Controle feedback de nível baseado em sensor de imagem aplicado ao equipamento misturador-decantador à inversão de fases (MDIF®)
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFRN |
Texto Completo: | https://repositorio.ufrn.br/jspui/handle/123456789/15779 |
Resumo: | The treatment of wastewaters contaminated with oil is of great practical interest and it is fundamental in environmental issues. A relevant process, which has been studied on continuous treatment of contaminated water with oil, is the equipment denominated MDIF® (a mixer-settler based on phase inversion). An important variable during the operation of MDIF® is the water-solvent interface level in the separation section. The control of this level is essential both to avoid the dragging of the solvent during the water removal and improve the extraction efficiency of the oil by the solvent. The measurement of oil-water interface level (in line) is still a hard task. There are few sensors able to measure oil-water interface level in a reliable way. In the case of lab scale systems, there are no interface sensors with compatible dimensions. The objective of this work was to implement a level control system to the organic solvent/water interface level on the equipment MDIF®. The detection of the interface level is based on the acquisition and treatment of images obtained dynamically through a standard camera (webcam). The control strategy was developed to operate in feedback mode, where the level measure obtained by image detection is compared to the desired level and an action is taken on a control valve according to an implemented PID law. A control and data acquisition program was developed in Fortran to accomplish the following tasks: image acquisition; water-solvent interface identification; to perform decisions and send control signals; and to record data in files. Some experimental runs in open-loop were carried out using the MDIF® and random pulse disturbances were applied on the input variable (water outlet flow). The responses of interface level permitted the process identification by transfer models. From these models, the parameters for a PID controller were tuned by direct synthesis and tests in closed-loop were performed. Preliminary results for the feedback loop demonstrated that the sensor and the control strategy developed in this work were suitable for the control of organic solvent-water interface level |
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Fernandes, Lenita da Silva Luciohttp://lattes.cnpq.br/3699377096472387http://lattes.cnpq.br/5058617634570704Paulo, João Bosco de Araújohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4787949Y0#BancasSilva, Fabrício Machadohttp://lattes.cnpq.br/0221220703324031Fernandes Júnior, Wilaci Eutrópiohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4701139Z9Cavalcanti, Anderson Luiz de Oliveirahttp://lattes.cnpq.br/7224754476792019Oliveira, Jackson Araújo de2014-12-17T15:01:20Z2010-03-242014-12-17T15:01:20Z2009-09-03FERNANDES, Lenita da Silva Lucio. Level feedback control using an image-based detector applied to a mixer-settler based on phase inversion equipment (MDIF®).. 2009. 116 f. Dissertação (Mestrado em Pesquisa e Desenvolvimento de Tecnologias Regionais) - Universidade Federal do Rio Grande do Norte, Natal, 2009.https://repositorio.ufrn.br/jspui/handle/123456789/15779The treatment of wastewaters contaminated with oil is of great practical interest and it is fundamental in environmental issues. A relevant process, which has been studied on continuous treatment of contaminated water with oil, is the equipment denominated MDIF® (a mixer-settler based on phase inversion). An important variable during the operation of MDIF® is the water-solvent interface level in the separation section. The control of this level is essential both to avoid the dragging of the solvent during the water removal and improve the extraction efficiency of the oil by the solvent. The measurement of oil-water interface level (in line) is still a hard task. There are few sensors able to measure oil-water interface level in a reliable way. In the case of lab scale systems, there are no interface sensors with compatible dimensions. The objective of this work was to implement a level control system to the organic solvent/water interface level on the equipment MDIF®. The detection of the interface level is based on the acquisition and treatment of images obtained dynamically through a standard camera (webcam). The control strategy was developed to operate in feedback mode, where the level measure obtained by image detection is compared to the desired level and an action is taken on a control valve according to an implemented PID law. A control and data acquisition program was developed in Fortran to accomplish the following tasks: image acquisition; water-solvent interface identification; to perform decisions and send control signals; and to record data in files. Some experimental runs in open-loop were carried out using the MDIF® and random pulse disturbances were applied on the input variable (water outlet flow). The responses of interface level permitted the process identification by transfer models. From these models, the parameters for a PID controller were tuned by direct synthesis and tests in closed-loop were performed. Preliminary results for the feedback loop demonstrated that the sensor and the control strategy developed in this work were suitable for the control of organic solvent-water interface levelO tratamento de águas residuais contaminadas com óleo é um assunto de grande interesse prático, principalmente no que se refere às questões ambientais. Um processo bastante relevante que vem sendo estudado no tratamento semi-contínuo de águas contaminadas com óleo é o Misturador-Decantador à Inversão de Fases (MDIF®). Uma variável importante na operação do sistema MDIF® é o nível da interface solvente orgânico/água na seção de separação. O controle deste nível é essencial tanto para evitar o arraste de solvente pela água como para melhorar a eficiência de remoção do óleo pelo solvente. A despeito disso, a medida (em linha) da interface de separação ainda constitui uma tarefa difícil e são poucos os sensores capazes de medir tal interface. No caso de sistemas em escala de bancada, não há sensores de interface com dimensões compatíveis. O presente trabalho teve como objetivo implementar um sistema de controle de nível para a interface de separação (solvente orgânico/água) no equipamento MDIF®. A medida de nível da interface é baseada na aquisição e tratamento de imagens obtidas dinamicamente por uma câmera (webcam). A estratégia de controle foi desen olvida para operar em modo feedback, onde a medida de nível obtida pelo sensor de imagem é comparada ao nível desejado e a ação de controle é tomada sobre uma válvula, seguindo uma lei do tipo PID. Um programa de aquisição de dados e controle foi desenvolvido em Fortran para realizar as seguintes tarefas: aquisição de imagem, identificação da interface solvente orgânico/água, tomada de decisões, envio dos sinais de controle e registro de dados em arquivo. Alguns experimentos em malha aberta foram realizados, onde perturbações aleatórias tipo pulso foram aplicadas na variável de entrada (vazão de saída de água). As respostas do nível de interface permitiram a identificação do processo através de modelos de função de transferência. A partir destes modelos, os parâmetros para o controlador PID foram sintonizados por síntese direta e testes em malha fechada foram realizados. Os resultados preliminares da malha feedback demonstraram que o sensor e a estratégia de controle desenvolvidos neste trabalho foram satisfatórios para controlar o nível da interface solvente orgânico/águaConselho Nacional de Desenvolvimento Científico e Tecnológicoapplication/pdfporUniversidade Federal do Rio Grande do NortePrograma de Pós-Graduação em Engenharia QuímicaUFRNBRPesquisa e Desenvolvimento de Tecnologias RegionaisMDIF®Controle de processosSensor baseado em imagemNível de interface solvente orgânico/águaMDIF®Process controlImage-based detectorOrganic solvent-water interface levelCNPQ::ENGENHARIAS::ENGENHARIA QUIMICAControle feedback de nível baseado em sensor de imagem aplicado ao equipamento misturador-decantador à inversão de fases (MDIF®)Level feedback control using an image-based detector applied to a mixer-settler based on phase inversion equipment (MDIF®).info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRNinstname:Universidade Federal do Rio Grande do Norte (UFRN)instacron:UFRNORIGINALLenitaSLF.pdfapplication/pdf2627101https://repositorio.ufrn.br/bitstream/123456789/15779/1/LenitaSLF.pdf55e09659bccdbe036d1c49a7fea4b6caMD51TEXTLenitaSLF.pdf.txtLenitaSLF.pdf.txtExtracted texttext/plain180966https://repositorio.ufrn.br/bitstream/123456789/15779/6/LenitaSLF.pdf.txta1afc137ed7fe1213276980777dd23e5MD56THUMBNAILLenitaSLF.pdf.jpgLenitaSLF.pdf.jpgIM Thumbnailimage/jpeg4416https://repositorio.ufrn.br/bitstream/123456789/15779/7/LenitaSLF.pdf.jpgefd8db88b0254dd0bf9616ae4b4669eaMD57123456789/157792017-11-02 03:14:24.309oai:https://repositorio.ufrn.br:123456789/15779Repositório de PublicaçõesPUBhttp://repositorio.ufrn.br/oai/opendoar:2017-11-02T06:14:24Repositório Institucional da UFRN - Universidade Federal do Rio Grande do Norte (UFRN)false |
dc.title.por.fl_str_mv |
Controle feedback de nível baseado em sensor de imagem aplicado ao equipamento misturador-decantador à inversão de fases (MDIF®) |
dc.title.alternative.eng.fl_str_mv |
Level feedback control using an image-based detector applied to a mixer-settler based on phase inversion equipment (MDIF®). |
title |
Controle feedback de nível baseado em sensor de imagem aplicado ao equipamento misturador-decantador à inversão de fases (MDIF®) |
spellingShingle |
Controle feedback de nível baseado em sensor de imagem aplicado ao equipamento misturador-decantador à inversão de fases (MDIF®) Fernandes, Lenita da Silva Lucio MDIF® Controle de processos Sensor baseado em imagem Nível de interface solvente orgânico/água MDIF® Process control Image-based detector Organic solvent-water interface level CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
title_short |
Controle feedback de nível baseado em sensor de imagem aplicado ao equipamento misturador-decantador à inversão de fases (MDIF®) |
title_full |
Controle feedback de nível baseado em sensor de imagem aplicado ao equipamento misturador-decantador à inversão de fases (MDIF®) |
title_fullStr |
Controle feedback de nível baseado em sensor de imagem aplicado ao equipamento misturador-decantador à inversão de fases (MDIF®) |
title_full_unstemmed |
Controle feedback de nível baseado em sensor de imagem aplicado ao equipamento misturador-decantador à inversão de fases (MDIF®) |
title_sort |
Controle feedback de nível baseado em sensor de imagem aplicado ao equipamento misturador-decantador à inversão de fases (MDIF®) |
author |
Fernandes, Lenita da Silva Lucio |
author_facet |
Fernandes, Lenita da Silva Lucio |
author_role |
author |
dc.contributor.authorID.por.fl_str_mv |
|
dc.contributor.authorLattes.por.fl_str_mv |
http://lattes.cnpq.br/3699377096472387 |
dc.contributor.advisorID.por.fl_str_mv |
|
dc.contributor.advisorLattes.por.fl_str_mv |
http://lattes.cnpq.br/5058617634570704 |
dc.contributor.advisor-co1ID.por.fl_str_mv |
|
dc.contributor.referees1.pt_BR.fl_str_mv |
Silva, Fabrício Machado |
dc.contributor.referees1ID.por.fl_str_mv |
|
dc.contributor.referees1Lattes.por.fl_str_mv |
http://lattes.cnpq.br/0221220703324031 |
dc.contributor.referees2.pt_BR.fl_str_mv |
Fernandes Júnior, Wilaci Eutrópio |
dc.contributor.referees2ID.por.fl_str_mv |
|
dc.contributor.referees2Lattes.por.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4701139Z9 |
dc.contributor.referees3.pt_BR.fl_str_mv |
Cavalcanti, Anderson Luiz de Oliveira |
dc.contributor.referees3ID.por.fl_str_mv |
|
dc.contributor.referees3Lattes.por.fl_str_mv |
http://lattes.cnpq.br/7224754476792019 |
dc.contributor.author.fl_str_mv |
Fernandes, Lenita da Silva Lucio |
dc.contributor.advisor-co1.fl_str_mv |
Paulo, João Bosco de Araújo |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4787949Y0#Bancas |
dc.contributor.advisor1.fl_str_mv |
Oliveira, Jackson Araújo de |
contributor_str_mv |
Paulo, João Bosco de Araújo Oliveira, Jackson Araújo de |
dc.subject.por.fl_str_mv |
MDIF® Controle de processos Sensor baseado em imagem Nível de interface solvente orgânico/água |
topic |
MDIF® Controle de processos Sensor baseado em imagem Nível de interface solvente orgânico/água MDIF® Process control Image-based detector Organic solvent-water interface level CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
dc.subject.eng.fl_str_mv |
MDIF® Process control Image-based detector Organic solvent-water interface level |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
description |
The treatment of wastewaters contaminated with oil is of great practical interest and it is fundamental in environmental issues. A relevant process, which has been studied on continuous treatment of contaminated water with oil, is the equipment denominated MDIF® (a mixer-settler based on phase inversion). An important variable during the operation of MDIF® is the water-solvent interface level in the separation section. The control of this level is essential both to avoid the dragging of the solvent during the water removal and improve the extraction efficiency of the oil by the solvent. The measurement of oil-water interface level (in line) is still a hard task. There are few sensors able to measure oil-water interface level in a reliable way. In the case of lab scale systems, there are no interface sensors with compatible dimensions. The objective of this work was to implement a level control system to the organic solvent/water interface level on the equipment MDIF®. The detection of the interface level is based on the acquisition and treatment of images obtained dynamically through a standard camera (webcam). The control strategy was developed to operate in feedback mode, where the level measure obtained by image detection is compared to the desired level and an action is taken on a control valve according to an implemented PID law. A control and data acquisition program was developed in Fortran to accomplish the following tasks: image acquisition; water-solvent interface identification; to perform decisions and send control signals; and to record data in files. Some experimental runs in open-loop were carried out using the MDIF® and random pulse disturbances were applied on the input variable (water outlet flow). The responses of interface level permitted the process identification by transfer models. From these models, the parameters for a PID controller were tuned by direct synthesis and tests in closed-loop were performed. Preliminary results for the feedback loop demonstrated that the sensor and the control strategy developed in this work were suitable for the control of organic solvent-water interface level |
publishDate |
2009 |
dc.date.issued.fl_str_mv |
2009-09-03 |
dc.date.available.fl_str_mv |
2010-03-24 2014-12-17T15:01:20Z |
dc.date.accessioned.fl_str_mv |
2014-12-17T15:01:20Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
FERNANDES, Lenita da Silva Lucio. Level feedback control using an image-based detector applied to a mixer-settler based on phase inversion equipment (MDIF®).. 2009. 116 f. Dissertação (Mestrado em Pesquisa e Desenvolvimento de Tecnologias Regionais) - Universidade Federal do Rio Grande do Norte, Natal, 2009. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufrn.br/jspui/handle/123456789/15779 |
identifier_str_mv |
FERNANDES, Lenita da Silva Lucio. Level feedback control using an image-based detector applied to a mixer-settler based on phase inversion equipment (MDIF®).. 2009. 116 f. Dissertação (Mestrado em Pesquisa e Desenvolvimento de Tecnologias Regionais) - Universidade Federal do Rio Grande do Norte, Natal, 2009. |
url |
https://repositorio.ufrn.br/jspui/handle/123456789/15779 |
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por |
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Universidade Federal do Rio Grande do Norte |
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Programa de Pós-Graduação em Engenharia Química |
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UFRN |
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BR |
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Pesquisa e Desenvolvimento de Tecnologias Regionais |
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Universidade Federal do Rio Grande do Norte |
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