LI Wenjing, LI Meng, QIAO Junfei. Effluent BOD soft measurement based on mutual information and self-organizing RBF neural network[J]. CIESC Journal, 2019, 70(2): 687-695
LI Wenjing, LI Meng, QIAO Junfei. Effluent BOD soft measurement based on mutual information and self-organizing RBF neural network[J]. CIESC Journal, 2019, 70(2): 687-695DOI: 10.11949/j.issn.0438-1157.20181362.
Effluent BOD soft measurement based on mutual information and self-organizing RBF neural network
It is difficult to achieve real-time accurate measurement for effluent biochemical oxygen demand (BOD). To solve this problem
a soft-measurement method based on mutual information and a self-organizing RBF neural network is proposed for BOD prediction in this paper. First
a method based on mutual information is employed to extract feature variables
and these variables are used as inputs to the soft-measurement model. Second
a self-organizing radial basis function (RBF) neural network based on error-correction method and sensitivity analysis is designed
and the improved Levenberg-Marquardt (LM) algorithm is used to train parameters of the neural network to shorten its training time. Finally
the soft-measurement model is applied to UCI public datasets and the real wastewater treatment process. The results show that the soft-measurement model has a more compact structure and relatively short training time
and improves the prediction accuracy
which realizes a fast and accurate prediction for BOD.
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