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Control of transients in water distribution networks by H¥ Control

Terra,M. H.; Reis,J. A. T. dos; Chaudhry,F. H.; Souza,R. Schiavetto de
Fonte: The Brazilian Society of Mechanical Sciences Publicador: The Brazilian Society of Mechanical Sciences
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/11/2002 EN
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55.82%
In this work, a controller for regulating the transients in water distribution networks is established. The control technique is the H¥ Control. The developed controller is applied to a water distribution network and the results of this application demonstrate that the technique allowed the establishment of a robust controller, capable of attenuating the disturbances in a suitable way, being effective in controlling the oscillations of the state variables in question.

Improved H2 and H¥ conditions for robust analysis and control synthesis of linear systems

Trofino,Alexandre; Coutinho,Daniel F.; Barbosa,Karina A.
Fonte: Sociedade Brasileira de Automática Publicador: Sociedade Brasileira de Automática
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/12/2005 EN
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45.77%
This paper proposes improved H-2 and H-infinity conditions for continuous-time linear systems with polytopic uncertainties based on a recent result for the discrete-time case. Basically, the performance conditions are built on an augmented-space with additional multipliers resulting in a decoupling between the Lyapunov and system matrices. This nice property is used to develop new conditions for the robust stability, performance analysis, and control synthesis of linear systems using parameter dependent Lyapunov functions in a numerical tractable way.

H [infinity] optimal control for the attitude control and momentum management of the space station A. Pothiawala, M.A. Dahleh.

Fonte: Laboratory for Information and Decision Systems, Massachusetts Institute of Technology] Publicador: Laboratory for Information and Decision Systems, Massachusetts Institute of Technology]
Formato: 81 p.; 3335305 bytes; application/pdf
ENG
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Cover title. On t.p. "[infinity]" is the mathematical symbol and subscript.; Includes bibliographical references (p. 52-53).; Supported by the National Science Foundation. NSF 8810178-ECS Supported by the U.S. Army Research Office (Center for Intelligent Control Systems) DAAL03-86-K-0171

Optimal robust H-[infinity] control

Fonte: Massachusetts Institute of Technology, Laboratory for Information and Decision Systems] Publicador: Massachusetts Institute of Technology, Laboratory for Information and Decision Systems]
Formato: 8 p.; 642961 bytes; application/pdf
ENG
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35.76%
Stephen D. Patek, Michael Athans.; Caption title. On t.p. "[infinity]" appears as mathematical symbol.; Includes bibliographical references (p. 7-8).

Robust H[infinity] control via quadratic stabilization

Patek, Stephen D. (Stephen David)
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 129 leaves; 6904124 bytes; 6903884 bytes; application/pdf; application/pdf
ENG
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by Stephen David Patek.; Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.; On t.p., "[infinity]" appears subscript, as the mathematical symbol.; Includes bibliographical references (leaves 126-129).

An application of robust H₂/H[infinity] control synthesis to launch vehicle ascent by Tyler Nicklaus Hague.

Hague, Tyler Nicklaus, 1975-
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 286 p.; 21113189 bytes; 21112940 bytes; application/pdf; application/pdf
ENG
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35.79%
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2000.; Also available online at the MIT Theses Online homepage .; In title on t.p., "[infinity]" appears as the symbol in subscript.; Includes bibliographical references (p. 283-286).

Control system design using H [infinity] optimization

Playter, Robert R. (Robert Randall)
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: x, 122 leaves; 5173860 bytes; 5180306 bytes; application/pdf; application/pdf
ENG
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45.76%
by Robert Playter.; Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1988.; The bracketed word appears as the mathematical infinity symbol on the title page.; Includes bibliographical references.

H[infinity] static feedback control with and without imaginary axis zeros for missle autopilot design

Hamby, Eric Scott
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 104 p.
ENG
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35.81%
by Eric Scott Hamby.; Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1992.; On t.p., "[infinity]" appears in subscript as the symbol for infinity.; Includes bibliographical references (p. 103-104).

Optimal economic planning and control for the management of ecosystems

Macksamie, Kevin
Fonte: Rochester Instituto de Tecnologia Publicador: Rochester Instituto de Tecnologia
Tipo: Tese de Doutorado
EN_US
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In recent years the interest on sustainable systems has increased significantly. Among the many interested problems, creating and restoring sustainable ecosystems is a challenging and complex problem. One of the fundamental problems within this area is the imbalance between species that have a predator-prey relationship. Solutions involving management have become an integral player in many environments. Management systems typically use ad hoc methods to develop harvesting policies to control the populations of species to desired numbers. In order to amalgamate intelligence and structure, ecological systems require a diverse research effort from three primary fields: ecology, economics, and control theory. In this thesis, all three primary fields aforementioned are researched to develop a theoretical framework that includes an optimal trajectory planning system that exploits an ecosystem to maximize profits for the supporting community, and a robust control system design to track the optimal trajectories subjected to exogenous disturbances. Population ecology is used to select a model that identifies the key characteristics a management system needs to understand the behavior of the natural environment. A bioeconomic model is developed to relate the species populations to revenue. The nonlinear ecosystem is transformed into a linear parameter-varying (LPV) system that is then controlled using hinf synthesis and the gain scheduling methodology. The consequences of the results in this thesis are that optimal trajectories of an ecosystem can be obtained by constructing and solving a nonlinear programming problem (NLP)...