Geodesic
Robust Feedback Control Design for a Nonlinear Wastewater Treatment Model
M. Serhani1 ; N. Raissi2 ; P. Cartigny3
1 FSJES, University My Ismail, B.P. 3102, Toulal, Meknes, Morocco
2 EIMA, FS, University Ibn Tofail, B.P. 133, Kénitra, Morocco
3 GREQAM, University la Méditerranée, 2 rue de la Charité, 13002 Marseille, France
Mathematical modelling of natural phenomena, Tome 4 (2009) no. 5, pp. 128-143.

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In this work we deal with the design of the robust feedback control of wastewater treatment system, namely the activated sludge process. This problem is formulated by a nonlinear ordinary differential system. On one hand, we develop a robust analysis when the specific growth function of the bacterium μ is not well known. On the other hand, when also the substrate concentration in the feed stream sin is unknown, we provide an observer of system and propose a design of robust feedback control in term of recycle rate, in order to keep the pollutant concentration lower than an allowed maximum level sd.
DOI : 10.1051/mmnp/20094509

M. Serhani 1 ; N. Raissi 2 ; P. Cartigny 3

1 FSJES, University My Ismail, B.P. 3102, Toulal, Meknes, Morocco
2 EIMA, FS, University Ibn Tofail, B.P. 133, Kénitra, Morocco
3 GREQAM, University la Méditerranée, 2 rue de la Charité, 13002 Marseille, France 
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M. Serhani; N. Raissi; P. Cartigny. Robust Feedback Control Design for a Nonlinear Wastewater Treatment Model. Mathematical modelling of natural phenomena, Tome 4 (2009) no. 5, pp. 128-143. doi : 10.1051/mmnp/20094509. http://geodesic.mathdoc.fr/articles/10.1051/mmnp/20094509/

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