Control Of Dynamical Systems
Mostrando 1-12 de 46 artigos, teses e dissertações.
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1. Desenvolvimento de ferramenta de comparação de técnicas de processamento de sinais para determinar fadiga muscular por meio do sinal emg / Toolkit development for signals processing technics comparison to detect muscular fadigue by EMG signal
This study aimed to development of a computational tool for electromyographic signal (EMG) analysis by signal processing techniques to determine muscular fatigue. With Ethics Committee of Federal University of Goiás approve were recorded from the dominant biceps brachii of 10 volunteers, that did not ever had muscular disease. The protocol consisted on get
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/07/2012
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2. 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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3. Bézier control points method to solve constrained quadratic optimal control of time varying linear systems
A computational method based on Bézier control points is presented to solve optimal control problems governed by time varying linear dynamical systems subject to terminal state equality constraints and state inequality constraints. The method approximates each of the system state variables and each of the control variables by a Bézier curve of unknown cont
Comput. Appl. Math.. Publicado em: 2012
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4. Predição e identificação de danos internos em batatas por meio do biospeckle laser / Prediction and identification of potatoes in internal damagethrough the laser biospeckle
Food damages due to mechanical impacts at post harvest different phases are one of the biggest issues faced by food industry. In potatoes, productivity decrease due to impacts and physical damages can get to 40% during processing, storage, transportation and commercialization phases. Intern injuries, or bruising, are one of the biggest factors losses at pota
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/06/2011
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5. Bifurcação de Hopf em um modelo para a dinâmica do vírus varicela-zoster / Hopf bifurcation in a model for the dynamics of varicella-zoster virus
Este trabalho propõe um sistema de equações diferenciais ordinárias composto por cinco equações não lineares acopladas, numa estrutura baseada no modelo SIR de Kermack e Mckendrick 1927, que visa descrever a dinâmica do vírus varicela-zoster na população de humanos. Da análise de seus pontos de equilíbrio verificamos o surgimento de uma bifurca�
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/02/2011
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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. Controle de caos e saltos entre atratores em um sistema com impactos / Control of caos and basin hopping in a system with impacts
For a mechanical system, described by the impact-pair model, we studied the control of chaos by a parametric perturbation and the basin-hopping phenomeno. For this nonintegrable system, we obtained numerically the evolution of its dynamical variables for a large set of initial conditions and control parameters. For this analysis, we used phase planes, Poinca
Publicado em: 2010
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9. Controle preditivo não-linear baseado em multimodelos aplicado ao motor de indução / Induction motor non-linear predictive control based on a multimodeling approach
Uma abordagem preditiva global-local para o controle de um motor de indução é apresentado nesta tese. O conceito de controle preditivo diz respeito a uma classe de controladores que tem se desenvolvido muito no âmbito do controle de sistemas de conversão de energia nos últimos anos, acompanhando o desenvolvimento da capacidade computacional dos sistema
Publicado em: 2010
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10. Desenvolvimento e avaliação de estratégias de assistência à pilotagem para aeronaves leves
The following work presents the process of choice and development of a series of strategies to facilitate piloting on light aircrafts. These strategies are based on trajectory control instead of attitude control like it is usually done in conventional aircrafts, aiming smaller learning times as well as reduction in pilot workload, such that flight safety is
Publicado em: 2009
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11. A multiparameter chaos control method applied to maps
Chaos is a kind of nonlinear system response that has a dense set of unstable periodic orbits (UPOs) embedded in a chaotic attractor. The idea of the chaos control is to explore the UPO stabilization obtaining dynamical systems that may quickly react to some new situation, changing conditions and their response. The OGY (Ott-Grebogi-Yorke) method achieves sy
Brazilian Journal of Physics. Publicado em: 2008-12
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12. Estudo de tecnicas de controle H-infinito para estruturas flexiveis com intercentezas / A study on H-inifinity control techniques for uncertain flexible structures
This dissertation deals with modern techniques from the Robust H? Control of Linear Dynamic Systems. By this it is meant that the results from linear control systems theory are used as mathemathical tools when considering several kinds of uncertainty on the models. These models are mostly of flexible structures and the design methods are implemented using so
Publicado em: 2008