State Feedback Control
Mostrando 25-36 de 94 artigos, teses e dissertações.
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25. Aeroservoelastic analysis of the blade-sailing phenomenon in the helicopter-ship dynamic interface.
This thesis proposes a Rotary-Wing Aeroservoelasticity approach to the modeling, analysis and control of the blade-sailing phenomenon in the helicopter-ship dynamic interface (DI), based on the identification, response evaluation and control of flow and ship motion induced loads, during the engagement/disengagement flight regimes, in order to establish some
Publicado em: 2007
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26. Dynamics and control of heat exchanger networks / Dinamica e controle de redes de trocadores de calor
Energy integration among chemical process streams can lead to quite complex heat exchanger networks (HEN) with difficulties in terms of controI. In this work HEN dynamics and steady state aspects were addressed with the aim of proposing a control strategy that minimizes utility consumption and satisfies imposed specifications. A steady state model of the HEN
Publicado em: 2007
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27. Active flutter suppression in a 2-D airfoil using linear matrix inequalities techniques
Flutter is an in-flight vibration of flexible structures caused by energy in the airstream absorbed by the lifting surface. This aeroelastic phenomenon is a problem of considerable interest in the aeronautic industry, because flutter is a potentially destructive instability resulting from an interaction between aerodynamic, inertial, and elastic forces. To o
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2006-03
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28. Robust MPC with output feedback. / Controle preditivo robusto com realimentação de saída.
In this work, it is presented a contribution to the design of a robust MPC with output feedback, input constraints and uncertain model. This work extends existing approaches by considering a particular non-minimal state space model, which transforms the output feedback strategy into a state feedback strategy. The controller is developed to the case in which
Publicado em: 2006
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29. Stability analysis and state feedback design of polytopic dynamic systems via multipliers / Analise de estabilidade e realimentação de estado de sistemas dinamicos politopicos via multiplicadores
This thesis is devoted to analysis and controllers design for polytopic systems in the Linear Matrix Inequalities (LMls) and Multipliers framework. We develop concepts related to the analysis of dynamic systems stability in terms of multipliers, so we are able to provide sufficient conditions for robust stability and performance. Moreover, we introduce param
Publicado em: 2006
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30. Uma representaÃÃo flexÃvel de controladores para animaÃÃo fisicamente realista de personagens virtuais / A flexible representation of controllers for physically realistic animation of virtual personages
We propose an improved representation of controllers which uses high-level sensors and possess a general and intuitive structure that offers the animator several types of parameters to manipulate. This structure, with the feedback signals provided by its sensors, allows that several state machines act simultaneously on the model, or in a subset of its actuat
Publicado em: 2006
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31. CONTROLE E AVALIAÇÃO DO PLANEJAMENTO ESTRATÉGICO Um estudo de caso em uma indústria de bebidas
This work presents, through a study of case in a beverages enterprise located in Rio Grande do State, a control and evaluation model letting the strategic plannings accompaniment, integrating three tools: action plans control, budgetary plan and fulfillment indicators, which orientate the politics organization established, lay the way to support the question
Publicado em: 2006
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32. Guaranteed cost fuzzy controllers for a class of uncertain nonlinear dynamic systems
Stability analysis and a systematic robust fuzzy control design for uncertain nonlinear systems with polytopic uncertainties are presented. The approach given uses the T-S fuzzy systems which are represented by a family of local uncertain linear systems with aggregation. The resulting fuzzy controller is a blending of state feedback gains obtained from a gua
Computational & Applied Mathematics. Publicado em: 2005-04
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33. 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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34. Estabilidade e controle de sistemas lineares variantes no tempo e de sistemas chaveados lineares
This thesis presents contributions to the solution of problems of stability analysis and control synthesis applied to linear systems with time-varying parameters belonging to a polytope and to switched linear systems subject to arbitrary switching functions using linear matrix inequality conditions based on Lyapunov functions. Concerning linear time-varying
Publicado em: 2005
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35. State feedback fuzzy-model-based control for Markovian jump nonlinear systems
Neste artigo, apresentam-se projetos de controladores fuzzy para uma classe de sistemas não-lineares com saltos Markovianos. Uma modelagem fuzzy é apresentada para representar esta classe de sistemas na vizinhança de pontos de operação escolhidos. A estrutura do sistema fuzzy é composta de dois níveis, um para descrição dos saltos Markovianos e outr
Sba: Controle & Automação Sociedade Brasileira de Automatica. Publicado em: 2004-09
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36. Including model uncertainty in the model predictive control with output feedback
This paper addresses the development of an efficient numerical output feedback robust model predictive controller for open-loop stable systems. Stability of the closed loop is guaranteed by using an infinite horizon predictive controller and a stable state observer. The performance and the computational burden of this approach are compared to a robust predic
Brazilian Journal of Chemical Engineering. Publicado em: 2002-12