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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 251 to 260 of 262 (0.041 seconds)Spelling suggestions: "subject:"pontage"" "subject:"contage""
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Implémentation et réalisation d'un amplificateur de puissance quatre quadrantsAbida, Ahmed January 2021 (has links) (PDF)
No description available.
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Oceňování ocelových konstrukcí / Valuation of Steel Construction.Charvát, Lukáš January 2013 (has links)
This diploma thesis mainly deals with valuation of steel structures from the perspective of an investor. Today there are several types of steel constructions, which assemble is partly done in workshop, so called “bridge-workshop”, and the rest of the assembling is done directly at the building site. That is the main difference from the construction industry. This fact makes financial valuation of whole thesis very difficult, because construction companies often do not state detailed breakdown of their activities. The main goal of this thesis is to suggest procedure how to value steel constructions in a phase of documentation processing, workshop production, transportation and technological equipment construction at the site.
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Stavebně technologické řešení překladiště v Prostějově / CONSTRUCTIVE - TECHNOLOGICAL PROJECT OF BUILDINGDvořák, Jan January 2014 (has links)
Master thesis and building technology solutions transshipment point in Prostejov covers technological studies throughout the construction, distribution structures on buildings, machinery equipment, time and financial plan. Furthermore, the thesis further focuses on one main structures of the whole building, object transshipment point. On this construction project is further developed such documentation and other documents that complement and prescribe requirements for faster, easier, safer, better and more technologically correct implementation of this phase.
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FC³ - 1st Fuel Cell Conference Chemnitz 2019 - Saubere Antriebe. Effizient Produziert.: Wissenschaftliche Beiträge und Präsentationen der ersten Brennstoffzellenkonferenz am 26. und 27. November 2019 in Chemnitzvon Unwerth, Thomas, Drossel, Welf-Guntram 25 November 2019 (has links)
Die erste Chemnitzer Brennstoffzellenkonferenz wurde vom Innovationscluster HZwo und dem Fraunhofer-Institut für Werkzeugmaschinen und Umformtechnik IWU durchgeführt. Ausgewählte Fachbeiträge und Präsentationen werden in Form eines Tagungsbandes veröffentlicht. / The first fuel cell conference was initiated by the innovation cluster HZwo and the Fraunhofer Institute for Machine Tools and Forming Technology. Selected lectures and presentations are published in the conference proceedings.
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Výrobní hala v Černé Hoře - vybrané části stavebně technologického projektu / Production Hall in Černá Hora – Selected Parts of Construction-technological ProjectRůznar, Daniel Unknown Date (has links)
The topic of my master's thesis are selected parts of the construction technology project Production Hall in Černá Hora with administrative part. Thesis contains engineering report, construction budget, time schedule for the whole construction, deployment of mechanisms and staff, project of construction site, study of the implementation of the main technological stages, the most appropriate construction mechanisms, routes of mechanisms, ranges and travels of mechanisms, financial and time schedule of the main building, technological specification for established pilots and montages of prefabricated skeleton, control and test plan, implementation of pilots, proposals of design of movement mechanisms, comparison of cladding of ventilated facades, skeleton assembly procedure diagrams and noise study of the construction site.
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Sensorgeführte Bewegungen stationärer RoboterWinkler, Alexander 17 June 2015 (has links)
Den Kern der vorliegenden Arbeit bilden sog. sensorgeführte Roboterbewegungen, d. h. die Nutzung von Informationen externer Sensoren zur Regelung des Roboters. Da gängige Industrierobotersysteme üblicherweise positionsgeregelt sind und seitens der Robotersteuerung lediglich der Zugriff zu den Sollwerten der Lageregelkreise erlaubt wird, kann auch der Regelkreis der sensorgeführten Roboterbewegung nur über den Lageregelkreis geschlossen werden. Aus diesem Grunde werden hier nur positionsbasierte Regelungsansätze verfolgt.
Die Kraft-/ Momentregelung gilt als eine der wichtigsten Varianten sensorgeführter Roboterbewegungen. Dementsprechend widmet sich auch ein großer Teil dieser Arbeit dem Thema, mit dem Ziel durch innovative und übersichtliche Regelalgorithmen die Akzeptanz der Kraft-/ Momentregelung in industriellen Produktionsprozessen zu erhöhen. Beginnend mit der eindimensionalen Kraftregelung führt der Weg dabei über Konzepte zur Konturenverfolgung und kraft-/ momentgeregelten Montageaufgaben hin zur Kooperation von Robotern.
In einem weiteren Teil wird ein Konzept zur Kollisionsvermeidung zwischen Robotern und Hindernissen präsentiert. Es basiert auf dem Ansatz der virtuellen Potential- bzw. Kraftfelder. Dabei ruft das künstliche Feld eine Bewegung des Roboters hervor, die vom Hindernis weg führt. Um das Feld zu erzeugen, wird die Methode der künstlichen Punktladungen entwickelt. Diese werden auf der Oberfläche eines Hindernisses platziert und generieren dann das virtuelle Kraftfeld. Die Platzierung kann z. B. mithilfe der CAD-Daten des Hindernisses erfolgen. Bei bewegten Objekten müssen alle Ladungspositionen ständig aktualisiert werden.
Für Lehr- und Präsentationszwecke ist das sog. inverse Pendel eine oft genutzte Regelstrecke. Sein Aufrichten und Stabilisieren ist auch mit Hilfe eines Industrieroboters möglich. Dazu beschäftigt sich ein Kapitel dieser Arbeit mit Fragen zur Modellbildung der Kombination inverses Pendel und Industrieroboter und mit Regelungskonzepten für das Aufschwingen und Balancieren. Letztendlichen wird in diesem Zusammenhang noch ein Visual-Servoing System präsentiert, dass den Neigungswinkel des Pendels mit einer Kamera bestimmt.
Alle hier vorgestellten Konzepte und Algorithmen werden Anhand von praktischen Experimenten verifiziert. / This work deals with so-called sensor guided robot motions, which means using the data of external sensors to control the robot. The control loop of the sensor guided robot motion can be only closed around the position control loop, because industrial robot systems usually work position controlled and only access to the desired positions is enabled. For this reason here only position based control approaches are regarded.
Force/torque control is a very important type of sensor guided robot motions. According to this, a good portion of this work deals with the subject of force/torque control. Thus, the acceptance of force/torque control in industrial production processes should be increased, by using innovative and clear control algorithms. For this purpose force control in one degree of freedom, contour-following, force/torque controlled assembling tasks and the cooperation between robots are discussed here in different chapters.
Thereafter, a concept to collision avoidance between robots and obstacles is presented. It uses the approach of virtual potential/force fields. In this case the artificial field induces a robot motion away from the obstacle. The method of artificial charges is developed to generate this field. For this purpose virtual charges are placed on the surface of the obstacles. Placing of the charges can be performed using e.g. CAD data of the obstacles. Having moving obstacles charge positions must be updated continuously.
The inverted pendulum is commonly used teaching students in control theory. The swinging up and the stabilization of the pendulum also can be performed by an industrial robot. One chapter of this work deals with modelling of the robot mounted inverted pendulum and control algorithms for its swinging up and its stabilization. Finally, in combination with the inverted pendulum a visual-servoing system is presented, which measures the pendulum inclination angle by camera.
All concepts introduced in this work are verified by practical experiments.
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Formwork-free, continuous production of variable frame elements for modular shell structuresIvaniuk, Egor, Mechtcherine, Viktor 10 November 2022 (has links)
Conventional construction of concrete shells involves a costly and time-consuming erection of custom formwork. An alternative approach that avoids this is an on-site assembly of shells from prefabricated
modules. This article presents a new, highly automated method for the production of such modules. The proposed method combines the technology of full-width 3D concrete printing using strain-hardening cement-based composite and the technology of robotic textile mesh production from mineral-impregnated carbon yarns.
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Stavebně technologický projekt haly ADS s.r.o. Větřkovice / Building Construction Project - Implementation of Production Hall ADS s.r.o. VětřkoviceRáb, Jakub January 2019 (has links)
The subject of my master's thesis is construction technological project of the hall ADS s.r.o. Větřkovice. The work includes technical report of construction technological project, facilities of construction zone, solving traffic routes from the production to the place of construction, study of the implementation of the main technological stages of the building SO02, the most appropriate machine assembly, technological specification for drilled piles and for montage of prefabricated reinforced concrete skeleton, control and test plan, schedule of work, itemized budget, plan of the safety and health protection during work, proposals of design of movement mechanisms and time and financial discretion of realization of the reinforced areas of the production hall area.
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TU-Spektrum "Sonderausgabe Auto & Verkehr" 2004, Magazin der Technischen Universität ChemnitzSteinebach, Mario, Friebel, Alexander, Häckel-Riffler, Christine, Tzschucke, Volker, Dötzel, Wolfram, Müller, Egon, Gäse, Thomas, Hildebrand, Torsten, Weidlich, Dieter, Hausstädtler, Uwe, Köchel, Peter, Matthes, Klaus-Jürgen, Kohler, Thomas, Neugebauer, Reimund, Köhler, Eberhard, Meyer, Lothar W., Mennig, Günter, Michael, Hannes, Tenberge, Peter, Fischer, Herwig, Frei, Bertram, Fischer, Andreas, Hoffmann, Karl Heinz, Müller, Dietmar, Geßner, Thomas, Baum, Mario, Protzel, Peter, Krems, Josef F., Wanielik, Gerd, Scheunert, Ulrich, Maißer, Peter, Hendel, Klaus, Mählisch, Mirko, Brunnett, Guido, Spanner-Ulmer, Birgit, Richter, Frank, Zahn, Dietrich R.T., Becker, Bettina M., Tytko, Dagmar, Thießen, Friedrich, Luderer, Bernd, Gerlach, Lutz, Pawlowsky, Peter, Moldaschl, Manfred F., Schulz, Klaus-Peter, Zanger, Cornelia, Reichel, Ina, Jurczek, Peter, Bocklisch, Steffen, Mehnert, Elke 01 July 2004 (has links) (PDF)
3 mal im Jahr erscheinende Zeitschrift über aktuelle Themen der TU Chemnitz
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Cinema ao vivo e experiências audiovisuais em tempo real / -Molina Júnior, Jair Sanches 15 September 2017 (has links)
Refletir sobre as experiências com imagens e sons em tempo real é pensar em uma ampla gama de possibilidades e experiências pela humanidade, desde os tempos mais remotos. Pelo fato dessas experiências audiovisuais em tempo real serem numerosas no tempo e no espaço, e já amplamente citada em diferentes estudos, esta apresentação tem por objetivo realizar um recorte mais restrito às experiências audiovisuais em tempo real no campo cinematográfico contemporâneo: uma arte, meio e processo em expansão que culmina na existência de um fenômeno semiótico, realizado principalmente através de modos experimentais com a presença do(s) autor(es) concebendo a experiência audiovisual, conjuntamente ao aparato tecnológico e ao público, todos participantes da criação e exibição da obra audiovisual no mesmo tempo em que ela ocorre, em transmissão direta para a tela de cinema, monitores, telas digitais ou espaços arquitetônicos. Com base em obras audiovisuais realizadas entre 2007 a 2017 desenvolveremos uma reflexão e análise das poéticas e técnicas das experiências audiovisuais em tempo real, de maneira a compreender com um olhar mais atento as possibilidades criativas e contribuir com a reflexão sobre estes formatos do audiovisual contemporâneo, cujos meios e processos estão em contínua expansão de suas fronteiras. Em estética do cinema, esta pesquisa segue em continuidade aos estudos e práticas do cinema experimental e em sua vértice ao cinema expandido. / Reflecting about real-time imagery and sounds experiences is thinking about a wide range of possibilities and experiences for humanity, from the earliest times. Because the real-time audiovisual experiences are numerous in time and space, and already widely quoted in different studies, this presentation aims to make a more restricted cut-off to real-time audiovisual experiences in the contemporary cinematographic field: an art, medium and an expanding process that culminates in the existence of a semiotic phenomenon, performed mainly through experimental modes with the presence of the author(s) directing the audiovisual experience in real-time, together with the technological apparatus, the cast, and the public, all participants in the creation and exhibition of the audiovisual work at the same time as it occurs, in direct transmission to the cinema screen, monitors, digital screens or architectural spaces. Based on audiovisual works carried out between 2007 and 2017 we will develop a reflection and analysis of the poetics and techniques of audiovisual experiences in real-time, in order to understand with a closer look the creatives possibilities in live cinema and contribute with reflection on these forms of the contemporary audiovisual, whose means and processes are in continuous expansion of its borders. In aesthetics of the cinema, this research follows in continuity to the studies and practices of the experimental cinema, and in its vertex to the expanded cinema.
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