期刊
JOURNAL OF INTELLIGENT & FUZZY SYSTEMS
卷 30, 期 6, 页码 3411-3422出版社
IOS PRESS
DOI: 10.3233/IFS-152088
关键词
Dissolved oxygen; self-organizing fuzzy control; fuzzy neural network; wastewater treatment process
资金
- National Science Foundation of China [61533002, 61225016, 61203099]
- Beijing Municipal Natural Science Foundation [4122006]
- Ph.D. Program Foundation from the Ministry of Chinese Education [20121103120020]
In order to improve the accuracy and adaptive ability of dissolved oxygen concentration control in the wastewater treatment process (WWTP), a self-organizing fuzzy control (SOFC) method is developed in this paper. The main feature of this control system is that the fuzzy controller can extract fuzzy rules automatically using a self-organizing fuzzy neural network (FNN), which can adjust the network structure during the process based on the growing-pruning-combining algorithm. Furthermore, to ensure the convergence of the system, a compensation controller is designed to dispel the FNN approximation error, and the parameter compensation is also considered while adjusting the network structure. Finally, simulation results, based on the international benchmark simulation model No. 1 (BSM1), demonstrate that the proposed method can achieve better control performance and superior adaptive ability compared with PID, model predictive control and conventional fuzzy logic controller.
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