Servomechanism
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Projeto e desenvolvimento de um sistema inteligente para alinhamento de uma antena parabólica receptora
O objetivo deste trabalho é projetar e desenvolver um sistema automatizado inteligente para o alinhamento de uma antena receptora com refletor parabólico aplicado a comunicação via satélite. Com base em procedimentos empíricos para o alinhamento manual de uma antena parabólica, foi concebida e desenvolvida uma solução tecnológica empregando hardwar
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/11/2011
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2. Projeto e implementação do controle de posição de uma antena de radar meteorológico através de servomecanismos. / Design and implementation of a weather-radar antenna position control using servomechanisms.
A classical radar antenna is basically composed of a primary source mounted at the focal point of a parabolic reflector. The illumination rule is established so that the desired beam-shape is attained, as precisely as possible. The physical motion of the set guarantees the coverage of the desired volume of exploitation. The actual text studies the design and
Publicado em: 2006
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3. Wavelet-packet identification of dynamic systems in frequency subbands.
This work presents a technique for linear system identification in frequency subbands by using wavelet packets. The wavelet-packet decomposition tree is used to establish frequency bands where subband models are created. An algorithm is proposed to adjust the tree structure, in order to achieve a compromise between accuracy and parsimony of the model. In a s
Publicado em: 2005
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4. Aeroelastic analysis including servomechanism transfer functions.
This study presents an aeroelastic analysis including the servomechanism transfer functions. The aeroelastic (flutter) behavior of the dynamic structure is analyzed when a feedback control is introduced. A structural dynamic model is elaborated together with an aerodynamic model in order to obtain the aeroelastic model. A feedback control model was then impl
Publicado em: 2001
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5. MÉTODOS INTERATIVOS PARA PROJETOS DE SERVOMECANISMO BASEADOS EM OTMIZAÇÃO H 2 / INTERATIVE METHODS FOR SERVOMECHANISM DESIGN BASED ON H2 OPTIMIZATION
Considera-se, neste trabalho, um problema de controle ótimo no qual o critério ( relativo à atenuação de sinais de perturbação) e a restrição (relativa à margem de estabilidade) são, respectivamente, normas e H2 e H(infinito) ponderadas de funções de transferência em malha fechada. Um procedimento iterativo para o obtenção de soluções aprox
Publicado em: 1993
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6. On the predictive control of foveal eye tracking and slow phases of optokinetic and vestibular nystagmus.
Smooth pursuit and saccadic components of foveal visual tracking as well as more involuntary ocular movements of optokinetic (o.k.n.) and vestibular nystagmus slow phase components were investigated in man, with particular attention given to their possible input-adaptive or predictive behaviour. Each component in question was isolated from the eye movement r
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7. Conceptus signals for establishment and maintenance of pregnancy
Establishment and maintenance of pregnancy results from signaling by the conceptus (embryo/fetus and associated extraembryonic membranes) and requires progesterone produced by the corpus luteum (CL). In most mammals, hormones produced by the trophoblast maintain progesterone production by acting directly or indirectly to maintain the CL. In domestic animals
BioMed Central.