To see the other types of publications on this topic, follow the link: CAD tools for microelectromechanical systems.
Dissertations / Theses on the topic 'CAD tools for microelectromechanical systems'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 15 dissertations / theses for your research on the topic 'CAD tools for microelectromechanical systems.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
1
Ramaswamy, Deepak 1974. "Simulation tools for microelectromechanical systems." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/8625.
Full textAbstract:
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2001.Includes bibliographical references (p. 101-104).
In this thesis efficient techniques to solve complex 3-D electromechanical problems are developed. Finite element discretization of complex structures such as the micromirror lead to thousands of internal degrees of freedom. Their mostly rigid motion is exploited leading to a mixed rigid-elastic formulation. This formulation's advantage is apparent when it is incorporated in an efficient coupled domain simulation technique and examples are presented exploring geometry effects on device behavior. Then for system level simulation where full device simulation costs add up we need models with much reduced order with little degradation in accuracy. We describe a model reduction formulation for the electromechanical problem based on implicit techniques which accurately capture the original model behavior.
by Deepak Ramaswamy.
Ph.D.
2
Pinto, Coelho Carlos (Carlos Freire da Silva). "Efficient tools for the design and simulation of microelectromechanical and microfluidic systems." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/42234.
Full textAbstract:
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2007.Includes bibliographical references (p. 131-136).
In air-packaged surface micromachined devices and microfluidic devices the surface to volume ratio is such that drag forces play a very important role in device behavior and performance. Especially for surface micromachined devices, the amount of drag is greatly influenced by the presence of the nearby substrate. In this thesis a precorrected FFT accelerated boundary element method specialized for calculating the drag force on structures above a substrate is presented. The method uses the Green's function for Stokes flow bounded by an infinite plane to implicitly represent the device substrate, requiring a number of modifications to the precorrected FFT algorithm. To calculate the velocity due to force distribution on a panel near a substrate an analytical panel integration algorithm was also developed. Computational results demonstrate that the use of the implicit representation of the substrate reduces computation time and memory while increasing the solution accuracy. The results also demonstrate that surprisingly, and unfortunately, even though representing the substrate implicitly has many benefits it does not completely decouple discretization fineness from distance to the substrate. To simulate the time dependent behavior of micromechanical and microfluidic systems, a stable velocity implicit time stepping scheme coupling the precorrected FFT solver with rigid body dynamics was introduced and demonstrated. The ODE library was integrated with the solver to enable the simulation of systems with collisions, contacts and friction. Several techniques for speeding up the calculation of each time step were presented and tested. The time integration algorithm was successfully used to simulate the behavior of several real-world microfluidic devices.
by Carlos Pinto Coelho.
Ph.D.
3
McGregor, Gordon Charles. "CAD tools and techniques for the development of dynamically reconfigurable systems." Thesis, University of Strathclyde, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.405543.
Full text
4
Wang, Weihua. "Tools for flexible electrochemical microfabrication /." Thesis, Connect to this title online; UW restricted, 2002. http://hdl.handle.net/1773/9854.
Full text
5
Chen, Kun. "Haptic system for collision-free 5-axis tool path generation /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?MECH%202006%20CHENK.
Full text
6
Bergsten, Susan. "Industrialised building systems : vertical extension of existing buildings by use of light gauge steel framing systems and 4D CAD tools." Licentiate thesis, Luleå, 2005. http://epubl.luth.se/1402-1757/2005/23.
Full text
7
Tabani, Haroon R. "Application of NC machining of complex surfaces to streamlined extrusion dies." Ohio : Ohio University, 1989. http://www.ohiolink.edu/etd/view.cgi?ohiou1182523937.
Full text
8
Li, Zhaoyi, and n/a. "Analysis and Design of Virtual Reality Visualization for a Micro Electro Mechanical Systems (MEMS) CAD Tool." Griffith University. School of Information and Communication Technology, 2005. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20060731.121340.
Full textAbstract:
Since the proliferation of CAD tools, visualizations have gained importance.. They provide invaluable visual feedback at the time of design, regardless whether it is fbi civil engineering or electronic circuit design-layout. Typically dynamic visualizations are produced in a two phase process: the calculation of positions and rendering of the image and its presentation as an animated video clip. This is a slow process that is unsuitable fbr interactive CAD visualizations, because the former two require finite element analysis Faster hardware eases the problem, but does not overcome it, because the algorithms are still too slow. Our MEMS CAD project works towards methods and techniques that are suitable for interactive design, with faster methods. The purpose of this PhD thesis is to contribute to the design of an interactive virtual prototyping of Micro Electro Mechanical Systems (MEMS) This research comprises the analysis of the visualization techniques that are appropriate for these tasks and identifying the difficulties that need to be overcome to be able to offer a MEMS design engineer a meaningful and interactive CAD design environment Such a VR-CAD system is being built in our research group with many participants in the team. Two particular problems are being addressed by presenting algorithms for truthful VR visualization methods: one is for displaying objects that are different in size on the computer screen. The other is modelling unsynchronized motion dynamics, that is different objects moving simultaneously at very high and vety low speed, by proposing stroboscopic simulation to present their dynamics on the screen They require specific size scaling and time scaling and filtering. It is these issues and challenges which make the design of a MEMS CAD tool different from other CAD tools. In the thesis I present algorithms for displaying animated virtual reality for MEMS virtual prototyping in a physically truthful way by using the simulated stroboscopic illumination to filter animated images to make it possible to show unsynchronized motion.. A scaling method was used to show or hide objects which cannot be shown simultaneously on the computer screen because of their large difference in size. The visualization of objects being designed and their animations is done with much consideration of visual perception and computer capability, which is rising attention, but not too often mentioned in the visualization domain.
9
Seo, Chung-Seok. "Physical Design of Optoelectronic System-on-a-Chip/Package Using Electrical and Optical Interconnects: CAD Tools and Algorithms." Diss., Available online, Georgia Institute of Technology, 2005, 2004. http://etd.gatech.edu/theses/available/etd-11102004-150844/.
Full textAbstract:
Thesis (Ph. D.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2005.David E. Schimmel, Committee Member ; C.P. Wong, Committee Member ; John A. Buck, Committee Member ; Abhijit Chatterjee, Committee Chair ; Madhavan Swaminathan, Committee Member. Vita. Includes bibliographical references.
10
Vidal, Tabata. "Concepção de proteses mioeletricos de membros superiores baseado no estudo fisiologico." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264737.
Full textAbstract:
Orientador: Helder Anibal HerminiDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica
Made available in DSpace on 2018-08-11T07:22:27Z (GMT). No. of bitstreams: 1 Vidal_Tabata_M.pdf: 5227439 bytes, checksum: 003d20540fa55512408c2b363171f23c (MD5) Previous issue date: 2008
Resumo: O objetivo deste trabalho foi revisar na literatura os desenvolvimentos da aplicação das tecnologias envolvidas em automação dedicadas às próteses mioelétricas de membros superiores, desde os primeiros trabalhos implementados no período pós-Segunda Guerra Mundial até as soluções tecnológicas atualmente utilizadas. O conceito de prótese mioelétrica envolve a aquisição e tratamento do sinal mioelétrico de um membro residual que é usado para acionar um atuador que ativará a ferramenta terminal. Objetivando a elaboração de uma solução compatível e aplicável harmonicamente ao sistema orgânico, foram realizados estudos da anatomia, da fisiologia articular dos membros superiores, da natureza e características do sinal mioelétrico, além das tecnologias envolvidas para a concepção de protótipos mecatrônicos, tais como técnicas de CAD-CAE-CAM e a geração de circuitos eletrônicos dedicados à coleta e tratamento de sinais mioelétricos. Para validar o desenvolvimento teórico, três protótipos da ferramenta terminal foram confeccionados, sendo testados em nível de bancada
Abstract: The goal of this work was to review the specialized literature for the development of technological applications connected with automation of myoelectrical prosthesis of upper limbs throughout the years, from World War 2 post-war solutions to the technology currently applied. The concept of myoelectrical prosthesis presupposes implies the acquisition and treatment of the myoelectrical signal of a residual limb which is used to start an actuator, which in turn activates the terminal tool. Aiming at encountering a solution that could be both compatible and harmoniously applicable to the human body, the author engaged in studying anatomy, upper limbs articular physiology, the nature and characteristics of the myoelectrical signal in addition to the technologies utilized to conceive mechatronic prototypes, i.e. CAD-CAE-CAM and the creation of dedicated electronic circuits to collect and process the myoelectrical signals. To validate the theoretical foundation of this project, three prototypes of terminal tools were manufactured and bench-tested.
Mestrado
Mecanica dos Sólidos e Projeto Mecanico
Mestre em Engenharia Mecânica
11
Du, Plooy Elsje. "3-D Computer-aided Design (CAD) and Computer Numerical Control (CNC) milling : An alternative to traditional ceramics master moulding technology." Thesis, Bloemfontein: Central University of Technology, Free State, 2014. http://hdl.handle.net/11462/236.
Full textAbstract:
Thesis (M. Tech. (Design and Studio Art)) -- Central University of Technology, Free State, 2014This quantitative research project investigates the utilization of emerging technologies within the arts with a view on establishing an interdisciplinary approach between ceramics and engineering. The traditional manufacturing method of producing master moulds is a time-consuming process for the studio ceramicist. This study explores whether computer-aided design (CAD) and computer numerical control (CNC) milling can accelerate the design and manufacturing process when developing master moulds as an alternative to using traditional methods. It investigates whether SolidWorks® can be applied as a suitable CAD design tool for the creation of ceramic vessel forms in order to reduce the design development time frame. It furthermore investigates whether CNC milling can be used as a viable manufacturing technology for the making of vessel prototypes and master moulds from CAD data, the overall objective being to improve and accelerate the plaster of Paris master mould manufacturing process for the batch production of studio-based ceramic artefacts. Findings from this study indicate that emerging technologies have a lot to offer the artist when it comes to providing new possibilities for the creation of artefacts and that SolidWorks® and CNC milling can be utilized as a viable interdisciplinary manufacturing approach between ceramics and digital manufacturing technologies.
12
Serim, Baris. "Designing for Engagement: Using indirect manipulation to support form exploration in 3D modeling." Thesis, Malmö högskola, Fakulteten för kultur och samhälle (KS), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-22790.
Full textAbstract:
This thesis aims to study the design possibilities for supporting explorative form-finding in 3D modeling applications. For today’s many design professions, 3D forms are achieved partly in engagement with digital environments. Use of software has far exceeded final idea execution, extending to the early phases of design work in which the outcome is not predetermined. This insight led designers of interactive systems support sketching and ideating activities by reducing the risk of experimentation and cognitive effort demanded from user. Yet, there has been less emphasis on traditional design and craft practice that acknowledges engagement with materials and effort spent on work as an integral part of creative process.The notion of exploration in the scope of this thesis attempts to incorporate such aspects. Relevant literature about workshop practice in design and craft has been reviewed, as well as examples of CAD technologies that aid designers. In this light, HCI perspectives on the design of creativity support tools and games have been discussed. The thesis work aimed to concretize this background by building a design strategy and an interactive artifact. A 3D form-finding application concept using objects in modeling space to indirectly manipulate geometry, “kfields”, has been developed and evaluated with users at various stages. The thesis concludes by reflecting on the findings of different design stages and proposing further directions for design.
13
Побережник, В. И., and V. I. Poberezhnik. "Разработка и внедрение плагина по автоматизации процесса «Отделка помещений» в строительном проектировании для компании ООО «СП КУБ» : магистерская диссертация." Master's thesis, б. и, 2020. http://hdl.handle.net/10995/93443.
Full textAbstract:
В настоящее время активно развиваются средства автоматизированного проектирования (САПР), что не может не сказываться на эффективности и разнообразии реализации строительных процессов. Среди широкой гаммы представленных вариаций САПР особое место сейчас занимает продвижение интеллектуального, а точнее информационного проектирования. BIM (с английского Building Information Modeling), а именно информационное моделирование зданий обладает рядом неоспоримых преимуществ по сравнению с устоявшейся системой CAD (с английского Computer-Аided Design). Также BIM-технологии обладают внушительной функциональностью, так как их применение целесообразно не только на стадии проектирования, но и на стадиях строительства и эксплуатации зданий и сооружений. Цель научно-исследовательской работы заключается в разработке программного модуля (плагина) для программного обеспечения Revit 2019, плагин автоматизирует один из процессов строительного проектирования, а именно процесс отделки помещений. Реализовать автоматизацию можно только на основе информации из BIM-модели.Currently, computer-aided design (CAD) tools are actively developing, which cannot but affect the efficiency and variety of implementation of construction processes. Among the wide range of CAD variations presented, a special place is now occupied by the promotion of intelligent, or rather informational design. BIM (from English Building Information Modeling), namely building information modeling, has a number of undeniable advantages over the established CAD system (from English Computer-Aided Design). Also, BIM technologies have impressive functionality, since their use is advisable not only at the design stage, but also at the stages of construction and operation of buildings and structures. The purpose of the research work is to develop a software module (plug-in) for the Revit 2019 software, the plug-in automates one of the building design processes, namely the interior decoration process. Automation can only be implemented based on information from the BIM model.
14
Chaahoub, F. "Etude des méthodes de conception et des outils de CAO pour la synthèse des circuits intégrés analogiques." Phd thesis, 1999. http://tel.archives-ouvertes.fr/tel-00163766.
Full textAbstract:
La réalisation des circuits analogiques à hautes performances souffre de difficultés principalement dues à la réduction de la tension d'alimentation et à la réduction de la consommation, qui sont conduites par la prolifération des systèmes portables aliméntés par des batteries, mais pâtit aussi du manque d'outils de CAO permettant d'automatiser la phase de layout qui est assez laborieuse et prend beaucoup de temps. Cette thèse se situe dans ce contexte. Elle traite de deux domaines assez distincts mais complémentaires, à savoir la conception de circuits intégrés analogiques à faible tension d'alimentation, et la génération automatique (ou assistée) du layout de ces circuits à l'aide d'algorithmes et de logiciels appropriés. L'aboutissement de cette thèse est, premièrement, la création d'une nouvelle méthode de conception de circuits intégré analogiques, plus précisement la génération d'une technique de conception de nouvelle structure, plus adaptée aux basses tensions d'alimentation et aux faiblesconsommations, deuxièmement, notre contribution à l'automatisation de la phase du layout des circuits intégrés analogiques, à savoir l'étude détaillée des contraintes analogiques à prendre en compte dans tout outil d'automatisation du layout (Générateur, Placeur, Routeur, Compacteur), ainsi que notre participation au développement de CHIRVAN (outil d'automatisation des masques des circuits intégrés analogiques et mixtes, développés au CNET Grenoble) en aidant à sa mise au point, en l'utilisant, en proposant des améliorations, et surtout en consacrant tous nos efforts à développer un algorithme de placement des cellules analogiques qui prend en compte toutes ces contraintes analogiques
15
Despesse, G. "Étude des phénomènes physiques utilisables pour alimenter en énergie électrique des micro-systèmes communicants." Phd thesis, 2005. http://tel.archives-ouvertes.fr/tel-00162518.
Full textAbstract:
Dici quelques années, des capteurs de toutes sortes vont envahir notre environnement. Nous en rencontrons déjà beaucoup autour de la voiture, de lordinateur ou de la téléphonie. Cette multiplication à grande échelle des capteurs nest toutefois possible que si, dune part, ils communiquent sans fil et, dautre part, ils sont entièrement autonomes du point de vue énergétique. Concernant les systèmes de communication, beaucoup de progrès et de normes sont apparus ces dernières années. La technologie semble être au point, même si des améliorations en terme de consommation sont encore possibles. Quant à lautonomie énergétique, elle pose actuellement un véritable problème à cause de la durée limitée des piles ou batteries, sans compter leurs problèmes de pollution. Lidée est donc de récupérer lénergie (mécanique, thermique, chimique ou rayonnante) qui entoure les capteurs pour les alimenter afin de les rendre autonomes durant leurs durées de vie. Suite à une importante étude bibliographique, nous nous sommes orientés vers la récupération de lénergie de vibrations mécaniques. Une campagne de mesure nous a alors permis dévaluer lénergie disponible dans un certain nombre denvironnements et de dimensionner un système qui permette de convertir sur une large bande de fréquences cette énergie mécanique en énergie électrique. Nous avons alors initialisé deux réalisations ; une première macroscopique en tungstène validant le concept et une deuxième en technologie silicium permettant de miniaturiser le récupérateur dénergie afin de le rendre compatible avec les dimensions des capteurs à alimenter. Les premiers essais avec la structure en tungstène ont montré la possibilité de récupérer environ 480 µW pour une excitation à 50 Hz et damplitude 80 µm.