A data prediction method based on improved pso‑bp neural network
A BP neural network, PSO-BP technology, applied in the direction of biological neural network model, etc., can solve the problem of inability to take into account reliability and hardware cost, and achieve the effect of easy implementation, scientific and reasonable results, and improved accuracy
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[0080] Example: Taking the temperature data prediction of the upper guide bearing of a water turbine as an example to illustrate, the data prediction method based on the improved PSO-BP neural network includes the following process:
[0081] 1), BP neural network model construction
[0082] In this patent, taking the prediction of the temperature data of the upper guide bearing of the water turbine as an example, according to the characteristics of the data, it is determined to use 4 consecutive data collected by the sensor to predict the next data to be collected, so the number of input layer nodes of the neural network model is determined to be 4 , and the number of output layer nodes is 1. According to the design concept of this patent, one layer is used to determine the number of hidden layers of the BP neural network. Use formula (1) to determine the selection of hidden layer nodes.
[0083]
[0084] In the formula: n is the number of nodes in the input layer, q is t...
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