Adaptive Controlling Systems
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Uma proposta de controle neural adaptativo para a navegação de veículos autônomos / Autonomous vehicle navigation control: an adaptative neural networks proposal
Os equipamentos robóticos foram inicialmente criados para atuarem em ambientes industriais fechados. Com o passar do tempo, melhorias foram conquistadas. Atualmente, não se limitam mais à realização de tarefas simples e repetitivas em locais especialmente preparados. Novos equipamentos, capazes de atuarem em ambientes abertos e de realizarem as mais div
Publicado em: 2010
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2. Nonlinear H INFINITO control of underactuated robot manipulators / Controle H INFINITO não linear de robôs manipuladores subatuados
This work presents the development, implementation and analysis of nonlinear H control techniques applied to underactuated manipulators, under parametric uncertainties and external disturbances. At the first part, two approaches are considered for underactuated individual manipulators. The first approach consists in representing manipulators as nonlinear
Publicado em: 2004
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3. Controle de sistemas não lineares atraves de redes neurais
This thesis presents an approach for controlling a nonlinear system using an adaptive scheme implemented through neural networks. For a class of systems. necessary conditions for teaching the system input-output mapping to a multi-layer neural network trained by the generalized deIta rule are presented. A feedback linearization procedure, using feedforward n
Publicado em: 1991
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4. Inducible operation of the erythropoietin 3' enhancer in multiple cell lines: evidence for a widespread oxygen-sensing mechanism.
Adaptive responses to hypoxia occur in many biological systems. A well-characterized example is the hypoxic induction of the synthesis of erythropoietin, a hormone which regulates erythropoiesis and hence blood oxygen content. The restricted expression of the erythropoietin gene in subsets of cells within kidney and liver has suggested that this specific oxy
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5. OXIDATIVE METABOLISM IN PEDIOCOCCUS PENTOSACEUS II. , : Factors Controlling the Formation of Oxidative Activities12
Dobrogosz, Walter J. (The Pennsylvania State University, University Park) and Robert W. Stone. Oxidative metabolism in Pediococcus pentosaceus. II. Factors controlling the formation of oxidative activities. J. Bacteriol. 84:724–729. 1962.—Studies were conducted on some factors which regulate the formation of oxidative activities in Pediococcus pentosaceu
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6. The Theory of Speciation VIA the Founder Principle
The founder principle has been used to explain many instances of rapid speciation. Advances from theoretical population genetics are incorporated into Mayr's original founder-effect genetic-revolution model to yield a newer model called the genetic transilience. The basic theoretical edifice lies upon the fact that founder event can sometimes lead to an accu
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7. G protein and diacylglycerol regulate metamorphosis of planktonic molluscan larvae
The regulatory guanine nucleotide binding protein (G protein) activators cholera toxin and the GTP analog 5-guanylyl imidophosphate, the second messenger diacylglycerol, and certain diamino acids all facilitate (amplify) the settlement and metamorphic responses of planktonic larvae of Haliotis rufescens (marine mollusc) to morphogenetic chemical stimuli. In
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8. Cellular epigenetics: effects of passage history on competence of cells for "spontaneous" transformation.
"Spontaneous" neoplastic transformation of cells in culture has been shown to be an adaptive response to moderate physiological constraints such as contact inhibition and lowered concentrations of serum. These are the same constraints that promote normal differentiation of a variety of cell types. Because both normal and neoplastic development represent endu