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Control of Dissolved Oxygen in Stirred Bioreactors

In English

Författare

Summary, in English

This report discusses control of dissolved oxygen in a bioreactor where the oxygen supply is manipulated using the stirrer speed. In batch and fed-batch cultivations the operating conditions change significantly which may cause tuning problems. Analysis using a linearized process model shows that the process dynamics is mainly affected by changes in the volumetric oxygen transfer coefficient $K_La$. % To account for the process variations, a control strategy based on PID control and gain scheduling from the stirrer speed is suggested. This approach is straightforward to implement in an industrial control system. Experimental results from a laboratory reactor are presented.

Publiceringsår

1998

Språk

Engelska

Publikation/Tidskrift/Serie

Technical Reports TFRT-7571

Dokumenttyp

Rapport

Förlag

Department of Automatic Control, Lund Institute of Technology (LTH)

Ämne

  • Control Engineering

Nyckelord

  • Feedback control
  • dissolved oxygen
  • stirrer speed
  • bioreactor
  • gain scheduling.

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0280-5316