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  • About
  • 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.
1

3D tisk optomechanických zařízení / 3D printed opto-mechanical devices

Šremrová, Vendula January 2021 (has links)
Optomechanical components are widely used in many optical experiments. This diploma thesis deals with design and manufacturing optomechanical components using 3D print technology. These are cheaper alternatives of commercial devices. In addition to 3D printed parts, minimum number of other components are used to assemble functional devices. Using simple experimental setups, the manufactured components are evaluated and compared with commercially available ones. The results show that they can be used in applications where high accuracy is not required. The second part is devoted to the design and manufacturing of a polarimeter as a mechanism combining electrical and mechanical components with 3D printed parts. The polarimeter is used to measure some properties of polarized light.
2

Proyecto de robot de inspección de cañería submarina

Fernandez da Costa, Alejandro Marcelo January 2017 (has links)
Offshore oil production presents major challenges due to extreme environmental conditions. With present state of the art robotics, precision mechanics and automation it is now possible to provide solutions to those working conditions. The present work is part of a solution to the problem of the unblocking a subsea oil pipeline of small diameter and extensive length by designing and manufacturing a robot capable of moving inside the pipeline. Based on the previous study of an interdisciplinary group, the implementation of an umbilical cable was defined with the purpose of assuring the supply of electrical power for the robot’s energy requirements, control signals and a mechanical link to avoid the possibility of getting stuck. Similarly, the robot's movement strategy was defined based on a high reliability mechanism, capable of overcoming the great tension resulting from the interaction of the long umbilical cable with the inside of the pipe. In this work, the mechanical design is performed to implement a robot capable of overcoming big cable tensions with small components, integrating commercial components and others custom made. A solution was implemented to convert the electric power received through the cable to the mechanical power in the form required by the displacement mechanism. For this, a detailed engineering design is presented that integrates a high performance electric motor, a two-stage planetary gear transmission for high reduction ratio, a power split transmission driven by disc clutches and a mechanical power distribution stage required by the mechanism responsible for the displacement. / La producción de petróleo offshore presenta grandes desafíos por las condiciones en que se lleva a cabo, actualmente es posible darle solución con la ayuda de la robótica, la mecánica de precisión y la automatización. El presente trabajo es parte de una solución al problema de la desobstrucción en una tubería de petróleo submarina de pequeño diámetro y largo tendido mediante el diseño y la construcción de un robot capaz de trasladarse por el interior de la misma. En base al estudio previo de un grupo interdisciplinario se definió la implementación de un cable umbilical con el propósito de asegurar el suministro de potencia eléctrica para los requerimientos de energía de robot, el enlace de señales destinadas al control y un vínculo mecánico para proveer seguridad ante un eventual desperfecto. Similarmente se definió la estrategia de movimiento del robot en base a un mecanismo de alta confiabilidad, capaz de vencer una gran tensión producto de la interacción del largo cable umbilical con el interior de la tubería. En este trabajo se realiza el diseño mecánico para implementar un robot capaz de realizar grandes esfuerzos con componentes de tamaño reducido, integrando componentes comerciales y otros hechos a medida. Para ello, se implementó una solución para convertir la potencia eléctrica recibida a través del cable a la potencia mecánica en la forma requerida por el mecanismo que da lugar al movimiento. Para dicha solución se presenta un diseño detallado que integra un motor eléctrico de alto desempeño, una transmisión planetaria reductora de dos etapas, una transmisión inversora accionada por embragues de discos y una etapa de distribución de potencia mecánica requerida por el mecanismo responsable del movimiento.
3

Proyecto de robot de inspección de cañería submarina

Fernandez da Costa, Alejandro Marcelo January 2017 (has links)
Offshore oil production presents major challenges due to extreme environmental conditions. With present state of the art robotics, precision mechanics and automation it is now possible to provide solutions to those working conditions. The present work is part of a solution to the problem of the unblocking a subsea oil pipeline of small diameter and extensive length by designing and manufacturing a robot capable of moving inside the pipeline. Based on the previous study of an interdisciplinary group, the implementation of an umbilical cable was defined with the purpose of assuring the supply of electrical power for the robot’s energy requirements, control signals and a mechanical link to avoid the possibility of getting stuck. Similarly, the robot's movement strategy was defined based on a high reliability mechanism, capable of overcoming the great tension resulting from the interaction of the long umbilical cable with the inside of the pipe. In this work, the mechanical design is performed to implement a robot capable of overcoming big cable tensions with small components, integrating commercial components and others custom made. A solution was implemented to convert the electric power received through the cable to the mechanical power in the form required by the displacement mechanism. For this, a detailed engineering design is presented that integrates a high performance electric motor, a two-stage planetary gear transmission for high reduction ratio, a power split transmission driven by disc clutches and a mechanical power distribution stage required by the mechanism responsible for the displacement. / La producción de petróleo offshore presenta grandes desafíos por las condiciones en que se lleva a cabo, actualmente es posible darle solución con la ayuda de la robótica, la mecánica de precisión y la automatización. El presente trabajo es parte de una solución al problema de la desobstrucción en una tubería de petróleo submarina de pequeño diámetro y largo tendido mediante el diseño y la construcción de un robot capaz de trasladarse por el interior de la misma. En base al estudio previo de un grupo interdisciplinario se definió la implementación de un cable umbilical con el propósito de asegurar el suministro de potencia eléctrica para los requerimientos de energía de robot, el enlace de señales destinadas al control y un vínculo mecánico para proveer seguridad ante un eventual desperfecto. Similarmente se definió la estrategia de movimiento del robot en base a un mecanismo de alta confiabilidad, capaz de vencer una gran tensión producto de la interacción del largo cable umbilical con el interior de la tubería. En este trabajo se realiza el diseño mecánico para implementar un robot capaz de realizar grandes esfuerzos con componentes de tamaño reducido, integrando componentes comerciales y otros hechos a medida. Para ello, se implementó una solución para convertir la potencia eléctrica recibida a través del cable a la potencia mecánica en la forma requerida por el mecanismo que da lugar al movimiento. Para dicha solución se presenta un diseño detallado que integra un motor eléctrico de alto desempeño, una transmisión planetaria reductora de dos etapas, una transmisión inversora accionada por embragues de discos y una etapa de distribución de potencia mecánica requerida por el mecanismo responsable del movimiento.
4

Proyecto de robot de inspección de cañería submarina

Fernandez da Costa, Alejandro Marcelo January 2017 (has links)
Offshore oil production presents major challenges due to extreme environmental conditions. With present state of the art robotics, precision mechanics and automation it is now possible to provide solutions to those working conditions. The present work is part of a solution to the problem of the unblocking a subsea oil pipeline of small diameter and extensive length by designing and manufacturing a robot capable of moving inside the pipeline. Based on the previous study of an interdisciplinary group, the implementation of an umbilical cable was defined with the purpose of assuring the supply of electrical power for the robot’s energy requirements, control signals and a mechanical link to avoid the possibility of getting stuck. Similarly, the robot's movement strategy was defined based on a high reliability mechanism, capable of overcoming the great tension resulting from the interaction of the long umbilical cable with the inside of the pipe. In this work, the mechanical design is performed to implement a robot capable of overcoming big cable tensions with small components, integrating commercial components and others custom made. A solution was implemented to convert the electric power received through the cable to the mechanical power in the form required by the displacement mechanism. For this, a detailed engineering design is presented that integrates a high performance electric motor, a two-stage planetary gear transmission for high reduction ratio, a power split transmission driven by disc clutches and a mechanical power distribution stage required by the mechanism responsible for the displacement. / La producción de petróleo offshore presenta grandes desafíos por las condiciones en que se lleva a cabo, actualmente es posible darle solución con la ayuda de la robótica, la mecánica de precisión y la automatización. El presente trabajo es parte de una solución al problema de la desobstrucción en una tubería de petróleo submarina de pequeño diámetro y largo tendido mediante el diseño y la construcción de un robot capaz de trasladarse por el interior de la misma. En base al estudio previo de un grupo interdisciplinario se definió la implementación de un cable umbilical con el propósito de asegurar el suministro de potencia eléctrica para los requerimientos de energía de robot, el enlace de señales destinadas al control y un vínculo mecánico para proveer seguridad ante un eventual desperfecto. Similarmente se definió la estrategia de movimiento del robot en base a un mecanismo de alta confiabilidad, capaz de vencer una gran tensión producto de la interacción del largo cable umbilical con el interior de la tubería. En este trabajo se realiza el diseño mecánico para implementar un robot capaz de realizar grandes esfuerzos con componentes de tamaño reducido, integrando componentes comerciales y otros hechos a medida. Para ello, se implementó una solución para convertir la potencia eléctrica recibida a través del cable a la potencia mecánica en la forma requerida por el mecanismo que da lugar al movimiento. Para dicha solución se presenta un diseño detallado que integra un motor eléctrico de alto desempeño, una transmisión planetaria reductora de dos etapas, una transmisión inversora accionada por embragues de discos y una etapa de distribución de potencia mecánica requerida por el mecanismo responsable del movimiento.
5

Advanced Driving Systems / Innovative Antriebssysteme

Maisser, Peter, Tenberge, Peter 04 November 2002 (has links) (PDF)
Modern product development is a highly complex process characterized by a pronounced interdisciplinary cooperation. Interdisciplinary cooperation accompanied with firm strategic and integrating concep ts leads to innovation potentials in context of cooperative product engineering. The phrase "Mechatronics" represents exactly these novel methodological concepts in the developing process of innova tive products with highly innovative functionality and structure. The concept Mechatronics has been exemplary proven successfully in high-tech sectors. A glance at the automobile or high speed train technology gives an impressive and pursuing figure of the far reach ing Mechatronics philosophy. SME in general have not enough research and development resources to their disposal in order to comply with the ever increasing market demands. Ways out of this dilemma are strategic alliances on one hand and the education of young "Mechatronicans" at universities on the other hand. ISOM 2002 aims to contribute by inviting SME representatives and students from universities and supplementary instit utions in Saxony. The key words of Mechatronics are sensors and actuators, integrated control strategies, modeling and simulation, effective design, safety and reliability. The symposium focuses on state-of-the-art in Mechatronics, especially regarding to controlled high precision systems and particularly to novel electromechanical driving systems. It will point toward future research directions in these subjects. ISOM 2002 is intended as a forum for those engineers and researchers from universities and industry in and outside Europe who actively participate in the young field of Mechatronics and uphold the old spirit of exchanging theoretical and practical results within the scientific community. / Die moderne industrielle Produktentwicklung ist ein hochkomplexer Prozess, der gekennzeichnet ist durch eine stark ausgeprägte interdisziplinäre Arbeit. Diese Interdisziplinarität gepaart mit fundiert en Strategie- und Integrationskonzepten führt zu erheblichen Innovationspotentialen im kooperativen Produkt-Engineering. Das Kunstwort Mechatronik steht genau für dieses neuartige methodologische Konz ept im Entwicklungsprozess innovativer Produkte mit einem hohen Integrationsgrad von Funktionalität und Struktur. Die Industrie hat in vielen High-Tech-Bereichen das Konzept Mechatronik beispielhaft realisiert. Ein Blick auf die Automobil- und Hochgeschwindigkeitszugtechnik zeigt in eindrucksvoller Weise die Tr agfähigkeit der Mechatronik-Philosophie. KMU verfügen oft nicht über das erforderliche FuE-Personal und die entsprechenden materiellen Ressourcen, um das enorme Entwicklungstempo mitzugehen. Wege zur Überwindung dieser Defizite sind strategi sche Allianzen und eine gezielte Ausbildung von Mechatronikern an Hoch- und Fachschulen. Auch hierzu soll das Symposium einen Beitrag leisten, indem insbesondere Vertreter von KMU und Studenten der ga stgebenden Universität sowie anderer Hochschuleinrichtungen Sachsens eingeladen wurden. Zu den Schlüsselworten in der Mechatronik gehören Sensoren und Aktoren, integrierte Steuerstrategien, Modellierung und Simulation, effektiver Entwurf, Sicherheit und Zuverlässigkeit. Der derzeitige Sta nd der Mechatronikforschung, vor allem mit Blick auf hochgenaue, gesteuerte mechatronische Systeme und insbesondere neuartige integrierte elektromechanische Antriebssysteme, soll im Mittelpunkt dieses Symposiums stehen. Auch zukünftige Forschungsaufgaben für die Grundlagen- und anwendungsorientierte Forschung in den genannten Themenbereichen sollen aufgezeigt werden. Das Symposium versteht sich als Treffpunkt für diejenigen Forscher und Entwickler, die in Europa an Hochschulen ebenso wie in der Industrie auf diesem Gebiet aktiv sind und sich auf einen Austausch th eoretischer, experimenteller und anwendungsspezifischer Erfahrungen, die bei der wissenschaftlichen Arbeit auf dem noch jungen Gebiet der Mechatronik erlangt wurden, freuen.
6

Advanced Driving Systems: Innovative Antriebssysteme

Maisser, Peter, Tenberge, Peter 04 November 2002 (has links)
Modern product development is a highly complex process characterized by a pronounced interdisciplinary cooperation. Interdisciplinary cooperation accompanied with firm strategic and integrating concep ts leads to innovation potentials in context of cooperative product engineering. The phrase "Mechatronics" represents exactly these novel methodological concepts in the developing process of innova tive products with highly innovative functionality and structure. The concept Mechatronics has been exemplary proven successfully in high-tech sectors. A glance at the automobile or high speed train technology gives an impressive and pursuing figure of the far reach ing Mechatronics philosophy. SME in general have not enough research and development resources to their disposal in order to comply with the ever increasing market demands. Ways out of this dilemma are strategic alliances on one hand and the education of young "Mechatronicans" at universities on the other hand. ISOM 2002 aims to contribute by inviting SME representatives and students from universities and supplementary instit utions in Saxony. The key words of Mechatronics are sensors and actuators, integrated control strategies, modeling and simulation, effective design, safety and reliability. The symposium focuses on state-of-the-art in Mechatronics, especially regarding to controlled high precision systems and particularly to novel electromechanical driving systems. It will point toward future research directions in these subjects. ISOM 2002 is intended as a forum for those engineers and researchers from universities and industry in and outside Europe who actively participate in the young field of Mechatronics and uphold the old spirit of exchanging theoretical and practical results within the scientific community. / Die moderne industrielle Produktentwicklung ist ein hochkomplexer Prozess, der gekennzeichnet ist durch eine stark ausgeprägte interdisziplinäre Arbeit. Diese Interdisziplinarität gepaart mit fundiert en Strategie- und Integrationskonzepten führt zu erheblichen Innovationspotentialen im kooperativen Produkt-Engineering. Das Kunstwort Mechatronik steht genau für dieses neuartige methodologische Konz ept im Entwicklungsprozess innovativer Produkte mit einem hohen Integrationsgrad von Funktionalität und Struktur. Die Industrie hat in vielen High-Tech-Bereichen das Konzept Mechatronik beispielhaft realisiert. Ein Blick auf die Automobil- und Hochgeschwindigkeitszugtechnik zeigt in eindrucksvoller Weise die Tr agfähigkeit der Mechatronik-Philosophie. KMU verfügen oft nicht über das erforderliche FuE-Personal und die entsprechenden materiellen Ressourcen, um das enorme Entwicklungstempo mitzugehen. Wege zur Überwindung dieser Defizite sind strategi sche Allianzen und eine gezielte Ausbildung von Mechatronikern an Hoch- und Fachschulen. Auch hierzu soll das Symposium einen Beitrag leisten, indem insbesondere Vertreter von KMU und Studenten der ga stgebenden Universität sowie anderer Hochschuleinrichtungen Sachsens eingeladen wurden. Zu den Schlüsselworten in der Mechatronik gehören Sensoren und Aktoren, integrierte Steuerstrategien, Modellierung und Simulation, effektiver Entwurf, Sicherheit und Zuverlässigkeit. Der derzeitige Sta nd der Mechatronikforschung, vor allem mit Blick auf hochgenaue, gesteuerte mechatronische Systeme und insbesondere neuartige integrierte elektromechanische Antriebssysteme, soll im Mittelpunkt dieses Symposiums stehen. Auch zukünftige Forschungsaufgaben für die Grundlagen- und anwendungsorientierte Forschung in den genannten Themenbereichen sollen aufgezeigt werden. Das Symposium versteht sich als Treffpunkt für diejenigen Forscher und Entwickler, die in Europa an Hochschulen ebenso wie in der Industrie auf diesem Gebiet aktiv sind und sich auf einen Austausch th eoretischer, experimenteller und anwendungsspezifischer Erfahrungen, die bei der wissenschaftlichen Arbeit auf dem noch jungen Gebiet der Mechatronik erlangt wurden, freuen.
7

Les écoles d' horlogerie de Besançon : une contribution décisive au développement industriel local et régional (1793-1974) / The Besancon watchmaking schools

Briselance, Claude 28 October 2015 (has links)
L’Histoire des écoles d’horlogerie de Besançon est inhérente à la naissance et à la continuité d’une industrie spécifique très localisée sur un territoire. Avec elles nous partons de l’ère « proto-industrielle » qui plonge ses racines dans les idéaux révolutionnaires de 1793 pour aboutir aux bouleversements technologiques de l’électronique et du « quartz » des années 1970… S’inscrivant sur la longue durée, trois « écoles » vont se succéder. Pour répondre aux attentes d’une industrie horlogère qui doit constamment faire face aux évolutions techniques, chacune à sa manière, va innover pour constituer un « corpus » original de formation qui n’est pas sans bousculer les rites et usages du temps. Si les deux premières « écoles » eurent une durée de vie limitée, la dernière entité, née en 1861 de la volonté municipale, va pendant plus d’un siècle, accompagner toute une ville (et sa région) dans sa réussite industrielle. Dès sa création, et au fur et à mesure des adaptations qu’elle a su mettre en place, par la qualité et la spécificité des formations dispensées, elle va irriguer de ses élèves toute une industrie toujours à l’affût de personnels qualifiés. Au plan national elle va diffuser le nom de Besançon comme « capitale française de l’horlogerie » en formant nombre d’horlogers-rhabilleurs tenant boutiques et autres ateliers de réparation par tout le territoire… Elle va servir de référence pour implanter dans la Cité des laboratoires de recherche et d’enseignement supérieur : un Observatoire chronométrique, une École d’ingénieurs, un Centre d’études horlogères et de développement industriel (Cétéhor)… Elle va contribuer à la diversification industrielle de la ville dans des domaines connexes à l’horlogerie, notamment dans le découpage, la micromécanique, l’appareillage et les microtechniques… Nationalisée en 1891, elle fait dès lors partie de la petite élite des Écoles Nationales Professionnelles (par assimilation), qui vont marquer le développement industriel du Pays. En 1933, quand elle intègre ses nouveaux locaux, par le nombre et l’originalité de ses filières (de l’ouvrier qualifié à l’ingénieur), par sa dotation en matériels modernes, elle est signalée comme étant le « premier établissement de l’enseignement technique » en France. Le cheminement de cette dernière école fait aussi ressortir une histoire « humaine », « prosopographique », qui met en exergue les nombreux anciens élèves qui se sont lancés avec grande réussite dans la création d’entreprises. Restés fidèles à leur école, ils ont contribué au renom et au développement de la richesse économique de la cité et de sa région… Avec ces écoles d’horlogerie, on aborde enfin l’histoire de l’Enseignement Technique en France. Pour répondre à la demande d’une industrie horlogère en pleine croissance qui déplorait les carences de l’apprentissage en atelier, elles ont été pionnières en ouvrant la voie de « la scolarisation » de la formation professionnelle. Par leurs innovations pédagogiques, et soutenues par les Anciens Élèves, elles ont su établir un lien « École-Entreprise » des plus fructueux qui marque encore la mémoire collective des Bisontins…En 1974 elle perd toute référence à l’horlogerie pour devenir le Lycée Jules Haag. Le temps de l’histoire est désormais advenu pour tenter de comprendre ce qui a fait la force et la réussite de ces « Écoles d’horlogerie » dans leur participation active, sur la durée, à la prospérité économique et industrielle d’une ville et de sa région… / The history of the watchmaking schools in Besançon is part of the birth and continuous development of a specific industry in a very limited sector of the French territory. When studying those schools we start at the « protoindustrial » time with its roots in the revolutionary ideals of 1793 and end up with the technological upheavals of electronics and the « quartz » technology in the 1970s. Three « schools » followed one another over the long term. Each school aimed at satisfying the demands of a watchmakng industry confronted to rapidly changing technical evolutions ; so it innovated in its own way by creating an original « corpus » in the students training and most of the time upset the practices and common ideas of the time. If the first two « schools » had a limited lifespan, the last one created in 1861 by the town council itself has been supporting the industrial growth of the city and the surrounding region. Since its foundation it has stuck to the industrial reality by placing the emphasis on high standards and opening new specific branches whenever necessary, thus answering the needs of firms always looking for highly qualified staff. For a large number of French people Besançon became the « capital town of the watchmaking industry » thanks to the shops or repair workshops kept by Besançon-trained former students all over France… It served as a background to set up research and university laboratories in the city : Observatoire Chronométrique, Ecole d’Ingénieurs, Centre d’Etudes Horlogères et de Développement Industriel (Cétéhor)… It contributed to the industrial diversification of the town in fields related to watchmaking such as mechanical cutting, micromechanics, equipment and microtechniques. It was nationalized in 1891 and then belonged to the very small elite goup of the Professional National Schools that influenced the future industrial development of the country. In 1933 it moved into sparkling-new premises and was acknowledged as the flagship of technical education in France : it offered a large number of innovating courses ranging from the skilled worker to the engineer and was granted the latest equipments in every field. The path of this new school also enhanced a « humane » and « prosopographical » history ; it highlighted the part played by the numerous former students who created their own successful businesses. Being faithful to their old school they contributed to the renown and economic growth and prosperity of the city and its region… Beyond the local impact we must regard the history of the watchmaking schools as an important part of the history of Technical Education in France. To meet the needs of a soaring watchmaking industry they opened the way to the transfer of professional training from apprenticeship in workshops with its observed shortcomings to education in technical high schools. Their pedagogical innovations, the strong support of their former students created a vital school-business link that still lives on in the collective memory of the town inhabitants.In 1974 its name changed to Lycée Jules Haag thus losing any reference to watchmaking. Let us now try and understand the strong influence and success of those watchmaking schools, the active part they played in the economic industrial prosperity of a town and its surrounding region…

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