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Doctoral Thesis
DOI
https://doi.org/10.11606/T.3.2017.tde-07112017-140120
Document
Author
Full name
Rodrigo Juliani Corrêa de Godoy
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2017
Supervisor
Committee
Garcia, Claudio (President)
Campos, Mário César Mello Massa de
Cruz, José Jaime da
Odloak, Darci
Perez, José Manuel Gonzalez Tubio
Title in English
Plantwide control: a review and proposal of an augmented hierarchical plantwide control design technique.
Keywords in English
Control design
Control structure selection
Control tuning
Multi-objective optimization
Optimal control
Optimal control tuning
Plantwide control
System identification
Abstract in English
The problem of designing control systems for entire plants is studied. A review of previous works, available techniques and current research challenges is presented, followed by the description of some theoretical tools to improve plantwide control, including the proposal of an augmented lexicographic multi-objective optimization procedure. With these, an augmented hierarchical plantwide control design technique and an optimal multi-objective technique for integrated control structure selection and controller tuning are proposed. The main contributions of these proposed techniques are the inclusion of system identification and optimal control tuning as part of the plantwide design procedure for improved results, support to multi-objective control specifications and support to any type of plant and controllers. Finally, the proposed techniques are applied to industrial benchmarks to demonstrate and validate its applicability.
Title in Portuguese
Controle plantwide: uma revisão e proposta de uma técnica de projeto de controle plantwide hierárquico ampliado.
Keywords in Portuguese
Controle (Teoria de sistemas e controle)
Controle de processos
Sistemas de controle
Abstract in Portuguese
O problema de projetar sistemas de controle para plantas inteiras é estudado. Uma revisão de trabalhos anteriores, técnicas disponíveis e atuais desafios de pesquisa é apresentada, seguida da descrição de algumas ferramentas teóricas para melhorar o controle plantwide, incluindo a proposta de um procedimento de otimização multi-objetivo lexicográfico aumentado. Com tais elementos, são propostas uma nova técnica hierárquica aumentada de projeto de sistemas de controle plantwide e uma técnica multi-objetivo para seleção de estrutura de controlador integrada à sintonia ótima do controlador. As principais contribuições das técnicas propostas são a inclusão de identificação de sistemas e sintonia ótima de controladores como parte do procedimento de projeto de controle plantwide para melhores resultados, suporte a especificações multi-objetivo e suporte a quaisquer tipos de plantas e controladores. Finalmente, as técnicas propostas são aplicadas a benchmarks industriais para demonstrar e validar sua aplicabilidade.
 
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Publishing Date
2017-11-08
 
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