Modeling and Fuzzy Controller Design for Yeast Fermentation Bioreactor of Ethanol Production

Fuzzy controller has been used for a wide variety of chemical applications because of their ability to proper control of process. This paper presents the use of feedback fuzzy controller for temperature control of a continuous yeast fermentation bioreactor. Because of nonlinear and sluggish behavior of this process, proper control of this system is important. In this work, at the first the, process was modeled and then the analytical model of this nonlinear process was used to generate the training data for fuzzy controller. The robustness of this control structure was studied in the case of set point tracking and noise of measurement. Also, the results of fuzzy control are compared with conventional feedback control. It is shown that the servo control properties can be significantly improved by the fuzzy control strategy.

Keywords:

Bio reactor , Feedback control , Fuzzy control , nonlinear process