%0 Journal Article %@ 0951208X %A Patnaik, P R %D 1999 %F open:813 %I http://www.springerlink.com/content/v03u6m3471339374/ %J Biotechnology Techniques %K fermentation noise, �-galactosidase, neural control, neural filter %N 11 %P 735-738 %T Coupling of a neural filter and a neural controller for improve-ment of fermentation performance %U http://crdd.osdd.net/open/813/ %V 13 %X The noise associated with fermentation processes is normally minimised by a filtering technique. However, sometimes the noise may be beneficial if it is properly regulated. For recombinant �-galactosidase production in a fed-batch fermentation subject to Gaussian disturbances, it is shown that a neural network trained to act as a noise filter can allow disturbances of only a particular variance which maximizes �-galactosidase synthesis. By coupling such a filter with a neural controller, the productivity may be enhanced beyond what is possible with static filtering and either proportional-integral-derivative or neural control. %Z Copyright of this article belongs to Springer Science.