Electrical Adaptive Filters
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Desenvolvimento de um sistema de manutenção inteligente embarcado
The technological evolution of sensors, electronics, and embedded systems has improved the performance, reliability and robustness of systems as well the maintenance activities, especially the proactive maintenance. These technological advances have provided a new view about the existing maintenance practices. The expansion of signal processing and artificia
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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2. Ultra-high band systems with pre-processing. / Sistemas de banda ultralarga com pré-processamento.
A resposta impulsiva do canal de um sistema de banda ultralarga típico é caracterizada pelo elevado número de percursos discerníveis. Dessa forma, para uma recepção eficiente, a energia espalhada nessas componentes multipercurso deve ser de alguma forma combinada. Considerando o enlace direto (downlink) de uma rede pessoal de curto alcance, assume-se q
Publicado em: 2010
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3. Sobre a velocidade de convergência da filtragem adaptativa IIR. / On the convergence speed of IIR adaptive filtering.
Adaptive filters with infinite impulse response (IIR) can replace with advantages the ones with finite impulse response (FIR). One of these advantages is the reduced number of parameters which leads to a smaller computational complexity giving similar responses. However, the use of adaptive IIR filters has some pratical issue, being the most prominent its sl
Publicado em: 2008
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4. Frequency estimation in power system through adaptive filtering / Estimação da freqüência em sistemas elétricos de potência através de filtragem adaptativa
This work presents a method for frequency estimation in power systems using adaptive filters based in the algorithm of least mean square (LMS). The analysis of the power system is made through the conversion of the three-phase voltages in a complex signal with the application of alfabetatransform, whose complex form was directed to the algorithm of adaptive
Publicado em: 2007
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5. Development and application of shunt active filters for three-phase four-wire systems / Estudo e aplicação de filtros ativos paralelos para sistemas trifasicos com quatro fios
Electricity power quality has gained increased importance in the past few years. The growing number of power electronicsbased loads has created a preoccupation about harrnonic distortion in electric systems. Electricity power quality is an important issue both for energy utilities and consumers. Harrnonic poIlution may cause severe problems to electricity ut
Publicado em: 2005