Parameter self-optimization tobacco machine steam heating control model and construction method thereof

Abstract

The invention discloses a parameter self-optimization tobacco machine steam heating control model and a construction method thereof. The built parameter self-optimization tobacco machine steam heating control model comprises a preheating stage control unit used for controlling the opening degree of a film steam valve in the preheating stage of a tobacco machine, a production stage control unit used for controlling the opening degree of the film steam valve in the production stage, an other-stage control unit used for controlling the opening degree of the film steam valve in stages other than the preheating stage and the production stage, and an optimal valve opening degree value searching unit. According to the optimal valve opening degree value searching unit, in the production stage, when an algorithm for searching the optimal valve opening degree value in real time is started, and the central value of the film valve is updated in real time according to the outlet material temperature, the temperature threshold and the duration. According to different production states, heating temperature intervals and production processes, control parameters are continuously and automatically optimized and refined, and automatic control over steam heating of a tobacco machine is achieved.

Description

technical field [0001] The invention belongs to the field of heating control of cylinder type moisture regaining equipment, and in particular relates to a parameter self-optimizing steam heating control model of a cigarette machine and a construction method thereof. Background technique [0002] Tobacco shredded process cylinder-type rehydration equipment includes silk thread blade loosening and rehydration machine, leaf moistening and rehydration before shredding machine and stalk wire scraper steamer, etc. The main process steam of the drum type rehydration equipment is mainly used to increase the temperature of materials and resurgence. On the steam pipeline, the amount of steam entering the equipment is mainly controlled by changing the opening of the main process steam film valve, so as to realize the automatic control of the material heating process. [0003] With the improvement of the intelligence of tobacco equipment, the production capacity of the new generation o...

AI Technical Summary

Problems solved by technology

However, when this model is used in practice, it cannot deal with a relatively special situation, that is, when the steam pipeline has a large physical change (such as changes in the temperature and humidity of the production environment during the season change, steam valve calibration or replacement, or steam Air source equipment and pipelines have been overhauled and adjusted, etc.)

The solidified membrane valve center value in this technical solution is no longer applicable to the new pipeline environment, and the optimal membrane valve center value cannot be found through previous historical data, so it can only be tentatively determined by manual experience in the production process Modify the central value of the membrane valve to find the optimal central value of the membrane valve

This method of manually finding the optimal membrane valve center value will not only result in low quality of production materials, but also take a long time, resulting in unstable production

[0005] Therefore, there is a need for a control model that can cope with the relatively large physical changes in the above-mentioned special steam pipeline and still produce relatively stable, and it is necessary to have the function of continuously and automatically optimizing the central value of the membrane valve according to the production process—that is, real-time search The optimal parameter function, not just the patent application with the application publication number CN109549241A, which only has the function of finding the optimal parameter for historical data

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