Exact fuzzy observer for a baker’s yeast fed-batch fermentation process

The purpose of this work is to design an exact fuzzy observer for a bioprocess switching between two different metabolic states. A fed-batch baker's yeast culture is modeled by two sub-models: a respiro-fermentative state with ethanol production and a respirative state with ethanol consumption....

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Detalhes bibliográficos
Autor principal: Herrera, Enrique (author)
Outros Autores: Castillo, Bernardino (author), Ramírez, Jesús (author), Ferreira, Eugénio C. (author)
Formato: conferencePaper
Idioma:eng
Publicado em: 2007
Assuntos:
Texto completo:https://hdl.handle.net/1822/7121
País:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/7121
Descrição
Resumo:The purpose of this work is to design an exact fuzzy observer for a bioprocess switching between two different metabolic states. A fed-batch baker's yeast culture is modeled by two sub-models: a respiro-fermentative state with ethanol production and a respirative state with ethanol consumption. An exact fuzzy observer model using sector nonlinearity was built for both nonlinear models; the observer gains were designed using Linear Matrix Inequalities (LMI's). The observer dynamics shows a very good tracking behavior with respect of the states of the switching partial models. The observer premise variables depend on the state variables estimated by the fuzzy observer.