Generator Dynamics
Mostrando 13-23 de 23 artigos, teses e dissertações.
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13. A industria de alimentos e bebidas no Brasil : uma analise da dinamica tecnologica e das estrategias de inovação de suas empresas entre 1998 e 2005
The present work has the objective to analyze the behavior and the strategies of the firms of the food and beverage industry in Brazil, between 1998 and 2005, focusing on the technological and innovative aspects. The economical, financial and technological strategies of the industrial firms have being altered because of the internationalization, in its sever
Publicado em: 2008
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14. Contribuição ao estudo de aerogeradores de velocidade e passo variáveis com gerador duplamente alimentado e sistema de controle difuso / Contribution to the study of fuzzy control applied to variable-speed variable-pitch wind generators with double-fed induction generator
The efficient capture of aeolic-energy occurs by means of three blades turbines with adjustable pitch-angle and angular-speed. The pitch-angle adjustment is utilized to limit the aeolic-energy capture when occur very strong winds and, the angular speed adjustment is utilized to maximize the capture of kinetic energy of weak winds. In this mode of operation t
Publicado em: 2007
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15. A model of nervous system for the problem of the control of animation for direct dynamics. / Um modelo de sistema nervoso para o problema do controle de animaÃÃo por dinÃmica direta.
Direct dynamics animation consists of synthesizing the movements of a model from the specification of its physical properties (mass and moment of inertia), the conditions of bond between its contracting parties, the conditions of contact with other bodies and the forces that acts on it. This approaching has the advantage to generate animations with physical
Publicado em: 2007
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16. Modelagem e análise de desempenho dinâmico de complexos elétricos contendo centrais eólicas dotadas de geradores síncronos / Modeling and dynamic performance analysis of electric power systems containing wind installations equipped with synchronous generators
New generation resources, with low implantation and operation costs and that provoke the minimum possible impact to the environment, are undoubtedly focuses of attention to all the segments of the society. From this common sense, the alternative or renewable sources of energy, and particularly the wind, have certainly had a significant penetration in the com
Publicado em: 2007
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17. Modelagem e anÃlise de desempenho dinÃmico de complexos elÃtricos contendo centrais eÃlicas dotadas de geradores sÃncronos / Modeling and dynamic performance analysis of electric power systems containing wind installations equipped with synchronous generators
New generation resources, with low implantation and operation costs and that provoke the minimum possible impact to the environment, are undoubtedly focuses of attention to all the segments of the society. From this common sense, the alternative or renewable sources of energy, and particularly the wind, have certainly had a significant penetration in the com
Publicado em: 2007
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18. Experimental development and mathematical simulation of the photochemically initiated methyl methacrylate pre-polymerization process. / Desenvolvimento experimental e simulação matemática do processo de pré-polimerização fotoiniciada do metacrilato de metila (MMA).
The aim of this work is the experimental optimization, the mathematical modeling and the simulation of the photochemically initiated pre-polymerization process of methyl methacrylate (MMA). According to the industrial interests a pre-polymer of narrow molecular weight distribution (MWD) and defined weight concentration was pointed as an optimum since it impr
Publicado em: 2006
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19. Hydraulic turbines angular critical speeds evaluation with emphasis on the generator dynamic structural behaviour. / Cálculo das velocidades angulares críticas da linha de eixo de turbinas hidráulicas com ênfase no comportamento estrutural dinâmico do gerador.
O projeto de turbinas hidráulicas tem estado em constante evolução, levando a máquinas mais rápidas e mais leves, nas quais os carregamentos são mais severos e as estruturas mais flexíveis. Com isto, os cálculos dos componentes da turbina devem ser realizados com maior precisão do que no passado, entre eles a determinação das velocidades angulares
Publicado em: 2005
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20. Algebras de Clifford, transformações de Lorentz e o movimento de particulas carregadas
The main result presented in this thesis is a finite form (the MASTER equation) for the series of exponentials of infinitesimal generators of the Lorentz group. Explicitly, the exponential of a generator appears written by means of the first powers of the generators, in the SL(2,C) and SO(1,3) representations of the Lorentz group, multiplied by elementary fu
Publicado em: 1992
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21. Microscopic theory of irreversible processes
The microscopic theory of irreversible processes that we developed is summarized and illustrated, using as a simple example the Friedrichs model. Our approach combines the Poincaré's point of view (dynamical interpretation of irreversibility) with the Gibbs-Einstein ensemble point of view. It essentially consists in a nonunitary transformation theory based
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22. Duration of phasic electrical activity of the hypothalamic gonadotropin-releasing hormone pulse generator and dynamics of luteinizing hormone pulses in the rhesus monkey.
The secretion of luteinizing hormone (LH) by the pituitary gland is a pulsatile phenomenon. In the rhesus monkey, each pulse of LH in the peripheral circulation is associated with a characteristic increase in multiunit electrical activity (MUA) recorded from the medial basal hypothalamus. These "volleys" of electrical activity initiate the release of gonadot
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23. Multicomponent Control Strategy Underlying Production of Maximal Hand Velocity During Horizontal Arm Swing
Movement control responsible for generation of maximal hand velocity was studied on the example of horizontal arm swing that is a component of various sports activities. The movement was performed with the nondominant arm in similarity with the baseball bat swing. The task was to generate maximum hand velocity at a target. The movement included trunk long-ax
American Physiological Society.