On-Line Tendency Control of Dissolved Oxygen Concentration during Aerobic Fed-Batch Fermentations
Source abstract
Abstract
In this paper, an on-line control strategy that aims to guarantee the maintenance of a minimum dissolved oxygen (DO) concentration during aerobic fed-batch fermentations is proposed. It is a difficult task to maintain the DO concentration, especially during fed-batch fermentation, due to strongly nonlinear, variable conditions and probe dynamics. The algorithm uses information contained in the slope of the profile of the DO, as this evolves in a timely way to adapt to process variations. Moving window technology was used to track the DO tendency variation. This method was tested in Corynebacterium glutamicum and Pichia pastoris fermentations. The performance of tendency control was compared with that of manual control. The experimental results clearly show that the on-line tendency control of DO is effective and can also reduce the frequency of activity of the controller as well as the manpower burden.
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Research context
OpenAlex topics: Advanced Control Systems Optimization · Microbial Metabolic Engineering and Bioproduction · Viral Infectious Diseases and Gene Expression in Insects
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Advanced Process Control for Light Industry (Ministry of Education), Jiangnan University, Wuxi 214122, China
Faculty of Automation, Huaiyin Institute of Technology, Huaian 223003, China
Funding
National Natural Science Foundation of China
References (27)
Show source-provided references
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