A method for tobacco blending and flavoring control

Abstract

The present application relates to the tobacco production technical field, more specifically, a kind of tobacco blending flavoring control method, comprising the following specific steps: S1: set the first control system theoretical flavoring flow and the theoretical flavoring flow of second control system at t time;S2: according to the first control system theoretical flavoring flow at t time, calculate the flavoring flow deviation of first control system at t time, while according to the flavoring cumulative amount deviation of first control system at t time, adjust flavoring proportion coefficient;S3: according to the flavoring proportion coefficient after adjustment, set the first control system theoretical flavoring flow at t+1 time;S4: according to the flavoring cumulative amount deviation within T time, calculate flavoring instantaneous flow deviation;S5: adjust the theoretical flavoring flow of second control system at t+1 time;S6: calculate the total theoretical flavoring flow at t+1 time.The present application aims at overcoming the shortcomings of prior art, provides a kind of tobacco blending flavoring control method, can regulate and control flavoring amount, can improve the uniformity and consistency of batch flavoring.

Description

TECHNICAL FIELD

[0001] The present application relates to the tobacco production technical field, more particularly, to a tobacco blending and flavoring control method. BACKGROUND

[0002] Blending and flavoring is an important link in the process of cigarette production. In the process of cigarette production and processing, tobacco online proportion blending is a process of accurately and uniformly blending stem cut tobacco, expanded cut tobacco and the like into dry tobacco according to product formula design requirements, which is a key process to realize uniformity of contents of each component tobacco. The blending uniformity directly affects the stability of the internal quality of the cigarette product and is the basis for ensuring the sensory quality of the cigarette product. Flavoring is to accurately and uniformly apply the prepared flavoring solution to the product according to product design requirements to make up for insufficient aroma, enhance aroma and make the aroma of the product more rich and sufficient. In recent years, after continuous upgrading and modification of each cigarette production enterprise, the overall flavoring accuracy can be basically controlled within 0.5%. However, the existing tobacco flavoring system is mainly based on the total amount control of the belt scale measurement data. In fact, due to the uneven phenomenon of the conveying amount of tobacco in the conveying process, batch flavoring is prone to be uneven, which affects the consistency of the taste of the cigarette.

[0003] In the production process, the actual flavoring flow is detected by a flavoring flowmeter, compared with the set flavoring flow, the speed of the flavoring pump is adjusted by a frequency converter to achieve the purpose of controlling the flavoring accuracy. However, the stability of flavoring mainly depends on the stability of the instantaneous flow of the material. In actual production, the instantaneous flow of the material fluctuates, especially the running speed of the belt scale is inconsistent with the running speed of the mixing belt, which causes uneven distribution of different materials after blending, and the actual conveying flow fluctuates greatly. Although the overall flavoring accuracy of the system meets the requirements, the uniformity and consistency of batch flavoring cannot be guaranteed. SUMMARY

[0004] The present application aims at overcoming the deficiencies of the prior art and providing a tobacco blending and flavoring control method, which can control the amount of flavoring and improve the uniformity and consistency of batch flavoring.

[0005] To solve the above technical problems, the technical scheme adopted by the present application is as follows:

[0006] A tobacco blending and flavoring control method is provided, which comprises the following specific steps:

[0007] S1: setting a first control system theoretical flavoring flow Qi1(t) at time t and a second control system theoretical flavoring flow Qi2(t) at time t;

[0008] S2: according to the first control system theoretical perfuming flow at time t, calculate the first control system perfuming flow deviation δ at time t, and adjust the perfuming proportion coefficient s according to the perfuming cumulative amount deviation e(t) of the first control system at time t;

[0009] S3: set the first control system theoretical perfuming flow Qi1(t+1) at time t+1 according to the adjusted perfuming proportion coefficient s';

[0010] S4: calculate the perfuming instantaneous flow deviation λ according to the perfuming cumulative amount deviation α in T time, wherein T is the time interval between time t+1 and time t;

[0011] S5: adjust the theoretical perfuming flow Qi2(t+1) of the second control system at time t+1, and the calculation formula is as follows:

[0012] Qi2(t+1)=Qi2(t)+δ+λ

[0013] Wherein, Qi2(t) is the theoretical perfuming flow of the second control system, δ is the perfuming flow deviation of the first control system at time t, and λ is the perfuming instantaneous flow deviation;

[0014] S6: calculate the total theoretical perfuming flow Qi(t+1) at time t+1, and the calculation formula is as follows:

[0015] Qi(t+1)=Qi1(t+1)+Qi2(t+1)

[0016] Wherein, Qi1(t+1) is the theoretical perfuming flow of the first control system at time t+1, and Qi2(t+1) is the theoretical perfuming flow of the second control system at time t+1.

[0017] In the application, the whole perfuming operation is completed by the first control system and the second control system, the two control systems are similar in structure, independent of each other, and form a double-stage series mode. The first control system as the main control system has a larger weight in the perfuming operation, and the second control system as the auxiliary control system has a smaller weight in the perfuming operation. The second control system can track the working state of the first control system and quickly respond to the system error of the first control system in the steady state, so that the fluctuation range of the adjustment is narrowed, and the purpose of fast and accurate adjustment is achieved. The two systems are independent of each other and complement each other, and complete the whole perfuming operation together.

[0018] Further, the calculation formula of the first control system theoretical perfuming flow Qi1(t) at time t in step S1 is as follows:

[0019] Qi1(t)=Qd×s×k

[0020] Wherein, Qd is the theoretical total tobacco flow, s is a preset flavoring proportion coefficient, and k is a weight coefficient.

[0021] The calculation formula of the first control system theoretical flavoring flow Qi1(t+1) at the t+1 moment in the step S3 is as follows:

[0022] Qi1(t+1)=Qd×s’×k

[0023] Wherein, Qd is the theoretical total tobacco flow, s’ is an adjusted flavoring proportion coefficient, and k is a weight coefficient.

[0024] Further, the theoretical total tobacco flow Qd is the sum of the flows of the main tobacco, the expanded tobacco, and the stem tobacco, and the specific calculation formula is as follows:

[0025] Qd=Qz+Qp+Qg

[0026] Wherein, Qz is the flow of the main tobacco at the t moment, Qp is the flow of the expanded tobacco at the t moment, and Qg is the flow of the stem tobacco at the t moment.

[0027] Further, the calculation formula of the theoretical flavoring flow Qi2(t) of the second control system at the t moment is as follows:

[0028] Qi2(t)=(Qd-Qd(t)×k)×s

[0029] Wherein, Qd is the theoretical total tobacco flow, Qd(t) is the total tobacco flow at the t moment, s is a preset flavoring proportion coefficient, and k is a weight coefficient.

[0030] Further, the acquisition step of the flavoring cumulative amount deviation e(t) of the first control system at the t moment is as follows:

[0031] S21: acquire the theoretical total tobacco cumulative amount Gd, calculate the first control system theoretical flavoring cumulative amount Gi1, and the calculation formula is as follows:

[0032] Gi1=Gd×s×k

[0033] Wherein, Gd is the theoretical total tobacco cumulative amount, s is a preset flavoring proportion coefficient, and k is a weight coefficient.

[0034] S22: acquire the flavoring cumulative amount Gi(t) of the first control system at the t moment, calculate the flavoring cumulative amount deviation e(t) of the first control system at the t moment, and the calculation formula is as follows:

[0035] e(t)=Gi(t)-Gi

[0036] Wherein, Gi(t) is the flavoring cumulative amount of the first control system at the t moment, and Gi is the first control system theoretical flavoring cumulative amount.

[0037] Further, the calculation formula of the fragrance flow deviation δ of the first control system at time t in step S2 is as follows:

[0038] δ = Qil(t) - Qil

[0039] Wherein, Qil(t) is the fragrance flow of the first control system at time t, and Qil is the theoretical fragrance flow of the first control system.

[0040] Further, the obtaining step of the fragrance instantaneous flow deviation λ in step S4 is as follows:

[0041] λ = α / T

[0042] Wherein, α is the cumulative fragrance deviation in T time, and T is the time interval between t+1 time and t time.

[0043] Further, the calculation formula of the cumulative fragrance deviation α in T time of the first control system in step S4 is as follows:

[0044] α = △Gd×s - △Gil

[0045] Wherein, △Gd is the total tobacco cumulative amount increment of the first control system in T time, △Gil is the cumulative increment of the fragrance flow of the first control system in T time, and s is a preset fragrance proportion coefficient.

[0046] Further, the calculation formula of the total tobacco cumulative amount increment △Gd of the first control system in T time is as follows:

[0047] △Gd = Gd(t+1) - Gd(t)

[0048] Wherein, Gd(t+1) is the total tobacco cumulative amount at t+1 time, and Gd(t) is the total tobacco cumulative amount at t time.

[0049] The calculation formula of the cumulative increment △Gil of the fragrance flow of the first control system in T time is as follows:

[0050] △Gil = Gil(t+1) - Gil(t)

[0051] Wherein, Gil(t+1) is the theoretical fragrance cumulative amount of the first control system at t+1 time, and Gil(t) is the theoretical fragrance cumulative amount of the first control system at t time.

[0052] Further, in step S2, after obtaining the fragrance cumulative amount deviation e(t) of the first control system at time t, it is compared with the preset deviation threshold, and the specific steps are as follows:

[0053] Sa: define the deviation threshold M1, M2, and M1>M2>0, and define the adjustment compensation value Kp1, Kp2, Kp3, and Kp1>Kp2>Kp3;

[0054] Sb: compare If M1 , the controller outputs according to the adjusted compensation value Kp1, and the process ends; if , the process proceeds to step Sc;

[0055] Sc: compare with 0, if , the process proceeds to step Sd; if ≤ 0, the original output state is maintained, the controller outputs according to the adjusted value 0, and the process ends;

[0056] Sd: compare |e( )| with M2, if |e( )|≥ M2, the controller outputs according to the adjusted value Kp2, and the process ends; if |e( )|< M2, the controller outputs according to the adjusted value Kp3, and the process ends.

[0057] Compared with the prior art, the present application has the following beneficial effects:

[0058] The entire perfuming operation is completed by the first control system and the second control system, the two perfuming systems are similar in structure and independent of each other, forming a double-stage series mode. The double-stage series perfuming system comprises a perfuming tank, a first control system and a second control system. The first control system and the second control system are each provided with a discharge valve, a perfuming pump, a mass flowmeter and a perfuming valve. The perfuming pump of the first control system has a larger range than the perfuming pump of the second control system, and is controlled by a servo-controlled motor to improve the control precision. The first control system calculates the perfuming instantaneous flow set value based on the instantaneous value of the sum of the three blending scales, and the second control system is mainly used for adjusting the perfuming flow based on the real-time flow of the total scale of the cut tobacco, tracking the working state of the first control system, and quickly responding to the system error of the first control system when it is in a steady state, so as to narrow the fluctuation range of the adjustment and achieve the purpose of fast and accurate adjustment. BRIEF DESCRIPTION OF DRAWINGS

[0059] Figure 1 It is a flow chart of the cut tobacco blending and perfuming control method of the present application. DETAILED DESCRIPTION

[0060] The present application will be further described below in conjunction with specific embodiments. The accompanying drawings are only used for exemplary description, and represent only schematic diagrams, not physical diagrams, and should not be understood as a limitation on the present patent; in order to better illustrate the embodiments of the present application, some components in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0061] In addition, the terms "first", "second", etc. are used only for descriptive purposes and do not connote or imply relative importance or an ordering between or among the indicated technical features. Thus, a feature defined with "first", "second", etc. can include at least one of the feature, explicitly or implicitly. In the description of the present application, the meaning of "a plurality" is at least two, for example, two, three, etc., unless otherwise specifically defined.

[0062] In the description of the present application, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples, without contradiction.

[0063] Embodiment 1

[0064] As Figure 1 The first embodiment of the tobacco blending and flavoring control method of the present application is shown, which comprises the following specific steps:

[0065] S1: setting the theoretical flavoring flow rate QI1(t) of the first control system at time t, and the theoretical flavoring flow rate QI2(t) of the second control system at time t;

[0066] The theoretical total tobacco flow rate Qd is the sum of the flow rates of the main tobacco, expanded tobacco and stem tobacco, and the specific calculation formula is as follows:

[0067] Qd=Qz+Qp+Qg

[0068] Wherein, Qz is the flow rate of the main tobacco at time t, Qp is the flow rate of the expanded tobacco at time t, and Qg is the flow rate of the stem tobacco at time t;

[0069] The electronic belt scale of blending process is divided into two types of control type and blending type. The cut tobacco scale is control type (referred to as master scale), which is used to balance the weight of cut tobacco to make it pass through at a set flow rate; the stem scale, expanded tobacco scale and residual tobacco scale are blending type (referred to as slave scale), which is used to track the flow rate of master scale in real time and dynamically control the flow rate of various blending materials at a certain proportion. In production, according to different cigarette formulas, the instantaneous flow rate of the cut tobacco master scale is taken as the basis, and other materials are blended into the cut tobacco uniformly through their respective slave scales at different set proportions. Since the materials are bulk materials, the instantaneous flow rate of the master scale fluctuates to some extent, so that the set value of the slave scale also fluctuates accordingly, affecting the uniformity of blending.

[0070] To eliminate the error influence caused by flow rate fluctuation, an error compensation algorithm is introduced in the flow rate setting of the slave scale, that is, a reasonable correction value is given to the set flow rate according to the real-time cumulative value error, so that the next cumulative sampling data obtains compensation in advance, thereby controlling the cumulative error within the minimum range.

[0071] The basic principle of flavoring control is to obtain the theoretical total tobacco flow rate from the sum of the three scales of master cut tobacco, expanded tobacco and stem tobacco before flavoring, and then calculate the required flavoring flow rate, and then open the related equipment according to this flow rate value by the first control system to apply the flavoring solution from the nozzle to the tobacco in the form of mist. In the production process, the real-time flavoring flow rate is detected by the flavoring flow meter and compared with the theoretical flavoring flow rate, and the flavoring pump speed is adjusted by the frequency converter to achieve the purpose of controlling the flavoring accuracy. However, the stability of flavoring mainly depends on the stability of the instantaneous flow rate of the material; and in actual production, the instantaneous flow rate of the material fluctuates, especially the running speed of the belt scale is not consistent with the running speed of the mixing belt, which leads to uneven distribution of materials after blending of different materials, and the actual conveying flow rate fluctuates greatly. Although the overall accuracy of the system meets the requirements, the uniformity and consistency of flavoring within the batch cannot be guaranteed. Therefore, the flavoring amount needs to be adjusted by real-time deviation to improve the uniformity and consistency of flavoring.

[0072] The calculation formula of the first control system theoretical flavoring flow rate Qi1(t) at time t is as follows:

[0073] Qi1(t)=Qd×s×k

[0074] Wherein, Qd is the theoretical total tobacco flow rate, s is the preset flavoring proportion coefficient, and k is the weight coefficient;

[0075] The calculation formula of the second control system theoretical flavoring flow rate Qi2(t) at time t is as follows:

[0076] Qi2(t)=(Qd-Qd(t)×k)×s

[0077] Wherein, Qd is the theoretical total tobacco flow, Qd(t) is the total tobacco flow at t time, s is a preset flavoring proportion coefficient, and k is a weight coefficient.

[0078] The theoretical total tobacco flow Qd is obtained by adding the values of the main tobacco, expanded tobacco and stem tobacco at t time, and the total tobacco flow Qd(t) at t time is obtained by the main tobacco belt scale. Since the main tobacco, expanded tobacco and stem tobacco are added together to obtain the total tobacco, the interval between the material conveying on the production line will cause a time difference, and the unevenness in the material blending process can also cause a deviation between the theoretical calculation value and the real-time value. Therefore, the deviation value at the previous time is obtained to adjust the theoretical output value at the next time, thereby continuously improving the uniformity of blending.

[0079] S2: According to the first control system theoretical flavoring flow at t time, the first control system flavoring flow deviation δ at t time is calculated, and the flavoring proportion coefficient s is adjusted according to the flavoring cumulative amount deviation e(t) of the first control system at t time;

[0080] S21: Obtain the theoretical total tobacco cumulative amount Gd, calculate the first control system theoretical flavoring cumulative amount Gi1, and the calculation formula is as follows:

[0081] Gi1=Gd×s×k

[0082] Wherein, Gd is the theoretical total tobacco cumulative amount, s is a preset flavoring proportion coefficient, and k is a weight coefficient;

[0083] S22: Obtain the flavoring cumulative amount Gi(t) of the first control system at t time, calculate the flavoring cumulative amount deviation e(t) of the first control system at t time, and the calculation formula is as follows:

[0084] e(t)=Gi(t)-Gi

[0085] Wherein, Gi(t) is the flavoring cumulative amount of the first control system at t time, and Gi is the first control system theoretical flavoring cumulative amount;

[0086] The calculation formula of the first control system flavoring flow deviation δ at t time is as follows:

[0087] δ= Qi1(t)-Qi1

[0088] Wherein, Qi1(t) is the flavoring flow of the first control system at t time, and Qi1 is the first control system theoretical flavoring flow;

[0089] S3: According to the adjusted flavoring proportion coefficient s', the first control system theoretical flavoring flow Qi1(t+1) at t+1 time is set; if e(t)≥0, s' is reduced; if e(t)<0, s' is increased;

[0090] The calculation formula is as follows:

[0091] Qi1(t+1)=Qd×s’×k

[0092] Wherein, Qd is the theoretical total tobacco flow, s' is the adjusted flavoring proportion coefficient, and k is the weight coefficient;

[0093] S4: calculating the flavoring instantaneous flow deviation λ according to the flavoring cumulative amount deviation α within T time, wherein T is the time interval between t+1 time and t time;

[0094] S41: the calculation formula of the first control system total tobacco cumulative amount increment △Gd within T time is as follows:

[0095] △Gd=Gd(t+1)-Gd(t)

[0096] Wherein, Gd(t+1) is the total tobacco cumulative amount at t+1 time, and Gd(t) is the total tobacco cumulative amount at t time;

[0097] The calculation formula of the first control system flavoring flow cumulative increment △Gi1 within T time is as follows:

[0098] △Gi1=Gi1(t+1)-Gi1(t)

[0099] Wherein, Gi1(t+1) is the first control system theoretical flavoring cumulative amount at t+1 time, and Gi1(t) is the first control system theoretical flavoring cumulative amount at t time;

[0100] S42: the calculation formula of the flavoring cumulative amount deviation α within T time is as follows:

[0101] α=△Gd×s-△Gi1

[0102] Wherein, △Gd is the first control system total tobacco cumulative amount increment within T time, △Gi1 is the first control system flavoring flow cumulative increment within T time, and s is the preset flavoring proportion coefficient

[0103] The obtaining steps of the flavoring instantaneous flow deviation λ are as follows:

[0104] λ=α / T

[0105] Wherein, α is the flavoring cumulative amount deviation within T time, and T is the time interval between t+1 time and t time;

[0106] S5: adjusting the theoretical flavoring flow Qi2(t+1) of the second control system at t+1 time, and the calculation formula is as follows:

[0107] Qi2(t+1)=Qi2(t)+δ+λ

[0108] Wherein, Qi2(t) is the theoretical flavoring flow of the second control system, δ is the flavoring flow deviation of the first control system at t, and λ is the flavoring instantaneous flow deviation.

[0109] S6: Calculate the total theoretical flavoring flow Qi(t+1) at t+1, and the calculation formula is as follows:

[0110] Qi(t+1)=Qi1(t+1)+Qi2(t+1)

[0111] Wherein, Qi1(t+1) is the theoretical flavoring flow of the first control system at t+1, and Qi2(t+1) is the theoretical flavoring flow of the second control system at t+1.

[0112] Embodiment 2

[0113] The following is a second embodiment of a tobacco blending and flavoring control method of the application, which is similar to embodiment 1, and the difference is that in step S2, after obtaining the flavoring cumulative deviation e(t) of the first control system at t, it is compared with the preset deviation threshold value, and the specific steps are as follows:

[0114] Sa: Define the deviation threshold values M1 and M2, and M1>M2>0, and define the adjustment compensation values Kp1, Kp2 and Kp3, and Kp1>Kp2>Kp3;

[0115] Sb: Compare with M1, if , the controller is output according to the adjustment compensation value Kp1, and step Se is entered; if , step Sc is entered;

[0116] Sc: Compare with 0, if , step Sd is entered; if ≤0, the original output state is maintained, the controller is output according to the adjustment value 0, and step Se is entered;

[0117] Sd: Compare |e(t)| | with M2, if |e(t)| |≥M2, the controller is output according to the adjustment value Kp2, and step Se is entered; if |e(t)| |<M2, the adjustment controller is output according to the adjustment value Kp3, and step Se is entered;

[0118] Se: The flow is ended.

[0119] When all the flow is stacked to the flavoring cylinder, the first control system and the second control system are opened at the same time, the first control system carries out flavoring PID control according to the theoretical total tobacco flow Qd, an expert PID control mode is established, that is, the flavoring cumulative deviation e(t) of the first control system at time t is calculated, the error values in the two sampling periods before and after calculation are calculated , e(t+1) is the deviation value at time t+1, e(t) is the deviation value at time t, the deviation threshold values M1 and M2 are set, M1>M2>0, and the deviation e(t) is compared with the deviation threshold value.

[0120] When , it indicates that the absolute value of the cumulative deviation is very large, at this time, the adjusting controller outputs according to the maximum adjusting compensation value Kp1 to rapidly adjust the deviation, so that the absolute value of the deviation decreases at the maximum speed;

[0121] When , the deviation change trend is judged at this time, for example , it indicates that the deviation changes in the direction of increasing the absolute value of the deviation, at this time, if |e( )|≥M2, it indicates that the deviation is also large, the controller outputs according to the larger adjusting compensation value Kp2 to reverse the change of the absolute value of the deviation in the direction of decreasing, and rapidly reduce the absolute value of the deviation; if |e( )|<M2, it indicates that although the deviation changes in the direction of increasing the absolute value, the absolute value of the deviation itself is not very large, the controller outputs according to the smaller adjusting compensation value Kp3, only to reverse the change trend of the deviation, so that the change trend of the deviation is in the direction of decreasing the absolute value; when e( )Δe( )<0, Δe( )Δe( -1)>0 or e( )=0, it indicates that the absolute value of the deviation changes in the direction of decreasing, or has reached a balanced state. At this time, the output of the controller is kept unchanged, and no adjusting compensation is needed, so the adjusting compensation value of the controller is 0. Through the above method, the PID parameters are modified to achieve the purpose of rapid adjustment. The purpose of improving the instantaneous precision and overall precision of flavoring is achieved.

[0122] Example 3

[0123] The following is a third embodiment of a tobacco blending and flavoring control method of the application, which is similar to the first embodiment, and the difference is that the weight coefficient k is defined as 80% to 95%, preferably 90%, which can fully play the main flavoring control role of the first control system.

[0124] Obviously, the above embodiments of the present application are merely exemplary but not intended to limit the embodiments of the present application. Based on the above description, any other variations or changes can be made by those skilled in the art without departing from the spirit and principles of the present application. It is not necessary to list all the embodiments here. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall fall within the scope of the claims of the present application.

Claims

1. A method for controlling the blending and flavoring of tobacco shreds, characterized in that, The specific steps include the following: S1: Set the theoretical incense flow rate Qi1(t) of the first control system at time t, and the theoretical incense flow rate Qi2(t) of the second control system at time t; The formula for calculating the theoretical incense application flow rate Qi1(t) of the first control system at time t in step S1 is as follows: Qi1(t) = Qd × s × k Where Qd is the theoretical total tobacco flow rate, s is the preset flavoring ratio coefficient, and k is the weighting coefficient; S2: Calculate the fragrance flow deviation δ of the first control system at time t based on the theoretical fragrance flow rate of the first control system at time t, and adjust the fragrance ratio coefficient s based on the cumulative fragrance deviation e(t) of the first control system at time t. In step S2, after obtaining the cumulative fragrance addition deviation e(t) of the first control system at time t, it is compared with a preset deviation threshold. The specific steps are as follows: Sa: Define deviation thresholds M1 and M2, where M1 > M2 > 0; define adjustment compensation values ​​Kp1, Kp2, and Kp3, where Kp1 > Kp2 > Kp3. Sb: Comparison With M1, if If so, the controller outputs according to the adjustment compensation value Kp1, and proceeds to step Se; Then proceed to step Sc; Sc: Comparison With 0, if If so, proceed to step Sd; if If the value is ≤0, then maintain the original output state and make the controller output according to the adjustment value of 0, and proceed to step Se; Sd: Compare |e( )| with M2. If |e( )| ≥ M2, make the controller output according to the adjustment value Kp2 and enter step Se; if |e( )| < M2, make the adjustment controller output according to the adjustment value Kp3 and enter step Se; Se: Process ended; S3: Set the theoretical fragrance addition flow rate Qi1(t+1) of the first control system at time t+1 according to the adjusted fragrance addition ratio coefficient s'; The formula for calculating the theoretical incense application flow rate Qi1(t+1) of the first control system at time t+1 in step S3 is as follows: Qi1(t+1)=Qd×s'×k Where Qd is the theoretical total tobacco flow rate, s' is the adjusted flavoring ratio coefficient, and k is the weighting coefficient; S4: Calculate the instantaneous flow rate deviation λ of incense based on the cumulative deviation α of incense added within time T, where T is the time interval between time t+1 and time t; S5: Adjust the theoretical incense-adding flow rate Qi2(t+1) of the second control system at time t+1. The calculation formula is as follows: Qi2(t+1)=Qi2(t)+δ+λ Where Qi2(t) is the theoretical fragrance flow rate of the second control system, δ is the fragrance flow rate deviation of the first control system at time t, and λ is the instantaneous fragrance flow rate deviation. S6: Calculate the total theoretical incense flow rate Qi(t+1) at time t+1. The calculation formula is as follows: Qi(t+1) = Qi1(t+1) + Qi2(t+1) Where Qi1(t+1) is the theoretical incense flow rate of the first control system at time t+1, and Qi2(t+1) is the theoretical incense flow rate of the second control system at time t+1.

2. The method for controlling the blending and flavoring of tobacco shreds according to claim 1, characterized in that, The theoretical total tobacco flow rate Qd is the sum of the flow rates of main tobacco, expanded tobacco, and stems. The specific calculation formula is as follows: Qd = Qz + Qp + Qg Where Qz is the flow rate of the main tobacco at time t, Qp is the flow rate of the expanded tobacco at time t, and Qg is the flow rate of the stem at time t.

3. The method for controlling the blending and flavoring of tobacco shreds according to claim 1, characterized in that, The formula for calculating the theoretical incense-adding flow rate Qi2(t) of the second control system at time t is as follows: Qi2(t)=(Qd-Qd(t)×k)×s Where Qd is the theoretical total tobacco flow rate, Qd(t) is the total tobacco flow rate at time t, s is the preset flavoring ratio coefficient, and k is the weighting coefficient.

4. The method for controlling the blending and flavoring of tobacco shreds according to claim 1, characterized in that, The specific steps for obtaining the cumulative fragrance addition deviation e(t) of the first control system at time t are as follows: S21: Obtain the theoretical total cumulative amount of tobacco shreds Gd, and calculate the theoretical cumulative amount of flavoring added by the first control system Gi1. The calculation formula is as follows: Gi1=Gd×s×k Wherein, Gd is the theoretical total cumulative amount of tobacco, s is the preset flavoring ratio coefficient, and k is the weighting coefficient; S22: Obtain the cumulative amount of fragrance added Gi(t) of the first control system at time t, and calculate the deviation of the cumulative amount of fragrance added e(t) of the first control system at time t. The calculation formula is as follows: e(t) = Gi(t) - Gi Where Gi(t) is the cumulative amount of fragrance added by the first control system at time t, and Gi is the theoretical cumulative amount of fragrance added by the first control system.

5. The method for controlling the blending and flavoring of tobacco shreds according to claim 1, characterized in that, The formula for calculating the incense flow deviation δ of the first control system at time t in step S2 is as follows: δ = Qi1(t) - Qi1 Where Qi1(t) is the fragrance flow rate of the first control system at time t, and Qi1 is the theoretical fragrance flow rate of the first control system.

6. The method for controlling the blending and flavoring of tobacco shreds according to claim 1, characterized in that, The specific steps for obtaining the instantaneous flow rate deviation λ of the fragrance addition in step S4 are as follows: λ=α / T Where α is the cumulative deviation of fragrance added within time T, and T is the time interval between time t+1 and time t.

7. The method for controlling the blending and flavoring of tobacco shreds according to claim 1, characterized in that, The formula for calculating the cumulative deviation α of fragrance addition within time T in step S4 is as follows: α=△Gd×s-△Gi1 Where △Gd is the cumulative increase of the total amount of tobacco in the first control system within time T, △Gi1 is the cumulative increase of the flavoring flow rate in the first control system within time T, and s is the preset flavoring ratio coefficient.

8. The method for controlling the blending and flavoring of tobacco shreds according to claim 7, characterized in that, The formula for calculating the cumulative increase in the total amount of tobacco shreds, ΔGd, of the first control system within time T is as follows: △Gd = Gd(t+1) - Gd(t) Where Gd(t+1) is the total cumulative amount of tobacco at time t+1, and Gd(t) is the total cumulative amount of tobacco at time t; The formula for calculating the cumulative increment ΔGi1 of the fragrance application flow rate of the first control system within time T is as follows: △Gi1=Gi1(t+1)-Gi1(t) Where Gi1(t+1) is the theoretical cumulative amount of incense added by the first control system at time t+1, and Gi1(t) is the theoretical cumulative amount of incense added by the first control system at time t.

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