Moisture control method and system of moisture regaining humidification process based on multiple regression

Abstract

The invention discloses a moisture control method of a moisture regaining humidification process based on multiple regression. The moisture control method of the moisture regaining humidification process based on multiple regression comprises the following steps that relevant data of a tobacco sheet of the moisture regaining humidification process are obtained, the working condition of a moistureregaining humidification device is judged, when the mouth entering moisture content, the tobacco sheet mass flow rate, the hot air temperature, the steam flow rate, the hot air opening degree, the rotation speed of a roller, and the steam pressure are in a normal working state, the moisture of the moisture regaining humidification process is controlled. Based on the moisture control method and system of the moisture regaining humidification process based on multiple regression, a mathematical model of the process is established according to the mathematical relationship between relevant variables of the moisture regaining humidification process, the multiple regression method is used for analyzing historical data of the moisture regaining humidification process, time-varying parameters inthe model are identified in real time,the water addition amount is obtained through the mathematical model of the process, the target mouth exiting moisture content of the tobacco sheet, and measuredprocess variable values, the goals of stabilizing the mouth exiting moisture content of the tobacco sheet, improving the pass rate of the tobacco sheet, and lowering the production cost of cigarettesare achieved.

Description

technical field [0001] The present invention relates to the technical field of control of the moisture resurgence and humidification process, in particular to a moisture control method and system for the rehumidification and humidification process based on multiple regression. Background technique [0002] The moisture regain and humidification process mainly includes the loose moisture regain process, the flavoring and feeding process, and the temperature increasing and humidifying process. It is an important processing procedure for moisture control in the tobacco industry. The outlet moisture content is an important technical index in the humidification process, and its process stability has a direct impact on the subsequent process index. At present, there are many problems in the control of outlet moisture content in the humidification process, the most prominent are three points: First, due to the time delay in the humidification process itself, the humidification cont...

AI Technical Summary

Problems solved by technology

At present, there are many problems in the control of outlet moisture content in the humidification process, the most prominent are three points: First, due to the time delay in the humidification process itself, the humidification control system cannot adjust the water content according to the outlet moisture content measured in real time The size, which affects the stability of the outlet moisture content

Second, because the water absorption capacity of the tobacco sheets on the silk production line is not completely consistent, even the physical properties of the same batch of tobacco sheets are different, so that the moisture control system of the moisture regain and humidification control equipment cannot be based on the mathematical model of the moisture regain and humidification process. The measured variable value can be used to obtain the optimal water addition amount at this time, which affects the stability of the outlet moisture content.

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