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Fig. 6 | Biotechnology for Biofuels

Fig. 6

From: Promoting the co-utilisation of glucose and xylose in lignocellulosic ethanol fermentations using a data-driven feed-back controller

Fig. 6

Control schemes of the regulatory layers used in fed-batch fermentations 3 and 4. Firstly, a partial least squares model (PLS) is used to calculate the process variable (PV) of the glucose concentration. Secondly, the PV is manipulated depending on the pre-defined set-point (SP) and the upper and lower boundaries. The integral term (\(Ki\)) of the proportional, integral (PI) controller is also manipulated depending on the PV, while the proportional term (\(Kp\)) is kept constant. The manipulated variable (MV), resulting from the PI controller, is sent to the actuator (controlled pump). The control schemes for the fed-batch fermentations 1 and 2 are shown in Additional file 1

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Biotechnology for Biofuels and Bioproducts

ISSN: 2731-3654

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