CN115381128A - Method for controlling moisture at outlet of tobacco leaf roller equipment and readable storage medium thereof - Google Patents
Method for controlling moisture at outlet of tobacco leaf roller equipment and readable storage medium thereof Download PDFInfo
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- CN115381128A CN115381128A CN202211032582.2A CN202211032582A CN115381128A CN 115381128 A CN115381128 A CN 115381128A CN 202211032582 A CN202211032582 A CN 202211032582A CN 115381128 A CN115381128 A CN 115381128A
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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 method for controlling moisture at an outlet 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 multiple groups of tobacco leaf roller equipment; step 2, counting and calculating the historical outlet moisture value to obtain an initial water adding coefficient K 0 (ii) a Step 3, correcting the initial water adding coefficient K according to the real-time value of the outlet water in the production process or the outlet water value after the outlet water is delayed for a certain time in the production process 0 Obtaining a corrected water adding coefficient 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 amount value F of the tobacco leaf roller equipment Is provided with And performing on-line adjustment on the water adding amount of the tobacco leaf roller equipment. The invention can realize that in the material head stage,the moisture at the outlet of the device quickly reaches an actual set value, and the response speed of adjusting the moisture at the outlet in real time is high and the deviation value is small in the production process.
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 speaking, in the field of tobacco industry processing, the cylinders are equipments, such as a moisture regaining cylinder on a tobacco making line, a feeder, a leaf moistening cylinder on a redrying line, etc. The control of the moisture of the outlet at the present stage is mainly to control the moisture content of the outlet tobacco leaves by adding water to the tobacco leaves in the roller through a water adding spray head, wherein the water adding spray head mainly comprises a water adding spray head arranged at the position of the inlet of the roller, a water adding spray head arranged at the position of the outlet of the roller or a water adding spray head respectively arranged at the positions of the inlet and the outlet of the roller.
The control of the water adding amount is mainly completed by the action of a feedforward control colleague and a feedback control colleague, and the feedback control basically adopts the traditional PID algorithm.
The control of the method is always difficult, and the main reasons are three: 1. and the interference factors are more, such as the influence of the ambient temperature and humidity, the hot air temperature, the rotation number of the roller, the moisture of the 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 difference of the internal characteristics of the tobacco leaves, the water absorption characteristics of the tobacco leaves in different producing areas and different positions on the same tobacco stem are different, and the water absorption characteristics of the tobacco leaves are also different at different temperatures. 3. The hysteresis is large, such as a leaf moistening cylinder on a redrying line, and the reaction time of the execution amount (water adding spray head) and the feedback amount (outlet moisture) is at least 5 minutes.
The present invention provides a method for controlling moisture at the outlet of a tobacco leaf roller device and a readable storage medium thereof.
Disclosure of Invention
Aiming at various defects and shortcomings in the background technology, the invention is improved and innovated, and aims to provide a method which can realize that the water at the outlet of the equipment quickly reaches the actual set value at the stub bar stage, and has quick response speed and small deviation value when adjusting the water at the outlet in real time in the production process.
In order to solve the above problems and achieve the above object, the present invention provides a method for controlling moisture at the outlet of a tobacco leaf roller device and a readable storage medium thereof, which is realized by adopting the following design structure and the following technical scheme:
a method of controlling moisture at the outlet of a tobacco leaf roller apparatus, the method comprising the steps of:
step 2, counting and calculating the historical outlet moisture value to obtain an initial water adding coefficient K 0 ；
Step 3, correcting the initial water adding coefficient 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 coefficient K;
Preferably, the outlet moisture value is obtained by a moisture detection device or a moisture detector installed at the outlet of the tobacco leaf roller device.
Preferably, the historical outlet moisture values are m 1 、m 2 …m p The corresponding number of data amounts is a 1 、a 2 …a p The initial water addition coefficient K 0 Comprises the following steps:
preferably, in step 3, the initial water adding coefficient K is corrected according to the real-time value of the outlet water content in the production process 0 The method comprises the following steps:
a) Setting n acquisition windows for storing M Go out ，M Go out In order to collect the actual value of the moisture 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 Go out Stacking the data into each corresponding acquisition window, wherein the time interval between an acquisition window n and an acquisition window n-1 is m/n seconds;
b) M of any one acquisition window Go out When the data acquisition reaches a set value, M in the acquisition window is calculated Go out The arithmetic mean of the data is M Go out uniformly ；
c) Calculating M Go out uniformly And a set value M Is provided with If the difference value delta is within the fine tuning value range, the water adding coefficient K is kept unchanged;
if the difference value delta is within the range of the fine adjustment value and the coarse adjustment value, the water adding coefficient K = K at the moment 0 + fine adjustment value or K = K 0 -a fine tuning value; if the difference value delta is out of the range of the coarse adjustment value, K = K 0 + coarse adjustment or K = K 0 -a coarse tuning value;
d) And emptying all data in the acquisition window reaching the set value or placing the window in a non-data state, and restacking new data.
Preferably, in step 3, the initial water adding coefficient K is corrected according to the outlet moisture value after the outlet moisture is delayed for a certain time in the production process 0 The method comprises the following steps:
s1) equipment outWhen the material is in the opening, after a certain time delay, the system starts to collect the outlet moisture of each collection window of the equipment, namely M Go out Collecting M at regular intervals Go out Stacking data into each corresponding acquisition window stack pool, setting the total acquisition quantity as A, and accurately acquiring the moisture value to 1 bit behind the decimal point;
s2) stopping collecting when no material exists at the inlet and the outlet of the equipment; in the stack, assume that there are n different moisture values, and the moisture value of each different value shares A i One, i.e. the number of occurrences, A, for each moisture value in the stack i In descending order, i.e. A 1 、A 2 、、A n (ii) a Setting the upper limit of the general class of data as p, and calculating and comparing according to the following formula:
if the formula 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 still used in the next production 0 ；
If the formula is satisfied, the batch production data is valid, and the batch data, namely the moisture value M, is retained 1 、M 2 …M p Corresponding data quantity number A 1 、A 2 、A p Calculating the water adding coefficient K of the batch according to the batch data;
s3) storing the calculated water adding coefficient K in system formula data as an initial water adding coefficient K when the next batch of secondary production 0 。
Preferably, the calculating the K value according to the valid data of step S2) includes: the water addition coefficient K is calculated by the following formula
Preferably, said K 0 To 0.1, the plant outlet moisture set M Is provided with =20, fine adjustment value is 0.04, and coarse adjustment value is 0.09.
Preferably, the set data total class upper limit is p =10, and the occupancy cumulative threshold D =0.4.
Preferably, the calculating of the watering amount value of the tobacco leaf roller device based on the corrected initial watering coefficient K comprises: calculating the water adding amount value F of the tobacco leaf roller equipment by the following formula Is provided with
In the formula, M Is provided with For drum outlet moisture set point, M Enter true Is the actual value of the drum inlet moisture, F Balance Is the actual inlet flow of the drum inlet.
Preferably, a computer-readable storage medium has stored thereon instructions 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 tobacco leaves with unqualified stub bars are reduced, and the process index in the production process is more excellent and accurate;
2. because the invention has more influence factors on the outlet moisture, such as water vapor, air humidity and the like in the material atomization of the feeding machine, the requirement of the process index cannot be met by the simple feedforward control. K is 1 The real-time correction of the value is similar to the conventional PID feedback control, which has too much hysteresis. The hysteresis of the control mode is much smaller than that of the traditional PID control;
3. due to K of the invention 0 The value history is determined, each batch of production is started, the historical data is utilized, the initial value of the K value is rebuilt, the outlet moisture of the equipment is controlled to have a proper K value, and the outlet moisture of the stub bar 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 history by using a large amount of history data after previous secondary productionReasonable initial water addition coefficient K 0 The reasonable amount of water is added as soon as the batch begins to produce as much as possible, and the effect of feedback is reduced 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 flow chart of the present invention;
FIG. 2 is a flow diagram illustrating the real-time K value correction of the present invention;
FIG. 3 is a flow diagram illustrating the historical correction value determination for K values according to the present invention;
FIG. 4 is a graph generated according to the present invention based on the real-time moisture value at the outlet of the dampening cylinder in the slice dampening line.
Detailed Description
In order to make the technical means, the inventive features, the achievement objects and the effects of the present invention easy to understand, the technical solutions of the present invention are further described in detail below with reference to the accompanying drawings and the detailed description, and it is to be noted that the embodiments and the features of the embodiments in the present application can be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
A method for controlling moisture at an outlet of a tobacco leaf roller device comprises the following steps:
step 2, counting and calculating the historical outlet moisture value to obtain an initial water adding coefficient K 0 ；
Step 3, correcting the initial water adding coefficient 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 coefficient K;
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 number of data amounts is a 1 、a 2 …a p The initial water addition coefficient K 0 Comprises the following steps:
further, in step 3, the initial water adding coefficient K is corrected according to the real-time value of the outlet water in the production process 0 The method comprises the following steps:
a) Setting n acquisition windows for storing M Go out ，M Go out For collecting the actual value of the moisture 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 Go out Stacking the data into each corresponding acquisition window, wherein the time interval between an acquisition window n and an acquisition window n-1 is m/n seconds;
b) M of any one acquisition window Go out When the data acquisition reaches a set value, M in the acquisition window is calculated Go out The arithmetic mean of the data is M Go out uniformly ；
c) Calculating M Go out uniformly And a set value M Is provided with If the difference value delta is within the fine tuning value range, the water adding coefficient K is kept unchanged;
if the difference value delta is within the range of the fine adjustment value and the coarse adjustment value, the water adding coefficient K = K at the moment 0 + Fine adjustment value or K = K 0 -a fine tuning value; if the difference value delta is out of the range of the coarse adjustment value, K = K 0 + coarse adjustment or K = K 0 -a coarse tuning value;
d) And emptying all data in the acquisition window reaching the set value or placing the window in a non-data state, and restacking new data.
Further, in step 3, the initial water adding coefficient K is corrected according to the outlet moisture value after the outlet moisture is delayed for a certain time in the production process 0 The method comprises the following steps:
s1) when materials exist at the outlet of the equipment, delaying for a certain time, and then starting to collect the outlet moisture of each collection window of the equipment by the system, namely M Go out Collecting M at regular intervals Go out Stacking the data into each corresponding acquisition window stacking pool, setting the total acquisition number to be A, and accurately obtaining the acquired moisture value which is 1 digit behind the decimal point;
s2) stopping collecting when no material exists at the inlet and the outlet of the equipment; in the stack, assume that there are n different moisture values, each of which shares a i One, i.e. the number of occurrences, A, for each moisture value in the stack i In descending order, i.e. A 1 、A 2 、、A n (ii) a Setting the upper limit of the general class of data as p, and calculating and comparing according to the following formula:
if the formula 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 still used in the next production 0 ；
If the formula is satisfied, the batch production data is valid, and the batch data, namely the moisture value M, is retained 1 、M 2 …M p Corresponding data quantity number A 1 、A 2 、A p Calculating the water adding coefficient K of the batch according to the batch data;
s3) storing the calculated water adding coefficient K in system formula data as an initial water adding coefficient K when the next batch of secondary production 0 。
Further, the calculating the K value according to the valid data in step S2) includes: the water addition coefficient K is calculated by the following formula
Further, said K 0 To 0.1, the plant outlet moisture set M Is provided with =20, fine tuning value 0.04 and coarse tuning value 0.09.
Further, the set data total class upper limit is p =10, and the occupancy cumulative threshold D =0.4.
Specifically, calculating the water adding value of the tobacco leaf roller equipment based on the corrected initial water adding coefficient K comprises the following steps: calculating the water adding amount value F of the tobacco leaf roller equipment by the following formula Is provided with
In the formula, M Is provided with For drum outlet moisture set point, M Put into reality Is the actual value of the drum inlet moisture, F Balance Is the actual inlet flow of the drum inlet.
Further, a computer-readable storage medium having stored thereon instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1 to 9.
To sum up, the more specific embodiments of the present invention are:
the leaf conditioning cylinder is the first main machine equipment for regulating moisture on the tobacco equipment production line, and due to factors such as the moisture and flow of the tobacco leaves at the inlet, the difference of the production places of the tobacco leaves and the like, the control of the moisture at the outlet is always a difficult problem. The blade dampening cylinder of this embodiment is an example.
Example 1 (K value real-time correction)
Assuming statistics through historical outlet moisture value and calculating initial water adding coefficient K 0 Initial water addition coefficient K 0 Is equal to:
if the above calculation yields K 0 To be 0.1, adding K 0 As an initial value for real-time correction, the outlet moisture M of the apparatus is set Is provided with =20, fine adjustment value 0.04, coarseThe adjustment value is 0.09. Collecting the actual value of moisture at the outlet of the dampening cylinder, namely M Go out . In the system, a total of n =5 windows are set for storing M Go out Each window stores M = 100M Go out The time interval between the window 5 and the window 4 is M/n =20 seconds, and M is collected every t =1s Go out Collected M Go out Stack into each window. Assuming that the data stored in the window 3 reaches M =100, that is, the window data is full, the system calculates the arithmetic mean of 100 data in the window, that is, M Go out uniformly =20.07. Calculating M Go out uniformly A difference of =20.07 from a set value 20, i.e. a deviation Δ =0.07, the difference 0.07 being in the range of fine and coarse adjustment values, K = K 0 + fine adjustment =0.1-0.07=0.03. When the window 3 is full, all data in the window is emptied, and new data is stacked again.
Example 2 (K value history correction)
Materials are arranged at the outlet of the equipment, after a certain time delay, the system starts to collect the outlet moisture of the equipment, namely M Go out And putting the sample into a stack pool, and taking 1 digit after the decimal point according to the total allowable collection quantity of A =500 collected moisture values. And stopping collecting when no material exists at the inlet and the outlet of the equipment. In the stack, it is assumed that there are n =20 different moisture values, the moisture value for each different value sharing a i One, i.e. the number of occurrences, A, for each moisture value in the stack i In descending order, i.e. A 1 、A 2 、、A n . Setting the upper limit of the total class of the data to be p =10 and the cumulative threshold of the occupation ratio D =0.4, calculating and comparing
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 number A 1 、A 2 、、A p . The value of K is calculated and,
this value of K is retained as the initial value of K for the next run.
As shown in a graph 4, the fluctuation of the method is small and stable, the moisture at the outlet of the equipment can quickly reach an actual set value in the stub bar stage, and the response speed of adjusting the moisture at the outlet in real time is high and the deviation value is small in the production process.
Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and not other limitations of the present invention, and those skilled in the art may change or modify the technical content of the above-mentioned disclosure into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. A method for controlling moisture at an outlet of a tobacco leaf roller device is characterized by comprising the following steps:
step 1, obtaining historical outlet moisture values of multiple groups of tobacco leaf roller equipment;
step 2, counting and calculating the historical outlet moisture value to obtain an initial water adding coefficient K 0 ；
Step 3, correcting the initial water adding coefficient K according to the real-time value of the outlet water in the production process or the outlet water value after the outlet water is delayed for a certain time in the production process 0 Obtaining a corrected water adding coefficient 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 quantity value F of the tobacco leaf roller equipment Is provided with And performing on-line adjustment on the water adding amount of the tobacco leaf roller equipment.
2. The method for controlling the moisture at the outlet of the tobacco leaf roller device according to claim 1, wherein the outlet moisture value is obtained by a moisture detection device or a moisture detector installed at the outlet of the tobacco leaf roller device.
3.The method for controlling the outlet moisture of a tobacco leaf roller device according to claim 1, wherein the historical outlet moisture values are m 1 、m 2 …m p The corresponding number of data amounts is a 1 、a 2 …a p The initial watering coefficient K 0 Comprises the following steps:
4. the method for controlling moisture in outlet of tobacco leaf roller equipment according to claim 1, wherein in step 3, the initial water adding coefficient K is corrected according to the real-time value of the outlet moisture in the production process 0 The method comprises the following steps:
a) Setting n acquisition windows for storing M Go out ，M Go out For collecting the actual value of the moisture 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 Go out Data are stacked in each corresponding acquisition window, and the time interval between an acquisition window n and an acquisition window n-1 is m/n seconds;
b) M of any one acquisition window Go out When the data acquisition reaches a set value, M in the acquisition window is calculated Go out The arithmetic mean of the data is M Go out uniformly ；
c) Calculating M Go out uniformly And a set value M Is provided with If the difference value delta is within the fine tuning value range, the water adding coefficient K is kept unchanged;
if the difference value delta is within the range of the fine adjustment value and the coarse adjustment value, the water adding coefficient K = K at the moment 0 + fine adjustment value or K = K 0 -a fine tuning value; if the difference value delta is out of the range of the coarse adjustment value, K = K 0 + coarse adjustment or K = K 0 -a coarse tuning value;
d) And emptying all data in the acquisition window reaching the set value or placing the window in a non-data state, and restacking new data.
5. The method of claim 1The method for controlling the outlet moisture of the tobacco leaf roller equipment is characterized in that in step 3, the initial water adding coefficient K is corrected according to the outlet moisture value of the outlet moisture delayed for a certain time in the production process 0 The method comprises the following steps:
s1) when materials exist at the outlet of the equipment, delaying for a certain time, and then starting to collect the water at the outlet of each collection window of the equipment by the system, wherein the water is M Go out Collecting M at regular intervals Go out Stacking data into each corresponding acquisition window stack pool, setting the total acquisition quantity as A, and accurately acquiring the moisture value to 1 bit behind the decimal point;
s2) stopping collecting when no material exists at the inlet and the outlet of the equipment; in the stack, assume that there are n different moisture values, each of which shares a i One, i.e. the number of occurrences, A, for each moisture value in the stack i In descending order, i.e. A 1 、A 2 、、A n (ii) a Setting the upper limit of the data general category as p, and calculating and comparing the ratio accumulation threshold D according to the following formula:
if the formula 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 still 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 number A 1 、A 2 、A p Calculating the water adding coefficient K of the batch according to the batch data;
s3) storing the calculated water adding coefficient K in system formula data as an initial water adding coefficient K when the next batch of secondary production 0 。
6. The method for controlling moisture at the outlet of a tobacco leaf roller device according to claim 4, wherein the calculating the K value according to the valid data of the step S2) comprises: the water addition coefficient K is calculated by the following formula
7. The method of claim 1, wherein K is the moisture at the outlet of the tobacco tumbling plant 0 To 0.1, the plant outlet moisture set M Is provided with =20, fine tuning value 0.04 and coarse tuning value 0.09.
8. The method of claim 5, wherein the set data summary class upper limit is p =10 and the percentage accumulation threshold D =0.4.
9. The method of any one of claims 1 to 8, wherein calculating the tobacco tumbling apparatus watering value based on the modified initial watering coefficient K comprises: calculating the water adding amount value F of the tobacco leaf roller equipment by the following formula Is provided with
In the formula, M Is provided with For drum outlet moisture set point, M Enter true Is the actual value of the drum inlet moisture, F Balance Is the actual inlet flow of the drum inlet.
10. A computer-readable storage medium having instructions stored thereon which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 9.
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| 朱东风: "影响松散回潮后烟片含水率的分析与控制", 《工程技术》 * |
| 赵汉文: "含水率平行移动法稳定叶丝干燥工序工艺参数的研究", <烟草科技>, no. 10 * |
| 陈彬;: "虹霓的滚筒式烘丝机在生产中的重要控制因素", 农家参谋, no. 11 * |
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