Proposta de identificação recursiva de sistemas dinâmicos não lineares baseada em modelo nebuloso Takagi-sugeno inverso: uma abordagem direta no contexto do espaço de estados com observador de Estados

Detalhes bibliográficos
Ano de defesa: 2019
Autor(a) principal: MAGALHÃES, Adriano Mendes lattes
Orientador(a): SERRA, Ginalber Luiz de Oliveira lattes
Banca de defesa: SERRA, Ginalber Luiz de Oliveira lattes, SOUZA, Francisco das Chagas de lattes, CORTES, Omar Andres Carmona lattes
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal do Maranhão
Programa de Pós-Graduação: PROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA DE ELETRICIDADE/CCET
Departamento: DEPARTAMENTO DE ENGENHARIA DA ELETRICIDADE/CCET
País: Brasil
Palavras-chave em Português:
Palavras-chave em Inglês:
Área do conhecimento CNPq:
Link de acesso: https://tedebc.ufma.br/jspui/handle/tede/3020
Resumo: In the areas of control and system identification, inverse modeling from experimental data is one of the major challenges for nonlinear dynamic systems based control strategies. Therefore, in this dissertation, a proposal for recursive inverse identification of nonlinear dynamic systems based on Takagi-Sugeno fuzzy model and structured in state space with state observer is presented, resulting in a inverse Takagi-Sugeno fuzzy model. To obtain the <antecedent proposition> of this model, this proposal uses the Gustafson-Kessel (GK) fuzzy clustering methodology in a time sliding data window, achieving static and dynamic estimation aspects. In order to obtain the <consequent proposition>, this proposal works with a Kalman observer state-space structure, which has been defining for system inverse mapping at each operation point, resulting in inverse fuzzy local submodels. To estimate the parameters of these submodels, the Kalman filter / Observer IDentification (OKID) methodology is used. Furthermore, to demonstrate the proposed methodology applicability, experimental results, which are concerning to a continuous stirring tank reactor, a Hammerstain model benchmark and a helicopter with two degree of freedom, are presented as case studies. Then, analyzes and final considerations highlight aspects of the optimal experiment, which is resulting from each case study.