Submitted by SBI Biblioteca Digital (sbi.bibliotecadigital@puc-campinas.edu.br) on 2017-08-07T14:11:46Z No. of bitstreams: 1 RAFAEL GON?ALVES TOZZO.pdf: 13567008 bytes, checksum: 3305755519de6ae576b53dea1ba30527 (MD5) / Made available in DSpace on 2017-08-07T14:11:46Z (GMT). No. of bitstreams: 1 RAFAEL GON?ALVES TOZZO.pdf: 13567008 bytes, checksum: 3305755519de6ae576b53dea1ba30527 (MD5) Previous issue date: 2017-06-29 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The dissertation describes the development of an autonomous wireless network element, which enables researchers to gather information in outdoor environments. Investigating the autonomy of sensor nodes, and the dimensioning of a battery and a photovoltaic panel. For the validation of the solution, is used the sensor node developed in this work to collect data in external areas for periods of time. Applying strategies for dimensioning an energy system to aiming the needs of a sensor node in an external environment. An energy-saving strategy has been developed with sleep mode that allows higher work cycles to the NSS. The results are the finding that the NSS worked in the period, through the voltage level of the battery, which is related to the energy of the same. It can be affirmed that the NSS functioned and the objective of monitoring quantities in outdoor environments. / A disserta??o descreve o desenvolvimento de um elemento de rede sem fio aut?nomo, que possibilita a pesquisadores a coleta de informa??es em ambientes externos. Investigando a autonomia de n?s sensores, e o dimensionamento de uma bateria e de um painel fotovoltaico. Para a valida??o da solu??o, utiliza-se o n? sensor desenvolvido para a realiza??o de coletas de grandezas em ?reas externas por per?odos de tempo. Aplicando estrat?gias de dimensionamento de um sistema de energia visando as necessidades de um n? sensor em ambiente externo. Foi desenvolvida uma estrat?gia de economia de energia, com sleep mode que permite ciclos de funcionamento maiores ao NSS. Os resultados ? a constata??o de que o NSS funcionou no per?odo, atrav?s do n?vel de tens?o da bateria, que est? relacionado com a energia da mesma. Podendo afirmar-se que o NSS funcionou e atente ao objetivo de monitorar grandezas em ambientes externos.

The Intelligent Algorithm is designed for theusing a Battery source. The main function is to automate the Hybrid System through anintelligent Algorithm so that it takes the decision according to the environmental conditionsfor utilizing the Photovoltaic/Solar Energy and in the absence of this, Fuel Cell energy isused. To enhance the performance of the Fuel Cell and Photovoltaic Cell we used batterybank which acts like a buffer and supply the current continuous to the load. To develop the main System whlogic based controller was used. Fuzzy Logic based controller used to develop this system,because they are chosen to be feasible for both controlling the decision process and predictingthe availability of the available energy on the basis of current Photovoltaic and Battery conditions. The Intelligent Algorithm is designed to optimize the performance of the system and to selectthe best available energy source(s) in regard of the input parameters. The enhance function of these Intelligent Controller is to predict the use of available energy resources and turn on thatparticular source for efficient energy utilization. A fuzzy controller was chosen to take thedecisions for the efficient energy utilization from the given resources. The fuzzy logic basedcontroller is designed in the Matlab-Simulink environment. Initially, the fuzzy based ruleswere built. Then MATLAB based simulation system was designed and implemented. Thenthis whole proposed model is simulated and tested for the accuracy of design and performanceof the system.

This thesis deals with modeling dynamics of printing machine, made by SOMA Engineering, in toolbox SimScape of simulation program Simulink/Matlab. There are descibed properties, progress, important principles and laws of modeling in this toolbox. The first part is focused on creating models, which consist as mechanical as eletrical and control parts. In the second part is explained how to create user interface to control models and creating standalone application, executable without installation of Matlab or Simulink. In last part is explained principle of identification parameters of material from the measured data, using an optimalization algorithm Nelder-Mead. Created models and identification algorithm are controlled via user interface.

In a technologically advanced society, the average person manages dozens of accounts for e-mail, social networks, e-banking, and other electronic services. As the number of these accounts increases, the need for automatic user identification becomes more essential. Biometrics have long been used to identify people and are the most common (if not the only) method to achieve this task. Over the past few years, smartphones have become frequently used gadgets.  These devices have built-in microphones and are commonly used by a single user or a small set of users, such as a couple or a family. This thesis uses a smartphone’s microphone to capture user’s speech and identify him/her. Existing speaker recognition systems typically prompt the user to provide long voice samples in order to provide accurate results. This results in a poor user experience and discourages users who do not have the patience to go through such a process.  The main idea behind the speaker recognition approach presented in this thesis is to provide a seamless user experience where the recording of the user’s voice takes place in the background. An Android application is developed which silently collects voices samples and performs speaker recognition without requiring extensive user interaction.  Two variants of the proposed tool have been developed and are described in depth in this thesis. The open source framework Recognito is used to perform the speaker recognition task. The analysis of Recognito showed that it is not capable of achieving high accuracy especially when the voice samples contain background noise. Finally, the comparison between the two architectures showed that they do not differ significantly in terms of performance. / I ett teknologiskt avancerat samhälle så hanterar den genomsnittliga personen dussintals konton för e-post, sociala nätverk, internetbanker, och andra elektroniska tjänster. Allt eftersom antalet konton ökar, blir behovet av automatisk identifiering av användaren mer väsentlig. Biometri har länge använts för att identifiera personer och är den vanligaste (om inte den enda) metoden för att utföra denna uppgift. Smartphones har under de senaste åren blivit allt mer vanligt förekommande, de ger användaren tillgång till de flesta av sina konton och, i viss mån, även personifiering av enheterna baserat på deras profiler på sociala nätverk. Dessa enheter har inbyggda mikrofoner och används ofta av en enskild användare eller en liten grupp av användare, till exempel ett par eller en familj. Denna avhandling använder mikrofonen i en smartphone för att spela in användarens tal och identifiera honom/henne. Befintliga lösningar för talarigenkänning ber vanligtvis användaren om att ge långa röstprover för att kunna ge korrekta resultat.  Detta resulterar i en dålig användarupplevelse och avskräcker användare som inte har tålamod att gå igenom en sådan process. Huvudtanken bakom den strategi för talarigenkänningen som presenteras i denna avhandling är att ge en sömlös användarupplevelse där inspelningen av användarens röst sker i bakgrunden. En Android-applikation har utvecklats som, utan att märkas, samlar in röstprover och utför talarigenkänning på dessa utan att kräva omfattande interaktion av användaren. Två varianter av verktyget har utvecklats och dessa beskrivs ingående i denna avhandling. Öpen source-ramverket Recognito används för att utföra talarigenkänningen. Analysen av Recognito visade att det inte klarar av att uppnå tillräckligt hög noggrannhet, speciellt när röstproverna innehåller bakgrundsbrus. Dessutom visade jämförelsen mellan de två arkitekturerna att de inte skiljer sig nämnvärt i fråga om prestanda.

Smartwatch is a technological product that has rekindled a lot of interest worldwide and areseen to be connected to our day-to-day lives. The recent growth on the adoption of thesmartwatch has posed challenges to researchers and other interest groups. Humans now live inmodern scientific societies that are heavily reliant on numerous smart devices of which thesmartwatch is a part of it. Past research has been done on the smartwatch phenomenon and itsassociated question that surround it. In this paper, we seek answers to the vital questionsbordering the usage of smartwatch and how those factors that are responsible for the increasein adoption of the smartwatch . The grounded theory research designed was used as ourmethodological approach and data were collected from twenty participants, some living inSweden and some in Norway. Analysis of data is also based upon, and informed by, theguidelines of grounded theory data coding steps. Further open coding & axial coding techniqueswere applied in data analysis section. Analysis of the data collected from the interviewsrevealed some interesting areas of smartwatch applications today. It also presented an insighton how consumers of smartwatch think about the product. Results from this study will be usefulfor future researchers as well as smartwatch merchants and makers.

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Le travail présenté dans cette thèse est une contribution au dimensionnement et à la commande d’un générateur de type Cascade de Machines Asynchrones à Double Alimentation. Le modèle de la machine pour les simulations est basé sur une représentation modulaire qui découle du modèle de Park de deux machines asynchrones doublement alimentées distinctes, en respectant deux systèmes de référence. Le modèle dynamique est ensuite étendu pour décrire la machine dans un repère unifié. Cette représentation est cruciale pour le dimensionnement de la machine et la synthèse de la commande. Le domaine de fonctionnement de la cascade en régime permanent est exploré. Une méthode analytique générique est proposée pour établir les plages de puissances active-réactive. Les courbes limites sont définies par rapport aux grandeurs nominales de la machine. L’étude prend en compte l’effet de saturation du circuit magnétique. Il est prouvé que la capacité en puissance de la machine est déterminée par les valeurs maximales des courants statoriques et peut être soumise à plusieurs limitations. L’approche analytique est testée et validée par des mesures expérimentales. Deux cas sont considérés pour la commande de la cascade : un générateur raccordé au réseau et un générateur autonome. Pour la connexion au réseau l’application visée est les éoliennes de grande puissance. Une nouvelle méthode pour l’extraction de la puissance maximale d’une éolienne à vitesse variable est proposée. Le système est contrôlé dans le but de fournir une puissance maximale quasi-constante indépendamment des fluctuations du vent. En plus de l’optimisation de la puissance, le facteur de puissance est également ajusté selon les normes de raccordement standard imposées par les services système, et les limites de fonctionnement de l’unité intégrée. Une commande vectorielle sans capteur de tension, basée sur une orientation suivant un flux virtuel, est appliquée pour la régulation découplée des puissances active et réactive. Pour le fonctionnement en mode isolé, l’application visée est la génération électrique pour système avionique embarqué. Deux réseaux de distribution sont traités : réseau AC à fréquence fixe et réseau DC. Dans les deux cas, la commande est élaborée dans le but de maintenir une tension de sortie constante. Le fonctionnement de la cascade alimentant une charge triphasée déséquilibrée est également étudié. Des schémas de contrôle servant à la compensation du déséquilibre des tensions statoriques sont développés. Deux méthodes de compensation sont proposées : l’une basée sur le principe de deux repères tournants et l’autre sur un correcteur répétitif. Les approches présentées sont validées par simulation avec Matlab/Simulink et par expérimentation. / This thesis is a contribution to the power sizing and the control of a Cascaded Doubly Fed Induction Generator (CDFIG). The machine model for simulation is based on a modular representation, derived from the Park model of two distinct Doubly Fed Induction Machines expressed in their own reference frames. The dynamic model of the cascaded machine is then extended to be described in a unified reference frame. This representation is convenient for the sizing of the machine and for the design of the controller. The steady state power operating margins of the cascaded machine are investigated. A generic analytic method is suggested to derive the active-reactive power domain. The limit curves are defined in terms of the rated quantities of the machine. The study takes into account the magnetic circuit saturation effect. It is proven that the power capability of the machine is determined by the stator current maximum values and is subject to several limitations. The analytical approach is tested and validated by experimental measurements. The CDFIG is controlled in grid-connected and standalone operation modes. In grid-connected application, the attention is paid to high power wind generation systems. A new maximum power tracking of a variable speed wind turbine is suggested. The generating plant is carried to provide a quasi-constant maximum power regardless wind fluctuations. In addition to active power optimization the power factor is adjusted according to the grid code requirements and the operating domain of the integrated unit. A virtual flux oriented vector control is applied for the decoupled regulation of active and reactive powers, leading to grid voltage sensorless operation. In standalone operating mode, the study treats in particular the embedded aircraft power system generation. Two distribution networks are considered: constant frequency AC network and DC network. In both cases, the control aims to maintain a constant output voltage. The operation of the CDFIG supplying unbalanced three-phase load is further explored. Control schemes to cope with unbalanced stator voltage conditions are developed. Two compensation methods are elaborated: the first dealing with dual rotating frames and the second is based on repetitive controller. Simulations with Matlab/Simulink software and experiments validate the control approaches.

The Master’s thesis on the theme „Multi function house“ is drafted as a building documentation according to the relevant laws and standards. The project processes a documentation of a new multi fiction apartment house construction with overall 16 flats. Their sizes are from a flat 2+1 to a flat with 4 rooms and kitchenette. Every flat has a garage and a cellar in the first floor. In the house there are 2 offices with a capacity about 12 employees and also 3 commercial premises. Hairdressing parlor and an Apple store are going to by situated into two smaller premises. In the last premise with 263 m2 of floorspace there is going to be a cycling shop. The project is designed as a brick building without basement. The building has two parts with four floors and these parts are united by a single-storey part. The whole building is symetric. The roof is designed as a platform with tend of 3%. On top of the first floor there is going to be a vegetation roof and a roof teracce with a flagging. On the fourth floor there are going to be roof teracces with ceramic pavement. Over the fourth floor there is going to be a roof cllading laden by pebbles. The house is situated in the town Kroměříž, in the pacific neighbourhood near to the historical town center. The neighbourhood of the object is determined for a building-up of family houses. Nearby the house there is a primary school and an athletic ground. The brick object is designed by a construction system Livetherm on the wall footings. The ceiling constructions are from concrete. The Master’s thesis is made as a project realization of building construction part with studies and design fundamentals. The part of the thesis is also the thermal technical recognition, fire recognition of the object and concept of canalization.

Master thesis processes documentation for the realization of the new building of the multi-functional sporting centre. Object is designed as the two storey building with the external thermal insulation system ETICS. Object is designed according to the appropriate legislation. Object fulfills demands for the low-energy standard. Building is without cellar with the flat warm roof. Load bearing constructions of the floor ceilings are made out of prestressed concrete panels SPIROL. Load bearing construction of the hall roof is made of the glulam timber beams and purlins with the bracing.