Title :
Robust interval-based SISO and SIMO regulation for a class of highly uncertain bioreactors: application to the anaerobic digestion
Author :
Alcaraz-Gonzalez, V. ; Maloum, A. ; Harmand, J. ; Rapaport, Alain ; Steyer, J.P. ; Gonzalez-Alvarez, V. ; Pelayo-Ortiz
Author_Institution :
INRA-LBE, Narbonne, France
Abstract :
A robust set-valued regulation law is proposed for the stabilization of an anaerobic digester for the treatment of wastewater. This process exhibits a highly nonlinear dynamic behavior. In addition, it must operate in an uncertain environment with the presence of unknown inputs. Supporting some structural and operational conditions, this regulation law exponentially stabilizes the two most important variables in the anaerobic digester: the chemical oxygen demand concentration and the volatile fatty acids concentration around a desirable steady state in the presence of kinetic uncertainties and input disturbances. Simulations are carried out handling operational conditions close to those used in a real plant
Keywords :
biotechnology; chemical variables control; multivariable control systems; nonlinear control systems; nonlinear dynamical systems; observers; process control; robust control; uncertain systems; water treatment; anaerobic digestion; chemical oxygen demand concentration; exponential stabilization; highly nonlinear dynamic behavior; highly uncertain bioreactors; input disturbances; kinetic uncertainties; operational conditions; robust interval-based SIMO regulation; robust interval-based SISO regulation; robust set-valued regulation law; structural conditions; uncertain environment; volatile fatty acids concentration; Bioreactors; Chemicals; Kinetic theory; Lyapunov method; Oxygen; Robust control; Robustness; Steady-state; Vectors; Wastewater treatment;
Conference_Titel :
Decision and Control, 2000. Proceedings of the 39th IEEE Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6638-7
DOI :
10.1109/CDC.2001.914625
