BP neural network prediction model optimization method for emission performance of diesel engine
A BP neural network and predictive model technology, applied in biological neural network models, neural learning methods, gene models, etc.
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[0074] Establishment of BP Neural Network Model
[0075] The BP neural network includes an input layer, a hidden layer and an output layer; the input layer is responsible for receiving the data sample matrix, the hidden layer is responsible for the calculation of data samples, and the output layer is responsible for outputting data. The entire BP neural network is regulated by the error value, and the weight and threshold of any layer of neurons are continuously optimized to make the optimization result within a reasonable error range. At this time, the BP neural network model can accurately predict unknown data. The flow process of the BP neural network prediction model optimization method of the diesel engine emission performance provided by the present embodiment is as follows figure 1 shown.
[0076] The modeling method of the BP neural network prediction model is:
[0077] a. Construction of BP neural network
[0078] In actual engineering, the characteristics of inpu...
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