Robust stabilization of competing species in the chemostat. (March 2020)

• Record Type: Journal Article
• Authors: Reis de Souza, Alex; Efimov, Denis; Polyakov, Andrey; Gouzé, Jean-Luc
• Is Part Of: Journal of process control. Volume 87(2020)
• Page Start: 138
• Page End: 146
• Publication Date: 2020-03
• Subjects: Robust control -- Sliding-mode -- Chemostat -- Biological process; Process control -- Periodicals; Fabrication -- Contrôle -- Périodiques; Process control; Periodicals; Electronic journals; 660.281
• DOI: 10.1016/j.jprocont.2020.01.010
• Languages: English
• ISSNs: 0959-1524

Abstract

Highlights: Coexistence of multi-species in a continuous bioreactor can be assured by using feedback control. While coexisting, these species can be stabilized in a finite-time using sliding-mode control. By means of the proposed methodology, robustness against bounded parametric uncertanties on the kinetic rates are easily compensated. Time-varying fluctuations on the kinetic rates' parameters are shown to be easily tackled. Abstract: This work addresses the problem of robust stabilization of the concentrations of two different species of living organisms, which compete for a single limiting substrate in a bioreactor. This stabilization is performed using discontinuous feedback control laws that ensure the coexistence of all species. The control laws are designed considering bounded parametric uncertainties on the kinetic rates.