Observer-based trajectory tracking for anaerobic digestion process

Khadidja Chaib Draa (1) , Holger Voos (1) , Marouane Alma (2) , Ali Zemouche (3, 2) , Mohamed Darouach (2)

1 SnT - Interdisciplinary Centre for Security, Reliability and Trust [Luxembourg]
2 CRAN - Centre de Recherche en Automatique de Nancy
3 DISCO - Dynamical Interconnected Systems in COmplex Environments

A novel control strategy is proposed for the Anaerobic digestion (AD) process to track a reference trajectory. This is motivated by the aim to control the produced biogas quality and quantity. The control scheme is composed from an exponential nonlinear observer which remedies for the lack of measurements and a feedback control which accounts for all the process dynamics. By using the LPV techniques, the Lyapunov analysis and the well-known Barbalat's lemma, global stability conditions are synthesized in the form of Linear Matrix Inequalities (LMIs). The feasibility of the obtained LMIs is enhanced due to the introduction of a non diagonal multiplier matrix coming from a convenient use of Young's inequality. Finally, the simulation results are provided to validate the effectiveness of the proposed control strategy in this note.

Mots clés: Reference trajectory tracking; Observer Design; Anaerobic digestion; LMI approach

Domaines: Automatique; Sciences de l'ingénieur [physics]

Khadidja Chaib Draa, Holger Voos, Marouane Alma, Ali Zemouche, Mohamed Darouach. Observer-based trajectory tracking for anaerobic digestion process. 14th International Workshop on Advanced Control and Diagnosis, ACD 2017, Nov 2017, Bucarest, Romania. pp.1-6. ⟨hal-01683627⟩