CN106262999A - A kind of humidifying equipment amount of water automatic correcting method - Google Patents
A kind of humidifying equipment amount of water automatic correcting method Download PDFInfo
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- CN106262999A CN106262999A CN201610613880.9A CN201610613880A CN106262999A CN 106262999 A CN106262999 A CN 106262999A CN 201610613880 A CN201610613880 A CN 201610613880A CN 106262999 A CN106262999 A CN 106262999A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 112
- 238000005259 measurement Methods 0.000 claims description 22
- 238000012937 correction Methods 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 9
- 230000009123 feedback regulation Effects 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000004364 calculation method Methods 0.000 abstract description 3
- 241000208125 Nicotiana Species 0.000 description 4
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 2
- 230000037452 priming Effects 0.000 description 2
- 238000000205 computational method Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000009692 water atomization Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/04—Humidifying or drying tobacco bunches or cut tobacco
-
- 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
- G05B11/00—Automatic controllers
- G05B11/01—Automatic controllers electric
- G05B11/36—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential
- G05B11/42—Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential for obtaining a characteristic which is both proportional and time-dependent, e.g. P. I., P. I. D.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Non-Electrical Variables (AREA)
Abstract
本发明公开了一种增湿设备加水量自动修正方法，首先分别测量增设设备的入口物料流量测量值及入口物料水分测量值，并设定增湿设备的出口物料水分设定值，然后计算增湿设备的理论加水量，利用水分仪测得增湿设备的出口物料水分测量值，以出口物料水分设定值和出口物料水分测量值为前馈输入变量，以增湿设备加水量的测量值和出口物料水分测量值为扰动量，通过出口水分反馈调节PID和加水阀门PID形成两级PID控制系统，实现双极串联的PID控制系统，从而对增湿设备的实际加水量进行控制，能够消除设备初始阶段和由于外部环境变化造成的增湿设备出口水分指标产生的偏离，有效提高增湿设备计算量的控制水平，提高了设备的工作效率。
The invention discloses a method for automatically correcting the amount of water added to humidification equipment. Firstly, the measured value of the inlet material flow and the moisture of the inlet material of the added equipment are respectively measured, and the set value of the moisture of the outlet material of the humidifier is set, and then the added value is calculated. The theoretical amount of water added to the wet equipment, the measured value of the outlet material moisture of the humidification equipment is measured by a moisture meter, the set value of the outlet material moisture and the measured value of the outlet material moisture are used as feed-forward input variables, and the measured value of the water added by the humidifier is used And the measured value of the outlet material moisture is the disturbance amount. The PID and the water valve PID are adjusted through the outlet moisture feedback to form a two-stage PID control system, which realizes the PID control system with two poles in series, so as to control the actual water addition of the humidification equipment, which can eliminate The initial stage of the equipment and the deviation of the moisture index at the outlet of the humidification equipment due to changes in the external environment can effectively improve the control level of the calculation amount of the humidification equipment and improve the working efficiency of the equipment.
Description
Technical field
The present invention relates to tobacco business humidifying equipment amount of water control field, particularly relate to a kind of humidifying equipment amount of water certainly
Dynamic modification method.
Background technology
According to tobacco processing line process specifications, a lot of operations need to carry out humidification to tobacco material and add water, amount of water
How many quality on product produce directly impact.Along with improving constantly of tobacco business technical indicator, humidifying equipment exists
The head material stage, owing to entrance moisture always has the process rising to actual value from the least value, in this process a program meter
The amount of water calculated, considerably beyond amount of water during normal production, causes the deviation of head material stage moisture content of outlet bigger；Work as supplied materials simultaneously
When moisture fluctuation is bigger, in production process, humidifying equipment moisture content of outlet also there will be over control, causes humidifying equipment water outlet
Partial wave is dynamic big, affects the quality of product.
Summary of the invention
It is an object of the invention to provide a kind of humidifying equipment amount of water automatic correcting method, it is possible to ensure that humidifying equipment goes out
Mouth moisture content index, improves the work efficiency of equipment and controls level, thus improving the quality of product.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of humidifying equipment amount of water automatic correcting method, comprises the following steps successively:
(1) it is utilized respectively belted electronic balance and entrance mass flow measured value a and the entrance of equipment are set up in Moisture Meter measurement
Material moisture measured value b, subsequently into step (2)；
(2) technological standards according to humidifying equipment sets outlet material moisture setting value c of humidifying equipment, subsequently into step
Suddenly (3)；
(3) according to entrance mass flow measured value a, entrance material moisture measured value b and outlet material moisture setting value c,
Calculate the theoretical amount of water y of humidifying equipment, subsequently into step (4)；
(4) Moisture Meter is utilized to record the outlet material moisture measurement value c ' of humidifying equipment, subsequently into step (5)；
(5) outlet material moisture measurement value c ' is inputted moisture content of outlet feedback regulation PID with outlet material moisture setting value c
Controller carries out proportion differential calculating, thus obtains outlet material moisture correction value u (t), subsequently into step (6)；
(6) effusion meter is utilized to record the flow measurements y ' that adds water of humidifying equipment, subsequently into step (7)；
(7) add water valve by the flow measurements y ' input that adds water of outlet material moisture correction value u (t) with humidifying equipment
PID controller carries out proportion differential calculating, thus obtains the actual amount of water y of humidifying equipment ", subsequently into step (8)；
(8) the valve PID controller that adds water is according to the actual amount of water y of humidifying equipment " control to add water the opening and closing of valve, thus
Control the actual amount of water of humidifying equipment.
In described step (3), the calculating process of the theoretical amount of water y of humidifying equipment is as follows:
1. calculating siccative amount h=a* (1-b) of added material, wherein, a represents entrance mass flow measured value, b represent into
Mouth material moisture measured value, subsequently into step 2.；
2. calculating the theoretical mass flow i=h/1-c in humidifying equipment exit, wherein, h represents the siccative of added material
Amount, c represents outlet material moisture setting value, subsequently into step 3.；
3. calculating theoretical amount of water y=i-a=a* (the c-b)/1-c of humidifying equipment, wherein, a represents entrance mass flow
Measured value, b represents entrance material moisture measured value, and c represents outlet material moisture setting value.
In described step (5), outlet material moisture correction value u (t)=u (t-1)+Δ u (t), wherein, and t express time, u
T () represents the outlet material moisture correction value obtained in t, u (t-1) represents the outlet material moisture obtained in the t-1 moment
Correction value, Δ u (t)=q0e(t)+q1e(t-1)+q2E (t-2), wherein, q0=Kp(1+Td/ T), q1=-Kp(1+2Td/ T), q2
=Kp*Td/ T, KpRepresent proportionality coefficient, TdRepresenting derivative time constant, T represents regulating cycle, Kp、TdAnd T is all in accordance with outlet thing
Material moisture measurement value c ' sets with outlet material moisture setting value c.
In described step (7), the actual amount of water y of humidifying equipment " computing formula as follows:
In the stub bar stage, i.e. only charging does not has the stage of discharging, the actual amount of water y "=k*a* (c-of humidifying equipment
B)/(1-c), wherein, k represents and adds water coefficient, sets according to needs of production, and a represents entrance mass flow measured value, b table
Being shown into a mouthful material moisture measured value, c represents outlet material moisture setting value；
In the stage in material, charging is i.e. had also to have the stage of discharging, the actual amount of water y of humidifying equipment "=k*a* (c-b)/
1-c+u (t), wherein, k represents and adds water coefficient, sets according to needs of production, and a represents entrance mass flow measured value, b table
Being shown into a mouthful material moisture measured value, c represents outlet material moisture setting value, and u (t) represents outlet material moisture correction value；
In the stage that the material tail stage, the most only discharging does not feed, the actual amount of water y "=k*a* (c-of humidifying equipment
B)/1-c+u (t), wherein, k represents and adds water coefficient, sets according to needs of production, and a represents entrance mass flow measured value, b
Representing entrance material moisture measured value, c represents outlet material moisture setting value, and u (t) represents outlet material moisture correction value.
In described step (7), if the actual amount of water of calculated humidifying equipment is less than 30kg/h, then directly closes and add
Penstock.
Described moisture content of outlet feedback regulation PID controller and the valve PID controller that adds water all use Siemens to continuously adjust
Functional device FB41.
The invention discloses a kind of humidifying equipment amount of water automatic correcting method, with outlet material moisture setting value and outlet
Material moisture measured value is feedforward input variable, with the measured value of humidifying equipment amount of water and outlet material moisture measurement value for disturbing
Momentum, forms two-stage PID control system by moisture content of outlet feedback regulation PID and the valve PID that adds water, it is achieved bipolar series
PID control system, thus the actual amount of water of humidifying equipment is controlled, it is possible to abatement apparatus starting stage and due to outside
The deviation that the humidifying equipment moisture content of outlet index that environmental change causes produces, is effectively improved the control water of humidifying equipment amount of calculation
Flat, decrease system overshoot and hysteresis, ensured humidifying equipment moisture content of outlet index, reach to improve humidifying equipment and control water
Flat purpose, improves work efficiency and the control level of equipment.The present invention is simple to operate, and humidification amount of water controls effective,
There is good industrial application value and popularizing application prospect.
Accompanying drawing explanation
Fig. 1 is the control principle drawing of the present invention；
Fig. 2 is the flow chart of the present invention.
Detailed description of the invention
As shown in Figures 1 and 2, a kind of humidifying equipment amount of water automatic correcting method of the present invention, include successively with
Lower step:
(1) it is utilized respectively belted electronic balance and entrance mass flow measured value a and the entrance of equipment are set up in Moisture Meter measurement
Material moisture measured value b, subsequently into step (2)；
(2) technological standards according to humidifying equipment sets outlet material moisture setting value c of humidifying equipment, subsequently into step
Suddenly (3)；
(3) according to entrance mass flow measured value a, entrance material moisture measured value b and outlet material moisture setting value c,
Calculate the theoretical amount of water y of humidifying equipment, subsequently into step (4)；
The calculating process of the theoretical amount of water y of humidifying equipment is as follows:
1. calculating siccative amount h=a* (1-b) of added material, wherein, a represents entrance mass flow measured value, b represent into
Mouth material moisture measured value, subsequently into step 2.；
2. calculating the theoretical mass flow i=h/1-c in humidifying equipment exit, wherein, h represents the siccative of added material
Amount, c represents outlet material moisture setting value, subsequently into step 3.；
3. calculating theoretical amount of water y=i-a=a* (the c-b)/1-c of humidifying equipment, wherein, a represents entrance mass flow
Measured value, b represents entrance material moisture measured value, and c represents outlet material moisture setting value.
(4) Moisture Meter is utilized to record the outlet material moisture measurement value c ' of humidifying equipment, subsequently into step (5)；
(5) outlet material moisture measurement value c ' is inputted moisture content of outlet feedback regulation PID with outlet material moisture setting value c
Controller carries out proportion differential calculating, thus obtains outlet material moisture correction value u (t), subsequently into step (6)；
Outlet material moisture correction value u (t)=u (t-1)+Δ u (t), wherein, t express time, u (t) represents in t
The outlet material moisture correction value obtained, the outlet material moisture correction value that u (t-1) expression obtained in the t-1 moment, Δ u (t)=
q0e(t)+q1e(t-1)+q2E (t-2), wherein, q0=Kp(1+Td/ T), q1=-Kp(1+2Td/ T), q2=Kp*Td/ T, KpRepresent
Proportionality coefficient, TdRepresenting derivative time constant, T represents regulating cycle, Kp、TdAnd T all in accordance with outlet material moisture measurement value c ' with
Outlet material moisture setting value c sets.
(6) effusion meter is utilized to record the flow measurements y ' that adds water of humidifying equipment, subsequently into step (7)；
(7) add water valve by the flow measurements y ' input that adds water of outlet material moisture correction value u (t) with humidifying equipment
PID controller carries out proportion differential calculating, thus obtains the actual amount of water y of humidifying equipment ", subsequently into step (8)；
The actual amount of water y of humidifying equipment " calculating process as follows:
In the stub bar stage, i.e. only charging does not has the stage of discharging, in this stage, owing to exit does not has material, goes out
Mouth material moisture setting value is not involved in calculating.Owing to humidifying equipment will be humidified water atomization by steam, the addition certainty shadow of steam
Ring the moisture value of material, in order to eliminate the impact of other factors, when calculating the actual amount of water of humidifying equipment, at humidifying equipment
Theoretical amount of water on the basis of the theoretical amount of water of humidifying equipment is modified by adding water coefficient.
"=k*a* (c-b)/(1-c), wherein, k represents and adds water system the now actual amount of water y of moisture content of outlet humidifying equipment
Number, sets according to needs of production, and a represents entrance mass flow measured value, and b represents entrance material moisture measured value, and c represents
Outlet material moisture setting value.
In the present embodiment, entrance material moisture measured value such as less than 14%, calculate by 14%, prevent the stub bar stage loose
Moisture regain moisture content of outlet is too high.
In the stage in material, i.e. having charging also to have the stage of discharging, the moisture in exit participates in controlling, thus to humidifying equipment
Actual amount of water be modified, the now actual amount of water y of humidifying equipment "=k*a* (c-b)/1-c+u (t), wherein, k table
Showing and add water coefficient, setting according to needs of production, a represents entrance mass flow measured value, and b represents that entrance material moisture is measured
Value, c represents outlet material moisture setting value, and u (t) represents outlet material moisture correction value；
In the stage that the material tail stage, the most only discharging does not feed, this stage is still according to the computational methods meter in stage in material
Calculate the actual amount of water of humidifying equipment, the now actual amount of water y of humidifying equipment "=k*a* (c-b)/1-c+u (t), wherein, k
Representing and add water coefficient, setting according to needs of production, a represents entrance mass flow measured value, and b represents that entrance material moisture is surveyed
Value, c represents outlet material moisture setting value, and u (t) represents outlet material moisture correction value.
If the actual amount of water of calculated humidifying equipment is less than 30kg/h, then directly close the valve that adds water, anti-fluid stopping
Measure and too low cause water not to be atomized, affect the normal use of humidifying equipment.
(8) the valve PID controller that adds water is according to the actual amount of water y of humidifying equipment " control to add water the opening and closing of valve, thus
Control the actual amount of water of humidifying equipment.
In the present embodiment, described moisture content of outlet feedback regulation PID controller and priming valve gate control PID controller are all adopted
Continuously adjusting functional device FB41 with Siemens, to realize adding water, the PID of valve opening automatically controls.
The invention discloses a kind of humidifying equipment amount of water automatic correcting method, with outlet material moisture setting value and outlet
Material moisture measured value is feedforward input variable, with the measured value of humidifying equipment amount of water and outlet material moisture measurement value for disturbing
Momentum, forms two-stage PID control system by moisture content of outlet feedback regulation PID and priming valve gate control PID, it is achieved bipolar series
PID control system, thus the actual amount of water of humidifying equipment is controlled, it is possible to abatement apparatus starting stage and due to outward
The deviation that the humidifying equipment moisture content of outlet index that portion's environmental change causes produces, is effectively improved the control water of humidifying equipment amount of calculation
Flat, decrease system overshoot and hysteresis, ensured humidifying equipment moisture content of outlet index, reach to improve humidifying equipment and control water
Flat purpose, improves work efficiency and the control level of equipment.
Claims (6)
1. a humidifying equipment amount of water automatic correcting method, it is characterised in that comprise the following steps successively:
(1) it is utilized respectively belted electronic balance and entrance mass flow measured value a and the entrance material of equipment are set up in Moisture Meter measurement
Moisture measurement value b, subsequently into step (2)；
(2) technological standards according to humidifying equipment sets outlet material moisture setting value c of humidifying equipment, subsequently into step
(3)；
(3) according to entrance mass flow measured value a, entrance material moisture measured value b and outlet material moisture setting value c, calculate
The theoretical amount of water y of humidifying equipment, subsequently into step (4)；
(4) Moisture Meter is utilized to record the outlet material moisture measurement value c ' of humidifying equipment, subsequently into step (5)；
(5) outlet material moisture measurement value c ' is controlled with outlet material moisture setting value c input moisture content of outlet feedback regulation PID
Device carries out proportion differential calculating, thus obtains outlet material moisture correction value u (t), subsequently into step (6)；
(6) effusion meter is utilized to record the flow measurements y ' that adds water of humidifying equipment, subsequently into step (7)；
(7) add water valve PID control by the flow measurements y ' input that adds water of outlet material moisture correction value u (t) with humidifying equipment
Device processed carries out proportion differential calculating, thus obtains the actual amount of water y of humidifying equipment ", subsequently into step (8)；
(8) the valve PID controller that adds water is according to the actual amount of water y of humidifying equipment, and " control to add water the opening and closing of valve, thus controls
The actual amount of water of humidifying equipment.
2. a kind of humidifying equipment amount of water automatic correcting method as claimed in claim 1, it is characterised in that described step (3)
In, the calculating process of the theoretical amount of water y of humidifying equipment is as follows:
1. calculating siccative amount h=a* (1-b) of added material, wherein, a represents entrance mass flow measured value, and b represents entrance thing
Material moisture measurement value, subsequently into step 2.；
2. calculating the theoretical mass flow i=h/1-c in humidifying equipment exit, wherein, h represents the siccative amount of added material, c table
A mouthful material moisture setting value is shown, subsequently into step 3.；
3. calculating theoretical amount of water y=i-a=a* (the c-b)/1-c of humidifying equipment, wherein, a represents that entrance mass flow is measured
Value, b represents entrance material moisture measured value, and c represents outlet material moisture setting value.
3. a kind of humidifying equipment amount of water automatic correcting method as claimed in claim 2, it is characterised in that: described step (5)
In, outlet material moisture correction value u (t)=u (t-1)+Δ u (t), wherein, t express time, u (t) expression obtains in t
Outlet material moisture correction value, u (t-1) represents the outlet material moisture correction value obtained in the t-1 moment, Δ u (t)=q0e(t)
+q1e(t-1)+q2E (t-2), wherein, q0=Kp(1+Td/ T), q1=-Kp(1+2Td/ T), q2=Kp*Td/ T, KpExpression ratio system
Number, TdRepresenting derivative time constant, T represents regulating cycle, Kp、TdAnd T is all in accordance with outlet material moisture measurement value c ' and outlet thing
Material moisture setting value c sets.
4. a kind of humidifying equipment amount of water automatic correcting method as claimed in claim 3, it is characterised in that: described step (7)
In, the actual amount of water y of humidifying equipment " computing formula as follows:
In the stub bar stage, i.e. only charging does not has the stage of discharging, actual amount of water y "=k*a* (c-b)/(1-of humidifying equipment
C), wherein, k represents and adds water coefficient, sets according to needs of production, and a represents entrance mass flow measured value, and b represents entrance
Material moisture measured value, c represents outlet material moisture setting value；
In the stage in material, charging is i.e. had also to have the stage of discharging, actual amount of water y "=k*a* (the c-b)/1-c+u of humidifying equipment
T (), wherein, k represents and adds water coefficient, sets according to needs of production, and a represents entrance mass flow measured value, and b represents entrance
Material moisture measured value, c represents outlet material moisture setting value, and u (t) represents outlet material moisture correction value；
In the stage that the material tail stage, the most only discharging does not feed, actual amount of water y "=k*a* (the c-b)/1-c of humidifying equipment
+ u (t), wherein, k represents and adds water coefficient, sets according to needs of production, and a represents entrance mass flow measured value, b represent into
Mouth material moisture measured value, c represents outlet material moisture setting value, and u (t) represents outlet material moisture correction value.
5. a kind of humidifying equipment amount of water automatic correcting method as claimed in claim 4, it is characterised in that: described step (7)
In, if the actual amount of water of calculated humidifying equipment is less than 30kg/h, then directly close the valve that adds water.
6. a kind of humidifying equipment amount of water automatic correcting method as claimed in claim 5, it is characterised in that: described moisture content of outlet
Feedback regulation PID controller and the valve PID controller that adds water all use Siemens to continuously adjust functional device FB41.
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| CN201610613880.9A CN106262999A (en) | 2016-08-01 | 2016-08-01 | A kind of humidifying equipment amount of water automatic correcting method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106773657A (en) * | 2017-03-28 | 2017-05-31 | 中国烟草总公司郑州烟草研究院 | A kind of roller drying unstable state process head material and the optimising and adjustment method in tailing stage |
| CN107411164A (en) * | 2017-08-03 | 2017-12-01 | 河南中烟工业有限责任公司 | For loosening and gaining moisture roller rear chamber three-stage priming apparatus and water adding control method |
| CN108152461A (en) * | 2017-12-26 | 2018-06-12 | 安徽润安信科检测科技有限公司 | A kind of fragrant yeast moisture monitoring priming apparatus and its control method |
| CN108865188A (en) * | 2018-07-05 | 2018-11-23 | 中冶焦耐(大连)工程技术有限公司 | An automatic control method for dry coke quenching by adding water to suppress dust |
| CN113133539A (en) * | 2021-05-20 | 2021-07-20 | 湖北省烟草科学研究院 | Double-weighing moisture regaining method for cigar core tobacco leaves |
| CN115381128A (en) * | 2022-08-26 | 2022-11-25 | 云南昆船烟草设备有限公司 | Method for controlling moisture at outlet of tobacco leaf roller equipment and readable storage medium thereof |
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| CN106773657B (en) * | 2017-03-28 | 2019-08-09 | 中国烟草总公司郑州烟草研究院 | A kind of optimising and adjustment method of roller drying unstable state process head material and tailing stage |
| CN107411164A (en) * | 2017-08-03 | 2017-12-01 | 河南中烟工业有限责任公司 | For loosening and gaining moisture roller rear chamber three-stage priming apparatus and water adding control method |
| CN107411164B (en) * | 2017-08-03 | 2022-12-23 | 河南中烟工业有限责任公司 | Three-stage water-adding device and water-adding control method for the rear chamber of the loose moisture-recovering drum |
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| CN113133539A (en) * | 2021-05-20 | 2021-07-20 | 湖北省烟草科学研究院 | Double-weighing moisture regaining method for cigar core tobacco leaves |
| CN113133539B (en) * | 2021-05-20 | 2022-06-21 | 湖北省烟草科学研究院 | A kind of double weighing and moisturizing method of cigar filler tobacco leaves |
| CN115381128A (en) * | 2022-08-26 | 2022-11-25 | 云南昆船烟草设备有限公司 | Method for controlling moisture at outlet of tobacco leaf roller equipment and readable storage medium thereof |
| 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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