Hybrid modeling method for predicting key operating parameters of toilet paper machine drying part

Abstract

The invention discloses a hybrid modeling method for predicting key operating parameters of a drying part of a toilet paper machine. The method comprises the following steps: S1, acquiring historicaloperating parameters and abnormal cleaning data of the drying part of the toilet paper machine; S2, establishing a paper sheet drying mechanism model, predicting key operation parameters of the historical operation parameters in the S1 by using the mechanism model, and calculating mechanism prediction errors of the key operation parameters; S3, preprocessing the mechanism simulation error data inS1 and S2 by using a normalization method, and dividing the data into a training set and a test set according to a certain proportion; S4, establishing a mechanism prediction error compensation modelof the key operation parameters according to a BPNN algorithm principle, and using the training set data to train adjustment and optimization of the model and algorithm hyper-parameters; S5, integrating the paper sheet drying mechanism model and the mechanism prediction error compensation model, and predicting key operation parameters of the test set data. The invention solves the problem that a mechanism modeling method is low in paper sheet drying key operation parameter prediction precision.

Description

technical field [0001] The invention relates to the field of prediction of key operating parameters of a drying section of a tissue machine, in particular to a hybrid modeling method for predicting key operating parameters of the drying section of a tissue machine. Background technique [0002] In the drying process of paper sheets, a large amount of saturated steam is consumed, and the energy consumption of toilet paper drying accounts for more than 67% of the total energy consumption in the pulp and paper production process. Therefore, reducing energy consumption in the drying section is the key to reducing energy consumption in the entire papermaking process and saving production costs. However, paper drying is a complicated process of heat and mass transfer, in which solid phase, liquid phase and gas phase coexist in the whole process. influences. The complicated drying mechanism makes the papermaking enterprises not in place in the monitoring of the key operating para...

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Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention provides a hybrid modeling method for the prediction of key operating parameters of the drying section of the tissue machine, which solves the problem of low prediction accuracy of the key operating parameters of paper drying by the mechanism modeling method

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