Abstract Dissolved oxygen (DO) is one of the important parameters in the process of microbe fermentation. In this paper,the hardware of dissolved oxygen controller and the control algorithms based on PanBoolean algebra are introduced. The controller is accurate and reliable for online detection and control of dissolved oxygen.Keywords Fermentation Dissolved oxygen Single chip computer Control Control principle The purpose of controlling dissolved oxygen is to stabilize the dissolved oxygen concentration value within a certain expected value or range. In the process of microbial fermentation, the relationship between dissolved oxygen concentration and other process parameters is extremely complex, and is affected and restricted by a variety of physical, chemical and microbiological factors in the bioreactor. Accurate real-time online measurement of these parameters is a basic prerequisite for achieving automatic control of dissolved oxygen. Abstract Dissolved oxygen (DO) is one of major parameters in the process of microbe fermentation. In this paper,the hardware of dissolved oxygen controller and the control algorithms based on PanBoolean algebra are introduced. The controller is accurate and reliable for online detection and control of dissolved oxygen.Keywords Fermentation Dissolved oxygen Single chip computer Control Control principle The purpose of controlling dissolved oxygen is to stabilize the dissolved oxygen concentration value within a certain expected value or range. In the process of microbial fermentation, the relationship between dissolved oxygen concentration and other process parameters is extremely complex, and is affected and restricted by a variety of physical, chemical and microbiological factors in the bioreactor. Accurate real-time online measurement of these parameters is a basic prerequisite for achieving automatic control of dissolved oxygen.
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