CN103315383B - A kind of tobacco cutting feeds in raw material humidity control method - Google Patents
A kind of tobacco cutting feeds in raw material humidity control method Download PDFInfo
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- CN103315383B CN103315383B CN201310246967.3A CN201310246967A CN103315383B CN 103315383 B CN103315383 B CN 103315383B CN 201310246967 A CN201310246967 A CN 201310246967A CN 103315383 B CN103315383 B CN 103315383B
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Abstract
The present invention relates to a kind of tobacco cutting to feed in raw material humidity control method, PID master controller and cascade PID controller two PID phase series connection, linearity compensator is serially connected between PID master controller and cascade PID controller, moisture content of outlet PV1 is fed back to PID master controller input by major loop, and existing barrel temperature PV2 is fed back to the input of cascade PID controller by subsidiary loop; PID master controller calculates water normal valve aperture LMN1 according to the drift gage of moisture content of outlet setting SP1 and actual moisture PV1; Cascade PID controller will through the conversion of linearity compensator revised water normal valve aperture for the temperature controlled setting value SP2 of barrel, then calculates steam valve aperture LMN2 by desired temperature SP2 and actual value PV2 and export PV1 with stable moisture.The present invention effectively reduces temperature and moisture is controlled to the impacts such as delayed, the fluctuation brought.
Description
Technical field
The present invention relates to a kind of moisture autocontrol method being applied to tobacco cutting technique.
Background technology
Cigarette charging refers in production of cigarettes process, and tobacco leaf applies the technical process of " feed liquid ".Reinforced final purpose improves the sucking quality of cigarette, forms peculiar style, to meet the requirement of smoker.
In technology for making tobacco threds, reinforced water management capability height drastically influence the quality of pipe tobacco product.There is water management capability difference in existing throwing charger, has that fluctuation is large, moisture completion rate is low, and human intervention not in time, exists the problems such as intervention of staggering the time, accuracy are low.And affect moisture and control mainly due to factors such as barrel temperature shock, manual control error are large.
Summary of the invention
In order to solve former Controlling model Problems existing, goal of the invention of the present invention is to provide a kind of tobacco cutting to feed in raw material humidity control method, charger barrel temperature PID is cascaded in moisture control loop by the method, steady, accurate without delayed automatic control to realize moisture stabilization.
In order to realize above-mentioned object, present invention employs following technical scheme:
A kind of tobacco cutting feeds in raw material humidity control method, and the device that the method adopts comprises PID master controller, cascade PID controller, linearity compensator, major loop and subsidiary loop; Described PID master controller and cascade PID controller two PID phase series connection, described linearity compensator is serially connected between PID master controller and cascade PID controller, moisture content of outlet PV1 is fed back to PID master controller input by described major loop, and barrel temperature PV2 is fed back to the input of cascade PID controller by subsidiary loop; PID master controller determines the set point of cascade PID controller, and described PID master controller calculates water normal valve aperture LMN1 according to the drift gage of moisture content of outlet setting SP1 and actual moisture PV1 '; Cascade PID controller will through the conversion of linearity compensator revised water normal valve aperture for the temperature controlled setting value SP2 of barrel, then calculates steam valve aperture LMN2 by desired temperature SP2 and actual value PV2 ' and export PV with stable moisture.
As preferably, this device also comprises steam table, the barrel temperature PV2 that steam table collects under other disturbing factors.
As preferably, this device also comprises Moisture Meter, and Moisture Meter gathers moisture content of outlet PV1.
As preferably, described linearity compensator is one and determines a linear function (fLMN1) by equipment concrete condition, and parameter can draw according to process control record data and operating experience, and revises according to debug results.
Charger barrel temperature PID is cascaded in moisture control loop by the present invention, effectively reduces temperature and moisture is controlled to the impacts such as delayed, the fluctuation brought.Present invention achieves automatic control function; Improve reinforced water management capability, stablize moisture fluctuation range, eliminate moisture control hysteresis; Reduce human intervention not in time, the impact of the factor such as inaccuracy.
Accompanying drawing explanation
Fig. 1 is the structural representation of control device of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is made a detailed explanation.
A kind of tobacco cutting as shown in Figure 1 feeds in raw material humidity control method, and the method says that the device adopted comprises PID master controller 1, cascade PID controller 2, linearity compensator 3, major loop 4, subsidiary loop 5, steam table and Moisture Meter.Described PID master controller 1 and cascade PID controller 2 two PID phase series connection, described linearity compensator 3 is serially connected between PID master controller 1 and cascade PID controller 2, moisture content of outlet PV1 is fed back to PID master controller 1 input by described major loop 4, and existing barrel temperature PV2 is fed back to the input of cascade PID controller 2 by subsidiary loop 5.PID master controller 1 determines the set point of cascade PID controller 2, and described PID master controller 1 calculates water normal valve aperture LMN1 according to the drift gage of moisture content of outlet setting SP1 and actual moisture PV1 '; Cascade PID controller 2 will through the conversion of linearity compensator 3 revised water normal valve aperture for the temperature controlled setting value SP2 of barrel, then calculates steam valve aperture LMN2 by desired temperature SP2 and actual value PV2 ' and export PV with stable moisture.Linearity compensator 3 is one and determines a linear function (fLMN1) by equipment concrete condition, and formula and parameter can draw according to process control record data and operating experience, and revise according to debug results.
As shown in Figure 1, described process 2 is the processes of the barrel temperature PV2 that steam table collects under other disturbing factors, and process 1 is the process that Moisture Meter gathers moisture content of outlet PV1.
Claims (3)
1. tobacco cutting feeds in raw material a humidity control method, it is characterized in that the device that the method adopts comprises PID master controller (1), cascade PID controller (2), linearity compensator (3), major loop (4) and subsidiary loop (5); Described PID master controller (1) and cascade PID controller (2) two PID phase series connection, described linearity compensator (3) is serially connected between PID master controller (1) and cascade PID controller (2), moisture content of outlet PV1 is fed back to PID master controller (1) input by described major loop (4), and barrel temperature PV2 is fed back to the input of cascade PID controller (2) by subsidiary loop (5); Described PID master controller (1) determines the set point of cascade PID controller (2), and PID master controller (1) calculates water normal valve aperture LMN1 according to the drift gage of moisture content of outlet setting SP1 and actual moisture PV1 '; Cascade PID controller (2) will through the conversion of linearity compensator (3) revised water normal valve aperture for the temperature controlled desired temperature SP2 of barrel, then calculates steam valve aperture LMN2 by desired temperature SP2 and actual value PV2 ' and export PV with stable moisture.
2. a kind of tobacco cutting according to claim 1 feeds in raw material humidity control method, it is characterized in that described device also comprises steam table, the barrel temperature PV2 that steam table collects under other disturbing factors.
3. a kind of tobacco cutting according to claim 1 feeds in raw material humidity control method, it is characterized in that described linearity compensator (3) is one and determines a linear function f(LMN1 by equipment concrete condition), parameter can draw according to process control record data and operating experience, and revises according to debug results.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310246967.3A CN103315383B (en) | 2013-06-19 | 2013-06-19 | A kind of tobacco cutting feeds in raw material humidity control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310246967.3A CN103315383B (en) | 2013-06-19 | 2013-06-19 | A kind of tobacco cutting feeds in raw material humidity control method |
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| CN103315383A CN103315383A (en) | 2013-09-25 |
| CN103315383B true CN103315383B (en) | 2015-10-14 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104273646B (en) * | 2014-09-28 | 2016-04-27 | 上海烟草集团有限责任公司 | Even feeding spraying humidification moisture control subsystem |
| CN107908102A (en) * | 2017-11-20 | 2018-04-13 | 浙江中烟工业有限责任公司 | A kind of multichannel PID manual switching control methods suitable for throwing smoke machine |
| CN108549429A (en) * | 2018-04-08 | 2018-09-18 | 江苏中烟工业有限责任公司 | A kind of loosening and gaining moisture roll processes gas temprature control method |
| CN109782826B (en) * | 2019-01-14 | 2020-12-25 | 浙江中烟工业有限责任公司 | Difunctional washing water constant temperature equipment suitable for washing stalk machine |
| CN110946311B (en) * | 2019-12-12 | 2022-01-11 | 河南中烟工业有限责任公司 | Quality control method and system for charging cut stems |
| CN115053975B (en) * | 2022-06-15 | 2023-08-22 | 浙江中烟工业有限责任公司 | PID (proportion integration differentiation) associated control method for outlet moisture temperature of loosening and leaf wetting machine |
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