Industrial Loops
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. CONTROL PROPOSAL FOR A HIGH PURITY COLUMN BASED ON THE SEPARATION OF VARIABLES BY THE INDEPENDENT COMPONENT ANALYSIS METHOD
Abstract Many industries are complex when it comes to operation mode. In order to reduce the problems related to strong coupling in these processes, the search for the incorporation of artificial intelligence devices has shown an increasing trend in recent years. Due to this complexity and control in multivariable processes, diagnosis and fault monitoring in
Braz. J. Chem. Eng.. Publicado em: 2017-01
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2. Detection and qualification of friction in control valves. / Detecção e quantificação de atrito em válvulas de controle.
This work will study methods for detection and quantification of friction in control valves. These valves are the main final elements of control loops in industrial processes. The presence of friction can increase the variability of the control loop, causing loss of product quality, increase need of maintenance and significant economical impacts. Many studie
Publicado em: 2009
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3. Abordagens industriais ambientais : solucionar problemas de poluição ou buscar sustentabilidade ambiental? / The industrial environmental approaches : solving pollution problems or searching for environmental sustainability?
The industrial sector has began, in the 21st century, to rethink and redesign its production processes aiming to minimize natural resources depletion, to foster the use of environmental friendly materials, to research the impact related to the products throughout their life cycle, and to recognize the interdependence between environment and industrial system
Publicado em: 2008
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4. Design and development of 4-20mA signal conditioner with optical isolation / Projeto e desenvolvimento de um condicionador de sinais com saida 4-20mA com isolamento optico
In this work it is presented the design, development and implementation of a low cost and versatile signal conditioner which is similar to the products available in the Brazilian market, most of them imported. The developed equipment performs the conversion, filtering, isolation and conditioning of small control signals from various types of sensors and tran
Publicado em: 2006
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5. Ambiente Educacional Multifuncional Integrado para Sintonia e Avaliação do Desempenho de Malhas Industriais de Controle
Industrial processes as well as the production based on the philosophy of quality assurance demand controllers that work facilities with their finely parameters, independent of the load situations and disturbances. A lot has been spoken regarding the PID controllers tuning, however, still, most is used in way PI or they possess adjusted parameters in an inad
Publicado em: 2006
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6. Gestão de utilidades na indústria : uma abordagem sistêmica
O trabalho em questão aborda o tema da necessidade de redução dos custos operacionais das indústrias utilizando-se de um método de gestão mais eficaz de utilidades, mais especificamente dos insumos naturais energia elétrica, água e gás ou óleo combustível, além do descarte de efluentes líquidos e rejeitos sólidos. O objetivo do mesmo é, atrav�
Publicado em: 27/10/2005
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7. Comparação do desempenho de um sistema de refrigeração para resfriamento de liquido, controlado a diferentes modos de controle. / Comparison of the system performancefor liquid refrigeration, controlled cooling the different ways of control.
A prototype of refrigeration system in a chiller plant was assembled and instrumented for development of a conventional and fuzzy controllers. Fuzzy controls are increasingly being applied to industrial process especially in process with complex mathematical modeling. The capacity of action in a system controlled by a fuzzy logic is based only on a expert kn
Publicado em: 2003
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8. Controle "DMC" de um processo de fermentação alcoolica continua em escala industrial
The main subject of this work is the application and development of the advanced predictive control strategy, DMC Dynamic Matrix ControI , to an industrial continuous fermentation process in multiple stages with cells recyc1e. This fermentation process presents higher nonlinearities (a characteristics of distributed systems) and time-delay in the measurement
Publicado em: 1996
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9. Modelagem, simulação e controle de fermentação alcoolica continua em escala industrial
The aims of this work concern with the development of an optimal design of an industrial plant for continuous alcohol fermentation and the development of the most adequate control strategy for such a plant. Through mathematical modeling and computer simulation an optimal design was obtained, for the Brazilian industrial operating conditions, which consists o
Publicado em: 1994
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10. Projeto e otimização de redes de trocadores de calor
In this work a computational program was developed interfacing heat exchanger network synthesis and detailed heat exchanger design. The program uses the concepts of Pinch Technology. To the network synthesis are defined initially the targets with respect to the global minimumcost, optimum ATmin, minimum exchange area, minimum number of units and the hot and
Publicado em: 1994
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11. Molecular Cloning, Sequencing, and Expression of omp-40, the Gene Coding for the Major Outer Membrane Protein from the Acidophilic Bacterium Thiobacillus ferrooxidans†
Thiobacillus ferrooxidans is one of the chemolithoautotrophic bacteria important in industrial biomining operations. Some of the surface components of this microorganism are probably involved in adaptation to their acidic environment and in bacterium-mineral interactions. We have isolated and characterized omp40, the gene coding for the major outer membrane
American Society for Microbiology.