05 Fakultät Informatik, Elektrotechnik und Informationstechnik

Permanent URI for this collectionhttps://elib.uni-stuttgart.de/handle/11682/6

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Publication Type: search.filters.UBSTyp.Abschlussarbeit (Bachelor)Start date: 2011End date: 2011Subject: search.filters.subject.004

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Now showing 1 - 5 of 5
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    Evaluation of backtracing based diagnosis algorithms
    (2011) Badreldein, Maha
    With the growing size and complexity of modern circuits, more algorithms are being developed nowadays for efficient fault diagnosis. Backtracing based diagnosis algorithms are effect-cause approaches that start from the failing outputs of the circuit and try to diagnose fault locations by backtracing lines toward the circuit inputs. In this thesis, general functionality was extracted between backtracing based diagnosis algorithms and implemented as an extension to an existing diagnosis framework. Furthermore, a simple graphical user interface was developed for the extended framework. The extended framework aims at facilitating the implementation and evaluation of different backtracing based diagnosis algorithms. In order to demonstrate its powerfulness, two modern backtracing based diagnosis algorithms were implemented on top of the extended framework. A number of diagnosis experiments on benchmark circuits was carried out in order to evaluate the two implemented algorithms. The experimental tools used and the results obtained are presented.
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    Verteilung von Public-Sensing-Aufgaben basierend auf Android
    (2011) Leucht, Patrick
    Within recent years, mobile phones have become carriers of numerous smart applications and the potential of these mobile devices is even greater than it might look at first glance. Behind the combined pieces of information that many mobile devices possess lies hidden meta information that accounts for more than the mere sum of its parts, e.g. beginning and end of a traffic jam. Using our framework, researchers and scientists can create versatile requests for information and send them to mobile clients within a couple of minutes. For instance, environmental data could be sensed periodically without any user intervention. Prototype models of several information requests have been created to demonstrate the various aspects of possible public sensing scenarios, bearing in mind the users' concerns regarding data security and privacy. Our framework does not only manage creating and sending of specifically designed tasks, it also dispatches their executions on the client side, sends back the response, and interprets it. Therefore developers can fully concentrate on the content of sensing information.
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    Analysis of kinematics and dynamics of modular robot assemblies
    (2011) Ganzhorn, Jutta
    The development of self-reconfigurable modular robots has experienced significant progress. Continuous improvement during the past twenty years produced flexible and easy maintainable robot mechanisms. Self reconfiguring modular robots consist of various similar robotic modules and are designed to establish manifold connections between each of these link modules. Moreover these modules are able to perform movements to change the shape or the position of the robotic chain. In this thesis the main focus lies on the analysis of kinematics and dynamics of small modular robot organisms and their movement pattern. Although diverse linkage mechanisms do exist, practically no motion of one module can be accomplished without interacting with a second one. Therefore furthermore fundamental is the study and examination of dyad kinematics which represent the pattern of movement between solely two modules. However generation and simulation of models of modular robot kinematics and dynamics are complex and manual derivation needs tremendous efforts as every configuration and alternation of shape induce new changes of parameters´ values. Besides machinedriven computation requires a great deal of energy and increased storage capacity if every module constellation and applicable movements are predefined in a database. To avoid this squandering of resources a framework is implemented in Matlab based on Chen´s theory to design an accurate dynamic model. In the end, this thesis shall provide a farther step towards a robust and flexible modular robot organism which is able to perform reliable interaction with the environment to constitute to an optimized and effective realization of tasks assigned to it in industry or in the future private households.
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    Depth control of an underwater robot
    (2011) Weyer, Matthias van de
    For autonomous underwater vehicles, it is absolutely essential to be able to reach and keep a given depth autonomously. This procedure is usually not trivial, because a depth change is a nonlinear event. In addition disturbances, like water currents have to be compensated. This thesis deals with the development of a depth controller for a very small underwater platform and should perform this tasks. Therefore, the model of the platform is deduced from the equations of motions and simulated in Matlab Simulink. With this model, it is possible to simulate arbitrary control structures and control parameters in short time. Because the platform is very small, simple control structures like PID or state feedback will be used. To not neglect the nonlinearity, the system will be exact linearized. The designed controller will then be implemented on the micro controller board inside the platform.
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    Anforderungen und Nutzenpotentiale einer mobilen eHealth Plattform für chronische Krankheiten
    (2011) Subkov, Sergej
    Aus der demografischen Entwicklung und der damit verbundenen Zunahme chronisch Kranker resultieren immer höhere Behandlungskosten. Der technologisch-medizinische Fortschritt ermöglicht heute eine Betreuung von chronisch Kranken in ihrer häuslichen Umgebung. So lassen sich Krankenhausfälle reduzieren und damit Behandlungskosten einsparen. Allerdings sind die angebotenen, telemedizinischen Dienstleistungen aufgrund von hohen Anschaffungspreisen für speziell entwickelte Messgeräte zur Vitaldatenerfassung und einer mangelnden Beteiligung der Krankenkassen nur wenigen vorbehalten. In der Arbeit wird die Einsetzbarkeit von Smartphones im telemedizinischen Betreuungsprozess überprüft. Dazu wurden entsprechende Anforderungen an die Betreuung von Patienten mit Herzinsuffizienz erhoben und prototypisch umgesetzt. Es konnte gezeigt werden, dass Smartphones eine kostengünstige und flächendeckende Alternative zu herkömmlichen telemedizinischen Behandlungsmethoden sein können.