Linear Quadratic Regulator
Mostrando 13-21 de 21 artigos, teses e dissertações.
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13. Structural vibration control using piezoceramics in extension and shear connected to hybrid active-passive circuits / Controle de vibrações estruturais usando cerâmica piezoelétricas em extensão e cisalhamento conectadas a circuitos híbridos ativo-passivos
Esta dissertação apresenta uma análise numérica do controle de vibrações estruturais através de cerâmicas piezoelétricas em extensão e em cisalhamento conectadas a circuitos ativo-passivos compostos por resistência, indutância e fonte de tensão. Para tal, um modelo de elementos finitos de vigas sanduíche com três camadas elásticas e/ou piezoe
Publicado em: 2008
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14. Controle operacional otimizado de sistemas de canais / Optimized operational control of systems of canals
This work presents a hydraulical model of control of otimização of systems of canals, constituted in three stretches, linked for 4 floodgates, where each stretch is segmented in 17 we. It is used theory of the regulator linear quadratic (RLQ), with the purpose to lead the system to the balance condition, exactly that it has variations and/or disturbances i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/12/2007
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15. Controles monovariáveis e multivariáveis aplicados a sistemas aeroespaciais fracamente ou fortemente acoplados / Monovariable and multivariable controls applied to weakly or strongly coupled aerospace systems
This work intends to study and compare two Classical (Single Input Single Output) Control design methods and three Modern (Multiple Input Multiple Output) Control design methods applied to weakly or heavily coupled aerospace systems. This work has as first application the Multi-Mission Platform - MMP currently under development at INPE. The models are develo
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/04/2006
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16. ROBUST CONTROL LQG/LTR WITH RECOVERY OF THE PROFIT OF THE MESH OF TRANSFERENCE / CONTROLE ROBUSTO LQG/LTR COM RECUPERAÇÃO DO GANHO DA MALHA DE TRANSFERÊNCIA
In this work is presented a method to solve the Eigenstructure Allocation pro- blem for multivariable dynamic systems by means of Robust Controllers Design Linear Quadratic Gaussian, LQG/LTR Loop transfer Recovery and Hierarchical Genetic Algorithm in three levels. It shows an unied method for controllers ro- bust design that are one systematical of the thre
Publicado em: 2006
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17. Estudos de um método para cálculo de ganhos da malha de controle de atitude de um lançador de satélites / Analytical method for computing the controller gains of a satellite launcher
In this work, the VLS (Satellite Launcher Vehicle) control gains are calculated applying a frozen poles technique for each 1-second interval, allowing that a linear time invariant analysis to be executed inside each time interval during all flight phases. The system control architecture is proportional-integral with derivative feedback, making the 3 gains (p
Publicado em: 2004
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18. Estudos de um método para cálculo de ganhos da malha de controle de atitude de um lançador de satélites / Analytical method for computing the controller gains of a satellite launcher
Neste trabalho, os ganhos do controlador do VLS são calculados aplicando-se a técnica de pólos congelados em intervalos de 1 segundo de vôo, permitindo que uma análise linear invariante seja adotada para cada intervalo de tempo ao longo de todas fases de vôo. Como a arquitetura de controle adotada é fixa (PID), os valores dos ganhos devem ser escalona
Publicado em: 2004
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19. Alocação computacional inteligente de autoestruturas para controle multivariavel
In this thesis a proposal for eigenstructure placement for multivariable linear dynamic systems by state feedback based on the linear quadratic regulator (LQR), multiobjective optimization, evolutionary computation and parallel programming is presented. The eigenstructure placement problem is formulated based on LQR designs and on an inequality method to con
Publicado em: 2000
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20. CONTRÔLE HYBRIDE ACTIFPASSIF DES VIBRATIONS DE STRUCTURES PAR DES MATÉRIAUX PIÉZOÉLECTRIQUES ET VISCOÉLASTIQUES : POUTRES SANDWICH/MULTICOUCHES INTELLIGENTES
This thesis presents a numerical analysis of the structural vibrations damping obtained by passive, active and hybrid active-passive damping treatments. For that, a finite element model of a sandwich beam which layers can be elastic, piezoelectric or viscoelastic is presented. It is validated through comparisons with analytical, experimental and numerical re
Publicado em: 2000
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21. Integrated structural/control optimization of a large space structure with articulation subject to the gravity-gradient torque.
Optimization has been playing a very important role in the orbit and attitude control, and structural design of spacecraft since the advent of the space era. It is well known that weight, space, energy, and time are among the most important constraints that guide the space missions planning. the optimization has a wide field of applications even if only the
Publicado em: 1998