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Previous issue date: 2017-12-22 / O controle autom?tico de processos ? uma demanda crescente nas ind?strias que buscam
t?cnicas que automatizem a sintonia dos sistemas de controle e que garantam efici?ncia,
qualidade e seguran?a. Este trabalho tem como objetivo implementar um m?todo de
avalia??o e ressintonia de controladores PI em Controlador L?gico Program?vel (CLP), a
fim de melhorar a robustez do sistema. O m?todo ? inspirado em trabalhos j? existentes
na literatura e possui duas etapas, a primeira etapa ? de avalia??o de robustez do controlador,
em que se estima suas margens de ganho e de fase. Na segunda etapa, os par?metros
do controlador PI s?o corrigidos para assegurar que os crit?rios de robustez n?o sejam
violados. Pretendeu-se programar o m?todo diretamente num CLP para que funcione em
conjunto com o seu controlador. Inicialmente, resultados de simula??es num?ricas s?o
apresentados para ilustrar o funcionamento do m?todo. Em seguida, ? descrita a implementa??o
do m?todo por meio da programa??o de CLP. Resultados de experimentos em
plantas reais controladas por CLP ilustram a efetividade do m?todo. / Automatic process control is a growing demand in industries that seek techniques that
automate the tuning of control systems and ensure efficiency, quality and safety. This
work aims to implement a method of assessment and readjustment of PI controllers in
Programmable Logic Controller (PLC), in order to improve the robustness of the system.
The method is inspired by works from the literature and has two stages, the first step
is to evaluate the robustness of the controller, in which its gain and phase margins are
estimated. In the second step the parameters of the PI controller are adjusted to ensure
that the robustness criteria are not violated. It was intended to program the method directly
into a PLC to work together with its controller. Initially, results of numerical simulations
are presented to illustrate the method?s operation. Then, the implementation of the method
through PLC programming is described. Experiments results in real plants controlled by
PLC illustrate the effectiveness of the method.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/24972 |
| Date | 22 December 2017 |
| Creators | Rego, Everton Jos? de Castro |
| Contributors | 55768245553, Maitelli, Andr? Laurindo, 42046637100, Gabriel Filho, Oscar, 11376040697, Barros, P?ricles Rezende, 18127681415, Dorea, Carlos Eduardo Trabuco |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM ENGENHARIA EL?TRICA E DE COMPUTA??O, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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