Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Modeling and Intelligent control for Wastewater treatment process

수처리공정의 모델링과 지능제어의 적용

  • Cheon, Seong-Pyo (Department of Electrical Engineering, Pusan National University) ;
  • Kim, Bong-Chul (Department of Electrical Engineering, Pusan National University) ;
  • Kim, Sung-Shin (Department of Electrical Engineering, Pusan National University)
  • 천성표 (부산대학교 전자전기통신공학부) ;
  • 김봉철 (부산대학교 전자전기통신공학부) ;
  • 김성신 (부산대학교 전자전기통신공학부)
  • Published : 2000.07.17
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Abstract

The main motivation of this research is to develop an intelligent control strategy for Activated Sludge Process(ASP). ASP is a complex and nonlinear dynamic system because of the characteristic of a wastewater, the change of an influent flow rate, weather conditions, and etc. The mathematical model of ASP also includes uncertainties which are ignored or not considered by process engineer or controller designer. The ASP is generally controlled by a PID controller that consists of fixed proportional, integral, and derivative gain values. The PID gains can be adjusted by the expert in the ASP. The ASP model based on Matlab$^{(R)}$5.3/Simulink$^{(R)}$3.0 is developed in this paper. Various control methods are applied to the ASP model and the control results are disscussed. Three control methods are designed and tested: conventional PID controller, fuzzy logic control approach to modify setpoints, and fuzzy-PID control method.

Keywords