| Title |
Simple gain-scheduled control system for dissolved oxygen control in bioreactors |
| Authors |
Butkus, Mantas ; Levišauskas, Donatas ; Galvanauskas, Vytautas |
| DOI |
10.3390/pr9091493 |
| Full Text |
|
| Is Part of |
Processes.. Basel : MDPI. 2021, vol. 99, iss. 9, art. no. 1493, p. 1-12.. ISSN 2227-9717 |
| Keywords [eng] |
PID (PI) control ; gain-scheduling ; mathematical model ; biotechnological cultivation process ; dissolved oxygen concentration |
| Abstract [eng] |
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. |
| Published |
Basel : MDPI |
| Type |
Journal article |
| Language |
English |
| Publication date |
2021 |
| CC license |
|
