CN108175121B - Method/system for self-correction of parameters, computer readable storage medium and apparatus - Google Patents
Method/system for self-correction of parameters, computer readable storage medium and apparatus Download PDFInfo
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- CN108175121B CN108175121B CN201810026314.7A CN201810026314A CN108175121B CN 108175121 B CN108175121 B CN 108175121B CN 201810026314 A CN201810026314 A CN 201810026314A CN 108175121 B CN108175121 B CN 108175121B
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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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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/11—Plc I-O input output
- G05B2219/1103—Special, intelligent I-O processor, also plc can only access via processor
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Abstract
The invention provides a parameter self-correction method/system, a computer readable storage medium and equipment, wherein the parameter self-correction method comprises the following steps: receiving a specified water drawing rated working point and/or a preloaded dehydration coefficient as a self-correcting target parameter; correcting the water drawing amount rated working point of each cigarette production brand according to the correction mode of the water drawing amount rated working point; and/or correcting the pre-loaded dehydration coefficient of each cigarette production grade according to the correction mode of the pre-loaded dehydration coefficient; wherein, each cigarette production grade comprises a small grade and a conventional grade. The invention is arranged on a set of leaf shred drying equipment in a workshop, namely a roller type thin plate shred drying machine KLD for use. After a cut tobacco drying water stub bar parameter self-correction mode is used, one process quality, namely the process data of the cut tobacco drying water content, is improved, the characteristic values of two stub bar water, namely overshoot and stability time, are improved, and the received good control effect and feedback are achieved.
Description
Technical Field
The invention belongs to the technical field of tobacco shred manufacturing process control, relates to a self-correction method and a self-correction system, and particularly relates to a parameter self-correction method/system, a computer readable storage medium and equipment.
Background
The cut tobacco drying equipment is one of important equipment in cigarette production and is key equipment for determining the inherent quality of cigarettes. In the tobacco shred manufacturing production process in the domestic tobacco industry at present, a drum-type sheet tobacco shred drying machine is the most common tobacco shred drying equipment, and the working principle of the drum-type sheet tobacco shred drying machine is to dry and dehumidify tobacco shreds by adopting a combined drying method of conduction and convection. The working states of the sheet cut-tobacco drier comprise preheating, starting, production and material tailing.
In the starting state, because the cut tobacco does not reach the outlet of the cut tobacco drying cylinder, the cut tobacco drying machine cannot realize the feedback control of the moisture, the temperature of the cylinder wall at the stage is mainly determined by feedforward control, and the feedforward control depends on the understanding of the equipment model and the accuracy of parameter setting.
When the cigarette tobacco production line is adjusted and tested, the technical parameters of the equipment used by the tobacco drying stub bar are solidified by the engineer of a supplier, but the hardware condition of the equipment changes along with the increase of the service time, the yield of small-grade varieties continuously increases, and the original control mode and the equipment parameters can not be suitable for the current production condition.
Therefore, how to provide a parameter self-correction method/system, a computer readable storage medium and a device to solve the technical problems that in the prior art, when a cigarette and cut tobacco production line is adjusted and tested, a supplier engineer solidifies the technical parameters of the device used by a cut tobacco drying stub, but the hardware condition of the device changes along with the increase of the use time, the yield of small-grade varieties continuously increases, the original control mode and the original device parameters cannot be applied to the current production situation, and the like, and the technical problem to be solved by the technical personnel in the field is urgently solved.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention provides a method/system for self-correction of parameters, a computer-readable storage medium and a device, which are used to solve the problem that in the prior art, when a cigarette tobacco production line is prepared and tested, a supplier engineer solidifies the technical parameters of the device used by a tobacco drying stub, but the hardware status of the device changes along with the increase of the use time, and meanwhile, the output of small-grade varieties continuously increases, and the original control mode and device parameters cannot be applied to the current production situation.
In order to achieve the above objects and other related objects, the present invention provides, in one aspect, a parameter self-correction method for correcting a water withdrawal rated operating point and/or a pre-loaded dehydration coefficient in cut tobacco dry moisture content stub bar control parameters; the self-correction method of the parameters comprises the following steps: receiving a specified water drawing rated working point and/or a preloaded dehydration coefficient as a self-correcting target parameter; correcting the water drawing amount rated working point of each cigarette production brand according to the correction mode of the water drawing amount rated working point; and/or correcting the pre-loaded dehydration coefficient of each cigarette production grade according to the correction mode of the pre-loaded dehydration coefficient; wherein, each cigarette production grade comprises a small grade and a conventional grade.
In an embodiment of the present invention, the step of correcting the water drawing amount rated working point of each cigarette production brand according to the correction mode of the water drawing amount rated working point includes: after entering the production process, collecting the data of the temperature of the cylinder wall of the silk drying cylinder and the water drawing amount until the silk drying cylinder enters a material tail state; calculating the average value of the temperature of the wall of the wire drying cylinder and the average value of the water drawing amount according to the collected data of the wall temperature and the water drawing amount of the wire drying cylinder; calculating the water drawing amount based on the rated cylinder wall temperature according to the average value of the water drawing amount; writing the water drawing amount with the rated cylinder wall temperature as the reference into a corresponding water drawing amount data stack according to the cigarette production brand; and extracting the water drawing amount of each batch of each cigarette production grade by taking the rated cylinder wall temperature as a reference from the water drawing amount data stack, and performing weighted average calculation on the water drawing amount to obtain the temporary storage value of the water drawing amount of each cigarette generation grade.
In one embodiment of the invention, the average value of the wall temperature of the wire drying cylinder is equal to the sum of the wall temperatures of the wire drying cylinder collected every preset collection period after the production process is started, and the collection times are divided; the average value of the water drawing amount is equal to the sum of the water drawing amount process data collected every preset collection period after the production process is started, and the collection times are divided. A
In an embodiment of the present invention, the water withdrawal amount based on the rated cylinder wall temperature is equal to the average water withdrawal amount- (the average cylinder wall temperature of the wire drying cylinder-the rated cylinder wall temperature)/the drying coefficient in the recipe parameters of the wire drying machine.
In an embodiment of the present invention, the temporary value of water drawing amount of the cigarette production brand is obtained by multiplying the water drawing amount of the first batch based on the rated cylinder wall temperature by the corresponding weight value + the water drawing amount of the second batch based on the rated cylinder wall temperature by the corresponding weight value + … + the water drawing amount of the nth batch based on the rated cylinder wall temperature by the corresponding weight value.
In an embodiment of the present invention, the step of correcting the preloaded dehydration coefficients of each cigarette production grade according to the correction mode of the preloaded dehydration coefficients comprises: after the silk drying cylinder is shifted to a starting stage, collecting and counting outlet moisture values to obtain the maximum value of the outlet moisture values; calculating the difference value between the preset outlet moisture value and the maximum value of the outlet moisture value obtained after the starting stage; searching a correction coefficient of the pre-loaded dehydration coefficient corresponding to the difference value in a database of the pre-loaded dehydration coefficient; writing the correction coefficient of the preloaded dehydration coefficient into a corresponding preloaded dehydration coefficient data stack corresponding to each cigarette production brand; carrying out weighted average calculation on the correction coefficients of each batch of each cigarette production grade in the pre-loaded dehydration coefficient data stack to obtain the weighted average of the correction coefficients of each cigarette production grade; and calculating the pre-loaded dehydration coefficient of each cigarette production grade according to the weighted average value of the correction coefficients.
In an embodiment of the present invention, the weighted average of the correction coefficients of each cigarette production brand is the correction coefficient of the first batch multiplied by the corresponding weight value + the correction coefficient of the second batch multiplied by the corresponding weight value + … + the correction coefficient of the mth batch multiplied by the corresponding weight value; the pre-loading dehydration coefficient of each cigarette production grade is the weighted average value of the correction coefficients of each cigarette production grade multiplied by the pre-loading dehydration coefficient to be corrected.
The invention provides a parameter self-correcting system which is used for correcting a water drawing rated working point and/or a pre-loading dehydration coefficient in cut tobacco drying moisture content stub bar control parameters; the self-correcting system of the parameters comprises: the receiving module is used for receiving the specified water drawing rated working point and/or the pre-loaded dehydration coefficient as a self-correcting target parameter; the first correction module is used for correcting the water drawing quantity rated working point of each cigarette production brand according to the correction mode of the water drawing quantity rated working point; and/or the second correction module is used for correcting the preloaded dehydration coefficient of each cigarette production brand according to the correction mode of the preloaded dehydration coefficient; wherein, each cigarette production grade comprises a small grade and a conventional grade.
Yet another aspect of the invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method of self-correction of said parameter.
A final aspect of the invention provides an apparatus comprising: a processor and a memory; the memory is configured to store a computer program and the processor is configured to execute the computer program stored by the memory to cause the apparatus to perform the self-correction method of the parameter.
As described above, the self-correction method/system, computer-readable storage medium and apparatus for parameters of the present invention have the following advantages:
the parameter self-correction method/system is deployed on a set of leaf shred drying equipment in a workshop, namely a roller type thin plate shred drying machine KLD for use. After a cut tobacco drying water stub bar parameter self-correction mode is used, one process quality, namely the process data of the cut tobacco drying water content, is improved, the characteristic values of two stub bar water, namely overshoot and stability time, are improved, and the received good control effect and feedback are achieved.
Drawings
Fig. 1A is a flow chart illustrating a method for self-correcting parameters according to an embodiment of the present invention.
Fig. 1B is a schematic flow chart of S12 in the method for self-correcting parameters according to the present invention.
Fig. 1C is a schematic flow chart of S13 in the method for self-correction of parameters according to the present invention.
Fig. 2A is a flow chart illustrating a self-correction method of small-grade parameters according to an embodiment of the present invention.
Fig. 2B is a schematic flow chart of S22 in the self-correction method of small-scale parameter according to the present invention.
Fig. 3 is a schematic structural diagram of a parameter self-correction system according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a self-correcting system for small-grade parameters according to an embodiment of the present invention.
Description of the element reference numerals
3-parameter self-correction system
31 receiving module
32 first correction module
33 second correction module
Self-correcting system for 4 small-grade parameters
40 judging module
43 third correction Module
44 fourth correction Module
45 fifth correction module
46 sixth correction module
S1-Sn step
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.
Example one
The embodiment provides a parameter self-correcting method, which is used for correcting a water drawing rated working point and/or a pre-loading dehydration coefficient in cut tobacco drying moisture content stub bar control parameters; the self-correction method of the parameters comprises the following steps:
receiving a specified water drawing rated working point and/or a preloaded dehydration coefficient as a self-correcting target parameter;
correcting the water drawing amount rated working point of each cigarette production brand according to the correction mode of the water drawing amount rated working point; and/or
Correcting the pre-loaded dehydration coefficient of each cigarette production grade according to the correction mode of the pre-loaded dehydration coefficient;
wherein, each cigarette production grade comprises a small grade and a conventional grade.
The self-correction method of the parameters provided in the present embodiment will be described in detail with reference to the drawings. The parameter self-correction method is used for correcting the water drawing rated working point and/or the pre-loading dehydration coefficient in the cut tobacco drying water content stub bar control parameter.
Before the self-correction method of the parameters described in the present embodiment is performed, the most critical factors affecting the outlet moisture need to be found first, and since the final target object is the outlet moisture, it is first analyzed which factor has the largest influence on the outlet moisture. The factors influencing the moisture at the cut tobacco drying outlet mainly comprise: incoming material moisture, feeding flow, circulating hot air temperature, cylinder wall temperature and draft hood pressure. The 5 predictive variables and 1 response are responded through multivariate linear regression in a linear classification method, and the factor with the largest influence on the outlet moisture is judged to be the cylinder wall temperature. And then selecting cylinder wall temperature parameters, wherein the recipe parameters of the cut-tobacco drying cylinder comprise 12 items, wherein 4 items related to the cylinder wall temperature are respectively a pre-loading dehydration coefficient, a water drawing quantity rated working point (parameter), a cylinder wall temperature rated working point (parameter) and a cylinder wall temperature drying coefficient. In the process of selecting the cylinder wall temperature parameters, a related calculation formula is arranged between the rated water drawing quantity working point (parameter) and the rated cylinder wall temperature working point (parameter), and under the condition that the cylinder temperature and the water drawing quantity in the previous batch of processes are known, the rated water drawing quantity working point and the rated cylinder wall temperature working point can be mutually converted. The front cylinder wall temperature rated working point is a parameter issued by a process department, so the cylinder wall temperature rated working point is selected as a fixed quantity, and the water drawing amount rated working point is selected as a variable quantity. And then carrying out univariate adjustment in the preloading dehydration coefficient, the water drawing rated working point (parameter) and the cylinder wall temperature drying coefficient to observe the influence of the parameters on the cylinder temperature. And selecting the rated working point of the water drawing amount and the pre-loaded dehydration coefficient as self-corrected target parameters.
In this embodiment, the preload coefficient is used to calculate the set cylinder wall temperature through the rated cylinder temperature parameter and the rated water withdrawal parameter in the starting stage of the cut-tobacco drying cylinder. However, in order to reduce the overshoot or undershoot of the head water during starting, a preloading coefficient is arranged in the parameters, the temperature of the cylinder wall can be proportionally increased in the starting stage, and the head water overshoot or undershoot can be reduced through adjustment.
Please refer to fig. 1A, which is a flow chart illustrating a parameter self-correction method according to an embodiment. As shown in fig. 1A, the self-correction method of the parameters specifically includes the following steps:
s11, receiving the specified water drawing rated working point and/or the pre-loaded dehydration coefficient as a self-correcting target parameter; wherein, each cigarette production grade comprises a small grade and a conventional grade. In this embodiment, the small brand refers to a cigarette production brand with low production frequency, and the conventional brand refers to a cigarette production brand with high production frequency.
And S12, correcting the rated water drawing amount working point of each cigarette production brand according to the correction mode of the rated water drawing amount working point.
Referring to fig. 1B, a schematic flow chart of S12 is shown. As shown in fig. 1B, the S12 specifically includes:
and S121, collecting the data of the wall temperature and the water drawing amount of the wire drying cylinder after the wire drying cylinder enters the production process until the wire drying cylinder enters a material tail state. In this embodiment, the data of the wall temperature and the water drawing amount of the wire drying cylinder are collected in a preset collection period until the wire drying cylinder enters a material tail state. For example, data a is automatically collected every 6 seconds1,a2,…,an，b1,b2,…,bnWherein a isnCylinder wall temperature for the nth acquisition, bnThe data of the water drawing process collected for the nth time.
And S122, calculating the average value of the temperature of the cylinder wall and the average value of the water drawing amount according to the collected data of the temperature of the cylinder wall and the water drawing amount of the wire drying cylinder.
For example, the average value of the wall temperature of the baking wire cylinder is equal to the sum of the wall temperatures of the baking wire cylinder collected at predetermined collection periods after the baking wire cylinder enters the production process, and the sum is divided by the collection times, namely
The average value of the water drawing amount is equal to the sum of the data of the water drawing amount process collected every preset collection period after the production process is started, and the collection times are divided, namely
And S123, calculating the water drawing amount based on the rated cylinder wall temperature according to the average water drawing amount.
In this example, the water withdrawal amount based on the rated cylindrical wall temperature is equal to the average water withdrawal amount- (the average cylindrical wall temperature of the spinning cylinder-the rated cylindrical wall temperature)/the drying coefficient in the recipe parameters of the spinning machine.
For example, the barrel temperature of 130 ℃ is taken as the rated barrel wall temperature, and the corresponding water drawing amount C is calculatedw130。
Amount of water drawn
Wherein DFW is the drying coefficient in the parameters of the tobacco dryer.
And S124, writing the water drawing amount based on the rated cylinder wall temperature into a corresponding water drawing amount data stack according to the cigarette production brand.
And S125, extracting the water drawing amount of each batch of each cigarette production grade based on the rated cylinder wall temperature from the water drawing amount data stack, and performing weighted average calculation on the water drawing amount to obtain the temporary storage value of the water drawing amount of each cigarette production grade.
In this step, the weight value corresponding to the water withdrawal amount based on the rated cylinder wall temperature of each batch of each cigarette production brand is preset.
The temporary value of the water drawing amount of each cigarette generation brand is equal to the water drawing amount of the first batch taking the rated cylinder wall temperature as the reference, multiplied by the corresponding weight value, multiplied by the water drawing amount of the second batch taking the rated cylinder wall temperature as the reference, multiplied by the corresponding weight value, multiplied by …, multiplied by the water drawing amount of the Nth batch taking the rated cylinder wall temperature as the reference, multiplied by the corresponding weight value.
For example, the weight values of 20 batches are set to 50% for the first batch weight f1, 30% for the second to tenth batches weight f2, and 20% for the tenth to twentieth batches weight f 3.
Temporary value of water drawing quantity of cigarette generation brand
The calculation formula of (a) is as follows:
and/or
And S13, correcting the preloaded dehydration coefficient of each cigarette production brand according to the correction mode of the preloaded dehydration coefficient.
Please refer to fig. 1C, which shows a schematic flow chart of S13. As shown in fig. 1C, the S13 includes:
s131, collecting and counting outlet moisture values after the silk drying cylinder is switched to a starting stage to obtain the maximum value of the outlet moisture values in the stage until the silk drying cylinder is switched to a production stage.
In this embodiment, the outlet moisture value is collected in a predetermined collection period, for example, every 6 seconds, and recorded, the outlet moisture value collected in the next 6 seconds is compared with the outlet moisture value collected in the last 6 seconds, and if the outlet moisture value is greater than the outlet moisture value, the outlet moisture value collected in the last 6 seconds is covered until the cut-tobacco drier enters the production state, and the maximum value of the outlet moisture value is obtained
S132, calculating the difference value between the preset outlet moisture value and the maximum value of the outlet moisture value acquired after the starting stage.
S133, the correction coefficient of the pre-loaded dehydration coefficient corresponding to the difference value is searched in the database of the pre-loaded dehydration coefficient.
And S134, writing the correction coefficient of the preloaded dehydration coefficient corresponding to each cigarette production brand into a corresponding preloaded dehydration coefficient data stack.
S135, carrying out weighted average calculation on the correction coefficients of each batch of each cigarette production grade in the pre-loaded dehydration coefficient data stack to obtain the weighted average of the correction coefficients of each cigarette production grade.
In this step, the weight value corresponding to the correction coefficient for each batch of each cigarette production brand is set in advance.
The weighted average of the correction coefficients of each cigarette production brand is the correction coefficient of the first batch multiplied by the corresponding weight value + the correction coefficient of the second batch multiplied by the corresponding weight value + … + the correction coefficient of the Mth batch multiplied by the corresponding weight value.
For example, the weight values of 10 batches are set to 50% for the first batch weight f1, 30% for the second to fifth batches f2, and 20% for the sixth to tenth batches f 3.
Weighted average of correction coefficients for cigarette production brands
The calculation formula of (a) is as follows:
and S136, calculating the pre-loaded dehydration coefficient of each cigarette production grade according to the weighted average value of the correction coefficients.
In this embodiment, the pre-loaded dehydration coefficient of each cigarette production grade is the weighted average of the correction coefficients of each cigarette production grade
X preloaded dehydration factor to be corrected.
The method for self-correcting the parameters is deployed on a set of leaf shred drying equipment in a workshop, namely a roller type thin plate shred drying machine KLD for use. After a cut tobacco drying water stub bar parameter self-correction mode is used, one process quality, namely the process data of the cut tobacco drying water content, is improved, the characteristic values of two stub bar water, namely overshoot and stability time, are improved, and the received good control effect and feedback are achieved.
The embodiment further provides a self-correction method of a small-grade parameter based on the self-correction method of the parameters, which includes:
after receiving the current batch of production tasks, judging whether the current batch of production tasks are production tasks of production small marks or not; if so, combining the temporary value of the water drawing amount of the conventional mark of the historical production batch of the conventional mark to obtain the water drawing amount working point parameter of each small mark of the current batch, and correcting the pre-loaded dehydration coefficient of each small mark according to the correction mode of the pre-loaded dehydration coefficient; if not, correcting the water drawing quantity rated working point of each conventional mark according to the correction mode of the water drawing quantity rated working point; meanwhile, according to the correction mode of the pre-loading dehydration coefficient, the pre-loading dehydration coefficient of each conventional grade is corrected.
The self-correction method of the small-grade parameter described in the present embodiment will be described in detail below with reference to the drawings. Please refer to fig. 2A, which is a flowchart illustrating a self-correction method for small-grade parameters according to an embodiment. As shown in figure 2A of the drawings,
s21, after receiving the current batch production task, judging whether the current batch production task is a production task for producing small brands, if yes, executing S22 and S22 ', and if not, executing S23 and S23'.
And S22, acquiring the water drawing amount working point parameters of each small mark of the current batch by combining the temporary storage value of the water drawing amount of the conventional mark of the historical production batch of the conventional mark. Please refer to fig. 2B, which shows a schematic flow chart of S22. As shown in fig. 2B, the S22 includes the following steps:
s221, reading the temporary value of the water drawing amount of the conventional mark in the last production batch of the small mark and the temporary value of the water drawing amount of the conventional mark of the latest production batch of the conventional mark.
S222, acquiring a working condition change reference coefficient according to the temporary value of the water drawing amount of the conventional mark in the last production batch of the small mark and the temporary value of the water drawing amount of the conventional mark of the latest production batch of the conventional mark.
Specifically, the difference between the temporary value of the water drawing amount of the conventional mark when the small mark is in the previous production batch and the temporary value of the water drawing amount of the conventional mark of the latest production batch of the conventional mark is calculated, and the working condition change reference coefficient corresponding to the difference between the two is obtained by searching in the database according to the difference between the two.
S223, reading the temporary value of the water drawing amount of the last production batch of the small grade and reading the temporary value of the water drawing amount of the small grade of the current production batch of the small grade.
S224, obtaining a small-grade water drawing amount change reference coefficient according to the water drawing amount temporary storage value of the previous production batch of the small grade and the water drawing amount temporary storage value of the current production batch of the small grade.
Specifically, the difference between the temporary value of the water drawing amount of the previous production batch of the small grade and the temporary value of the water drawing amount of the current production batch of the small grade is calculated, and the reference coefficient of the change of the water drawing amount of the small grade corresponding to the difference between the two is searched and obtained in the database according to the difference between the two.
S225, averaging the working condition change reference coefficient and the small-grade water drawing quantity change reference coefficient to obtain a water drawing quantity change proportion coefficient. That is, the water withdrawal quantity change proportion coefficient is (working condition change reference coefficient + small grade water withdrawal quantity change reference coefficient)/2.
S226, multiplying the preset small-grade water drawing quantity parameter by the obtained water drawing quantity change proportion coefficient to obtain the water drawing quantity working point parameter of each small grade in the current batch.
And S22', correcting the pre-loaded dehydration coefficient of each small mark according to the correction mode of the pre-loaded dehydration coefficient.
Specifically, the method comprises the following steps:
after the silk drying cylinder is shifted to a starting stage, collecting and counting outlet moisture values to obtain the maximum value of the outlet moisture values;
calculating the difference value between the preset outlet moisture value and the maximum value of the outlet moisture value obtained after the starting stage;
searching a correction coefficient of the pre-loaded dehydration coefficient corresponding to the difference value in a database of the pre-loaded dehydration coefficient;
writing the correction coefficient of the preloaded dehydration coefficient corresponding to each small mark into a corresponding preloaded dehydration coefficient data stack;
carrying out weighted average calculation on the correction coefficients of each batch of each small grade in the pre-loaded dehydration coefficient data stack to obtain the weighted average of the correction coefficients of each small grade;
and calculating the pre-loaded dehydration coefficient of each small grade according to the weighted average value of the correction coefficients.
And S23, correcting the water drawing amount rated working point of each conventional mark according to the correction mode of the water drawing amount rated working point.
Specifically, step S23 includes:
after entering the production process, collecting the data of the temperature of the cylinder wall of the silk drying cylinder and the water drawing amount until the silk drying cylinder enters a material tail state;
calculating the average value of the temperature of the cylinder wall and the average value of the water drawing amount according to the collected data of the temperature of the cylinder wall and the water drawing amount process of the wire drying cylinder;
calculating the water drawing amount based on the rated cylinder wall temperature according to the average value of the water drawing amount;
writing the water drawing amount with the rated cylinder wall temperature as the reference into a corresponding water drawing amount data stack according to each conventional mark;
extracting the water drawing amount of each batch of each conventional grade by taking the rated cylinder wall temperature as the reference from the water drawing amount data stack, and carrying out weighted average calculation on the water drawing amount of each conventional grade to obtain the temporary storage value of the water drawing amount of each conventional grade.
And S23', correcting the pre-loading dehydration coefficient of each conventional mark according to the correction mode of the pre-loading dehydration coefficient.
Specifically, S23' includes:
after the silk drying cylinder is shifted to a starting stage, acquiring and counting an outlet moisture value to obtain the maximum value of the outlet moisture value in the stage until the silk drying cylinder is shifted to a production stage;
calculating the difference value between the preset outlet moisture value and the maximum value of the outlet moisture value obtained after the starting stage;
searching a correction coefficient of the pre-loaded dehydration coefficient corresponding to the difference value in a database of the pre-loaded dehydration coefficient;
writing the correction coefficient of the preloaded dehydration coefficient into a corresponding preloaded dehydration coefficient data stack corresponding to each conventional grade;
performing a weighted average calculation of the correction coefficients for each batch of conventional grades in the preloaded dehydration coefficient data stack to
Acquiring a weighted average value of correction coefficients of all conventional marks;
and calculating the pre-loaded dehydration coefficient of each conventional grade according to the weighted average value of the correction coefficients.
The small-grade parameter self-correction method enables the control mode to be suitable for the working condition of hardware change of the cut-tobacco drier and gives consideration to the characteristics of small grade, and improves stub bar characteristic indexes and process capability indexes of conventional grade and small-grade task production.
The self-correction method provided by the embodiment is deployed on a set of leaf shred drying equipment in a workshop, namely a roller type thin plate shred drying machine KLD for use. After a cut tobacco drying water stub bar parameter self-correction mode is used, one process quality, namely the process data of the cut tobacco drying water content, is improved, the characteristic values of two stub bar water, namely overshoot and stability time, are improved, and the received control effect and feedback are good. Through sampling for two months, data of a conventional 62-lot with a stub bar and data of a 39-lot with a stub bar are obtained. The concrete effects are as follows:
the internal control indexes of the dried water content of the plant cut tobacco are as follows:
1. the dried moisture content Ppk of the conventional grade cut tobacco reaches the standard of more than or equal to 2.00, and the standard reaching rate is improved to 80.6 percent from the original 70 percent; the stability-reaching time is less than or equal to 12min, and the standard reaching rate is improved from the original 30% to 85.4%; the absolute value of the overshoot of the water stub bar is less than or equal to 0.5 percent, and the standard reaching rate is improved from the original 70 percent to 91.9 percent;
2. the dried moisture content Ppk of the small-grade cut tobacco reaches the standard of more than or equal to 1.33, and the standard reaching rate is improved from the original 50 percent to 82.5 percent; the stability-achieving time is less than or equal to 13min, and the standard-reaching rate is improved from the original 30% to 87.1%; the absolute value of the overshoot of the water stub bar is less than or equal to 0.5 percent, and the standard reaching rate is improved from the original 50 percent to 84.6 percent.
The present embodiment also provides a storage medium (computer-readable storage medium) having stored thereon a computer program which, when executed by a processor, implements the self-correction method for the parameter, and/or implements the self-correction method for the minor-brand parameter. Those of ordinary skill in the art will understand that: all or part of the steps for implementing the above method embodiments may be performed by hardware associated with a computer program. The aforementioned computer program may be stored in a computer readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Example two
The parameter self-correcting system is used for correcting a water drawing rated working point and/or a pre-loading dehydration coefficient in cut tobacco drying moisture content stub bar control parameters. Referring to fig. 3, a schematic diagram of a parameter self-correction system according to an embodiment is shown. As shown in fig. 3, the self-correction system 3 for the parameters includes: a receiving module 31, a first modification module 32 and/or a second modification module 33.
In this embodiment, the receiving module 31 is configured to receive the specified water withdrawal rated operating point and/or the pre-loaded dehydration coefficient as the self-correction target parameter. Wherein, each cigarette production grade comprises a small grade and a conventional grade.
The first correcting module 32 coupled to the receiving module 32 is used for correcting the water drawing amount rated working point of each cigarette production brand according to the correcting mode of the water drawing amount rated working point.
Specifically, the first modification module 32 is configured to collect data of a temperature of a cylinder wall and a water drawing amount of the cut tobacco drying cylinder after entering a production process until the cut tobacco drying cylinder enters a material tail state; calculating the average value of the temperature of the cylinder wall and the average value of the water drawing amount according to the collected data of the temperature of the cylinder wall and the water drawing amount of the wire drying cylinder; calculating the water drawing amount based on the rated cylinder wall temperature according to the average value of the water drawing amount; writing the water drawing amount with the rated cylinder wall temperature as the reference into a corresponding water drawing amount data stack according to the cigarette production brand; and extracting the water drawing amount of each batch of each cigarette production grade by taking the rated cylinder wall temperature as a reference from the water drawing amount data stack, and performing weighted average calculation on the water drawing amount to obtain the temporary storage value of the water drawing amount of each cigarette generation grade.
The second correction module 33 coupled to the receiving module 31 is configured to correct the preloaded dehydration coefficients of each cigarette production brand according to a correction mode of the preloaded dehydration coefficients.
Specifically, the second correction module 33 is configured to collect data of a cylinder wall temperature and a water drawing amount process of the cut tobacco drying cylinder after entering a production process until the cut tobacco drying cylinder enters a material tail state; calculating the average value of the temperature of the cylinder wall and the average value of the water drawing amount according to the collected data of the temperature of the cylinder wall and the water drawing amount of the wire drying cylinder; calculating the water drawing amount based on the rated cylinder wall temperature according to the average value of the water drawing amount; writing the water drawing amount with the rated cylinder wall temperature as the reference into a corresponding water drawing amount data stack according to the cigarette production brand; and extracting the water drawing amount of each batch of each cigarette production grade by taking the rated cylinder wall temperature as a reference from the water drawing amount data stack, and performing weighted average calculation on the water drawing amount to obtain the temporary storage value of the water drawing amount of each cigarette generation grade.
The embodiment also provides a small-grade parameter self-correcting system based on the parameter self-correcting system. Please refer to fig. 4, which is a schematic structural diagram of a self-correcting system for small-grade parameters in an embodiment. As shown in fig. 4, the self-correcting system 4 for small-grade parameters includes a determining module 40, a third correcting module 43, a fourth correcting module 44, a fifth correcting module 45, and a sixth correcting module 46.
Specifically, the determining module 40 is configured to determine whether the current batch of production tasks is a production task with a small production grade after receiving the current batch of production tasks, if so, invoke the third correcting module 43 and the fourth correcting module 44, and if not, invoke the fifth correcting module 45 and the sixth correcting module 46.
The third correction module 43 is configured to obtain the water drawing amount working point parameter of each small mark in the current batch by combining the temporary value of the water drawing amount of the conventional mark in the historical production batch of the conventional mark.
Specifically, the third correction module 43 is configured to read the temporary storage value of the water drawing amount of the conventional grade of the penultimate production batch of the conventional grade and the temporary storage value of the water drawing amount of the conventional grade of the latest production batch of the conventional grade; acquiring a working condition change reference coefficient according to the temporary storage value of the water drawing amount of the conventional mark of the penultimate production batch of the conventional mark and the temporary storage value of the water drawing amount of the conventional mark of the latest production batch of the conventional mark; reading the temporary water drawing amount value of the small grade of the penultimate production batch and the temporary water drawing amount value of the small grade of the latest production batch of the small grade; acquiring a small-grade water drawing amount change reference coefficient according to the temporary water drawing amount value of the small grade of the penultimate production batch and the temporary water drawing amount value of the small grade of the latest production batch of the small grade; averaging the working condition change reference coefficient and the small-grade water drawing quantity change reference coefficient to obtain a water drawing quantity change proportion coefficient; and multiplying the preset small-grade water drawing quantity parameter by the obtained water drawing quantity change proportion coefficient to obtain the water drawing quantity working point parameter of each small grade in the current batch.
Specifically, the difference between the temporary value of the water drawing amount of the conventional grade of the penultimate production batch and the temporary value of the water drawing amount of the conventional grade of the nearest production batch of the conventional grade is calculated, and a working condition change reference coefficient corresponding to the difference between the two is obtained by searching in a database according to the difference between the two.
Specifically, the difference between the temporary value of the water drawing amount of the small grade of the penultimate production batch and the temporary value of the water drawing amount of the small grade of the nearest production batch of the small grade is calculated, and the small grade water drawing amount change reference coefficient corresponding to the difference between the two is searched and obtained in the database according to the difference between the two.
The fourth correction module 43 is configured to correct the preloaded dehydration coefficients of each small grade according to the correction mode of the preloaded dehydration coefficients.
Specifically, the fourth correction module 43 is configured to collect and count the outlet moisture value after the oven drum is shifted to the starting stage, so as to obtain a maximum value of the outlet moisture value; calculating the difference value between the preset outlet moisture value and the maximum value of the outlet moisture value obtained after the starting stage; searching a correction coefficient of the pre-loaded dehydration coefficient corresponding to the difference value in a database of the pre-loaded dehydration coefficient; writing the correction coefficient of the preloaded dehydration coefficient corresponding to each small mark into a corresponding preloaded dehydration coefficient data stack; carrying out weighted average calculation on the correction coefficients of each batch of each small grade in the pre-loaded dehydration coefficient data stack to obtain the weighted average of the correction coefficients of each small grade; and calculating the pre-loaded dehydration coefficient of each small grade according to the weighted average value of the correction coefficients.
The fifth correcting module 45 is configured to correct the water-drawing rated working points of the conventional brands according to the correcting mode of the water-drawing rated working points.
Specifically, the fifth correction module 45 is configured to collect data of the temperature of the cylinder wall of the cut tobacco drying cylinder and the water drawing amount process after entering the production process until the cut tobacco drying cylinder enters the material tail state; calculating the average value of the temperature of the cylinder wall and the average value of the water drawing amount according to the collected data of the temperature of the cylinder wall and the water drawing amount process of the wire drying cylinder; calculating the water drawing amount based on the rated cylinder wall temperature according to the average value of the water drawing amount; writing the water drawing amount with the rated cylinder wall temperature as the reference into a corresponding water drawing amount data stack according to each conventional mark; extracting the water drawing amount of each batch of each conventional grade by taking the rated cylinder wall temperature as the reference from the water drawing amount data stack, and carrying out weighted average calculation on the water drawing amount of each conventional grade to obtain the temporary storage value of the water drawing amount of each conventional grade.
The sixth modification module 46 is configured to modify the preloaded dehydration coefficients of each conventional grade according to a modification mode of the preloaded dehydration coefficients.
Specifically, the sixth modification module 46 is configured to collect and count the outlet moisture value after the oven drum is shifted to the starting stage, so as to obtain a maximum value of the outlet moisture value; calculating the difference value between the preset outlet moisture value and the maximum value of the outlet moisture value obtained after the starting stage; searching a correction coefficient of the pre-loaded dehydration coefficient corresponding to the difference value in a database of the pre-loaded dehydration coefficient; writing the correction coefficient of the preloaded dehydration coefficient into a corresponding preloaded dehydration coefficient data stack corresponding to each conventional grade; carrying out weighted average calculation on the correction coefficients of each batch of each conventional grade in the pre-loaded dehydration coefficient data stack to obtain the weighted average of the correction coefficients of each conventional grade; and calculating the pre-loaded dehydration coefficient of each conventional grade according to the weighted average value of the correction coefficients.
It should be noted that the division of the modules of the above systems 3 and 4 is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling software by the processing element, and part of the modules can be realized in the form of hardware. For example, the x module may be a processing element that is set up separately, or may be implemented by being integrated in a chip of the apparatus, or may be stored in a memory of the apparatus in the form of program code, and the function of the x module may be called and executed by a processing element of the apparatus. Other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.
For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), etc. For another example, when one of the above modules is implemented in the form of a processing element scheduler code, the processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling program code. For another example, these modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
EXAMPLE III
The present embodiment provides an apparatus, comprising: a processor, a memory, a transceiver, a communication interface, and a system bus; the memory and the communication interface are connected with the processor and the transceiver through the system bus and are used for mutually communicating, the memory is used for storing a computer program, the communication interface is used for communicating with other equipment, and the processor and the transceiver are used for running the computer program to enable the x device to execute the steps of the self-correction method of the parameters in the embodiment I and/or execute the steps of the self-correction method of the small-brand parameters in the embodiment I.
The above-mentioned system bus may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The system bus may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus. The communication interface is used for realizing communication between the database access device and other equipment (such as a client, a read-write library and a read-only library). The memory may include a Random Access Memory (RAM), and may further include a non-volatile memory (non-volatile memory), such as at least one disk memory.
The processor may be a general-purpose processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the integrated circuit may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components.
In summary, the parameter self-correction method/system of the present invention is deployed in a workshop on a set of leaf-shred drying equipment, i.e. a roller-type thin-plate shred dryer KLD. After a cut tobacco drying water stub bar parameter self-correction mode is used, one process quality, namely the process data of the cut tobacco drying water content, is improved, the characteristic values of two stub bar water, namely overshoot and stability time, are improved, and the received good control effect and feedback are achieved. The small-grade parameter self-correction method/system pair enables the control mode to be suitable for the working condition of hardware change of the cut-tobacco drier and gives consideration to the characteristics of small grades, and improves stub bar characteristic indexes and process capability indexes of conventional grade and small-grade task production. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. A parameter self-correction method is characterized by being used for correcting a water drawing rated working point and/or a pre-loading dehydration coefficient in cut tobacco drying moisture content stub bar control parameters; the self-correction method of the parameters comprises the following steps:
receiving a specified water drawing rated working point and/or a preloaded dehydration coefficient as a self-correcting target parameter;
correcting the water drawing amount rated working point of each cigarette production brand according to the correction mode of the water drawing amount rated working point; wherein, the step of correcting the rated working point of the water drawing amount of each cigarette production brand comprises the following steps:
after entering the production process, collecting the data of the temperature of the cylinder wall of the silk drying cylinder and the water drawing amount until the silk drying cylinder enters a material tail state;
calculating the average value of the temperature of the wall of the wire drying cylinder and the average value of the water drawing amount according to the collected data of the wall temperature and the water drawing amount of the wire drying cylinder;
calculating the water drawing amount based on the rated cylinder wall temperature according to the average value of the water drawing amount;
writing the water drawing amount with the rated cylinder wall temperature as the reference into a corresponding water drawing amount data stack according to the cigarette production brand;
extracting the water drawing amount of each batch of each cigarette production grade by taking the rated cylinder wall temperature as the reference from the water drawing amount data stack, and performing weighted average calculation on the water drawing amount to obtain the correction value and/or the rated working point of the water drawing amount of each cigarette production grade
Correcting the pre-loaded dehydration coefficient of each cigarette production grade according to the correction mode of the pre-loaded dehydration coefficient; wherein, the step of correcting the pre-loaded dehydration coefficient of each cigarette production grade comprises the following steps:
after the silk drying cylinder is shifted to a starting stage, acquiring and counting an outlet moisture value to obtain the maximum value of the outlet moisture value in the stage until the silk drying cylinder is shifted to a production stage;
calculating the difference value between the preset outlet moisture value and the maximum value of the outlet moisture value obtained after the starting stage;
searching a correction coefficient of the pre-loaded dehydration coefficient corresponding to the difference value in a database of the pre-loaded dehydration coefficient;
writing the correction coefficient of the preloaded dehydration coefficient into a corresponding preloaded dehydration coefficient data stack corresponding to each cigarette production brand;
carrying out weighted average calculation on the correction coefficients of each batch of each cigarette production grade in the pre-loaded dehydration coefficient data stack to obtain the weighted average of the correction coefficients of each cigarette production grade;
calculating the pre-loaded dehydration coefficient of each cigarette production grade according to the weighted average value of the correction coefficients;
wherein, each cigarette production grade comprises a small grade and a conventional grade.
2. The method of self-correction of a parameter according to claim 1,
the average value of the wall temperature of the wire drying cylinder is equal to the sum of the wall temperatures of the wire drying cylinder collected every preset collection period after the wire drying cylinder enters the production process, and the collection times are divided;
the average value of the water drawing amount is equal to the sum of the water drawing amount process data collected every preset collection period after the production process is started, and the collection times are divided.
3. The method of self-correction of a parameter according to claim 2,
the water drawing amount with the rated cylinder wall temperature as the reference is equal to the average water drawing amount (the average cylinder wall temperature of the wire drying cylinder-the rated cylinder wall temperature)/the drying coefficient in the recipe parameters of the wire drying machine.
4. The method of claim 3, wherein the temporary value of water withdrawal for a cigarette production brand is the first batch of water withdrawal based on the rated cylinder wall temperature multiplied by its corresponding weight value + … + the second batch of water withdrawal based on the rated cylinder wall temperature multiplied by its corresponding weight value + … + the Nth batch of water withdrawal based on the rated cylinder wall temperature multiplied by its corresponding weight value.
5. The method of self-correction of a parameter according to claim 1,
the weighted average value of the correction coefficients of each cigarette production brand is the correction coefficient of the first batch multiplied by the corresponding weight value + the correction coefficient of the second batch multiplied by the corresponding weight value + … + the correction coefficient of the Mth batch multiplied by the corresponding weight value;
the pre-loading dehydration coefficient of each cigarette production grade is the weighted average value of the correction coefficients of each cigarette production grade multiplied by the pre-loading dehydration coefficient to be corrected.
6. A parameter self-correcting system is characterized by being used for correcting a water drawing rated working point and/or a pre-loading dehydration coefficient in cut tobacco drying moisture content stub bar control parameters; the self-correcting system of the parameters comprises:
the receiving module is used for receiving the specified water drawing rated working point and/or the pre-loaded dehydration coefficient as a self-correcting target parameter;
the first correction module is used for correcting the water drawing quantity rated working point of each cigarette production brand according to the correction mode of the water drawing quantity rated working point; the first correction module collects the data of the temperature of the cylinder wall of the silk drying cylinder and the water drawing amount after entering the production process until the silk drying cylinder enters a material tail state; calculating the average value of the temperature of the wall of the wire drying cylinder and the average value of the water drawing amount according to the collected data of the wall temperature and the water drawing amount of the wire drying cylinder; calculating the water drawing amount based on the rated cylinder wall temperature according to the average value of the water drawing amount; writing the water drawing amount with the rated cylinder wall temperature as the reference into a corresponding water drawing amount data stack according to the cigarette production brand; extracting the water drawing amount of each batch of each cigarette production grade by taking the rated cylinder wall temperature as the reference from the water drawing amount data stack, and performing weighted average calculation on the water drawing amount to obtain the correction value and/or the rated working point of the water drawing amount of each cigarette production grade
The second correction module is used for correcting the preloaded dehydration coefficient of each cigarette production brand according to the correction mode of the preloaded dehydration coefficient; the second correction module collects and counts the outlet moisture value after the cut tobacco drying cylinder is shifted to the starting stage so as to obtain the maximum value of the outlet moisture value in the stage until the cut tobacco drying cylinder is shifted to the production stage; calculating the difference value between the preset outlet moisture value and the maximum value of the outlet moisture value obtained after the starting stage; searching a correction coefficient of the pre-loaded dehydration coefficient corresponding to the difference value in a database of the pre-loaded dehydration coefficient; writing the correction coefficient of the preloaded dehydration coefficient into a corresponding preloaded dehydration coefficient data stack corresponding to each cigarette production brand; carrying out weighted average calculation on the correction coefficients of each batch of each cigarette production grade in the pre-loaded dehydration coefficient data stack to obtain the weighted average of the correction coefficients of each cigarette production grade; calculating the pre-loaded dehydration coefficient of each cigarette production grade according to the weighted average value of the correction coefficients;
wherein, each cigarette production grade comprises a small grade and a conventional grade.
7. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out a method for self-correction of a parameter as claimed in any one of claims 1 to 4.
8. A self-correcting apparatus, comprising: a processor and a memory;
the memory is configured to store a computer program, and the processor is configured to execute the computer program stored by the memory to cause the self-correction apparatus to perform the self-correction method of the parameter according to any one of claims 1 to 4.
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| CN108771281A (en) * | 2018-08-24 | 2018-11-09 | 山东中烟工业有限责任公司 | It is a kind of to reduce the method and system fluctuated between drum-type cut-tobacco drier barrel temperature batch |
| CN110558598B (en) * | 2019-08-14 | 2021-08-20 | 长沙学院 | Data-driven FNN-ARX modeling method for tobacco shred drying and head drying process |
| CN112220094B (en) * | 2020-09-28 | 2022-09-06 | 福建中烟工业有限责任公司 | Method and device for drying tobacco shreds with constant processing strength and method and system for manufacturing tobacco shreds |
| CN115381128B (en) * | 2022-08-26 | 2023-07-21 | 云南昆船烟草设备有限公司 | Control method for outlet moisture of tobacco leaf roller equipment and readable storage medium thereof |
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