Fig 1.
The model of WWTP.
Fig 2.
ISRWNNs control for WWTP.
Fig 3.
The structure of kth ISRWNN.
Table 1.
The control process of WWTP.
Fig 4.
The number of wavelet nodes of DO controller.
Fig 5.
The number of wavelet nodes of NO controller.
Fig 6.
The value of under two conditions.
Fig 7.
The value of under two conditions.
(a) Control results of DO and NO concentration. (b) Control errors of DO and NO concentration.
Fig 8.
Control results under rainy condition during set-point fixed.
(a) Control results of DO and NO concentration. (b) Control errors of DO and NO concentration.
Fig 9.
Control results under rainstorm condition during set-point fixed.
Table 2.
Comparison of different control methods for fixed set-point.
Fig 10.
The number of wavelet nodes of DO controller.
Fig 11.
The number of wavelet nodes of NO controller.
Fig 12.
The value of under two conditions.
Fig 13.
The value of under two conditions.
(a) Control results of DO and NO concentration. (a) Control errors of DO and NO concentration.
Fig 14.
Control results under rainy condition during set-point changed.
(a) Control results of DO and NO concentration. (a) Control errors of DO and NO concentration.
Fig 15.
Control results under rainstorm condition during set-point changed.
Table 3.
Comparison of different control methods for changed set-point.