Separating Two Species of Microalgae in Photobioreactors in Minimal Time - Inria - Institut national de recherche en sciences et technologies du numérique Access content directly
Journal Articles Journal of Process Control Year : 2020

Separating Two Species of Microalgae in Photobioreactors in Minimal Time

Abstract

This paper proposes a strategy to separate two strains of microalgae in minimal time. The control is the dilution rate of the continuous photobioreactor. The microalgae dynamics is described by the Droop's model, taking into account the internal quota storage of the cells. Using Pontryagin's principle, we develop a dilution-based control strategy that leads to the most ecient species separation in minimal time. A numerical optimal synthesis based on direct methods is performed throughout the paper, in order to determine the structure of the optimal feedback-control law, which is bang-singular. Our numerical study reveals that singular arcs play a key role in the optimization problem since they allow the optimal solution to be close to an associated static optimal control problem. A resulting turnpike-like behavior, which characterizes the optimal solution, is highlighted throughout this work.
Fichier principal
Vignette du fichier
papierJPC2020.pdf (1.38 Mo) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-03148717 , version 1 (22-02-2021)

Identifiers

Cite

Walid Djema, Olivier Bernard, Laetitia Giraldi. Separating Two Species of Microalgae in Photobioreactors in Minimal Time. Journal of Process Control, 2020, 87, pp.120-129. ⟨10.1016/j.jprocont.2020.01.003⟩. ⟨hal-03148717⟩
194 View
156 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More