An asymptotic observer for batch processes with single biogas measurement

D. Dochain (1) , Alain Rapaport (2)

1 ICTEAM - Institute of Information and Communication Technologies, Electronics and Applied Mathematics
2 MISTEA - Mathématiques, Informatique et STatistique pour l'Environnement et l'Agronomie

In this paper we propose an observer for an example of systems for which the boundary of its domain is unobservable, and all trajectories converge to this boundary. The proposed case study, a bioreactor in batch operating conditions with one simple microbial growth reaction and gas production is standard and largely encountered in practical situations. Comparison of the proposed observer with a classical Luenberger observer has been performed: it shows that this later does not guarantee a convergence with no estimation error.

Mots clés: biological systems; observability; State observer; biosystem

Domaines: Systèmes et contrôle [cs.SY]; Biotechnologies

D. Dochain, Alain Rapaport. An asymptotic observer for batch processes with single biogas measurement. 2nd IFAC Conference on Modelling, Identification and Control of Nonlinear Systems (MICNON 2018), Jun 2018, Guadalajara, Mexico. pp.420-424, ⟨10.1016/j.ifacol.2018.07.315⟩. ⟨hal-01826938⟩