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Dissertations / Theses on the topic 'Space Vector'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Rogers, L. Warren. "Synthetic space vector modulation." Monterey, California: Naval Postgraduate School, 2013. http://hdl.handle.net/10945/34731.

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Approved for public release; distribution is unlimited<br>Alternating current motors are used throughout the fleet because of their rugged construction and nearly maintenance free operation. Since the U.S. Navy is exploring and acting on the possibilities of DC distribution systems, the need exists for simple, reliable three-phase voltage source inverter (VSI) powered induction machines. Until recently, VSIs utilized a pulse width modulation (PWM) scheme controlling the frequency and amplitude of each phase. A novel and simple hardware centered VSI controller was designed, simulated, built and

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2

Beamer, Diane K. "Polarization Signatures in Vector Space." University of Dayton / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1530977525748664.

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3

Borg, Oskar. "Nyckelordssökning : Baserat på Vector Space Model." Thesis, Högskolan i Skövde, Institutionen för kommunikation och information, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-8306.

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Då mängden information bara ökar, så ökar även behovet att ha åtkomst till informationen lättillgängligt. Detta skapar då ett behov för ett gränssnitt som kan söka bland informationen. I detta arbete har det undersökts om en implementation av Vector Space Model ger mera relevanta resultat jämfört mot en enklare implementation som inte baseras på Vector Space Model. Sökningen utförs i en relationsdatabas med ett inverterat index, databasen fylls med data ifrån internetforumet Stack Overflow. Genom att bygga en sökmotor som returnerade två olika resultatlistor för varje sökning så fick tio använ

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4

NAGARAJ, S. R., and R. K. RAJANGAM. "VECTOR CARDIOGRAPH EXPERIMENT IN SPACE SHUTTLE." International Foundation for Telemetering, 1989. http://hdl.handle.net/10150/614498.

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International Telemetering Conference Proceedings / October 30-November 02, 1989 / Town & Country Hotel & Convention Center, San Diego, California<br>The Vector cardiography is the 3 dimensional study of Electrocardiographic responses of the human heart. A Vector cardiograph (VCG) instrument was designed and developed to monitor the Cardiographic responses of the Indian payload specialist under zero G conditions in the US Space Shuttle during the scheduled INSAT-lC launch. Accordingly the proposal made by Department of Space for using the vector cardiograph measurement in the Space Shuttle was

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5

Specchia, Caterina. "Vector Fields in a Rindler Space." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/5523/.

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In questo lavoro ci si propone di studiare la quantizzazione del campo vettoriale, massivo e non massivo, in uno spazio-tempo di Rindler, considerando in particolare i gauge di Feynman e assiale. Le equazioni del moto vengono risolte esplicitamente in entrambi i casi; sotto opportune condizioni, è stato inoltre possibile trovare una base completa e ortonormale di soluzioni delle equazioni di campo in termini di modi normali di Fulling. Si è poi analizzata la quantizzazione dei campi vettoriali espressi in questa base.

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6

Chuang, Tzu-Shien. "A variable structure space voltage vector controlled switched reluctance flux vector drive." Thesis, University of Warwick, 1997. http://wrap.warwick.ac.uk/106984/.

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Through simulation and experimental investigation this thesis shows that (i) the switched reluctance motor is not different from any other motor in energy conversion theory but the difference is only in the structure and the operating characteristics; (ii) under high loads or high speeds the relative phase angle of the current with respect to the rotor pole must be advanced; (iii) the kinetic energy in the motor can be quickly returned to the d.c. link source or be transferred to other phase windings by the regenerative operation. A synchronous singly-excited control scheme is introduced to th

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7

Kaldas, Hany Kamel Halim. "Relativistic Gamow vectors : state vectors for unstable particles /." Full text (PDF) from UMI/Dissertation Abstracts International, 2000. http://wwwlib.umi.com/cr/utexas/fullcit?p3004300.

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8

Knutsson, Thomas. "Traveling the Outer Dimensions of Vector Space." Thesis, Umeå universitet, Institutionen för datavetenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-38920.

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One of the most prominent trends of our time is the emergence of an information society. The amount of data available is absolutely surging, at the same time as we are becoming more and more dependent on constant access to updated and relevant information. To derive high quality information from a large quantity of textual data, we need efficient methods for structuring and querying the data. One way is to use the Vector Space Model (VSM), a mathematical way of representing the relationship between words and documents. Wellknown examples of this approach are Latent Semantic Indexing (LSI) and

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9

Khan, Hamid. "Optimised space vector modulation for variable speed drives." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2012. http://tel.archives-ouvertes.fr/tel-00999475.

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The dissertation documents research work carried out on Pulse Width Modulation (PWM) strategies for hard switched Voltage Source Inverters (VSI) for variable speed electric drives. This research is aimed at Hybrid Electric Vehicles (HEV). PWM is at the heart of all variable speed electric drives; they have a huge influence on the overall performance of the system and may also help eventually give us an extra degree of freedom in the possibility to rethink the inverter design including the re-dimensioning of the inverter components.HEVs tend to cost more than conventional internal combustion en

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10

Zhang, Zhunping. "Context-based motion retrieval using vector space model." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45856.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2008.<br>Includes bibliographical references (p. 87-89).<br>Motion retrieval is the problem of retrieving highly relevant motions in a timely manner. The principal challenge is to characterize the similarity between two motions effectively, which is tightly related to the gap between the motion data's representation and its semantics. Our approach uses vector space model to measure the similarities among motions, which are made discrete using the vocabulary technique and transformation i

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11

Celanovic, Nikola. "Space Vector Modulation and Control of Multilevel Converters." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/29164.

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This dissertation is the result of research and development of a power conditioning system for Superconductive Magnetic Energy Storage System. The dominant challenge of this research was to develop the power conditioning system that can match slowly varying dc voltage and dc current on the super conductive magnet side with the ac voltages and ac currents on the utility side. At the same time the power conditioning system was required to provide a bi-directional power flow to the superconductive magnet. The focus of this dissertation is a three-level diode clamped dc-ac converter which is a

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12

Oreta, Timothy. "Vector-Galileon-Tensor theories of gravity." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/20925.

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A detailed study of the cosmological evolution in a particular vector-tensor theory of gravity with a potential and a Galileon-motivated interaction terms is presented. The evolution of vector field self interactions that are relatively related to Galileon fields throughout the expansion history of the universe is considered and a classification of the parameters M (mass term) and H (Hubble parameter) according to the behaviour of the field in each cosmological epoch is carried out. In particular, we obtain conditions for the parameters so that the field grows exponentially or oscillates with

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13

Acheson, Emily. "Predicting Disease Vector Distributions Through Space and Time Using Environmental and Vector Control Data." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32797.

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Within this thesis, I performed a systematic review of approaches to broad-scale modelling of disease vector distributions and determined the most widely used methods predict current species niches and project the models forward under future climate scenarios without temporal validation. I then provided a forward-looking summary of emerging techniques to improve the reliability and transferability of those models, including historical calibration. I then predicted Anopheles mosquito distributions across Tanzania in 2001 (before large-scale ITN distributions) and compared this model with count

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Nugen, Frederick T. "A Presentation of Current Research on Partitions of Lines and Space." Thesis, University of North Texas, 1999. https://digital.library.unt.edu/ark:/67531/metadc2243/.

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Ng, Jason Wee Peng. "Array communications : space-time vector channel estimation and reception." Thesis, Imperial College London, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.415349.

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16

Mason, Nicholas J. "Space vector modulation of a 4-leg matrix converter." Thesis, University of Nottingham, 2011. http://eprints.nottingham.ac.uk/12266/.

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This thesis covers the investigation into the use of Space Vector Modulation for the control of a 4-leg matrix converter, which is capable of providing a 3-phase plus neutral supply from a standard balanced 3-phase source. Traditional 3x3 matrix converters have limited use in this application as they are only capable of supplying a balanced three-phase load. It would be desirable to be able to power unbalanced and non-linear loads, requiring that the converter provides a neutral connection. As with voltage source inverters, this goal can be achieved by extending the number of output legs in th

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Alghunaim, Abdulaziz (Abdulaziz K. ). "A vector space approach for aspect-based sentiment analysis." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/100292.

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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2015.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 75-82).<br>Vector representations for language have been shown to be useful in a number of Natural Language Processing (NLP) tasks. In this thesis, we aim to investigate the effectiveness of word vector representations for t

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18

Lena, Erika. "Combining Vector Space Model and Word2Vec: a preliminary study." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/23545/.

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This paper investigates traditional Information Retrieval (IR) methods for syntax evaluation of documents. The main aim of this study is to search for a method to combine IR models with new studies in Natural Language Processing (NLP), specifically with Word2Vec model. These techniques provide a semantic distributed representation of terms which can be used to improve retrieval and documents ranking. The present work focus on the selection of words to be used for documents retrieval. A further point of interest is the research of a suitable weighting scheme to be applied for the eva

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Plavin, T. V. "Comparison and Search of Texts Using Vector Space Model." Thesis, Sumy State University, 2016. http://essuir.sumdu.edu.ua/handle/123456789/47132.

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The article deals with the issues of coping of information. It outlines one of the technics of a text comparison and search of similar texts. The core logic of this technic is in using of the vector space model. Presented a way of obtaining of a quantitative evaluation of similarity of two texts and finding of matching offers.

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Gibert, Domingo Jaume. "Vector Space Embedding of Graphs via Statistics of Labelling Information." Doctoral thesis, Universitat Autònoma de Barcelona, 2012. http://hdl.handle.net/10803/96240.

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El reconeixement de patrons és la tasca que pretén distingir objectes entre diferents classes. Quan aquesta tasca es vol solucionar de forma automàtica un pas crucial és el com representar formalment els patrons a l'ordinador. En funció d'aquests formalismes, podem distingir entre el reconeixement estadístic i l'estructural. El primer descriu objectes com un conjunt de mesures col·locats en forma del que s'anomena un vector de característiques. El segon assumeix que hi ha relacions entre parts dels objectes que han de quedar explícitament representades i per tant fa servir estructures relacio

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Vasquez, Rebecca (Rebecca Ann). "The Variable Vector Countermeasure Suit for space habitation and exploration." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/92118.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2014.<br>"June 2014." Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 129-132).<br>The Variable Vector Countermeasure Suit (V2Suit) is a countermeasure suit for sensorimotor adaptation and musculoskeletal deconditioning in microgravity. The V2suit will consist of modules containing arrays of control moment gyroscopes (CMGs) which will be controlled to provide viscous resistance to motion against a specified direction. To reduce the coordination and sensorimotor problem

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Westin, Emil. "Authorship classification using the Vector Space Model and kernel methods." Thesis, Uppsala universitet, Statistiska institutionen, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-412897.

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Authorship identification is the field of classifying a given text by its author based on the assumption that authors exhibit unique writing styles. This thesis investigates the semantic shortcomings of the vector space model by constructing a semantic kernel created from WordNet which is evaluated on the problem of authorship attribution. A multiclass SVM classifier is constructed using the one-versus-all strategy and evaluated in terms of precision, recall, accuracy and F1 scores. Results show that the use of the semantic scores from WordNet degrades the performance compared to using a linea

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23

Nunes, Castanheira da Costa Jose Manuel. "Affine and curvature collineations in space-time." Thesis, University of Aberdeen, 1989. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU602256.

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The purpose of this thesis is the study of the Lie algebras of affine vector fields and curvature collineations of space-time, the aim being, in the first case, to obtain upper bounds on the dimension of the Lie algebra of affine vector fields (under the assumption that the space-time is non-flat) as well as to obtain a characterization of such vector fields in terms of other types of symmetries. In the case of curvature collineations the aim was that of characterizing space-times which may admit an infinite-dimensional Lie algebra of curvature collineations as well as to find local characteri

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24

Lee, Cheng-Yang. "Symmetries of Elko and massive vector fields." Thesis, University of Canterbury. Physics and Astronomy, 2012. http://hdl.handle.net/10092/7231.

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This thesis studies the symmetries and phenomenologies of the massive vector fields of indefinite spin with both scalar and spin-one degrees of freedom and Elko. The investigation is conducted by using and extending the quantum field theory formalism developed by Wigner and Weinberg. In particular, we explore the possibility that the W± and Z bosons have an additional scalar degree of freedom and show that Elko is a fermionic dark matter candidate. We show that the massive vector fields of indefinite spin are consistent with Poincaré symmetry and have physically desirable properties that are

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25

Esin, Yunus Emre. "Improvement Of Corpus-based Semantic Word Similarity Using Vector Space Model." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610759/index.pdf.

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This study presents a new approach for finding semantically similar words from corpora using window based context methods. Previous studies mainly concentrate on either finding new combination of distance-weight measurement methods or proposing new context methods. The main difference of this new approach is that this study reprocesses the outputs of the existing methods to update the representation of related word vectors used for measuring semantic distance between words, to improve the results further. Moreover, this novel technique provides a solution to the data sparseness of vectors whic

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Polyvyanyy, Artem, and Dominik Kuropka. "A quantitative evaluation of the enhanced topic-based vector space model." Universität Potsdam, 2007. http://opus.kobv.de/ubp/volltexte/2009/3381/.

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This contribution presents a quantitative evaluation procedure for Information Retrieval models and the results of this procedure applied on the enhanced Topic-based Vector Space Model (eTVSM). Since the eTVSM is an ontology-based model, its effectiveness heavily depends on the quality of the underlaying ontology. Therefore the model has been tested with different ontologies to evaluate the impact of those ontologies on the effectiveness of the eTVSM. On the highest level of abstraction, the following results have been observed during our evaluation: First, the theoretically deduced statement

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Tolunay, Bengi. "Space Vector Pulse Width Modulationfor Three-Level Converters : a LabVIEW Implementation." Thesis, Uppsala universitet, Elektricitetslära, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-169019.

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This thesis explains the theory and implementation of the Space Vector Pulse WidthModulation (SVPWM) using the graphical programming environment LabVIEW as itsbasis. All renewable energy sources are in need of multilevel power electronics inform of multilevel inverters. The mind behind the pulses created by the inverters isthe SVPWM. This modulation type uses a space vector, referred to as the referencevector, to locate and create the desired sinusoidal-shaped waveform. Using LabVIEWas the software makes it easy to read real-time output from the integrated circuit ofthe hardware (FPGA). The SV

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Kronberg, Anders. "Salient Pole Motor Inverter Design : with Implementation of Space Vector Modulation." Thesis, Uppsala universitet, Elektricitetslära, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-192994.

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The researchers at the Department of Electricity at Uppsala University has recently entered the field of electric motor design, however no real knowledge of motor control of salient pole permanent magnet motors exists in the department. This master thesis is a continuation of a previous bachelor thesis that analyses the theory behind the control and simulating two different control methods. The two methods are here discarded for their high torque ripple. A third method is therefore implemented in this thesis to improve the performance. This thesis will present the design and construction of an

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29

Vasconcelos, Nuno Miguel Borges de Pinho Cruz de. "Library-based image coding using vector quantization of the prediction space." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/62918.

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Thesis (M.S.)--Massachusetts Institute of Technology, Program in Media Arts & Sciences, 1993.<br>Includes bibliographical references (leaves 122-126).<br>by Nuno Miguel Borges de Pinho Cruz de Vasconcelos.<br>M.S.

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Cruz, Jaime Y. "Disturbance vector in space from surface gravity anomalies using complementary models /." The Ohio State University, 1985. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487261553060066.

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31

Prasad, V. Himamshu. "Analysis and Comparison of Space Vector Modulation Schemes for Three-Leg and Four-Leg Voltage Source Inverters." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/36578.

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Several space vector modulation schemes have been analyzed for three-leg and four-leg voltage source inverters. The analysis is performed with respect to a) switching losses, b) total harmonic distortion, c) peak-to-peak ripple in the line current and d) the ease of digital implementation. The analysis is performed over the entire range of modulation index and for varying load power factors (leading and lagging) under both balanced and unbalanced load conditions. The analysis shows that the performance of four-leg inverters is similar to three-leg inverters for various space vector modulation

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Engku, Ariff E. A. R. B. "Space vector Pwm techniques for six-phase three-level inverter-fed drives." Thesis, Liverpool John Moores University, 2018. http://researchonline.ljmu.ac.uk/7982/.

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In recent years, research in the area of multiphase drives has increased significantly. Having higher number of machine phases allows the current to be shared between the phases, thus reducing the current rating of power semiconductors used in the power converter. Additionally, if a multilevel inverter is used to drive the machine, the output voltage waveforms are going to be approximated closer toward sinusoidal waveforms, thus resulting in lower total harmonic distortion. Therefore, the combination of multiphase and multilevel technologies gives considerable benefits compared to conventional

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Tribbey, William. "Construction and Analysis of Vector Space Models for Use in Aspect Mining." NSUWorks, 2011. http://nsuworks.nova.edu/gscis_etd/326.

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A legacy software system can be taken to consist of N methods which contain within their implementations the intended activities and functions of the system. These activities and functions are referred to as concerns. Some of these concerns are typically implemented and used in multiple methods throughout the system and these are deemed to be crosscutting concerns. Through the use of an aspect-oriented programming paradigm, the implementation and use of these crosscutting concerns can be abstracted into aspects. In order to refactor the system, the process of aspect mining is carried out to id

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Green, Michael Douglas 1965. "Manifolds, Vector Bundles, and Stiefel-Whitney Classes." Thesis, University of North Texas, 1990. https://digital.library.unt.edu/ark:/67531/metadc504181/.

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The problem of embedding a manifold in Euclidean space is considered. Manifolds are introduced in Chapter I along with other basic definitions and examples. Chapter II contains a proof of the Regular Value Theorem along with the "Easy" Whitney Embedding Theorem. In Chapter III, vector bundles are introduced and some of their properties are discussed. Chapter IV introduces the Stiefel-Whitney classes and the four properties that characterize them. Finally, in Chapter V, the Stiefel-Whitney classes are used to produce a lower bound on the dimension of Euclidean space that is needed to embed real

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35

Capocci, Michael Sean. "Conformal structures and symmetries." Thesis, University of Aberdeen, 1994. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU070087.

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The purpose of this thesis is to study methods by which conformal vector fields on pseudo-Riemannian manifolds can be simplified. A vector field on a manifold M with metric g is conformal if its local flows preserve the metric g up to a scaling and unlike Killing vector fields, which preserve g exactly, it cannot in general be linearised in a neighbourhood of any given point. The difference is that a Killing vector field is affine, that is it preserves a connection on the manifold. In this case the connection is the canonical (Levi-Civita) connection associated with g, but affine vector fields

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Furuhashi, Takeshi, Tomohiro Yoshikawa, Kanta Tachibana, and Minh Tuan Pham. "Feature Extraction Based on Space Folding Model and Application to Machine Learning." 日本知能情報ファジィ学会, 2010. http://hdl.handle.net/2237/20689.

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Session ID: TH-F3-4<br>SCIS & ISIS 2010, Joint 5th International Conference on Soft Computing and Intelligent Systems and 11th International Symposium on Advanced Intelligent Systems. December 8-12, 2010, Okayama Convention Center, Okayama, Japan

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Silva, Peththadurage S. Narendra De. "Analysis of N-phase induction machines using a generalised decoupled vector space theory." Thesis, Heriot-Watt University, 2006. http://hdl.handle.net/10399/2151.

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A generalised analysis method for N-phase induction machines is presented. The Nphase system is analysed using 2N degrees of freedom. A new conceptual view of a multi-phase system using an N-dimensional vector space has been developed. It is shown that such an N-dimensional vector space can be decoupled into 'h(N+PJ independent two dimensional vector planes, where if N is odd, p=l, otherwise P=O. Each vector plane is shown to be the combination oftwo positive and negative sequence components ofthe same phase order. Each vector space is shown to be independent and can be controlled separately b

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Narayanan, G. "Synchronised Pulsewidth Modulation Strategies Based On Space Vector Approach For Induction Motor Drives." Thesis, Indian Institute of Science, 1999. https://etd.iisc.ac.in/handle/2005/139.

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In high power induction motor drives, the switching frequency of the inverter is quite low due to the high losses in the power devices. Real-time PWM strategies, which result in reduced harmonic distortion under low switching frequencies and have maximum possible DC bus utilisation, are developed for such drives in the present work. The space vector approach is taken up for the generation of synchronised PWM waveforms with 3-Phase Symmetry, Half Wave Symmetry and Quarter Wave Symmetry, required for high-power drives. Rules for synchronisation and the waveform symmetries are brought out. Th

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Narayanan, G. "Synchronised Pulsewidth Modulation Strategies Based On Space Vector Approach For Induction Motor Drives." Thesis, Indian Institute of Science, 1999. http://hdl.handle.net/2005/139.

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In high power induction motor drives, the switching frequency of the inverter is quite low due to the high losses in the power devices. Real-time PWM strategies, which result in reduced harmonic distortion under low switching frequencies and have maximum possible DC bus utilisation, are developed for such drives in the present work. The space vector approach is taken up for the generation of synchronised PWM waveforms with 3-Phase Symmetry, Half Wave Symmetry and Quarter Wave Symmetry, required for high-power drives. Rules for synchronisation and the waveform symmetries are brought out. Thes

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Wei, Liau Wen, and 廖文偉. "Vector-Space-Based Speaker Adaptation." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/14695465443737005967.

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陳宏亮. "Space vector PWM inverter for induction motor." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/80902045781543702812.

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wu, chin-chung, and 吳錦長. "Space-Vector PWM and Soft-Switching Inverter Design." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/31901818179071106165.

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碩士<br>國立交通大學<br>電機與控制工程系<br>87<br>Soft-switching techniques ( zero current switching or zero voltage switching ) applied to power inverter can substantially improve the performances, allowing high frequency operation and minimization of acoustic noise and EMI, reduction of switching losses, limitation of dv/dt and di/dt stress in the power devices .The quasi-resonant dc link soft switching circuit used in this paper needs additional components such as two switches, a diode, an inductor and a capacitor, the two switches are also soft switching, which produces a minimum losses. The quasi-reson

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"Space Vector: Video Games for Introductory Newtonian Mechanics." Doctoral diss., 2014. http://hdl.handle.net/2286/R.I.25818.

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abstract: This dissertation describes Space Vector 1 and Space Vector 2, two video games that introduce Newtonian mechanics concepts. Space Vector 1 is a side-scrolling game, in which players choose to drop bombs or supplies. Players had to identify if the physics was correct during a mission, or they had to plot the trajectory of a falling object, which was then simulated. In Space Vector 2, players were given velocity and acceleration values and had to plot the trajectory of a spaceship across a grid, or players were given a trajectory of a spaceship on a grid and had to program the veloc

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Zhong, Yue-Yang, and 鍾越揚. "Vector Form Large Displacement Analysis of Space Frames." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/91755312135193320680.

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碩士<br>中原大學<br>土木工程研究所<br>101<br>ABSTRACT In this paper, the vector form intrinsic finite element (VFIFE) method is applied to simulate the geometrically nonlinear behaviors of space frame structures. In the conventional geometrically nonlinear finite element method, energy method or principle of virtual work depend on shape function of element incremental displacement is used to establish the elasticity stiffness matrix and the geometry stiffness matrix. Then, we use prediction-iteration to find the answer. Different from conventional finite element method, the VFIFE method models analyzed dom

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Sehgal, Kriti. "Duality for Spaces of Holomorphic Functions into a Locally Convex Topological Vector Space." Thesis, 2018. https://etd.iisc.ac.in/handle/2005/4913.

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Consider an open subset O of the complex plane and a function f : O ÝÑ C. We understand the concept of holomorphicity of a complex-valued function. Suppose a function f defined on O takes values in a locally convex topological vector space (the complex plane is one particular example of a locally convex topological vector space). We want to study the notion of holomorphicity for f in this general setting. In the paper “Sur certains espaces de fonctions holomorphes I” [1], Alexandre Grothendieck deals with the concept of holomorphicity of vector-valued functions and duality. We read, unde

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Das, Anandarup. "Investigations On Dodecagonal Space Vector Generation For Induction Motor Drives." Thesis, 2009. https://etd.iisc.ac.in/handle/2005/1034.

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Multilevel converters are finding increased attention in industry and academia as the preferred choice of electronic power conversion for high power applications. They have a wide application area in a variety of industries involving transportation and energy management, a significant portion of which comprises of multilevel inverter fed induction motor drives. Multilevel inverters are ideally suitable for high power drives, since the switching frequency of the devices is limited for high power applications. In low power drives, the switching frequency is often in the range of tens of kHz, so

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47

Das, Anandarup. "Investigations On Dodecagonal Space Vector Generation For Induction Motor Drives." Thesis, 2009. http://hdl.handle.net/2005/1034.

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Abstract:

Multilevel converters are finding increased attention in industry and academia as the preferred choice of electronic power conversion for high power applications. They have a wide application area in a variety of industries involving transportation and energy management, a significant portion of which comprises of multilevel inverter fed induction motor drives. Multilevel inverters are ideally suitable for high power drives, since the switching frequency of the devices is limited for high power applications. In low power drives, the switching frequency is often in the range of tens of kHz, so

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48

Basu, Kaushik. "Minimization Of Torque Ripple In Space Vector PWM Based Induction Motor Drives." Thesis, 2005. https://etd.iisc.ac.in/handle/2005/1435.

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Pavan, Rayana Siva. "Study of Induction Motor Drive With Indirect Vector Control Using Space Vector Pulse Width Modulation." Thesis, 2017. http://ethesis.nitrkl.ac.in/8946/1/2017_MT_RSPavan.pdf.

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Induction motors are thee starting point to design an electrical drivee system which is widely used in many industrial applications. Inn modern control theory, different mathematical models describe induction motor according to thee employed control methods. Vector control strategy can bee applied to this electrical motor type inn symmetrical three phase version or in unsymmetrical two phase version. The operation of the induction motor can be analyzed similar to a DC motor through this control method. With the Joint progress of thee power electronics and numerical electronics it is possible t

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Basu, Kaushik. "Minimization Of Torque Ripple In Space Vector PWM Based Induction Motor Drives." Thesis, 2005. http://etd.iisc.ernet.in/handle/2005/1435.

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