Linear Quadratic Control
Mostrando 13-24 de 84 artigos, teses e dissertações.
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13. Active vibration control of an arbitrary thick piezolaminated beam with imperfectly integrated sensor and actuator layers
A spatial state-space formulation based on the linear twodimensional piezoelasticity theory and involving local/global transfer matrices is applied to investigate the active vibration suppression of a simply supported, arbitrarily thick, orthotropic elastic beam, imperfectly integrated with spatially distributed piezoelectric actuator and sensor layers on it
Lat. Am. j. solids struct.. Publicado em: 2014
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14. Intake, performance and nutrient digestibility of sheep fed sugarcane treated and ensiled with calcium oxide or urea
The objective of this study was to evaluate intake, performance and nutrient digestibility of sheep supplemented with sugarcane ensiled with four levels of calcium oxide (0.0, 0.8, 1.6 and 2.4%) and urea (1.5%), on a natural matter basis. Twenty castrated Santa Ines lambs with 24.09 kg average weight were housed in individual 1.5 m² pens, distributed in a c
R. Bras. Zootec.. Publicado em: 2013-10
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15. Animal performance and carcass characteristics of Nellore young bulls fed coated or uncoated urea slaughtered at different weights
The objective of this study was to evaluate animal performance and carcass characteristics of 64 Nellore young bulls at 22 months of age finished in a feedlot and slaughtered at five body weights (350; 455; 485; 555 and 580 kg) fed diets containing coated or uncoated urea. The experimental design adopted was completely randomized, set in a 4 × 2 factorial a
R. Bras. Zootec.. Publicado em: 2013-04
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16. Biomass flow in massai grass fertilized with nitrogen under intermittent stocking grazing with sheep
This study evaluated the biomass flow of massai grass in regrowth subjected to different nitrogen levels (control - no fertilization; 400; 800; and 1200 N kg ha-1year-1) and under rotational stocking with sheep, in a completely randomized design with repeated measures over time. The leaf elongation rate increased with increasing nitrogen levels (N) and the f
R. Bras. Zootec.. Publicado em: 2013-01
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17. Estratégias com garantia de estabilidade para a integração de controle preditivo e otimização em tempo real. / Strategies with guarantee of stability for the integration of model predictive control and real time optimization
The aim of this Thesis is the development of predictive controllers (MPC) with guarantee of stability and that are part of a control structure where Real Time Optimization (RTO) is present and produces optimizing targets for the predictive controller. The approaches of two and three-layer are considered. Three different strategies are presented: the first st
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/03/2012
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18. CASHEW NUT MEAL USED AS FEED SUPLEMENT IN DIETS FOR LAMBS / UtilizaÃÃo do farelo de castanha de caju como suplemento alimentar em dietas de ovinos
The effects of supplementation with cashew nut meal (CNM) for sheep fed Tifton 85 (Cynodon sp.) grass hay as exclusive forage were evaluated on intake, digestibility, nitrogen balance and ingestive behavior of these animals. For this, we used twenty four male sheep, non-castrated, without defined breed and with an initial body weight (BW) of 16.2 + 3.1 kg an
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2012
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19. Grão de soja em suplementos múltiplos para novilhas de corte em pastejo / Soybean in multiple supplements for grazing beef heifers
This dissertation was prepared from two experiments with beef heifers submitted to different supplementation strategies on pasture. In the first experiment aimed to evaluate the effect of replacing soybean meal by soybean at different levels in multiple supplements on the nutritional characteristics and productive performance of heifers grazing in Uruchloa d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2012
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20. Controladores Robustos LQG/LTR com AÃÃo Integral Aplicados ao Controle de Geradores EÃlicos Interligados ao Sistema de DistribuiÃÃo de Energia ElÃtrica Baseados em MÃquinas de InduÃÃo Duplamente Alimentada / Robust Controller LQG/LTR with Integral Action Applied to Control of Wind Generators connected to Distribution Power System based on Doubly Fed Induction Machine
Na presente tese, propÃe-se um controlador robusto LQG/LTR (Linear Quadratic Gaussian with Loop Transfer Recovery) com aÃÃo integral (LQG/LTRI) em uma nova aplicaÃÃo para o ajuste dos controladores do conversor do lado da mÃquina e do conversor do lado rede elÃtrica em um sistema de conversÃo eÃlica utilizando um gerador de induÃÃo duplamente alim
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/01/2012
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21. Métodos numéricos para o controle linear quadrático com saltos e observação parcial de estado / Numerical methods for linear quadratic control with partial observation jump and state
Este trabalho consiste no estudo de métodos de otimização aplicados em um problema de controle para sistemas lineares com saltos markovianos (SLSM). SLSM formam uma importante classe de sistemas que têm sido muito úteis em aplicações envolvendo sistemas sujeitos a falhas e outras alterações abruptas de comportamento. Este estudo enfoca diferentes m�
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/01/2012
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22. Levels of supplementation for grazing pregnant beef cows during the dry season
The objective of this study was to evaluate the effect of different levels of multiple supplement supply on the nutritional characteristics and productive performance of pregnant cows grazing on Brachiaria decumbens Stapf. during the dry season. The experimental area was composed of four 3.0 ha paddocks with availability of potentially digestible dry matter
R. Bras. Zootec.. Publicado em: 2012-12
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23. Electrolyte balance in diets with reduced protein for semi-weighted laying hens in the second production cycle
The objective was to evaluate the effect of electrolyte balance in diets with reduced protein for semi-weighted Bovans Goldline laying hens in the second production cycle. The design was completely randomized with five treatments and seven replicates of six birds per experimental unit. Treatment 1 consisted of a control diet containing 165.0 g/kg crude prote
Revista Brasileira de Zootecnia. Publicado em: 2012-07
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24. A Review of Gradient Algorithms for Numerical Computation of Optimal Trajectories
Abstract: In this paper, two classic direct methods for numerical computation of optimal trajectories were revisited: the steepest descent method and the direct one based upon the second variation theory. The steepest descent method was developed for a Mayer problem of optimal control, with free final state and fixed terminal times. Terminal constraints on t
J. Aerosp. Technol. Manag.. Publicado em: 2012-06