Title :
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
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;
Conference_Titel :
Systems, Man, and Cybernetics, 2001 IEEE International Conference on
Conference_Location :
Tucson, AZ
Print_ISBN :
0-7803-7087-2
DOI :
10.1109/ICSMC.2001.972026
