Loop Shaping
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Optimizing the control system of cement milling: process modeling and controller tuning based on loop shaping procedures and process simulations
Based on a dynamical model of the grinding process in closed circuit mills, efficient efforts have been made to optimize PID controllers of cement milling. The process simulation is combined with an autoregressive model of the errors between the actual process values and the computed ones. Long term industrial data have been used to determine the model param
Braz. J. Chem. Eng.. Publicado em: 2014-03
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2. Sintonia de controladores PID sob o enfoque da identificação para controle
Essa tese baseia-se em dois tópicos relacionados ao campo de controle, com vistas à aplicação na área de controle de processos. Esses tópicos são o Controle PID Avan¸cado e a Identificação para Controle. Em ambos os casos, o controle robusto é uma influência marcante, seja através da caracterização dos limites e potenciais de aplicação de co
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/09/2008
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3. Aplicação de técnicas de controle robusto para o projeto de um piloto automático de altitude de aeronaves flexíveis.
Em sistemas de controle aeronáutico, aeronaves flexíveis são aquelas cuja dinâmica estrutural possui freqüências próximas às de corpo rígido. Filtros estruturais do tipo notch são tipicamente implementados quando existe separação suficiente entre o modo de maior freqüência da dinâmica de corpo rígido e o modo de menor freqüência da dinâmic
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/07/2008
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4. Projeto de controladores robustos com especificações temporais
O projeto de compensadores robustos com especificações no domínio do tempo visando ao acompanhamento do sinal de referência e a rejeição de distúrbios é discutido neste artigo do ponto de vista freqüencial. As condições de projeto são obtidas em função de modelos de referência, os quais contêm as especificações temporais associadas. Mostra-
Sba: Controle & Automação Sociedade Brasileira de Automatica. Publicado em: 2005-09
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5. Analysis and synthesis of robust control system with separable nonlinearities.
The objective of this thesis is to propose a design method for controllers to secure specified robust oscillation amplitude and frequency for separable nonlinear systems exhibiting unavoidable or desirable limit cycles. The design approach of robust limit cycle controllers introduced here can be used for autonomous systems with separable single-input-single-
Publicado em: 2003
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6. Multivariable robust control of an integrated nuclear power reactor
The design of the main control system of the CAREM nuclear power plant is presented. This plant is an inherently safe low-power nuclear reactor with natural convection on the primary coolant circuit and is self-pressurized with a steam dome on the top of the pressure vessel (PV). It is an integrated reactor as the whole primary coolant circuit is within the
Brazilian Journal of Chemical Engineering. Publicado em: 2002-12
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7. Pacemaker electrode implantation in patients with persistent left superior vena cava.
Four out of 661 consecutive patients with permanent endocardial VVI pacing had the pacing lead introduced through a persistent left superior vena cava. It was difficult to introduce the lead from the right atrium into the right ventricle because the tip of the lead tended to be deflected away from the tricuspid orifice. This difficulty was overcome by shapin
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8. Origin and evolution of the transcribed repeated sequences of the Y chromosome lampbrush loops of Drosophila hydei
The molecular evolution and patterns of conservation of clones from four Y chromosome lampbrush loops of Drosophila hydei were investigated. Each loop contains a discrete family of transcribed repeats that are only slightly conserved even in the hydei subgroup species. Sequencing of clones from the four D. hydei loops indicates that all transcribed repeats e
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9. Mutational analysis of the central domain of adenovirus virus-associated RNA mandates a revision of the proposed secondary structure.
Protein synthesis in adenovirus-infected cells is regulated during the late phase of infection. The rate of initiation is maintained by a small viral RNA, virus-associated (VA) RNAI, which prevents the phosphorylation of eukaryotic initiation factor eIF-2 by a double-stranded RNA-activated protein kinase, DAI. On the basis of nuclease sensitivity analysis, a
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10. Structure of human carboxypeptidase A4 with its endogenous protein inhibitor, latexin
The only endogenous protein inhibitor known for metallocarboxypeptidases (MCPs) is latexin, a 25-kDa protein discovered in the rat brain. Latexin, alias endogenous carboxypeptidase inhibitor, inhibits human CPA4 (hCPA4), whose expression is induced in prostate cancer cells after treatment with histone deacetylase inhibitors. hCPA4 is a member of the A/B subf
National Academy of Sciences.
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11. Antigen-binding specificities of antibodies are primarily determined by seven residues of VH.
Although the antigen-binding pocket of all antibodies consists of VL + VH dimers (where VL and VH represent immunoglobulin light and heavy chain regions, respectively), subgroups of their VH largely determine their antigen-binding specificities. This VH subgroup dependence automatically relegates subsidiary roles to VL as a whole and to the complementarity-d