Input Output Devices
Mostrando 1-12 de 20 artigos, teses e dissertações.
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1. Evaluation of the energy extraction of a small-scale wave energy converter
RESUMO Este trabalho tem foco em propostas que podem incentivar o desenvolvimento de dispositivos integrados de pequena escala para atender o desafio global de fornecer energia elétrica a partir de fontes alternativas sem maiores intervenções. O artigo apresenta a avaliação de um dispositivo de extração de energia das ondas em pequena escala que pode
RBRH. Publicado em: 04/04/2019
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2. Prediction of 3D ground reaction forces during gait based on accelerometer data
Abstract Introduction The aim of this study was to predict 3D ground reaction force signals based on accelerometer data during gait, using a feed-forward neural network (MLP). Methods Seventeen healthy subjects were instructed to walk at a self-selected speed with a 3D accelerometer attached to the distal and anterior part of the shank. A force plate was
Res. Biomed. Eng.. Publicado em: 21/09/2018
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3. MODELOS DE CARGAS BASEADOS EM MEDIÇÕES PARA SIMULAÇÕES DINÂMICAS EM SISTEMAS ELÉTRICOS DE POTÊNCIA / MEASUREMENT-BASED LOAD MODELING FOR DYNAMIC SIMULATIONS ON ELECTRIC POWER SYSTEMS
This work describes a measurement-based load modeling methodology, using voltage and current data registered during power system disturbances. These load models are used on computational simulations for predicting power system stability after disturbances of system operational points. Practical results are presented of the proposed methodology, defining load
Publicado em: 2010
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4. Programação Genética Aplicada à Programação de Controladores Lógico Programáveis / Genetic Programming Applied to Scheduling Programmable Logic Controllers
This research proposes the application of an artificial intelligence technique called genetic programming (GP) to make easier the programming of programmable logical devices (PLC) by the automatic generation of Ladder and Instruction List programs. The system data input can be done by not-specialized people using scenarios composed by time lines. These time
Publicado em: 2009
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5. Uma arquitetura para o desenvolvimento de aplicações de visão computacional e processamento digital de imagens em sistemas embutidos
This paper describes an architecture of hardware and software that helps the development of applications of Computer Vision and Digital Image Processing in Embedded Systems, specically Smart Cameras. Smart Cameras are cameras that, in addition to image capturing, is capable of extracting application-specic information. Embedded systems are systems composed o
Publicado em: 2009
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6. DevC: uma linguagem de suporte ao desenvolvimento concorrente de device drives e modelos de controladores de entrada e saÃda
Modern electronic products incorporate several features, combining mobility, computational power, a great capacity for communication and facility for interfacing. Nevertheless, integrating such functionalities increases the complexity of the design. The design of such products includes an embedded system that implements their functionalities in a combined so
Publicado em: 2009
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7. Realce de contraste em imagens digitais usando equalização de histograma
Nowadays devices are able to capture and process images from complex surveillance monitoring systems or from simple mobile phones. In certain applications, the time necessary to process the image is not as important as the quality of the processed images (e.g., medical imaging), but in other cases the quality can be sacrificed in favour of time.This thesis f
Publicado em: 2008
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8. Generalized scalar modulation strategy for matrix converters / EstratÃgia de modulaÃÃo escalar generalizada para conversores matriciais
Power processors are devices capable to convert a set of voltages, with fixed amplitude and frequency, in other set, with controlled amplitude and frequency. The main function of these processors is to work as an adjustable power supply. The direct power converters are a class of power processors. They have significant advantages compared with the traditiona
Publicado em: 2008
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9. Verificação de equivalência de circuitos combinacionais dissimilares através do reaproveitamento de cláusulas de conflito
As time goes by, integrated circuits are becoming ever more present in our lives. From the mobile phones we use to the cars we drive, we have almost constant interaction with electronic devices. This proliferation leads to the necessity for more agile and compact circuits, which in turn, makes them more complex and expensive. To produce error-free circuits,
Publicado em: 2008
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10. ANÁLISE COMPARATIVA DE INVERSORES MULTINÍVEIS COM CÉLULAS H-BRIDGE CONECTADAS EM SÉRIE / COMPARISON ANALYSIS OF CASCADED MULTILEVEL INVERTERS
This Master Thesis presents a methodology to compare different topologies and configurations of multilevel systems applied to drive medium voltage induction motors. Initially, it presents the input and output parameters that must be supplied by the power drivesystems manufacturer. Then, the mathematical models of the performance indexes used are presented, b
Publicado em: 2006
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11. Metodologia para localização de ciclo cardíaco a partir do sinal eletrocardiográfico
This dissertation proposes a cardiac cycle detection algorithm based on digital signals generated by ECG (electrocardiogram) devices. Detection is made through a threshold, seeking R wave occurrences, as represented by its second derivate. A threshold is established dynamically based on the last 10 seconds of the signal and its value is calculated taking the
Publicado em: 2006
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12. Estudo da orientação molecular em filmes automontados de azopolímeros por meio da técnica de geração de segundo harmônico (SHG) / Molecular orientation in self-assembled azo-polymer thin films studied by second harmonic generation (SHG).
Ultrathin films of polymers containing azochromophores are important for many applications such as optical data storage, formation of surface relief gratings, liquid crystal alignment layers and non-linear optical devices. Among several techniques for fabricating organic thin films, the Layer-By-Layer electrostatic self-assembly (LBL) is very attractive due
Publicado em: 2006