Cut tobacco dryer outlet moisture content prediction model generation and regulation and control method based on cut tobacco dryer outlet moisture content prediction model generation

Abstract

The invention discloses a cut tobacco dryer outlet moisture content prediction model generation method and a regulation and control method based on the cut tobacco dryer outlet moisture content prediction model, and the generation method comprises the steps: obtaining initial data of a cut tobacco production process in a preset time period; cleaning the initial data, performing normalization processing on the cleaned initial data, and dividing to generate training sample data and test data; an initial prediction model of the moisture content of the outlet of the cut-tobacco dryer is constructed and generated; inputting test data into the initial prediction model, and calculating and generating training accuracy and an average error; and when the training accuracy is in accordance with a first threshold range and the average error is in accordance with a second threshold range, updating the initial prediction model as a cut-tobacco dryer outlet moisture content target prediction model. According to the method and the device, the initial data in the preset time period and the target GBDT algorithm are combined, so that the target prediction model with more accurate output signals can be obtained, the instability and the volatility of moisture in the tobacco shred production process are reduced, and the tobacco shred quality is improved.

Description

technical field [0001] The invention relates to the technical field of shredded production in the tobacco industry, in particular to the generation of a prediction model of moisture content at the outlet of a shred dryer and a control method based on it. Background technique [0002] For the silk production line with complex process and very long process, there are many kinds of procedures and equipment. In this process, the shred drying process is very important. It heats and dries shredded tobacco to meet moisture requirements, improve the filling capacity of shredded tobacco, and control the quality of shredded tobacco. The production situation and process quality of shredded tobacco in the shredded drying process have a great influence on the overall comprehensive quality of shredded tobacco, so the outlet moisture content of the shredded shredded drying process has become an important technological index. [0003] There are many influencing factors and interference fac...

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a generation of a prediction model of moisture content at the outlet of a shred dryer and a control method based on it, so as to solve the problem in the related art that the generated model has a certain hysteresis, which leads to a decrease in the quality of the shredded tobacco.

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