Title :
Expert system based dissolved oxygen control in APMP wastewater aerobic treatment process
Author :
Tang, Wei ; Feng, Qian ; Wang, Mengxiao ; Hou, Qian ; Wang, Leilei
Author_Institution :
Dept. of Pulp & papermaking Eng., Shaanxi Univ. of Sci. & Technol., Xi´´an
Abstract :
Because of such characteristics as severe non-linearity, time-delay in wastewater aerobic treatment process of alkaline peroxide mechanical pulping (APMP), no satisfied control performance can be obtained for the control of dissolved oxygen (DO) consistency by conventional control technologies such as PID (Proportional Integral Derivative). A novel control method based on expert system (ES) is proposed in this paper. The basic idea is concluded as follows: A feedforward and feedback plus PID control scheme based on expert system for DO value control is employed, by which different control rules are made according to the derivative of DO values in different stages. This control strategy has been embedded into a wastewater aerobic treatment process control system running in China and resulted in notable profits.
Keywords :
control engineering computing; delays; expert systems; oxygen; production engineering computing; three-term control; wastewater treatment; DO value control; alkaline peroxide mechanical pulping; conventional control technology; dissolved oxygen control; expert system; feedback plus PID control scheme; feedforward plus PID control scheme; time-delay; wastewater aerobic treatment process; Control systems; Expert systems; Medical control systems; Nonlinear control systems; PD control; Pi control; Proportional control; Switches; Three-term control; Wastewater treatment; APMP; Expert system; PLC system; dissolved oxygen control; wastewater aerobic treatment process;
Conference_Titel :
Automation and Logistics, 2008. ICAL 2008. IEEE International Conference on
Conference_Location :
Qingdao
Print_ISBN :
978-1-4244-2502-0
Electronic_ISBN :
978-1-4244-2503-7
DOI :
10.1109/ICAL.2008.4636355
