Exact fuzzy observer for a baker’s yeast fermentation process

摘要

The purpose of this work is to design an exact fuzzy observer for a bioprocessswitching between two different metabolic states. A continuous baker’s yeast culture isdivided in two sub-models: a respiro fermentative with ethanol production and arespirative with ethanol consumption. An exact fuzzy observer model using sectornonlinearity was built for both nonlinear models; the observer gains were designed using Linear Matrix Inequalities (LMI’s). The observer premise variables depend on the state variables estimated by the fuzzy observer.