By Topic

Fuzzy modeling of an activated sludge process

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Shimakawa, M. ; Dept. of Electr., Electron. & Comput. Eng., Kyushu Inst. of Technol., Kitakyushu, Japan ; Murakami, S. ; Mori, M.

The activated sludge process is a wastewater treatment technique used at sewage disposal plants. The process should be controlled so that the BOD value of an effluent satisfies a certain criterion. The paper deals with a fuzzy modeling for the activated sludge process. The output of the fuzzy model is the BOD value. Our proposed fuzzy inference method is applied to the fuzzy model. Since the inferred conclusion using the proposed method has a membership function of simple shape, its meaning can be interpreted easily. Moreover, it can also be considered as a possibility distribution. In addition, its linguistic meaning is interpretable by means of labeling of the membership function with its linguistic term. Since the fuzzy rules of the model consist of labeled fuzzy sets in an antecedent part and also a consequent part, the input-output relation of the process becomes able to be easily understood. The operator can predict a possibility distribution of a future BOD value by simulation with the model, and can take appropriate judgement and control based on the prediction. In the paper, from the modeling result, the effectiveness of the proposed method and the fuzzy model are shown

Published in:

Systems, Man, and Cybernetics, 1999. IEEE SMC '99 Conference Proceedings. 1999 IEEE International Conference on  (Volume:2 )

Date of Conference: