@ARTICLE{Tabiś_Bolesław_Nonlinear_2014, author={Tabiś, Bolesław and Skoneczny, Szymon and Stryjewski, Wojciech S.}, number={No 3 September}, journal={Chemical and Process Engineering}, pages={349-360}, howpublished={online}, year={2014}, publisher={Polish Academy of Sciences Committee of Chemical and Process Engineering}, abstract={The paper presents the dynamic characteristics of a continuous tank bioreactor for microbiological process, with a developed predator-prey food chain. The presence of the predator microorganism considerably influences the position and stability character of steady-states. There appears to exist a wide range of unstable steady-states and high-amplitude oscillations of state variables. Without automatic control, the system can operate only in unsteady conditions. From technological point of view, this circumstance is unfavorable. It was shown that oscillations can be removed by employing automatic control with continuous P or PI controllers. Moreover, the use of a controller with integrating element causes removal of the predator from the bioreactor. The paper discusses an application of this phenomenon for practical purposes.}, type={Artykuły / Articles}, title={Nonlinear Dynamics of a Controlled Stirred Tank Bioreactor With Predator-Prey Relationship}, URL={http://sd.czasopisma.pan.pl/Content/84980/PDF/07-paper-Tabi.pdf}, doi={10.2478/cpe-2014-0026}, keywords={predator-prey, dynamics, automatic control, steady states, bioreactor}, }