The Research for Dissolved Oxygen Experts Fuzzy Control System in Sewage Treatment

Author

Yang Ping ; Zhao De-an ; Lian Xian-Guo

Author_Institution

Sch. of Electr. & Inf. Eng., Jiangsu Univ., Zhenjiang, China

Volume

3

fYear

2009

fDate

25-27 Dec. 2009

Firstpage

359

Lastpage

362

Abstract

The stable control of dissolved oxygen in biological wastewater treatment system is a typical large inertia, the longer lag time and a certain degree of uncertainty in the system. This paper analyzes the process of CAST wastewater treatment technology and establishes a model of dissolved oxygen control. The article analyses the underlying causes in instable control system by step response curve of conventional PID closed-loop system, and gives the design method of experts fuzzy control system. The article also gives the control system simulations under the step signal and the interference signal, and gives the robustness of the system simulation testing. Experts fuzzy control system in biological wastewater treatment has obvious advantages.

Keywords

chemical variables control; closed loop systems; fuzzy control; sewage treatment; three-term control; wastewater treatment; CAST wastewater treatment technology; PID closed loop system; biological wastewater treatment system; dissolved oxygen experts fuzzy control system; sewage treatment; step response curve; system simulation testing; Biological control systems; Biological system modeling; Control system analysis; Control systems; Fuzzy control; Oxygen; Sewage treatment; Three-term control; Uncertainty; Wastewater treatment; Sewage treatment; dissolved oxygen control; experts fuzzy control; simulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Science-Technology and Applications, 2009. IFCSTA '09. International Forum on

Conference_Location

Chongqing

Print_ISBN

978-0-7695-3930-0

Electronic_ISBN

978-1-4244-5423-5

Type

conf

DOI

10.1109/IFCSTA.2009.326

Filename

5384876