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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Estrat?gia de escalonamento de controladores PID baseado em regras Fuzzy para redes industriais foundation fieldbus usando blocos padr?es

Lima, F?bio Soares de 15 July 2004 (has links)
Made available in DSpace on 2014-12-17T14:56:03Z (GMT). No. of bitstreams: 1 FabioSL.pdf: 932823 bytes, checksum: c32fee13ca97b70482987a8228b171cd (MD5) Previous issue date: 2004-07-15 / The main objective of work is to show procedures to implement intelligent control strategies. This strategies are based on fuzzy scheduling of PID controllers, by using only standard function blocks of this technology. Then, the standardization of Foundation Fieldbus is kept. It was developed an environment to do the necessary tests, it validates the propose. This environment is hybrid, it has a real module (the fieldbus) and a simulated module (the process), although the control signals and measurement are real. Then, it is possible to develop controllers projects. In this work, a fuzzy supervisor was developed to schedule a network of PID controller for a non-linear plant. Analyzing its performance results to the control and regulation problem / Com o objetivo de se manter a padroniza??o Foundation Fieldbus, neste trabalho s?o apresentados procedimentos para se implementar estrat?gias de controle inteligente, baseadas em escalonamento nebuloso de controladores PID, utilizando-se apenas blocos funcionais padr?es dessa tecnologia. Para validar a proposta, foi desenvolvido um ambiente para realiza??o dos testes necess?rios. Este ambiente ? h?brido, ou seja, possui uma parte real (a rede industrial) e uma parte simulada (o processo), por?m os sinais de controle e medi??o s?o reais. Desta forma, ? poss?vel desenvolver projetos de controladores. Neste trabalho desenvolveu-se um supervisor fuzzy para escalonar uma rede de controladores PID para uma determinada planta n?o-linear, sendo analisados seus resultados de desempenho tanto para o problema de controle quanto de regula??o

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