BioChem - DOS

Robust observation strategy to estimate the substrate concentration in the influent of a fermentative bioreactor for hydrogen production

Chemical engineering science

Torres Zuniga, I.; Vargas, A.; Latrille, E.; Buitron, G.

The observation strategy developed in this paper consists of an H<SUB>~</SUB> Luenberger observer coupled to a classical super-twisting observer. The H<SUB>~</SUB> Luenberger observer uses the biohydrogen flow rate measured at the reactor output to estimate the glucose and the biomass concentrations inside the reactor. These estimations are taken by the super-twisting observer to estimate the glucose concentration at the reactor input. First, pseudo-stoichiometric and kinetic parameters of the bioreactor model are identified. Two semi-definite optimization problems are then proposed to compute the observer gains. Results show that the biomass is a sensitive state variable. In spite of this, the glucose estimated at the reactor input correctly follows the experimental data and the estimation error remains close to zero in the complete period of time considered.

2015

Pergamon Press ; Elsevier Science Ltd

0009-2509

1873-4405

129

pp.126-134

10.1016/j.ces.2015.02.042

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART72042970

Biohydrogen production; Robust estimation; Super-twisting observer; Luenberger observer; H~ control