Dynamical Stability
Mostrando 1-12 de 54 artigos, teses e dissertações.
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1. Layered double hydroxides as fillers in poly(l-lactide) nanocomposites, obtained by in situ bulk polymerization
Abstract In this study in situ bulk polymerization of L-lactide filled with layered double hydroxides (LDH) was investigated. Four different LDHs intercalated with two different organic anions (salicylate and sebacate) were synthesized and characterized. After characterization, these synthetic layered compounds were used as fillers in poly(L-lactide) (PLLA)
Polímeros. Publicado em: 31/05/2016
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2. Dynamical stability and parametrical vibrations of the laminated plates with complex shape
The problem of nonlinear vibrations and stability analysis for the symmetric laminated plates with complex shape, loaded by static or periodic load in-plane is considered. In general case research of stability and parametric vibrations is connected with many mathematical difficulties. For this reason we propose approach based on application of R-functions th
Lat. Am. j. solids struct.. Publicado em: 2013-01
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3. Sistemas dinâmicos: bacias de atração e aplicações / Dynamical systems: basins of attraction and aplications
The present work proposes to present a description of the theory on the basins of attraction of hyperbolic equilibrium points of continuous dynamical systems, to develop a method for the numerical determination of these basins and to examine the results of applying the theory and method in models of population dynamics. The determination of the basins of att
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2012
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4. Stability boundary characterization of nonlinear autonomous dynamical systems in the presence of saddle-node equilibrium points
Uma caracterização dinâmica da fronteira da região de estabilidade para uma ampla classe de sistemas dinâmicos autônomos é desenvolvida neste artigo. Essa caracterização generaliza os resultados existentes na medida em que permite a existência de pontos de equilíbrio sela-nó na fronteira da região de estabilidade. Mostra-se que a fronteira da re
TEMA (São Carlos). Publicado em: 2012
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5. The algorithmic weak stability boundary in earth-to-moon mission design: dynamical aspects and applicability.
This thesis consists of an extensive study of the Weak Stability Boundary (WSB) concept in low-energy Earth-to-Moon mission design within the mathematical structure provided by the Planar Circular Restricted Three-Body Problem (PCR3BP). By employing the patched three-body approach to approximate the Sun-Earth-Moon-spacecraft system, we examine and characteri
Publicado em: 2011
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6. Local stabilization of discrete-time linear systems with saturating controls : an LMI-Based approach
This note deals with the problem of local stabilization of linear discrete-time systems subject to control saturation.Alinear matrix inequalitie- based framework is proposed in order to compute a saturating state feedback that stabilizes the system with respect to a given set of admissible initial states and, in addition, guarantees some dynamical performanc
Publicado em: 2011
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7. An adaptive fuzzy dead-zone compensation scheme and its application to electro-hydraulic systems
The dead-zone is one of the most common hard nonlinearities in industrial actuators and its presence may drastically compromise control systems stability and performance. Due to the possibility to express specialist knowledge in an algorithmic manner, fuzzy logic has been largely employed in the last decades to both control and identification of uncertain dy
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2010-03
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8. Dinamica populacional do sistema imune aplicada ao sararmpo / Population dynamics of the immune system applied to measles
This work is a study of the interaction between the measles virus and the human immune system from the point of view of the population dynamics. Dynamical systems of first order non linear ordinary differential equations are used to model this population dynamics. Because of the fact that it is possible to observe two different and quite distinct moments in
Publicado em: 2010
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9. Caracterização dinâmica dos sistemas múltiplos de planetas extrassolares / Dynamic characterization of multiple extrasolar planetary systems
O presente trabalho tem por objetivo a caracterização dinâmica dos sistemas múltiplos de planetas extrassolares. O critério de classificação escolhido é baseado na proposta publicada inicialmente em Ferraz-Mello et al. (2005) e posteriormente modicada em Michtchenko et al. (2007). Para a obtenção dos parâmetros planetários orbitais foi feita uma
Publicado em: 2010
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10. Caracterização, estimativas e bifurcações da região de estabilidade de sistemas dinâmicos não lineares / Characterization, estimates and bifurcations of stability region of nonlinear dynamical systems
Estimar a região de estabilidade de um ponto de equilíbrio assintoticamente estável é importante em aplicações tais como sistemas de potência, economia e ecologia. A compreensão da estrutura qualitativa da fronteira da região de estabilidade é fundamental para estimar com eficiência a região de estabilidade. Caracterizações topológicas e dinâ
Publicado em: 2010
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11. Nanorolos de nitreto de boro : um estudo por dinamica molecular classica / Boron nitride nanoscrolls : a classical molecular dynamics study
In this work we report a study about the structural and dynamical properties of boron nitride nanoscrolls (BNNSs). BNNSs are nanostructures formed by rolling up boron nitride (BN) sheets into a spiral(papyrus)-like format. Although carbon nanoscrolls (CNSs) have been observed experimentally synthesized using different techniques, up to this moment no experim
Publicado em: 2010
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12. Estabilidade do filtro de kalman para sistemas lineares com saltos markovianos / Stability of Kalman filter for linear systems with systems with Markovian jumping
O filtro de Kalman é amplamente conhecido e utilizado em aplicações, em virtude de apresentar diversas propriedades interessantes. Este trabalho aborda uma das características mais importantes, a estabilidade do filtro de Kalman aplicado a sistemas lineares discretos com saltos Markovianos. Sistemas desta classe são muito empregados em problemas prátic
Publicado em: 2010