Journal
JOURNAL OF BIOTECHNOLOGY
Volume 103, Issue 3, Pages 237-248Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0168-1656(03)00121-4
Keywords
bioreactor monitoring; fermentation control; knowledge-based expert system; multi-analyzers
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A computer system solution for integration of a distributed bioreactor monitoring and control instrumentation on the laboratory scale is described. Bioreactors equipped with on-line analyzers for mass spectrometry, near-infrared spectroscopy, electrochemical probes and multi-array gas sensors and their respective software were networked through a real-time expert systems platform. The system allowed data transmission of more than 1800 different signals from the instrumentation, including signals from gas sensors, electrodes, spectrometer detectors, balances, flowmeters, etc., and were used for processing and carrying out a number of computational tasks such as partial least-square regression, principal component analysis, artificial neural network modelling, heuristic decision-making and adaptive control. The system was demonstrated on different cultivation s/fermentations which illustrated sensor fusion control, multivariate statistical process monitoring, adaptive glucose control and adaptive multivariate control. The performance of these examples showed high operational stability and reliable function and meet typical requirements for production safety and quality. (C) 2003 Elsevier B.V. All rights reserved.
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