Banca de QUALIFICAÇÃO: JOSE RICARDO BEZERRA DE ARAUJO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : JOSE RICARDO BEZERRA DE ARAUJO
DATE: 30/08/2024
TIME: 09:00
LOCAL: Sala virtual do Google Meet: meet.google.com/xfm-gawi-xoe
TITLE:

MIMO PID Control Design for Second Order Systems with Time-Delay

KEY WORDS:

PID Control; MIMO systems; Second-order systems; Time-delay systems;  Frequency response; Genetic Algorithm.

PAGES: 40
BIG AREA: Engenharias
AREA: Engenharia Elétrica
SUBÁREA: Eletrônica Industrial, Sistemas e Controles Eletrônicos
SPECIALTY: Controle de Processos Eletrônicos, Retroalimentação
SUMMARY:

Systems that originate from second-degree differential equations, or simply second-order systems, have great relevance in the study of control systems, due to their broad power of modular situations, such as mechanical vibrations, resonance and even specific processes in areas such as interference with certain biological processes. Working with this type of model, instead of first-order state models, can bring some benefits, such as the possibility of creating more sophisticated controls and clearer frequency analysis. In practice, these systems suffer from inherent delays in various parts of the project, such as sensor measurement, generating effects against the analysis, such as reduced performance, instability and oscillations. Considering that even small delays can generate disturbing disturbances in the system, a system receptance approach is valid, which can accurately measure the delay through a frequency study. This master's qualification aims to develop multivariable PID drivers for linear dynamic systems with multiple inputs and outputs (MIMO) that have delay in actuation and are described by a system of second-order differential equations. The proposal uses the frequency domain model known as the receptance matrix, which can be precisely obtained experimentally and which allows the effect of delay to be treated without approximations. Closed-loop stability is ensured using so-called generalized Nyquist classifications, selected by so-called eigenloci diagrams. A given margin of stability is obtained by imposing a minimum distance between the eigenloci and the critical point. An optimization problem is formulated to calculate the PID driver gains that impose this margin and minimize a temporal response performance index, which is solved by the Genetic Algorithm. Numerical examples illustrate the proposal.

COMMITTEE MEMBERS:
Presidente - 1328152 - CARLOS EDUARDO TRABUCO DOREA
Interno - 1577068 - KURIOS IURI PINHEIRO DE MELO QUEIROZ
Externo ao Programa - 350693 - ANDRE LAURINDO MAITELLI - UFRNExterno à Instituição - JOSÉ MÁRIO ARAÚJO - IFBA