Model-based identification and control on baker's yeast fed-batch fermentation

A theoretical and experimental study is reported concerning the control of baker's yeast fed-batch fermentation. The overall approach follows the methodology proposed by Bastin & Dochain (1990) which exploits the structure of a general nonlinear deterministic model for bioreactors. Software-sensors have been developed and employed for the on-line estimation of 'non-measured' state variables (Feyo de Azevedo et al., 1992). An adaptive linearizing control scheme, based as well on the general model structure, utilises the observed state to compute the control action.