An adaptive control scheme is developed for the optimization of a fed-
batch ethanol production process. The fermentation process is modeled
by an hybrid neural model combining mass balance equations and neural
networks, used to represent the kinetic rates. The networks used, the
functional link networks (FLN), allow the Linear estimation of their p
arameters; this enables the re-estimation of the parameters at each sa
mpling time, and thus the development of an adaptive optimal control s
cheme.