ADAPTIVE-CONTROL OF DISSOLVED-OXYGEN CONCENTRATION IN A BIOREACTOR

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A new adaptive DO (dissolved oxygen) concentration control algorithm considering DO electrode dynamics with response time delay has been developed. A system model with two time-varying parameters was used to relate the DO concentration with two control variables: air flow rate and agitation speed. Parameters of this model were estimated on-line using a regularized constant trace recursive least-squares method. An extended Kalman filter was used to remove the effect of noises from the DO concentration measurements and thus to improve control performance. A discrete one-step ahead control scheme was adopted to determine control actions based on the parameter estimation results. Experimental results showed that the new adaptive DO concentration control algorithm performed better than other algorithms tested, a PID controller and adaptive algorithms without the DO electrode dynamics.
Publisher
JOHN WILEY SONS INC
Issue Date
1991-03
Language
English
Article Type
Article
Keywords

CULTURE; GROWTH

Citation

BIOTECHNOLOGY AND BIOENGINEERING, v.37, no.7, pp.597 - 607

ISSN
0006-3592
URI
http://hdl.handle.net/10203/67038
Appears in Collection
CBE-Journal Papers(저널논문)
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