CN115381128B - Control method for outlet moisture of tobacco leaf roller equipment and readable storage medium thereof - Google Patents
Control method for outlet moisture of tobacco leaf roller equipment and readable storage medium thereof Download PDFInfo
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- CN115381128B CN115381128B CN202211032582.2A CN202211032582A CN115381128B CN 115381128 B CN115381128 B CN 115381128B CN 202211032582 A CN202211032582 A CN 202211032582A CN 115381128 B CN115381128 B CN 115381128B
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B9/00—Control of the moisture content of tobacco products, e.g. cigars, cigarettes, pipe tobacco
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/04—Humidifying or drying tobacco bunches or cut tobacco
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/10—Roasting or cooling tobacco
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Abstract
The invention discloses a control method of outlet moisture of tobacco leaf roller equipment and a readable storage medium thereof, wherein the method comprises the following steps: step 1, obtaining historical outlet moisture values of a plurality of groups of tobacco leaf roller equipment; step 2, counting and calculating the historical outlet water content value to obtain an initial water adding number K 0 The method comprises the steps of carrying out a first treatment on the surface of the Step 3, correcting the initial water adding number K according to the real-time value of the outlet water in the production process or the outlet water value after the outlet water in the production process is delayed for a certain time 0 Obtaining a corrected water adding number K; step 4, calculating the water adding quantity value F of the tobacco leaf roller equipment based on the corrected water adding coefficient K Is provided with According to the water adding value F of the tobacco leaf roller equipment Is provided with And carrying out on-line adjustment on the water adding amount of the tobacco leaf roller equipment. The invention can realize that the moisture at the outlet of the equipment reaches the actual set value rapidly in the stub bar stage, and the response speed of the moisture at the outlet is regulated in real time in the production process, so that the deviation value is small.
Description
Technical Field
The invention relates to a control method and a readable storage medium thereof, in particular to a control method for outlet moisture of tobacco leaf roller equipment and a readable storage medium thereof, which are mainly used for controlling the outlet moisture of the tobacco leaf roller equipment and belong to the technical field of tobacco processing.
Background
Generally, in the tobacco industry processing field, tube-type equipment such as a conditioning tube on a wire making line, a feeder, a leaf moistening tube on a redrying line, and the like. At present, the water content of tobacco leaves at the outlet is controlled by mainly adding water to tobacco leaves in the roller through a water adding nozzle, wherein the water adding nozzle is mainly arranged at the inlet position of the roller, the water adding nozzle is arranged at the outlet position of the roller, or one water adding nozzle is respectively arranged at the inlet and outlet positions of the roller.
The control of the water adding amount is mainly completed by the actions of a feedforward control and a feedback control colleague, and the feedback control basically adopts a traditional PID algorithm.
Control has been a difficulty for three main reasons: 1. the interference factors are more, such as the influence of ambient temperature and humidity, hot air temperature, the number of revolutions of a roller, the moisture of inlet tobacco leaves, the flow rate of the inlet tobacco leaves, the quality of the inlet tobacco leaves, a water atomization nozzle and the like on the moisture content of the tobacco leaves at the outlet of the equipment. 2. The intrinsic characteristics of tobacco leaves are different, the water absorption characteristics of tobacco leaves at different producing areas and different positions on the same tobacco rod are different, and the water absorption characteristics of tobacco leaves at different temperatures are also different. 3. The hysteresis is larger, such as a leaf wetting cylinder on a redrying line, and the reaction time of the execution amount (water adding spray head) and the feedback amount (outlet water) is at least 5 minutes.
The invention provides a control method for outlet moisture of tobacco leaf roller equipment and a readable storage medium thereof aiming at the problems and the current situation.
Disclosure of Invention
Aiming at the defects and shortcomings in the background technology, the invention improves and innovates the defects, and aims to provide a device which can realize that the moisture at the outlet of the device reaches the actual set value rapidly in the stub bar stage, and the response speed of the moisture at the outlet is regulated in real time in the production process, so that the deviation value is small.
In order to solve the above problems and achieve the above objects, the present invention provides a method for controlling outlet moisture of tobacco leaf roller equipment and a readable storage medium thereof, which are realized by adopting the following design structure and the following technical scheme:
a method for controlling outlet moisture of tobacco leaf roller equipment, the method comprising the steps of:
step 1, obtaining historical outlet moisture values of a plurality of groups of tobacco leaf roller equipment;
step 2, counting and calculating the historical outlet water content value to obtain an initial water adding number K 0 ；
Step 3, correcting the initial water adding number K according to the real-time value of the outlet water in the production process or the outlet water value after the outlet water in the production process is delayed for a certain time 0 Obtaining a corrected water adding number K;
step 4, calculating the water adding quantity value F of the tobacco leaf roller equipment based on the corrected water adding coefficient K Is provided with According to the water adding value F of the tobacco leaf roller equipment Is provided with And carrying out on-line adjustment on the water adding amount of the tobacco leaf roller equipment.
Preferably, the outlet moisture value is obtained by a moisture detection device or a moisture detector arranged at the outlet of the tobacco leaf roller equipment.
Preferably, the historical outlet moisture values are m respectively 1 、m 2 …m p The corresponding data quantity number is a 1 、a 2 …a p The initial water addition number K 0 The method comprises the following steps:
preferably, in step 3, the initial water addition number K is corrected according to the real-time value of the outlet water in the production process 0 Comprising the following steps:
a) Setting n acquisition windows for storing M Out of ，M Out of In order to collect the actual value of the water at the outlet of the roller, the data collection amount of each collection window is set to be M, and M is collected every t seconds Out of Stacking data into each corresponding acquisition window, wherein the time interval between the acquisition window n and the acquisition window n-1 is m/n seconds;
b) M of any one acquisition window Out of When the data acquisition reaches the set value, M in the acquisition window is obtained Out of The arithmetic mean of the data, i.e. M Go out all ；
c) Calculate M Go out all And a set value M Is provided with If the difference delta is within the fine adjustment range, the water adding number K is kept unchanged;
if the difference delta is within the range of the fine adjustment value and the coarse adjustment value, the water adding coefficient K=K 0 + fine tuning value or k=k 0 -fine tuning values; if the difference delta is outside the coarse tuning range, k=k 0 + coarse value or k=k 0 -coarse tuning values;
d) And (5) clearing all data in the acquisition window reaching the set value, or setting a data-free state in the window, and re-stacking new data.
Preferably, in step 3, the initial water addition number K is corrected according to the outlet water content value after the outlet water content is delayed for a certain time in the production process 0 Comprising the following steps:
s1) when materials exist at the outlet of the equipment, after a certain time delay, the system starts to collect the outlet moisture of each collection window of the equipment, namely M Out of Collecting M at regular intervals Out of Data are stacked in each corresponding collection window stack pool, the total collection quantity is set to be A, the collected moisture value is accurate to 1 bit after the decimal point;
s2) stopping collecting when the inlet and the outlet of the equipment are free of materials; in the stack pool, it is assumed that there are n different moisture values, each different numberThe moisture value of the values is A in total i The number of corresponding occurrences of each moisture value in the stack pool, A i Arranged in descending order, i.e. A 1 、A 2 、、A n The method comprises the steps of carrying out a first treatment on the surface of the Setting the upper limit of the total class of the data as p, calculating and comparing the total class of the data according to the following formula:
if the water adding coefficient K is not satisfied, the batch production data is invalid and is not reserved, namely the water adding coefficient K is not changed, and the initial water adding coefficient K of the production is used in the next production 0 ；
If the formula is satisfied, the batch production data is valid, and the batch data, i.e., the moisture value M, is retained 1 、M 2 …M p Corresponding data quantity A 1 、A 2 、A p Calculating the water adding number K of the batch according to the batch data;
s3) saving the calculated water adding coefficient K in system formula data as an initial water adding coefficient K in the next batch production 0 。
Preferably, the calculating the K value according to the valid data of step S2) includes: the water addition number K is calculated by the following formula
Preferably, the K 0 Set M for the device outlet moisture at 0.1 Is provided with =20, fine tuning value of 0.04, coarse tuning value of 0.09.
Preferably, the upper limit of the total class of the set data is p=10, and the duty ratio accumulation threshold d=0.4.
Preferably, calculating the water addition value of the tobacco leaf roller equipment based on the corrected initial water addition number K comprises: the water adding quantity value F of the tobacco leaf roller equipment is calculated by the following formula Is provided with
Wherein M is Is provided with For setting the water content at the outlet of the roller, M Enter into practice For the actual value of the drum inlet moisture, F Weighing scale Is the actual inlet flow to the drum inlet.
Preferably, a computer readable storage medium has instructions stored thereon, which when executed on a computer, cause the computer to perform the method.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention is superior to the traditional control method: the unqualified tobacco leaves of the stub bar are reduced, and the process index in the production process is more excellent and accurate;
2. the invention has a plurality of influencing factors on the outlet moisture, such as water vapor, air humidity and the like in the material atomization of the charging machine, and the simple feedforward control cannot meet the requirements of process indexes. K (K) 1 Real-time correction of the values is similar to conventional PID feedback control, which is too hysteretic. The hysteresis of the control mode is much smaller than that of the traditional PID control;
3. due to the K of the invention 0 The value history is determined, each batch of production is started, and the initial value of the K value is revised by utilizing history data, so that the outlet moisture of the equipment is controlled to have a proper K value, and the outlet moisture of the material head stage can quickly reach the set value;
4. the real-time correction of the invention achieves accurate and rapid feedback control. The history correction is to calculate a reasonable initial water adding number K by using a large amount of history data after the previous batch production 0 And adding reasonable water quantity at the beginning of the production of the batch as much as possible, and reducing the feedback effect as much as possible.
Drawings
The invention is described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is an overall general flow diagram of the present invention;
FIG. 2 is a flow diagram of the K value real-time correction of the present invention;
FIG. 3 is a flow chart of the K-value history correction value determination of the present invention;
fig. 4 is a graph generated by the present invention based on the real-time value of the moisture at the outlet of the conditioning drum in the slice conditioning line.
Detailed Description
In order to make the technical means, the inventive features, the achieved objects and the effects of the present invention easy to understand, the technical solution of the present invention will be described in further detail below with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments and the features in the embodiments in the present application may be combined without conflict. The invention will be described in detail below with reference to the drawings in connection with embodiments.
A method for controlling outlet moisture of tobacco leaf roller equipment, the method comprising the steps of:
step 1, obtaining historical outlet moisture values of a plurality of groups of tobacco leaf roller equipment;
step 2, counting and calculating the historical outlet water content value to obtain an initial water adding number K 0 ；
Step 3, correcting the initial water adding number K according to the real-time value of the outlet water in the production process or the outlet water value after the outlet water in the production process is delayed for a certain time 0 Obtaining a corrected water adding number K;
step 4, calculating the water adding quantity value F of the tobacco leaf roller equipment based on the corrected water adding coefficient K Is provided with According to the water adding value F of the tobacco leaf roller equipment Is provided with And carrying out on-line adjustment on the water adding amount of the tobacco leaf roller equipment.
Further, the outlet moisture value is obtained through a moisture detection device or a moisture detector arranged at the outlet of the tobacco leaf roller equipment.
Further, the historical outlet moisture values are m respectively 1 、m 2 …m p The corresponding data quantity number is a 1 、a 2 …a p The initial water addition number K 0 The method comprises the following steps:
further, in step 3, the initial water addition number K is corrected according to the real-time value of the outlet water in the production process 0 Comprising the following steps:
a) Setting n acquisition windows for storing M Out of ，M Out of In order to collect the actual value of the water at the outlet of the roller, the data collection amount of each collection window is set to be M, and M is collected every t seconds Out of Stacking data into each corresponding acquisition window, wherein the time interval between the acquisition window n and the acquisition window n-1 is m/n seconds;
b) M of any one acquisition window Out of When the data acquisition reaches the set value, M in the acquisition window is obtained Out of The arithmetic mean of the data, i.e. M Go out all ；
c) Calculate M Go out all And a set value M Is provided with If the difference delta is within the fine adjustment range, the water adding number K is kept unchanged;
if the difference delta is within the range of the fine adjustment value and the coarse adjustment value, the water adding coefficient K=K 0 + fine tuning value or k=k 0 -fine tuning values; if the difference delta is outside the coarse tuning range, k=k 0 + coarse value or k=k 0 -coarse tuning values;
d) And (5) clearing all data in the acquisition window reaching the set value, or setting a data-free state in the window, and re-stacking new data.
Further, in step 3, the initial water addition number K is corrected according to the outlet water content value obtained after the outlet water content is delayed for a certain time in the production process 0 Comprising the following steps:
s1) when materials exist at the outlet of the equipment, after a certain time delay, the system starts to collect the outlet moisture of each collection window of the equipment, namely M Out of Collecting M at regular intervals Out of Data are stacked in each corresponding collection window stack pool, the total collection quantity is set to be A, the collected moisture value is accurate to 1 bit after the decimal point;
s2) stopping collecting when the inlet and the outlet of the equipment are free of materials;in the stack pool, it is assumed that there are n different moisture values, each of which shares A i The number of corresponding occurrences of each moisture value in the stack pool, A i Arranged in descending order, i.e. A 1 、A 2 、、A n The method comprises the steps of carrying out a first treatment on the surface of the Setting the upper limit of the total class of the data as p, calculating and comparing the total class of the data according to the following formula:
if the water adding coefficient K is not satisfied, the batch production data is invalid and is not reserved, namely the water adding coefficient K is not changed, and the initial water adding coefficient K of the production is used in the next production 0 ；
If the formula is satisfied, the batch production data is valid, and the batch data, i.e., the moisture value M, is retained 1 、M 2 …M p Corresponding data quantity A 1 、A 2 、A p Calculating the water adding number K of the batch according to the batch data;
s3) saving the calculated water adding coefficient K in system formula data as an initial water adding coefficient K in the next batch production 0 。
Further, the calculating the K value according to the valid data of step S2) includes: the water addition number K is calculated by the following formula
Further, the K 0 Set M for the device outlet moisture at 0.1 Is provided with =20, fine tuning value of 0.04, coarse tuning value of 0.09.
Further, the upper limit of the total class of the set data is p=10, and the duty ratio accumulation threshold d=0.4.
Specifically, calculating the water adding amount value of the tobacco leaf roller equipment based on the corrected initial water adding number K comprises the following steps: the water adding quantity value F of the tobacco leaf roller equipment is calculated by the following formula Is provided with
Wherein M is Is provided with For setting the water content at the outlet of the roller, M Enter into practice For the actual value of the drum inlet moisture, F Weighing scale Is the actual inlet flow to the drum inlet.
Further, a computer readable storage medium having stored thereon instructions which, when executed on a computer, cause the computer to perform the method of any of claims 1 to 9.
In summary, more specific embodiments of the present invention are:
the leaf conditioning drum is the first host device for regulating moisture on the tobacco equipment production line, and the control of outlet moisture is always a difficult problem due to different factors of tobacco inlet moisture, flow and tobacco producing places. The blade conditioning cylinder of this embodiment is exemplified.
Example 1 (K value real time correction)
It is assumed that statistics are performed through historical outlet water fraction values and an initial water addition number K is calculated 0 Initial water addition number K 0 Is equal to:
if the calculation is performed to obtain K 0 0.1, K 0 As an initial value of the real-time correction, the device outlet moisture M is set Is provided with =20, fine tuning value of 0.04, coarse tuning value of 0.09. Collecting the actual value of the moisture at the outlet of the moisture regaining cylinder, namely M Out of . A total of n=5 windows are set in the system for storing M Out of Each window holds m=100M Out of Window 5 and window 4 are spaced M/n=20 seconds apart, one M is acquired every t=1 s seconds Out of Acquired M Out of Stacking to each window. Assuming that window 3 holds up to m=100 data, i.e., the window is full, the system calculates an arithmetic average of 100 data in the windowThe value is M Go out all =20.07. Calculate M Go out all Difference between =20.07 and the set point 20, i.e. deviation Δ=0.07, difference 0.07 is in the range of fine and coarse tuning values, k=k 0 +fine value=0.1-0.07=0.03. Window 3 is full, all data in the window is emptied, and new data is re-stacked.
Example 2 (K value history correction)
The outlet of the equipment is provided with materials, and after a certain time delay, the system starts to collect the outlet moisture of the equipment, namely M Out of And (3) placing the water into a stack pool, setting the total allowable collection number as A=500, and taking 1 bit after the decimal point as the collected moisture value. And stopping collecting when the inlet and the outlet of the equipment are free of materials. In the stack pool, it is assumed that there are n=20 different moisture values, each of which has a total of a i The number of corresponding occurrences of each moisture value in the stack pool, A i Arranged in descending order, i.e. A 1 、A 2 、、A n . Setting the upper limit of the total class of the data as p=10, and calculating and comparing the total class of the data with the accumulated threshold D=0.4If the water content is satisfied, the batch production data is valid, and the batch data, i.e. the water content M, is retained 1 、M 2 …M p Corresponding data quantity A 1 、A 2 、、A p . Calculating K value->This value of K is retained as the initial value of K at the next batch production.
As shown in a graph 4, the fluctuation of the invention is small, the invention is more stable, the water at the outlet of the equipment can reach the actual set value rapidly in the stub bar stage, the response speed of the water at the outlet is regulated in real time in the production process, and the deviation value is small.
Finally, it should be noted that the above-mentioned embodiments illustrate rather than limit the invention in any way, and that those skilled in the art will be able to utilize the above-mentioned embodiments and modifications of the invention as well as equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (6)
1. A method for controlling outlet moisture of tobacco leaf roller equipment, which is characterized by comprising the following steps:
step 1, obtaining historical outlet moisture values of a plurality of groups of tobacco leaf roller equipment;
step 2, counting and calculating the historical outlet water content value to obtain an initial water adding number K 0 ；
Step 3, correcting the initial water adding number K according to the outlet water value after the outlet water is delayed for a certain time in the production process 0 Obtaining a corrected water adding number K; wherein, the liquid crystal display device comprises a liquid crystal display device,
the initial water adding number K is corrected according to the outlet water value after the outlet water is delayed for a certain time in the production process 0 Comprising the following steps:
s1) when materials exist at the outlet of the equipment, after a certain time delay, the system starts to collect the outlet moisture of each collection window of the equipment, namely M Out of Collecting M at regular intervals Out of Data are stacked in each corresponding collection window stack pool, the total collection quantity is set to be A, the collected moisture value is accurate to 1 bit after the decimal point;
s2) stopping collecting when the inlet and the outlet of the equipment are free of materials; in the stack pool, it is assumed that there are n different moisture values, each of which shares A i The number of corresponding occurrences of each moisture value in the stack pool, A i Arranged in descending order, i.e. A 1 、A 2 、…、A n The method comprises the steps of carrying out a first treatment on the surface of the Setting the upper limit of the total class of the data as p, calculating and comparing the total class of the data according to the following formula:
if the water adding coefficient K is not satisfied, the batch production data is invalid and is not reserved, namely the water adding coefficient K is not changed, and the initial water adding coefficient K of the production is used in the next production 0 ；
If the formula is satisfied, the batch production data is valid, and the batch data, i.e., the moisture value M, is retained 1 、M 2 、…、M p Corresponding data quantity A 1 、A 2 、…、A p Calculating the water adding number K of the batch according to the batch data;
s3) saving the calculated water adding coefficient K in system formula data as an initial water adding coefficient K in the next batch production 0 ；
The valid data calculation K value includes: the water addition number K is calculated by the following formula
Step 4, calculating the water adding quantity value F of the tobacco leaf roller equipment based on the corrected water adding coefficient K Is provided with According to the water adding value F of the tobacco leaf roller equipment Is provided with And carrying out on-line adjustment on the water adding amount of the tobacco leaf roller equipment.
2. The method according to claim 1, wherein the outlet moisture value is obtained by a moisture detecting device or a moisture detector installed at the outlet of the tobacco leaf roller apparatus.
3. A method for controlling outlet moisture of tobacco leaf roller apparatus according to claim 1, wherein the historical outlet moisture values are m respectively 1 、m 2 、…、m p The corresponding data quantity number is a 1 、a 2 、…、a p The initial water addition number K 0 The method comprises the following steps:
4. the method for controlling outlet moisture of tobacco leaf roller equipment according to claim 1, wherein the total set data is p=10, and the duty ratio accumulation threshold d=0.4.
5. A method of controlling outlet moisture of a tobacco leaf roller apparatus according to any one of claims 1 to 4, wherein calculating a tobacco leaf roller apparatus water addition value based on the corrected initial water addition number K comprises: the water adding quantity value F of the tobacco leaf roller equipment is calculated by the following formula Is provided with
Wherein M is Is provided with For setting the water content at the outlet of the roller, M Enter into practice For the actual value of the drum inlet moisture, F Weighing scale Is the actual inlet flow to the drum inlet.
6. A computer readable storage medium having stored thereon instructions which, when executed on a computer, cause the computer to perform the method of any of claims 1 to 5.
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