Hierarchical fuzzy control for a wastewater anaerobic treatment plant

Author

Sanchez, Edgar N. ; Beteau, Jean F. ; Carlos-Hernandez, Salvador

Author_Institution

CINVESTAV, Unidad Guadalajara, Spain

Volume

5

fYear

2001

fDate

2001

Firstpage

3285

Abstract

A hierarchical fuzzy control for a wastewater treatment anaerobic plant is presented. On the basis of a previously developed integrated control, which switches two controllers, two new variables are considered (COJ/X₂ and ΔQCH₄); next, the two controllers are transformed to fuzzy proportional-integral (PI) variables; and finally, Takagi-Sugeno fuzzy supervisor is developed in order to smooth the switching. Hence, a hierarchical fuzzy control structure is built: the low level is constituted by the fuzzy PI and the higher one by the fuzzy supervisor. This new strategy allows an increase in methane production. Applicability of the proposed structure is illustrated via simulations

Keywords

chemical technology; fuzzy control; hierarchical systems; intelligent control; two-term control; waste disposal; water treatment; ΔQCH₄; COJ/X₂; Takagi-Sugeno fuzzy supervisor; fuzzy PI; fuzzy proportional-integral variables; fuzzy supervisor; hierarchical fuzzy control; integrated control; methane production; supervisory control; wastewater anaerobic treatment plant; Biomass; Carbon dioxide; Centralized control; Degradation; Fuzzy control; Mathematical model; Microorganisms; Pi control; Production; Wastewater treatment;

fLanguage

English

Publisher

ieee

Conference_Titel

Systems, Man, and Cybernetics, 2001 IEEE International Conference on

Conference_Location

Tucson, AZ

ISSN

1062-922X

Print_ISBN

0-7803-7087-2

Type

conf

DOI

10.1109/ICSMC.2001.972026

Filename

972026