Water adding and dispersing regulating method for smoked sheet damping machine of high-inertia system

Abstract

The invention discloses a water adding and dispersing regulating method for a smoked sheet damping machine of a high-inertia system. The method comprises the steps of: 1, adding water in advance to estimate, i.e. performing water adding control on tobacco leaves at the first blanking according to a water adding estimation function through a system, and detecting whether the tobacco leaves are output from a tobacco leaf damping barrel or not, so as to judge the first blanking is finished or not; 2, discrete sampling: after entering a normal production state, sampling water from an outlet at fixed time, and recording the sampling value F(t) of the water from the outlet every 10 seconds; and 3, trend comparing and regulating: during sampling, comparing a current water value x with the recorded sampling value F(t) of the water from the outlet in real time, and thus determining the changing trend of the current water. After the method is adopted, the system can obtain certain foreseeability on water variation according to the changing trend of the current water, so that the adjustment sensitivity of the system is increased, a continuous oscillating outlet water condition which is caused by a traditional regulating method is effective reduced, and the high inertia and large hysteresis quality of the system can be overcome to a certain degree.

Description

technical field [0001] The invention relates to the field of automatic control of tobacco processing equipment, and is a discrete control method suitable for a control system with large disturbance and large inertia link, in particular, a water-adding discrete adjustment method for a tobacco sheet moistening machine. Background technique [0002] With the continuous improvement of the automation control degree of the tobacco production line, the control indicators of the production equipment are becoming more and more strict. The tobacco sheet moisture rejuvenation machine is the second key process point of the silk production line after the slicing machine. Its function is to add water and steam to the sliced ​​flue-cured tobacco block to realize the loosening, heating and moisture regain of the material. Among them, the moisture regain The final material moisture value is the most critical process index. The main principle of the water adding system of the damp conditione...

AI Technical Summary

Problems solved by technology

However, the water adding system of the moisture regainer is a system with large inertia, slow response speed and many interference factors. The entire response time from changing the water addition amount to the change of the outlet material moisture is as long as 5 to 7 minutes

Therefore, the traditional negative feedback control method makes the system continuously oscillate for a long time, and the outlet moisture cannot be stabilized.

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