H Infinity Control
Mostrando 13-24 de 29 artigos, teses e dissertações.
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13. Controle H-infinito de sistemas lineares com infinitos saltos Markovianos via realimentação de saída / Output feedback H-infinity control of infinite Markov jump linear systems
Este trabalho trata do problema de controle H-infinito de uma classe de sistemas lineares com saltos Markovianos (MJLS) a tempo contínuo, onde a cadeia de Markov toma valores em um conjunto infinito enumerável. Um bounded real lemma (que chamamos JBRL) é desenvolvido, estabelecendo que a factibilidade de um conjunto infinito de desigualdades matriciais li
Publicado em: 2007
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14. Estudo de robustez em sistemas lineares por meio de relaxações em termos de desigualdades matriciais lineares / Robustness of linear systems by means of linear matrix inequalities relaxations
This thesis proposes, as main contribution, a new methodology to solve parameterdependent linear matrix inequalities which frequently appear in robust analysis and control problems of linear system with polytopic uncertainties. The proposed method relies on the parametrization of the solutions in terms of homogeneous polynomials of arbitrary degree with matr
Publicado em: 2006
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15. Controladores adaptativos não-lineares com critério H INFINITOaplicados a robôs espaciais / Adaptive nonlinear H INFINITEcontrollers applied to free-floating space manipulators
Neste trabalho, o equacionamento dinâmico de um manipulador espacial de base livre flutuante é descrito a partir do conceito do manipulador dinamicamente equivalente para que as técnicas de controle desenvolvidas sejam experimentalmente validadas em um manipulador convencional de base fixa. Dois tipos de controle de movimento são considerados. O primeiro
Publicado em: 2006
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16. Mixed H2 / H Infinity control through linear inequalities for flexible structures vibration reduction / Controle H2 / H Infinito via desigualdades matriciais lineares para atenuação de vibrações em estruturas flexiveis
This work has the goal to verify the action of a mixed H2/ Hoo control formulation through output feedback for a structure modelIed in finite elements. Therefore, the pure H2 and Hoo control formulations through output feedback are also verified to validate the described equations in this work for the mixed control and show a reference to their expected resu
Publicado em: 2005
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17. Controle H2/H Infinito de estruturas flexiveis atraves de desigualdades matriciais lineares com alocação de polos / H2/H "Infinity control of flexible strructures through linear matrix inequalities with pole placement
o objetivo deste trabalho é aplicar o controle H2/H Infinito usando desigualdades matriciais lineares com restrições de alocação de pólos em estruturas flexíveis. O problema de controle H2/H Infinito é uma técnica usada para a obtenção de controladores com as propriedades do controle norma H2, que trás desempenho ótimo, e do controle norma H Inf
Publicado em: 2005
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18. The influence of charge on the effects of n-octyl derivatives on sodium current inactivation in rat sensory neurones.
1. The whole-cell patch-clamp technique was used to determine the actions of n-octyl sulphate (OS-) anions and n-octyl trimethylammonium (OTMA+) cations on sodium current steady-state inactivation and peak amplitude in cells isolated from dorsal root ganglia of neonatal rats and maintained in short-term tissue culture. This paper concentrates on the effects
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19. Calcium channel inactivation in frog (Rana pipiens and Rana moctezuma) skeletal muscle fibres.
The decay of the Ca2+ current (ICa) during a maintained depolarization was studied in intact twitch skeletal muscle fibres of Rana pipiens and Rana moctezuma with the three-micro-electrode voltage-clamp technique. ICa was recorded at 23 degrees C, after blocking K+ currents, in TEA methanesulphonate saline with 10 mM-Ca2+ made hypertonic by adding 350 mM-suc
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20. The effect of temperature on the nerve-blocking action of benzyl alcohol on the squid giant axon.
The action of benzyl alcohol was studied on the voltage-clamped giant axons of Loligo forbesi. The depressant effect of 7.5 mM-benzyl alcohol on the action potential amplitude and peak rate of rise was more marked at a low (8 degrees C) than at a high temperature (16.5 degrees C). A small depolarization (approximately 5 mV) was also produced. These effects w
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21. Effects of an acidic beverage (Coca-Cola) on absorption of ketoconazole.
Absorption of ketoconazole is impaired in patients with achlorhydria. The purpose of this study was to determine the effectiveness of a palatable acidic beverage (Coca-Cola Classic, pH 2.5) in improving the absorption of ketoconazole in the presence of drug-induced achlorhydria. A prospective, randomized, three-way crossover design with a 1-week wash-out per
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22. Effect of Terbinafine on Theophylline Pharmacokinetics in Healthy Volunteers
Twelve healthy volunteers were enrolled in an open-label, randomized, crossover study. Subjects received single doses of theophylline (5 mg/kg) with and without multiple-dose terbinafine, and 11 blood samples were collected over 24 h. The study phases were separated by a 4-week washout period. Theophylline serum data were modeled via noncompartmental analysi
American Society for Microbiology.
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23. Calcium current inactivation in denervated rat skeletal muscle fibres.
1. The inactivation of the calcium current (ICa) was studied in single extensor digitorum longus muscle fibres of the rat. Denervation was performed by surgically removing 6-8 mm of the sciatic nerve at the sciatic notch. Electrical recordings were carried out using the double Vaseline-gap technique. Normal fibres were used as controls. 2. The time course of
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24. A fast transient outward current in the rat sympathetic neurone studied under voltage-clamp conditions.
Post-ganglionic neurones of the isolated rat superior cervical ganglion were voltage clamped at 37 degrees C using separate intracellular voltage and current micro-electrodes. Control experiments in current clamp suggested that the neurone is electrotonically compact, the soma and the proximal dendritic membranes being under good spatial voltage uniformity.