Nonlinear regulation for a continuous bioreactor via a numerical uncertainty observer

A robust adaptive control strategy for a class of continuous-flow bioreactor process where the intrinsic reaction rates are poorly know is provided. A numerical observer is used to obtain on-line discrete estimates of the main uncertainties (kinetics term, yield production, and biomass concentration...

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Bibliographic Details
Published in:Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 1998-03, Vol.69 (2), p.105-110
Main Authors: Gonzalez, J., Aguilar, R., Alvarez-Ramirez, J., Barren, M.A.
Format: Article
Language:English
Subjects:
Adaptive control systems
Biological and medical sciences
Biomass
Bioreactors
Biotechnology
Closed loop control systems
Computer simulation
Continuous bioreactcr
Feedback control
Fundamental and applied biological sciences. Psychology
Kinetics
Linearization
Methods. Procedures. Technologies
Nonlinear control systems
Nonlinear regulation
Numerical analysis
Reaction kinetics
Robustness (control systems)
Various methods and equipments
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Summary:A robust adaptive control strategy for a class of continuous-flow bioreactor process where the intrinsic reaction rates are poorly know is provided. A numerical observer is used to obtain on-line discrete estimates of the main uncertainties (kinetics term, yield production, and biomass concentration) of a continuous bioreactor. With this estimate, a linearizing feedback control law is obtained which provides robust regulation against uncertainties, disturbances and additive noise on the substrate concentration measurements. The performance of the closedloop system is illustrated via numerical simulations.
ISSN:1385-8947
1873-3212
DOI:10.1016/S1385-8947(97)00122-8