent la résolution de problèmes combinatoires complexes. Ces derniers font également implicitement référence à des processus, acteurs, activités et méthodes concernant divers aspects qu'il faut considérer. Ainsi, un même problème peut faire intervenir des processus de vente/achat, transport/livraison et gestion de stock. Ces processus sont tellement divers et interconnectés qu'il est difficile pour un logisticien de tous les maîtriser. Dans cette thèse, nous proposons l'explicitation, par le biais d'ontologies, de connaissances conceptuelles et sémantiques concernant les processus logistiques. Ces connaissances explicites sont alors mises à contribution pour construire un système à base de connaissances permettant de guider les logisticiens dans la construction, de façon incrémentale et semi-automatique, de solutions informatiques à un problème qui leur est posé à un moment donné. Nous mettons en oeuvre une ontologie concernant le domaine de la logistique connectée à une ontologie associée à la problématique de l'optimisation. Nous établissons ainsi un lien sémantique explicite entre le domaine de la logistique et celui de l'optimisation. Cela permet aux logisticiens d'identifier de façon précise et sans ambigüité le problème logistique auquel il est confronté et les problèmes d'optimisation associés. L'identification des problèmes conduit alors à un processus de choix des solutions allant du choix du processus logistique précis à mettre en oeuvre à celui de la méthode de résolution du problème combinatoire et cela jusqu'à la découverte du composant informatique à invoquer et qui est matérialisé par un service web. L'approche que nous avons adoptée et mise en oeuvre a été expérimentée avec les problèmes de routage de véhicules, le problème de transport ferroviaire de passagers et le problème de terminaux de conteneurs.

Logistics problems are often complex combinatorial problems. These may also implicitly refer to the processes, actors, activities, and methods concerning various aspects that need to be considered. Thus the same process may involve the processes of sale/purchase, transport/delivery, and stock management. These processes are so diverse and interconnected that it is difficult for a logistic expert to compete all of them. In this thesis, we propose the explications with the help of ontologies of conceptual ans semantic knowledge concerning the logistic processes. This explicit knowledge is then used to develop a reasoning system to guide the logistic expert for an incremental and semi-automatic construction of a software solution to an instantly posed problem. We define an ontology concerning the inter-connected logistics and associated optimization problem. We, henceforth, establish an explicit semantic link between the domains of logistics and the optimization. It may allow the logistic expert to identify precisely and unambiguously the confronted logistic problem and the associated optimization problem. The identification of the problems then leads to a…

Advisors/Committee Members: Fonlupt, Cyril (thesis director), Bouneffa, Mourad (thesis director), Ahmad, Adeel (thesis director).

Subjects/Keywords: Web sémantique; Ontologie; Logistique; Optimisation; Web services; Owl; Description logique; Problème d'acheminement de véhicule; Problème de train de passagers; Problème de terminal de container; Semantic web; Ontology; Logistic; Optimization; Web services; Owl; Logic description; Vehicle routing problem; Passenger train problem; Container terminal problem

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hendi, H. (2017). Ontologies et web sémantique pour une construction évolutive d'applications dédiées à la logistique : Ontologies and semantic web for an evolutive development of logistic applications. (Doctoral Dissertation). Littoral. Retrieved from http://www.theses.fr/2017DUNK0462

Chicago Manual of Style (16^th Edition):

Hendi, Hayder. “Ontologies et web sémantique pour une construction évolutive d'applications dédiées à la logistique : Ontologies and semantic web for an evolutive development of logistic applications.” 2017. Doctoral Dissertation, Littoral. Accessed January 22, 2021. http://www.theses.fr/2017DUNK0462.

MLA Handbook (7^th Edition):

Hendi, Hayder. “Ontologies et web sémantique pour une construction évolutive d'applications dédiées à la logistique : Ontologies and semantic web for an evolutive development of logistic applications.” 2017. Web. 22 Jan 2021.

Vancouver:

Hendi H. Ontologies et web sémantique pour une construction évolutive d'applications dédiées à la logistique : Ontologies and semantic web for an evolutive development of logistic applications. [Internet] [Doctoral dissertation]. Littoral; 2017. [cited 2021 Jan 22]. Available from: http://www.theses.fr/2017DUNK0462.

Council of Science Editors:

Hendi H. Ontologies et web sémantique pour une construction évolutive d'applications dédiées à la logistique : Ontologies and semantic web for an evolutive development of logistic applications. [Doctoral Dissertation]. Littoral; 2017. Available from: http://www.theses.fr/2017DUNK0462

Brno University of Technology

10. Horák, Šimon. Koncepční návrh malého šestikolového užitkového vozidla.: Design concept six wheel small utility vehicle.

Degree: 2018, Brno University of Technology

URL: http://hdl.handle.net/11012/850

► This thesis deals with a conceptual design of small utility vehicle with three axles. The aim is to devise a suitable type of frame along… (more)

Subjects/Keywords: koncepční návrh; malé užitkové vozidlo; rám; zavěšení kol; řízení; hnací ústrojí; brzdy; conceptual design; small utility vehicle; frame; suspension system; steering system; drive train; braking system

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Horák, �. (2018). Koncepční návrh malého šestikolového užitkového vozidla.: Design concept six wheel small utility vehicle. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/850

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Horák, Šimon. “Koncepční návrh malého šestikolového užitkového vozidla.: Design concept six wheel small utility vehicle.” 2018. Thesis, Brno University of Technology. Accessed January 22, 2021. http://hdl.handle.net/11012/850.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Horák, Šimon. “Koncepční návrh malého šestikolového užitkového vozidla.: Design concept six wheel small utility vehicle.” 2018. Web. 22 Jan 2021.

Vancouver:

Horák �. Koncepční návrh malého šestikolového užitkového vozidla.: Design concept six wheel small utility vehicle. [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/11012/850.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Horák �. Koncepční návrh malého šestikolového užitkového vozidla.: Design concept six wheel small utility vehicle. [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/850

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Virginia Tech

11. Hosseinipour, Milad. Electromechanical Design and Development of the Virginia Tech Roller Rig Testing Facility for Wheel-rail Contact Mechanics and Dynamics.

Degree: PhD, Mechanical Engineering, 2016, Virginia Tech

URL: http://hdl.handle.net/10919/82542

► The electromechanical design and development of a sophisticated roller rig testing facility at the Railway Technologies Laboratory (RTL) of Virginia Polytechnic and State University (VT)… (more)

▼ The electromechanical design and development of a sophisticated roller rig testing facility at the Railway Technologies Laboratory (RTL) of Virginia Polytechnic and State University (VT) is presented. The VT Roller Rig is intended for studying the complex dynamics and mechanics at the wheel-rail interface of railway vehicles in a controlled laboratory environment. Such measurements require excellent powering and driving architecture, high-performance motion control, accurate measurements, and relatively noise-free data acquisition systems. It is critical to accurately control the relative dynamics and positioning of rotating bodies to emulate field conditions. To measure the contact forces and moments, special care must be taken to ensure any noise, such as mechanical vibration, electrical crosstalk, and electromagnetic interference (EMI) are kept to a minimum. This document describes the steps towards design and development of all electromechanical subsystems of the VT Roller Rig, including the powertrain, power electronics, motion control systems, sensors, data acquisition units, safety and monitoring circuits, and general practices followed for satisfying the local and international codes of practice. The VT Roller Rig is comprised of a wheel and a roller in a vertical configuration that simulate the single-wheel/rail interaction in one-fourth scale. The roller is five times larger than the scaled wheel to keep the contact patch distortion that is inevitable with a roller rig to a minimum. This setup is driven by two independent AC servo motors that control the velocity of the wheel and roller using state-of-the-art motion control technologies. Six linear actuators allow for adjusting the simulated load, wheel angle of attack, rail cant, and lateral position of the wheel on the rail. All motion controls are performed using digital servo drives, manufactured by Kollmorgen, VA, USA. A number of sensors measure the contact patch parameters including force, torque, displacement, rotation, speed, acceleration, and contact patch geometry. A unified communication protocol between the actuators and sensors minimizes data conversion time, which allows for servo update rates of up to 48kHz. This provides an unmatched bandwidth for performing various dynamics, vibrations, and transient tests, as well as static steady-state conditions. The VT Roller Rig has been debugged and commissioned successfully. The hardware and software components are tested both individually and within the system. The VT Roller Rig can control the creepage within 0.3RPM of the commanded value, while actively controlling the relative position of the rotating bodies with an unprecedented level of accuracy, no more than 16nm of the target location. The contact force measurement dynamometers can dynamically capture the contact forces to within 13.6N accuracy, for up to 10kN. The instantaneous torque in each driveline can be measured with better than 6.1Nm resolution. The VT Roller Rig Motion Programming Interface (MPI) is highly flexible for both… Advisors/Committee Members: Ahmadian, Mehdi (committeechair), Ha, Dong S. (committee member), Vick, Brian (committee member), Taheri, Saied (committee member), Mirzaeifar, Reza (committee member).

Subjects/Keywords: railway; roller rig; electromechanical system; mechanical design; electrical design; train testing facility; wheel-rail contact; vehicle dynamics; motion control; encoder; hardware-in-the-loop operation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hosseinipour, M. (2016). Electromechanical Design and Development of the Virginia Tech Roller Rig Testing Facility for Wheel-rail Contact Mechanics and Dynamics. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/82542

Chicago Manual of Style (16^th Edition):

Hosseinipour, Milad. “Electromechanical Design and Development of the Virginia Tech Roller Rig Testing Facility for Wheel-rail Contact Mechanics and Dynamics.” 2016. Doctoral Dissertation, Virginia Tech. Accessed January 22, 2021. http://hdl.handle.net/10919/82542.

MLA Handbook (7^th Edition):

Hosseinipour, Milad. “Electromechanical Design and Development of the Virginia Tech Roller Rig Testing Facility for Wheel-rail Contact Mechanics and Dynamics.” 2016. Web. 22 Jan 2021.

Vancouver:

Hosseinipour M. Electromechanical Design and Development of the Virginia Tech Roller Rig Testing Facility for Wheel-rail Contact Mechanics and Dynamics. [Internet] [Doctoral dissertation]. Virginia Tech; 2016. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/10919/82542.

Council of Science Editors:

Hosseinipour M. Electromechanical Design and Development of the Virginia Tech Roller Rig Testing Facility for Wheel-rail Contact Mechanics and Dynamics. [Doctoral Dissertation]. Virginia Tech; 2016. Available from: http://hdl.handle.net/10919/82542

KTH

12. Sánchez, Ignacio Robla. Wheel Wear Simulation of the Light Rail Vehicle A32.

Degree: Rail Vehicles, 2010, KTH

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-261228

► During the last decade, a novel methodology for wheel wear simulation has been developed in Sweden. The practical objective of this simulation procedure is… (more)

▼ During the last decade, a novel methodology for wheel wear simulation has been developed in Sweden. The practical objective of this simulation procedure is to provide an integratedengineering tool to support rail vehicle design with respect to wheel wear performance and detailed understanding of wheel-rail interaction. The tool is integrated in a vehicle dynamicssimulation environment.The wear calculation is based on a set of dynamic simulations, representing the vehicle, the network, and the operating conditions. The wheel profile evolution is simulated in an iterativeprocess by adding the contribution from each simulation case and updating the profile geometry.The method is being validated against measurements by selected pilot applications. To strengthen the confidence in simulation results the scope of application should be as wide aspossible in terms of vehicle classes. The purpose of this thesis work has been to try to extend the scope of validation of this method into the light rail area, simulating the light rail vehicleA32 operating in Stockholm commuter service on the line Tvärbanan.An exhaustive study of the wear theory and previous work on wear prediction has been necessary to understand the wear prediction method proposed by KTH. The dynamicbehaviour of rail vehicles has also been deeply studied in order to understand the factors affecting wear in the wheel-rail contact.The vehicle model has been validated against previous studies of this vehicle. Furthermore new elements have been included in the model in order to better simulate the real conditionsof the vehicle.Numerous tests have been carried out in order to calibrate the wear tool and find the settings which better match the real conditions of the vehicle.Wheel and rail wear as well as profile evolution measurements were available before this work and they are compared with those results obtained from the simulations carried out.The simulated wear at the tread and flange parts of the wheel match quite well the measurements. However, the results are not so good for the middle part, since themeasurements show quite evenly distributed wear along the profile while the results from simulations show higher difference between extremes and middle part. More tests would benecessary to obtain an optimal solution.

Subjects/Keywords: wheel wear; light rail; train; simulation; vehicle model; wear chart; wheel flange; tread; rail profile; wheel profile.; Vehicle Engineering; Farkostteknik

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Sánchez, I. R. (2010). Wheel Wear Simulation of the Light Rail Vehicle A32. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-261228

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sánchez, Ignacio Robla. “Wheel Wear Simulation of the Light Rail Vehicle A32.” 2010. Thesis, KTH. Accessed January 22, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-261228.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sánchez, Ignacio Robla. “Wheel Wear Simulation of the Light Rail Vehicle A32.” 2010. Web. 22 Jan 2021.

Vancouver:

Sánchez IR. Wheel Wear Simulation of the Light Rail Vehicle A32. [Internet] [Thesis]. KTH; 2010. [cited 2021 Jan 22]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-261228.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sánchez IR. Wheel Wear Simulation of the Light Rail Vehicle A32. [Thesis]. KTH; 2010. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-261228

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

13. Moses, Kenneth C. A Durable Terrestrial Drive Train for a Small Air Vehicle.

Degree: MSs (Engineering), EMC - Mechanical Engineering, 2010, Case Western Reserve University School of Graduate Studies

URL: http://rave.ohiolink.edu/etdc/view?acc_num=case1270233578

► Weight, aerodynamic profile, and strength are considered in the design of a terrestrial drive train for a small air vehicle. Several drive trains were developed… (more)

Subjects/Keywords: Engineering; Fluid Dynamics; Mechanical Engineering; Robots; Technology; Micro Air Vehicle; MAV; hybrid vehicle; drive train; terrestrial locomotion; aerial locomotion; wind tunnel; impact test; aircraft design; aerodynamics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Moses, K. C. (2010). A Durable Terrestrial Drive Train for a Small Air Vehicle. (Masters Thesis). Case Western Reserve University School of Graduate Studies. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=case1270233578

Chicago Manual of Style (16^th Edition):

Moses, Kenneth C. “A Durable Terrestrial Drive Train for a Small Air Vehicle.” 2010. Masters Thesis, Case Western Reserve University School of Graduate Studies. Accessed January 22, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1270233578.

MLA Handbook (7^th Edition):

Moses, Kenneth C. “A Durable Terrestrial Drive Train for a Small Air Vehicle.” 2010. Web. 22 Jan 2021.

Vancouver:

Moses KC. A Durable Terrestrial Drive Train for a Small Air Vehicle. [Internet] [Masters thesis]. Case Western Reserve University School of Graduate Studies; 2010. [cited 2021 Jan 22]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=case1270233578.

Council of Science Editors:

Moses KC. A Durable Terrestrial Drive Train for a Small Air Vehicle. [Masters Thesis]. Case Western Reserve University School of Graduate Studies; 2010. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=case1270233578

University of Illinois – Chicago

14. Aboubakr, Ahmed K. Use of Non-inertial Coordinates and Implicit Integration for Efficient Solution of Multibody Systems.

Degree: 2015, University of Illinois – Chicago

URL: http://hdl.handle.net/10027/19332

► Development of computational methods, formulations, and algorithms to study interconnected bodies that undergo large deformation, translational, and rotational displacements is the main focus for this… (more)

▼ Development of computational methods, formulations, and algorithms to study interconnected bodies that undergo large deformation, translational, and rotational displacements is the main focus for this thesis. This thesis discusses the use of the concept of non-inertial coordinates and implicit numerical integrations methods to solve stiff MBS differential/algebraic equations. Complex MBS examples that consist of rigid and flexible bodies are used as examples in order to demonstrate the use of these developed algorithms. One of the main contributions of this thesis is to employ the concept of the inertial and non-inertial coordinates to obtain an efficient solution for practical MBS applications. Inertial coordinates have generalized inertia forces associated with them, while the non-inertial coordinates have no generalized inertia forces. In order to avoid having a singular inertia matrix and/or high frequency oscillations, the second derivatives of the non-inertial coordinates are not used when formulating the system equations of motion in this study. In this case, the system coordinates are partitioned into two distinct sets; inertial and non-inertial coordinates. The use of the principle of virtual work leads to a coupled system of differential and algebraic equations expressed in terms of the inertial and non-inertial coordinates. The differential equations are used to determine the inertial accelerations which can be integrated to determine the inertial coordinates and velocities. The non-inertial coordinates are determined by using an iterative algorithm to solve a set of nonlinear algebraic force equations obtained using quasi-static equilibrium conditions. The non-inertial velocities are determined by solving these algebraic force equations at the velocity level. The non-inertial coordinates and velocities enter into the formulation of the generalized forces associated with the inertial coordinates. Using the concept of non-inertial coordinates and the resulting differential/algebraic equations obtained in this thesis leads to significant reduction in the numbers of state equations, system inertial coordinates, and constraint equations; and allows avoiding a system of stiff differential equations that can arise because of the relatively small mass. The development of accurate nonlinear longitudinal train force models is necessary in order to better understand railroad vehicle dynamic scenarios that include braking, traction, and derailments. Car coupler forces have significant effects on the longitudinal train dynamics and stability. Using the concept of non-inertial coordinate developed in this thesis allows developing of a more detailed coupler model that captures the coupler kinematics without significantly increasing the number of state equations and the dimension of the problem. The coupler model proposed in this thesis allows for the car bodies to have arbitrary displacements, also avoids having a stiff system of differential equations that can result from the use of relatively small masses. In order to… Advisors/Committee Members: Shabana, Ahmed (advisor), Royston, Thomas (committee member), Recuero, Antonio (committee member), Foster, Craig (committee member), Fallahi, Behrooz (committee member).

Subjects/Keywords: Non-inertial Coordinates; longitudinal train forces; coupler geometric nonlinearities; railroad vehicle dynamics; multibody systems. TLISMNI implicit numerical integration; multibody system differential /algebraic equations; sparse matrix implementation; Jacobian-free Newton-Krylov, stiff equations.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Aboubakr, A. K. (2015). Use of Non-inertial Coordinates and Implicit Integration for Efficient Solution of Multibody Systems. (Thesis). University of Illinois – Chicago. Retrieved from http://hdl.handle.net/10027/19332

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Aboubakr, Ahmed K. “Use of Non-inertial Coordinates and Implicit Integration for Efficient Solution of Multibody Systems.” 2015. Thesis, University of Illinois – Chicago. Accessed January 22, 2021. http://hdl.handle.net/10027/19332.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Aboubakr, Ahmed K. “Use of Non-inertial Coordinates and Implicit Integration for Efficient Solution of Multibody Systems.” 2015. Web. 22 Jan 2021.

Vancouver:

Aboubakr AK. Use of Non-inertial Coordinates and Implicit Integration for Efficient Solution of Multibody Systems. [Internet] [Thesis]. University of Illinois – Chicago; 2015. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/10027/19332.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Aboubakr AK. Use of Non-inertial Coordinates and Implicit Integration for Efficient Solution of Multibody Systems. [Thesis]. University of Illinois – Chicago; 2015. Available from: http://hdl.handle.net/10027/19332

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

KTH

15. Vinberg, Erik Magni. Energy use in the operational cycle of passenger rail vehicles.

Degree: Rail Vehicles, 2018, KTH

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-234853

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This master thesis investigates and analyzes the energy use for traction and auxiliary equipment in passenger rail vehicles. It covers both the train service… (more)

▼

This master thesis investigates and analyzes the energy use for traction and auxiliary equipment in passenger rail vehicles. It covers both the train service with passengers and when the trains are going through other stages in the everyday operation. The operational cycle and associated operational situations are introduced as a way of describing the varying use of a train over time. The descriptions focus on the most common activities and situations, such as stabling and parking, regular cleaning, inspections and maintenance. Also how these situations affect energy use by their need for different auxiliary systems to be active. An energy model is developed based on the operational cycle as a primary input, together with relevant vehicle parameters and climate conditions. The latter proving to be a major influence on the energy used by the auxiliary equipment. The model is applied in two case studies, on SJ's X55 and Västtrafik's X61 trains. Both are modern electric multiple units equipped with energy meters. Model input is gathered from available technical documentation, previous studies and by measurements and parameter estimations. Operational cycle input is collected through different planning systems and rolling stock rosters. Climate input is finally compiled from open meteorological data banks. The results of the case studies show that the method and models are useful for studying the energy used by the trains in their operational cycles. With the possibility to distinguish the energy used by the auxiliary equipment, both during and outside the time the trains are in service with passengers. With this it's also possible to further investigate and study potential energy saving measures for the auxiliary equipment. Simulations of new ventilation control functions and improved use of existing operating modes on the trains show that considerable energy savings could be achieved with potentially very small investments or changes to the trains. The results generally show the importance of a continued investigation of the auxiliary equipment's energy use, as well as how the different operational situations other than the train service affect the total energy use.

Detta examensarbete utreder och analyserar energianvändningen för passagerarjärnvägsfordons traktion- och hjälpkraftssystem, både under tågdriften med passagerare och andra delmoment som tågen genomgår under den normala dagliga driften. För detta introduceras driftcykeln och tillhörande driftsituationer som ett sätt att beskriva användningen av ett tåg över tiden. Syftet är att beskriva de vanligast förekommande aktiviteterna och situationerna, såsom uppställning och parkering, regelbundna inspektioner, klargörningar och underhåll. Även hur dessa situationer påverkar energianvändningen genom ett varierande behov av hjälpkraft och aktiva funktioner i tågen. En energimodell baserad på driftcykeln som huvudsaklig indata, tillsammans med tågets egenskaper samt det omgivande klimatet, tas fram. Klimatet visar sig vara en…

Subjects/Keywords: Energy use; passenger train operation; auxiliary power; auxiliary systems; energy modelling; case studies; stabling; parking; service; climate; HVAC.; Energianvändning; passagerartåg; hjälpkraft; hjälpsystem; energimodell; typstudier; uppställning; parkering; drift; klimat; HVAC.; Vehicle Engineering; Farkostteknik

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Vinberg, E. M. (2018). Energy use in the operational cycle of passenger rail vehicles. (Thesis). KTH. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-234853

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Vinberg, Erik Magni. “Energy use in the operational cycle of passenger rail vehicles.” 2018. Thesis, KTH. Accessed January 22, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-234853.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Vinberg, Erik Magni. “Energy use in the operational cycle of passenger rail vehicles.” 2018. Web. 22 Jan 2021.

Vancouver:

Vinberg EM. Energy use in the operational cycle of passenger rail vehicles. [Internet] [Thesis]. KTH; 2018. [cited 2021 Jan 22]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-234853.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Vinberg EM. Energy use in the operational cycle of passenger rail vehicles. [Thesis]. KTH; 2018. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-234853

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Clemson University

16. Mayyas, Abdel. COMPREHENSIVE THERMAL MODELING OF POWER SPLIT HYBRID POWER-TRAIN AND ELECTRONICS.

Degree: PhD, Automotive Engineering, 2010, Clemson University

URL: https://tigerprints.clemson.edu/all_dissertations/636

► Hybrid electric vehicle (HEV) uses both internal combustion engine (ICE) with an electric system. The combination of the electric power train with the ICE is… (more)

▼ Hybrid electric vehicle (HEV) uses both internal combustion engine (ICE) with an electric system. The combination of the electric power train with the ICE is intended to achieve both better fuel economies than the conventional vehicles and better performance. Several types of HEV exist with different layouts. Recent HEVs' make use of regenerative braking, which converts the vehicles' kinetic energy into electric energy instead of wasting it as heat as conventional brakes do. A hybrid-electric is more fuel efficient than ICE and has less environmental impact. The new HEV with its new Key Characteristics and Configurations (i.e. Mechanical complexity, Multiple driving modes, Multiple prime movers, ... etc) inflict an interference with the existed thermal management system of the conventional vehicles, which leads to a new thermal management issues that should be addressed to enhance the performance of such systems. There is no complete knowledge in the open literature about the thermal management issues of HEV yet. This dissertation introduces Comprehensive Thermal Modeling of Hybrid Vehicular systems to assist monitoring the added-on of hybrid modules into the vehicle thermal management system. The model proposes a combined experimental and finite differencing nodal net work simulation modeling approach; using Thermography detectors calibrated for emissivity to capture 2-D spatial and transient temperature measurements. The Thermographic detectors were deployed through dual band thermography to neutralize the emissivity and to provide different dynamic ranges to iii achieve accurate temperature measurements. A thermocouples network was installed to provide a reference signal. A new comprehensive 3-D thermal model was developed by generating 3-D surface description for a complete hybrid electric vehicle from 3-D scans of an actual vehicle to guarantee the quality of the surface geometry, and break down the surfaces of the model into finite elements to improve the accuracy for better thermal analysis. The boundary conditions from a vehicle under different driving modes and load scenarios were deployed into the finite differencing simulation which was performed using finite differencing code capable of solving a sophisticated thermal/fluid systems with minimal user interaction (RadTherm) to provide a 3-D Thermal predictions and an Image Viewer (wireframe and animated thermal display). The 3-D model assisted monitoring the adding of Hybrid modules into the vehicle thermal management system and was used to analyze packaging considerations and integrating different modules for Hybrid Vehicles. In addition to the design of alternative materials for hybrid modules and Battery Packs for better thermal management; the model assisted studying the influence of applying different cooling methodologies and evaluate its effect on the thermal performance of the HEVs' power trains. A spatial and a transient temperature profiles obtained from the simulation for… Advisors/Committee Members: Mayyas, Abdel Ra'ouf T, Omar , Dr. Mohammad A, Haque , Dr. Imtiaz, Pierluigi , Dr. Pisu, Prucka , Dr. Robert, Hung , Dr. Steve T.

Subjects/Keywords: Battery packs; Drive cycle; Hybrid Electric Vehicle; Hybrid Power-train; Power electronics; Thermal management; Operations Research, Systems Engineering and Industrial Engineering

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APA (6^th Edition):

Mayyas, A. (2010). COMPREHENSIVE THERMAL MODELING OF POWER SPLIT HYBRID POWER-TRAIN AND ELECTRONICS. (Doctoral Dissertation). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_dissertations/636

Chicago Manual of Style (16^th Edition):

Mayyas, Abdel. “COMPREHENSIVE THERMAL MODELING OF POWER SPLIT HYBRID POWER-TRAIN AND ELECTRONICS.” 2010. Doctoral Dissertation, Clemson University. Accessed January 22, 2021. https://tigerprints.clemson.edu/all_dissertations/636.

MLA Handbook (7^th Edition):

Mayyas, Abdel. “COMPREHENSIVE THERMAL MODELING OF POWER SPLIT HYBRID POWER-TRAIN AND ELECTRONICS.” 2010. Web. 22 Jan 2021.

Vancouver:

Mayyas A. COMPREHENSIVE THERMAL MODELING OF POWER SPLIT HYBRID POWER-TRAIN AND ELECTRONICS. [Internet] [Doctoral dissertation]. Clemson University; 2010. [cited 2021 Jan 22]. Available from: https://tigerprints.clemson.edu/all_dissertations/636.

Council of Science Editors:

Mayyas A. COMPREHENSIVE THERMAL MODELING OF POWER SPLIT HYBRID POWER-TRAIN AND ELECTRONICS. [Doctoral Dissertation]. Clemson University; 2010. Available from: https://tigerprints.clemson.edu/all_dissertations/636

Ohio University

17. Murphy, Robert T. Developing, Demonstrating, and Validating a Vehicle Test Bed to Extend the Capabilities of a Chassis Dynamometer Test System.

Degree: MS, Mechanical Engineering (Engineering and Technology), 2008, Ohio University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1226630699

► There was a need to study drive train components (such as transmissions) in the Mechanical Engineering Automotive lab at Ohio University. The approach was… (more)

Subjects/Keywords: Mechanical Engineering; Chassis Dynamometer; Wireless Telemetry Strain Gage; Electric Bobcat; Vehicle Drive Train; Component Test Bed; Torque Distribution

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APA (6^th Edition):

Murphy, R. T. (2008). Developing, Demonstrating, and Validating a Vehicle Test Bed to Extend the Capabilities of a Chassis Dynamometer Test System. (Masters Thesis). Ohio University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1226630699

Chicago Manual of Style (16^th Edition):

Murphy, Robert T. “Developing, Demonstrating, and Validating a Vehicle Test Bed to Extend the Capabilities of a Chassis Dynamometer Test System.” 2008. Masters Thesis, Ohio University. Accessed January 22, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1226630699.

MLA Handbook (7^th Edition):

Murphy, Robert T. “Developing, Demonstrating, and Validating a Vehicle Test Bed to Extend the Capabilities of a Chassis Dynamometer Test System.” 2008. Web. 22 Jan 2021.

Vancouver:

Murphy RT. Developing, Demonstrating, and Validating a Vehicle Test Bed to Extend the Capabilities of a Chassis Dynamometer Test System. [Internet] [Masters thesis]. Ohio University; 2008. [cited 2021 Jan 22]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1226630699.

Council of Science Editors:

Murphy RT. Developing, Demonstrating, and Validating a Vehicle Test Bed to Extend the Capabilities of a Chassis Dynamometer Test System. [Masters Thesis]. Ohio University; 2008. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1226630699

Georgia Tech

18. Daniel, Aang. Routing and Scheduling with Time Windows: Models and Algorithms for Tramp Sea Cargos and Rail Car-Blocks.

Degree: PhD, Industrial and Systems Engineering, 2006, Georgia Tech

URL: http://hdl.handle.net/1853/19698

► This thesis introduces a new model formulation to solve routing and scheduling problems, with the main applications in answering routing and scheduling problems faced by… (more)

▼ This thesis introduces a new model formulation to solve routing and scheduling problems, with the main applications in answering routing and scheduling problems faced by a sea-cargo shipping company and a railroad company. For the work in sea-cargo routing and scheduling, we focus on the tramp shipping operation. Tramp shipping is a demand-driven type of shipping operation which does not have fixed schedules. The schedules are based on the pickup and download locations of profitable service requests. Given set of products distributed among a set of ports, with each product having pickup and download time windows and a destination port, the problem is to find the schedule for a fleet of ships that maximizes profit over a specified time horizon. The problem is modeled as a Mixed Integer Non-Linear Program and reformulated as an equivalent Mixed Integer Linear Program. Three heuristic methods, along with computational results, are presented. We also exploit the special structure enjoyed by our model and introduce an upper-bounding problem to the model. With a little modification, the model is readily extendable to reflect soft time windows and inter-ship cargo-transfers. The other part of our work deals with train routing and scheduling. A typical train shipment consists of a set of cars having a common origin and destination. To reduce the handling of individual shipments as they travel, shipments are grouped into blocks. The problem is that given sets of blocks to be carried from origins to destinations, construct the most cost effective train routes and schedules and determine block-to-train assignments, such that the number of block transfers (block swaps) between trains, the number of trains used, and some other cost measures are minimized. Incorporating additional precedence requirements, the modeling techniques from the shipping research are employed to formulate a mixed integer nonlinear program for this train routing and scheduling problem. Computational results are presented. Advisors/Committee Members: Al-Khayyal, Faiz (Committee Chair), Barnes, Earl (Committee Member), Johnson, Ellis (Committee Member), Karimi, IA (Committee Member), Sokol, Joel (Committee Member).

Subjects/Keywords: Scheduling; Optimal schedule; Cargo transfer model; Routing and scheduling with time windows; Bilinear constraints; Vehicle routing; Pickup and delivery problem; Train routing and scheduling; Sea cargo routing and scheduling; Sea cargo routing; VRP; Train scheduling; Soft time windows; Set packing; Optimal train schedule; Cargo ships; Optimum ship routing; Scheduling; Mathematical models

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APA (6^th Edition):

Daniel, A. (2006). Routing and Scheduling with Time Windows: Models and Algorithms for Tramp Sea Cargos and Rail Car-Blocks. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/19698

Chicago Manual of Style (16^th Edition):

Daniel, Aang. “Routing and Scheduling with Time Windows: Models and Algorithms for Tramp Sea Cargos and Rail Car-Blocks.” 2006. Doctoral Dissertation, Georgia Tech. Accessed January 22, 2021. http://hdl.handle.net/1853/19698.

MLA Handbook (7^th Edition):

Daniel, Aang. “Routing and Scheduling with Time Windows: Models and Algorithms for Tramp Sea Cargos and Rail Car-Blocks.” 2006. Web. 22 Jan 2021.

Vancouver:

Daniel A. Routing and Scheduling with Time Windows: Models and Algorithms for Tramp Sea Cargos and Rail Car-Blocks. [Internet] [Doctoral dissertation]. Georgia Tech; 2006. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/1853/19698.

Council of Science Editors:

Daniel A. Routing and Scheduling with Time Windows: Models and Algorithms for Tramp Sea Cargos and Rail Car-Blocks. [Doctoral Dissertation]. Georgia Tech; 2006. Available from: http://hdl.handle.net/1853/19698

Brno University of Technology

19. Kulich, Pavel. Dynamická analýza koleje: Dynamic Analysis of Track.

Degree: 2018, Brno University of Technology

URL: http://hdl.handle.net/11012/64328

► The diploma thesis deals with analytical description of vehicle - track dynamic interface. There are described basic analytical models which are subsequently extended in order… (more)

Subjects/Keywords: Konstrukce koleje; průhyb koleje; tuhost koleje; tlumení v koleji; kritická rychlost vlaku; analytický model; Winklerův model; Pasternakův model; diferenciální rovnice; ohybová tuhost; smyková tuhost; rychlost vozidla; hmotnost.; Permanent way; rail deflection; track stiffness; track damping ratio; train critical velocity; analytical model; Winkler model; Pasternak model; differential equation; bending stiffness; shear stiffness; vehicle velocity; weight.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kulich, P. (2018). Dynamická analýza koleje: Dynamic Analysis of Track. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/64328

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kulich, Pavel. “Dynamická analýza koleje: Dynamic Analysis of Track.” 2018. Thesis, Brno University of Technology. Accessed January 22, 2021. http://hdl.handle.net/11012/64328.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kulich, Pavel. “Dynamická analýza koleje: Dynamic Analysis of Track.” 2018. Web. 22 Jan 2021.

Vancouver:

Kulich P. Dynamická analýza koleje: Dynamic Analysis of Track. [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/11012/64328.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kulich P. Dynamická analýza koleje: Dynamic Analysis of Track. [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/64328

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Queensland University of Technology

20. Hawari, Haitham M. Minimising track degradation through managing vehicle/track interaction.

Degree: 2007, Queensland University of Technology

URL: https://eprints.qut.edu.au/16366/

► 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… (more)

▼ 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 maintenance of track are reduced. However, there is little known about how the characteristics of train components affect time-dependent track degradation. Track degradation through deviation of track from its ideal position has the most effect on maintenance costs. Therefore, the present research aims to investigate this track degradation and improve understanding of the effects of train characteristics (such as train mass and speed, suspension stiffness and damping) on railway tracks. The research is conducted by looking into the relationship between wheel/rail forces and track degradation on one hand and between wheel/rail forces and train characteristics on the other hand, with the objective of assisting in managing vehicle/track interaction in order to minimise track degradation. This aim is achieved by investigating the above two relationships to attain the desired relationship between track degradation and train characteristics. The research focuses on wheel/rail vertical forces (both amplitudes and frequencies), vertical track alignment (longitudinal vertical profile), and rail head defects. The study started by collecting wheel/rail vertical forces data in addition to data on vertical track degradation under sustained traffic loads on a heavy haul railway section of track in Central Queensland. Also, five years of degradation and maintenance history data were collected on three other test sections of railway track under variety of traffic conditions and loads in Central Queensland. There were four main analyses of this data employed to probe the study. The first analysis was performed by examining the track degradation history data. The standard deviation method was used in this first analysis to acquire the rate of deterioration in terms of its relationship to track profile (roughness). The second analysis was accomplished by correlating the vertical wheel/rail forces to both vertical track profile and rail roughness using signal processing principles and a function know as coherence. The third analysis was carried out by using the computer simulation software NUCARS to obtain the link between wheel/rail forces and the deterioration of the vertical track profile. The fourth analysis was achieved by combining the results obtained from the above three analyses to acquire the rate of track deterioration in terms of its…

Subjects/Keywords: railway track; vertical forces; vertical profile; rail roughness; train characteristics; vehicle/track interaction; track degradation or deterioration; track maintenance; coal wagon; track recording vehicle (TRV); corrugation analysis trolley (CAT); signal processing techniques; coherence correlation; NUCARS; rate of deterioration

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hawari, H. M. (2007). Minimising track degradation through managing vehicle/track interaction. (Thesis). Queensland University of Technology. Retrieved from https://eprints.qut.edu.au/16366/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hawari, Haitham M. “Minimising track degradation through managing vehicle/track interaction.” 2007. Thesis, Queensland University of Technology. Accessed January 22, 2021. https://eprints.qut.edu.au/16366/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hawari, Haitham M. “Minimising track degradation through managing vehicle/track interaction.” 2007. Web. 22 Jan 2021.

Vancouver:

Hawari HM. Minimising track degradation through managing vehicle/track interaction. [Internet] [Thesis]. Queensland University of Technology; 2007. [cited 2021 Jan 22]. Available from: https://eprints.qut.edu.au/16366/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hawari HM. Minimising track degradation through managing vehicle/track interaction. [Thesis]. Queensland University of Technology; 2007. Available from: https://eprints.qut.edu.au/16366/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

21. Yazhemsky, Dennis Ion. A Real-Time Capable Adaptive Optimal Controller for a Commuter Train.

Degree: MASc, 2017, McMaster University

URL: http://hdl.handle.net/11375/21469

►

This research formulates and implements a novel closed-loop optimal control system that drives a train between two stations in an optimal time, energy efficient, or… (more)

▼

This research formulates and implements a novel closed-loop optimal control system that drives a train between two stations in an optimal time, energy efficient, or mixed objective manner. The optimal controller uses sensor feedback from the train and in real-time computes the most efficient control decision for the train to follow given knowledge of the track profile ahead of the train, speed restrictions and required arrival time windows. The control problem is solved both on an open track and while safely driving no closer than a fixed distance behind another locomotive. In contrast to other research in the field, this thesis achieves a real-time capable and embeddable closed-loop optimization with advanced modeling and numerical solving techniques with a non-linear optimal control problem. This controller is first formulated as a non-convex control problem and then converted to an advanced convex second-order cone problem with the intent of using a simple numerical solver, ensuring global optimality, and improving control robustness. Convex and non-convex numerical methods of solving the control problem are investigated and closed-loop performance results with a simulated vehicle are presented under realistic modeling conditions on advanced tracks both on desktop and embedded computer architectures. It is observed that the controller is capable of robust vehicle driving in cases both with and without modeling uncertainty. The benefits of pairing the optimal controller with a parameter estimator are demonstrated for cases where very large mismatches exists between the controller model and the simulated vehicle. Stopping performance is consistently within 25cm of target stations, and the worst case closed-loop optimization time was within 100ms for the computation of a 1000 point control horizon on an i7-6700 machine.

Thesis

Master of Applied Science (MASc)

This research formulates and implements a novel closed-loop optimal control system that drives a train between two stations in an optimal time, energy efficient, or mixed objective manner. It is deployed on a commuter vehicle and directly manages the motoring and braking systems. The optimal controller uses sensor feedback from the train and in real-time computes the most efficient control decision for the train to follow given knowledge of the track profile ahead of the train, speed restrictions and required arrival time windows. The final control implementation is capable of safe, high accuracy and optimal driving all while computing fast enough to reliably deploy on a rail vehicle.

Advisors/Committee Members: Sirouspour, Shahin, Electrical and Computer Engineering.

Subjects/Keywords: Optimal Control; Commuter Train; Numerical Optimization; Convex; Second Order Cone Program; Multi-Vehicle; Real-Time; Sparse Optimization; Non-Convex Optimization; Energy Optimal; Time Optimal; Closed-Loop; Embedded Systems; Convex Solver; Non-Linear Programming

…Current train speed (m/s) Current vehicle position (m) Current vehicle… …vehicle strays out of safe operating conditions in both manual and driverless train operation… …objective of an optimal controller for a rail vehicle is simply to drive a train between two… …existing literature in the field of train control. • Ch. 3 develops the train vehicle model. • Ch… …signals along the track for the following train, such that the following vehicle cannot arrive…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Yazhemsky, D. I. (2017). A Real-Time Capable Adaptive Optimal Controller for a Commuter Train. (Masters Thesis). McMaster University. Retrieved from http://hdl.handle.net/11375/21469

Chicago Manual of Style (16^th Edition):

Yazhemsky, Dennis Ion. “A Real-Time Capable Adaptive Optimal Controller for a Commuter Train.” 2017. Masters Thesis, McMaster University. Accessed January 22, 2021. http://hdl.handle.net/11375/21469.

MLA Handbook (7^th Edition):

Yazhemsky, Dennis Ion. “A Real-Time Capable Adaptive Optimal Controller for a Commuter Train.” 2017. Web. 22 Jan 2021.

Vancouver:

Yazhemsky DI. A Real-Time Capable Adaptive Optimal Controller for a Commuter Train. [Internet] [Masters thesis]. McMaster University; 2017. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/11375/21469.

Council of Science Editors:

Yazhemsky DI. A Real-Time Capable Adaptive Optimal Controller for a Commuter Train. [Masters Thesis]. McMaster University; 2017. Available from: http://hdl.handle.net/11375/21469

Brno University of Technology

22. Feilhauer, Petr. Modul reléových výstupů elektronického tachografu: Relay output module for electronic tachograph.

Degree: 2018, Brno University of Technology

URL: http://hdl.handle.net/11012/14922

► This bachelor thesis contains detailed description of function and wiring current Electronic tachograph RE1xx from company UniControls-Tramex. For comparison there is mentioned description of competitor’s… (more)

Subjects/Keywords: Adresovací multiplexor; Antiparalelní ochranná dioda; ATmega64; Drážní vozidlo; Elektromagnetické relé; Elektronický rychloměr; EMC; Filtrovací kondenzátory; Galvanické oddělení; Hardwarový watchdog; ISP (SPI); Jednotka elektroniky; JTAG; Klidový stav linky; Klopný obvod typu D; Komunikační a indikační jednotka; Koncepce vývoje; Mikrokontroler; Modul reléových výstupů; Ochranný transil; Ovládací cívka; Polovodičové relé; Přepínací kanál; Pull-up rezistor; Reléový výstup; Řídicí obvod; RS485; Rychlostní radar Sériová datová komunikace; Spínací kanál; Sériové programování; Testovací software; Addressing multiplexer; Anti-parallel protective diode; ATmega64; Communication and indicative unit; Conception of development; Control circuit; Control coil; D-type flip-flop; Electromagnetic relay; Electronic tachograph; EMC; Filtering capacitors; Galvanic separation; Hardware watchdog; ISP (SPI); JTAG; Microcontroller; Module of relay outputs; Protective transil; Pull-up resistors; Relay output; Release condition of line; RS485; Serial data communication; Serial programming; Solid state relay; Speed radar; Switch-over channel; Switching channel; Unit of electronics; Testing software; Train vehicle

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APA (6^th Edition):

Feilhauer, P. (2018). Modul reléových výstupů elektronického tachografu: Relay output module for electronic tachograph. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/14922

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Feilhauer, Petr. “Modul reléových výstupů elektronického tachografu: Relay output module for electronic tachograph.” 2018. Thesis, Brno University of Technology. Accessed January 22, 2021. http://hdl.handle.net/11012/14922.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Feilhauer, Petr. “Modul reléových výstupů elektronického tachografu: Relay output module for electronic tachograph.” 2018. Web. 22 Jan 2021.

Vancouver:

Feilhauer P. Modul reléových výstupů elektronického tachografu: Relay output module for electronic tachograph. [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2021 Jan 22]. Available from: http://hdl.handle.net/11012/14922.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Feilhauer P. Modul reléových výstupů elektronického tachografu: Relay output module for electronic tachograph. [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/14922

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Open Access Theses and Dissertations