Embedded Real Time System
Mostrando 1-12 de 27 artigos, teses e dissertações.
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1. A novel method for EMG decomposition based on matched filters
Introduction Decomposition of electromyography (EMG) signals into the constituent motor unit action potentials (MUAPs) can allow for deeper insights into the underlying processes associated with the neuromuscular system. The vast majority of the methods for EMG decomposition found in the literature depend on complex algorithms and specific instrumentation.
Res. Biomed. Eng.. Publicado em: 2015-03
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2. In-flight collision avoidance controller based only on OS4 embedded sensors
The major goal of this research was the development and implementation of a control system able to avoid collisions during the flight for a mini-quadrotor helicopter, based only on its embedded sensors without changing the environment. However, it is important to highlight that the design aspects must be seriously considered in order to overcome hardware lim
J. Braz. Soc. Mech. Sci. & Eng.. Publicado em: 2012-09
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3. Sistema de percepção visual embarcado aplicado à navegação segura de veículos = Embedded visual perception system applied to safe navigation of vehicles / Embedded visual perception system applied to safe navigation of vehicles
Esta tese aborda o problema de evitamento de obstáculos para plataformas terrestres semie autônomas em ambientes dinâmicos e desconhecidos. Baseado num sistema monocular, propõe-se um conjunto de ferramentas que monitoram continuamente a estrada a frente do veículo, provendo-o de informações adequadas em tempo real. A partir de um algoritmo robusto de
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/08/2011
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4. Aplicabilidade de sistemas operacionais de tempo real (RTOS) para sistemas embarcados de baixo custo e pequeno porte / Real-time operating system aplicability for small and low cost embedded systems
Sistemas embarcados ganham cada vez mais espaço devido ao aumento da demanda por novas funções em equipamentos, às normas regulatórias e às novas necessidades dos consumidores e do mercado. Esse aumento nos requisitos aumenta o tamanho e a complexidade dos softwares embarcados cuja importância cresce significativamente. Sistemas operacionais de tempo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/07/2011
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5. Constraint-driven test scheduling for NoC-based systems
On-chip integrated network, the so-called networkon- chip (NoC), is becoming a promising communication paradigm for the next-generation embedded core-based system chips. The reuse of the on-chip network as test access mechanism has been recently proposed to handle the growing complexity of testing NoC-based systems. However, the NoC reuse is limited by the o
Publicado em: 2011
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6. Dynamic load-balancing : a new strategy for weather forecast models
Weather forecasting models are computationally intensive applications and traditionally they are executed in parallel machines. However, some issues prevent these models from fully exploiting the available computing power. One of such issues is load imbalance, i.e., the uneven distribution of load across the processors of the parallel machine. Since weather
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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7. Uma abordagem em arquitetura conduzida por modelos aplicada a software embarcado de tempo real espacial / An approach to model-driven architecture applied to space embedded real time software
Real time embedded software are applied on space missions, however its development lacks more robust techniques to accomplish requirements more wide and complex, to improve its easiness for execution of tests and integration, beyond increasing time-to-market. Aligned with Model-Driven Architecture the current work proposes an approach to describe real time e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/11/2010
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8. Controle de atitude de satélites artificiais utilizando um processador digital de sinais / Attitude control of satellites using a digital signal processor
This work deals with the development and implementation of an attitude control system for an artificial satellite using a Digital Signal Processor (DSP). The dissertation presents a complete study of the attitude movement modeling and control for the continuous time systems case, considering the Linear Quadratic Regulator (LQR) and Linear Quadratic Gaussian
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/09/2010
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9. Proposta de melhoria de tempo de resposta para o protocolo FTT-CAN : estudo de caso em aplicação automotiva
Embedded computing systems have become widely used in many areas. The greater part of those systems has time constraints and therefore they can be characterized as real time embedded systems. Nowadays, distributed computing has reached the embedded application, where some fieldbuses are already being used as communication platforms. Some important researches
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2010
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10. Hardware/Software codesign of particle filter for real time localization of mobile robots / Co-projeto de hardware/software do filtro de partículas para localização em tempo real de robôs móveis
Sophisticated techniques for estimation of models based on simulation, particle filters or Sequential Monte Carlo Methods, were recently used to solve many difficult problems in the field of mobile robotics. However, the success of particle filters was limited to the computation of parameters in low dimensionality spaces. The current research efforts in mobi
Publicado em: 2010
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11. Modelagem e anÃlise de especificaÃÃes de sistemas de tempo-real crÃticos com restriÃÃes de energia
Requirements analysis is a critical task in any Embedded Real-Time System (ERTS) project. Normally, these systems have stringent timing constraints that must be satisÂed for the correct functioning, since violation might be catastrophic, such as loss of human lives or large amount of Ânancial resources. In addition, there are systems where energy is anothe
Publicado em: 2009
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12. 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