期刊
PROCESSES
卷 9, 期 9, 页码 -出版社
MDPI
DOI: 10.3390/pr9091493
关键词
PID (PI) control; gain-scheduling; mathematical model; biotechnological cultivation process; dissolved oxygen concentration
资金
- European Regional Development Fund [01.2.2-LMT-K-718]
An adaptive control system is proposed for set-point control and disturbance rejection of biotechnological-process parameters. Using a gain scheduling algorithm, PID (PI) controller parameters are adjusted based on input/output signals, showing robust behavior and outperforming conventional controllers in simulation experiments.
An adaptive control system for the set-point control and disturbance rejection of biotechnological-process parameters is presented. The gain scheduling of PID (PI) controller parameters is based on only controller input/output signals and does not require additional measurement of process variables for controller-parameter adaptation. Realization of the proposed system does not depend on the instrumentation-level of the bioreactor and is, therefore, attractive for practical application. A simple gain-scheduling algorithm is developed, using tendency models of the controlled process. Dissolved oxygen concentration was controlled using the developed control system. The biotechnological process was simulated in fed-batch operating mode, under extreme operating conditions (the oxygen uptake-rate's rapidly and widely varying, feeding and aeration rate disturbances). In the simulation experiments, the gain-scheduled controller demonstrated robust behavior and outperformed the compared conventional PI controller with fixed parameters.
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