Linear Quadratic Control
Mostrando 37-48 de 84 artigos, teses e dissertações.
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37. Nonlinear optimum model following control of flexible aircraft.
This Doctorate Thesis concerns optimum control of flexible aircraft. Models of a conceptual flexible aircraft are developed for control applications. A general model following problem via output feedback is developed and applied to the conceptual aircraft. The models are determined for 3 aircraft variants with increasing flexibility. The aerodynamics of flex
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/12/2010
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38. Controle de atitude de satélites artificiais utilizando um processador digital de sinais / Attitude control of satellites using a digital signal processor
This work deals with the development and implementation of an attitude control system for an artificial satellite using a Digital Signal Processor (DSP). The dissertation presents a complete study of the attitude movement modeling and control for the continuous time systems case, considering the Linear Quadratic Regulator (LQR) and Linear Quadratic Gaussian
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/09/2010
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39. Nonlinear optimum model following control of flexible aircraft.
This Doctorate Thesis concerns optimum control of flexible aircraft. Models of a conceptual flexible aircraft are developed for control applications. A general model following problem via output feedback is developed and applied to the conceptual aircraft. The models are determined for 3 aircraft variants with increasing flexibility. The aerodynamics of flex
Publicado em: 2010
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40. Observadores de Estados para Sistemas de Medição Indireta e Controle RLQD-GA / Observers of States for Systems Indirect Measurement and Control RLQD-GA
Motivado pela necessidade de algoritmos eficientes, apresenta-se o desenvolvimento de uma metodologia para projeto e análise de observadores de estado em malhas aberta e fechada que são dedicados a monitoração e controle de sistemas dinâmicos. O desenvolvimento dos observadores estão fundamentados em modelos OE, descrição no espaço de estados e filt
Publicado em: 2010
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41. ADHERENCE AND BACTERIAL ENZYME ACTIVITY IN THE RUMEN: EFFECT OF PH AND CONCENTRATION OF SOLUBLE CARBOHYDRATES / ADERÊNCIA E ATIVIDADE FIBROLÍTICA BACTERIANA RUMINAL: EFEITO DO PH E DA CONCENTRAÇÃO DE CARBOIDRATOS SOLÚVEIS
In vitro assays were conducted to develop a method to estimate activity of bacterial enzymes in the rumen and the effect of changes in pH (5.5, 6.0, 6.5 and 7.0) and concentration of soluble carbohydrates (0, 100, 200 and 300 mg / dl) on adhesion to forage particles and ruminal bacterial fibrolytic activity. To evaluate the enzymatic extraction methods, samp
Publicado em: 2010
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42. Controle em horizonte finito com restriçoes de sistemas lineares discretos com saltos markovianos / Constrained control problem within a finite horizon of markovian jump discrete linear systems
The purpose of this work is to propose and solve the constrained control problem within a finite horizon of Markovian Jump Discrete Linear Systems (MJDLS) driven by noise. The constraints of the state and control vectors are not rigid and limits are established respectively to their first and second moments. The controller is based on a linear state feedback
Publicado em: 2009
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43. DEVELOPMENT OF SYMBIOTIC CREAM CHEESE: CHARACTERIZATION AND LIPID PROFILE WITH EMPHASIS ON CONJUGATED LINOLEIC ACID / DESENVOLVIMENTO DE CREAM CHEESE SIMBIÓTICO: CARACTERIZAÇÃO E PERFIL LIPÍDICO COM ÊNFASE EM ÁCIDO LINOLÉICO CONJUGADO
Dairy products form the major part of functional foods available on market place. Fresh cheeses are propitious to addition of probiotics due to their suitable pH, acidity and moisture. The objective of this study was evaluate the potential of cream cheese as a vehicle of probiotics, the physical-chemical, microbiological and sensory characteristics and the l
Publicado em: 2009
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44. Effects of growing rates in prepubertal period on performance, age at puberty and milk yield of Santa Ines sheep / Efeitos de diferentes taxas de crescimento na recria sobre o desempenho, idade a puberdade e produção leiteira em fêmeas da raça Santa Inês
Trial I: Sixty Santa Ines ewe lambs were used to evaluate the effects of three growing rates until 7 months of age. Treatments were defined to achieve high (HGR), moderate (MGR) and low (LGR) growing rates. The dry matter intake and average daily gain (ADG) were evaluated, well as serum levels of progesterone in order to detect the age of puberty. Linear eff
Publicado em: 2009
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45. DESEMPENHO E CARACTERÍSTICAS DE CARCAÇA DE JUVENIS DE CARPA CAPIM (Ctenopharyngodon idella) EM RESPOSTA A NÍVEIS E FONTES DE PROTEÍNA DA DIETA / GROWTH AND CARCASS CHARACTERISTICS OF GRASS CARP (Ctenopharyngodon idella) JUVENILES IN RESPONSE OF DIETARY PROTEIN LEVELS AND SOURCES
This work was carried out to evaluate the performance and carcass characteristics of grass carp (Ctenopharyngodon idella) juveniles in response to dietary protein levels and sources. For this, two experiments were conducted: the first (80 days), evaluating four crude protein (CP) levels (22, 30, 36 and 44%) and the second (60 days), comparing protein sources
Publicado em: 2009
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46. State-Space modeling and active aeroelastic control of a typical airfoil section with three degrees of freedom.
This dissertation presents a detailed analysis of a typical section model with three degrees of freedom. This is a classic model used for the study of basic aerodynamic and aeroelastic phenomena. The equations of motion are derived and discussed. The equations for the aerodynamic loads induced by arbitrary motion of the typical section and by arbitrary shape
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/09/2008
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47. Design of an automatic landing system using linear quadratic tracker.
This work presents the application of the Linear Quadratic Tracker (LQT) for the automatic landing system of passenger transport airplanes. The design method to achieve an autoland flare law with improved performance and disturbance rejection is described. With this method the design is direct and more formal thus avoiding the somewhat time consuming and mor
Publicado em: 2008
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48. Investigation of multivariable control techniques for attitude control of a rigid satellite - flexible / Investigação de técnicas de controle multivariáveis no controle de atitude de um satélite rígido - flexível
The main objective of this work is the investigation of multivariable control techniques for attitude control of a Rigid Satellite - Flexible. For this investigation, a satellite model was developed consisting of a rigid body and two flexible panels. The investigated techniques are Linear Quadratic Regulator (LQR) method, Linear Quadratic Gaussian (LQG) meth
Publicado em: 2008