CN103365211A - Loosening and wetting moisture control device - Google Patents

Loosening and wetting moisture control device Download PDF

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Publication number
CN103365211A
CN103365211A CN2013102467860A CN201310246786A CN103365211A CN 103365211 A CN103365211 A CN 103365211A CN 2013102467860 A CN2013102467860 A CN 2013102467860A CN 201310246786 A CN201310246786 A CN 201310246786A CN 103365211 A CN103365211 A CN 103365211A
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China
Prior art keywords
pid
moisture
control
interface
loose leaves
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Pending
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CN2013102467860A
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Chinese (zh)
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郭奔
李汉莹
朱辉平
王有利
孙哲建
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China Tobacco Zhejiang Industrial Co Ltd
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China Tobacco Zhejiang Industrial Co Ltd
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Priority to CN2013102467860A priority Critical patent/CN103365211A/en
Publication of CN103365211A publication Critical patent/CN103365211A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a loosening and wetting moisture control device. The device comprises a fuzzy control module and a PID (proportion integration differentiation) control block, which are laminated in parallel, wherein a digital PID controller is adopted for the whole model PID control end of the PID control block, and the control accuracy is improved in a closed loop feedback way through PID operation feedback input; and the fuzzy control block comprises a fuzzification interface, a rule base, a database, an inference engine and a defuzzification interface, and is used for fuzzifying PID output, performing calculation for timely regulation in the inference engine by utilizing the established database and the defined rule base, performing data format recovery on the PID output through the defuzzification interface, and finally superposing the PID output on an output interface. According to the device, the requirements of accurate matching control can be met; and meanwhile, an incoming material moisture pre-judgment mechanism can be timely self-regulated to fulfill the aim of improving the moisture control capability.

Description

A kind of loose leaves moisting moisture content control device
Technical field
The present invention relates to a kind of moisture automaton that is applied to tobacco cutting technique, especially a kind of loose leaves moisting moisture content control device.
Background technology
The loose leaves moisting technique of scrap prodn. line mainly is to the smoked sheet PROCESS FOR TREATMENT behind the beating and double roasting, heats and humidification specifically with the loose one-tenth smoked sheet of cigarette piece of vertical cutting machine output, and to smoked sheet.The quality of smoked sheet moisture control accuracy, particularly important to the toughness and the anti-processability that improve smoked sheet.
Fuzzy controller is the new controller that a kind of development in recent years is got up, and its advantage is not require the mathematical models of grasping controll plant, and according to manual control regular weaves control decision table, is then decided the size of controlled quentity controlled variable by this voting.Fuzzy control and PID controller are combined, maximize favourable factors and minimize unfavourable ones, both had the flexible and adaptable advantage of fuzzy control, have again the high characteristics of PID control accuracy.
Existing loose leaves moisting moisture control model exists control ability low, and fluctuation is large, qualification rate is low, and there are the problems such as the intervention of staggering the time, degree of accuracy be low in human intervention.Loose leaves moisting moisture control system be a large time delay, the time become, nonlinear complication system.Wherein, the unknown parameters such as supplied materials tobacco bale moisture, whole system exist again hysteresis and random disturbance, and therefore being one can't obtain accurately mathematical model.
Summary of the invention
In order to solve above-mentioned technical matters, goal of the invention of the present invention is to provide a kind of loose leaves moisting moisture content control device, this device combines fuzzy controller and PID control, rule base by building database and definition is realized fuzzy control, to realize steady, the accurate automatic control without lagging behind of moisture stabilization.
In order to realize above-mentioned purpose, the present invention has adopted following technical scheme:
A kind of loose leaves moisting moisture content control device, this device comprise Fuzzy Control clamp dog and the PID controll block of the stack that is in parallel; The whole model PID control end of described PID controll block adopts Digital PID Controller, and passing ratio (P), integration (I), differential (D) computing feed back input adopt closed-loop feed-back type to improve control accuracy; Described Fuzzy Control clamp dog comprises defuzzification interface, rule base, database, inference machine and ambiguity solution interface; The Fuzzy Control clamp dog carries out obfuscation with the PID output quantity first, then quoting the database of foundation and the rule base of definition performs calculations in inference machine in order to can make timely adjustment, by the ambiguity solution interface it is carried out the data layout reduction at last, on the output interface that finally superposes.
As further improvement, described in PID controll block, the moisture value r (t) that the moisture detector in existing loose leaves moisting cylinder exit gathers, according to this moisture deviation value e (t) that is worth going out, wherein c (t) is loose leaves moisting cylinder moisture content of outlet setting value;
e(t)=r(t)+c(t)
Digital PID Controller is done respectively ratio (P), integration (I), differential (D) computing to e (t) again, and the result who obtains consists of controlled quentity controlled variable u (t) by linear combination, thereby the aperture of controlling the priming valve door reaches the purpose of stabilization of export moisture;
u ( t ) = u 1 ( t ) + u 2 ( t ) + u 3 ( t ) = K p [ e ( t ) + 1 T I e ( t ) dt + T D de ( t ) dt ]
K in the formula p---scale-up factor,
T I---integration time constant,
T D---derivative time constant.
As preferably, the place of production, the grade of the corresponding different tobacco bales of described database are set the inquiry code, and according to the given water addition ratio example of practical production experience initial reference value.
As preferably, the experience that described rule base is regulated moisture during the border produces is factually set up various rules and is dealt with the impact that control brings on moisture of various data fluctuations.
The present invention is owing to having adopted above-mentioned technical scheme, whole control model adopts the mode of PID and fuzzy control stack in parallel, can satisfy like this requirement of exact matching control, the pre-judgment mechanism of supplied materials moisture can realize that in time the oneself adjusts simultaneously, reaches the purpose that improves the moisture control ability.The present invention combines Fuzzy Decision Theory and PID control, brings into play both advantages.Its individual features is better than simple digital PID control, and has preferably robustness.Particularly for non-linear and controlled device time variation, the control effect that can obtain to be satisfied with.
Description of drawings
Fig. 1 is pie graph of the present invention.
Fig. 2 is the schematic diagram of Fuzzy Control clamp dog.
Fig. 3 is fuzzy moisture control schematic diagram.
Fig. 4 is fuzzy control model database example schematic.
Fig. 5 is fuzzy control model rule base example schematic
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is made a detailed explanation.
A kind of loose leaves moisting moisture content control device as shown in Figure 1, this device comprise Fuzzy Control clamp dog 1 and the PID controll block 2 of the stack that is in parallel.As shown in Figure 2, Fuzzy Control clamp dog 2 comprises defuzzification interface 3, rule base 4, database 5, inference machine 6 and ambiguity solution interface 7.As shown in Figure 3, the whole model PID control end of PID controll block 2 adopts Digital PID Controller, and its closed-loop feed-back type can improve control accuracy; Fuzzy controller carries out obfuscation with the PID output quantity first, then quoting the database 4 of foundation and the rule base 5 of definition performs calculations in inference machine 6 in order to can make timely adjustment, by ambiguity solution interface 7 it is carried out the data layout reduction at last, on the output interface that finally superposes.Whole control model adopts the mode of PID and fuzzy control stack in parallel, can satisfy like this requirement of exact matching control, and the pre-judgment mechanism of supplied materials moisture can realize that in time the oneself adjusts simultaneously, reaches the purpose that improves the moisture control ability.
In PID controll block 2, the moisture value r (t) that the moisture detector in existing loose leaves moisting cylinder exit gathers, according to this moisture deviation value e (t) that is worth going out, wherein c (t) is loose leaves moisting cylinder moisture content of outlet setting value.
e(t)=r(t)+c(t)
Digital PID Controller is done respectively ratio P, integration I, differential D computing to e (t) again, and the result who obtains consists of controlled quentity controlled variable u (t) by linear combination, thereby the aperture of controlling the priming valve door reaches the purpose of stabilization of export moisture.
u ( t ) = u 1 ( t ) + u 2 ( t ) + u 3 ( t ) = K p [ e ( t ) + 1 T I e ( t ) dt + T D de ( t ) dt ]
K in the formula p---scale-up factor,
T I---integration time constant,
T D---derivative time constant.
Because the supplied materials tobacco bale because the different water cut of the place of production, grade is different, utilizes the wet degree of doing of 2 pairs of supplied materials tobacco bales of Fuzzy Control clamp dog to do an anticipation that shifts to an earlier date.With the input parameter of the parameters such as moisture content of outlet, existing valve opening, leaves moisting cylinder cylinder revolution as fuzzy control model, call defuzzification interface 3 functions it is carried out format conversion, then set up tobacco bale according to actual supplied materials situation and do wet level data storehouse 5, and do adjustment amount redaction rule storehouse 4 programs that wet degree is made for different tobacco bales, the adjustment amount of output is added in the output through ambiguity solution interface 7 at last.
The database 5 of setting up shown in Fig. 4, the place of production of corresponding different tobacco bales, grade are set the inquiry code, and according to the given water addition ratio example of practical production experience initial reference value.
According to the experience of regulating moisture in the reality generation, set up rule base 4 among Fig. 5 and deal with the impact that control brings on moisture of various data fluctuations.Some rule can be along with again adjusting numerical value and add the stability that new rule is constantly improved moisture control model after the application of control model.
Database 5 of the present invention and rule base 4 are that practical condition and the operating experience according to Hangzhou Cigarette Factory throwing workshop draws, and only play in this manual the effect that exemplifies, and should adopt different data and rule in different actual field.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to the present patent application claim change and modify, and all should belong to the covering scope of patent of the present invention.Usable range of the present invention not only is confined to tobacco cutting equipment, can be applicable to daily life and other industrial circles.

Claims (4)

1. loose leaves moisting moisture content control device, it is characterized in that: this device comprises Fuzzy Control clamp dog (1) and the PID controll block (2) of the stack that is in parallel, the whole model PID control end of described PID controll block (2) adopts Digital PID Controller, passing ratio (P), integration (I), differential (D) computing feed back input adopt closed-loop feed-back type to improve control accuracy; Described Fuzzy Control clamp dog (2) comprises defuzzification interface (3), rule base (4), database (5), inference machine (6) and ambiguity solution interface (7); Fuzzy Control clamp dog (2) carries out obfuscation with the PID output quantity first, then quoting the database (4) of foundation and the rule base (5) of definition performs calculations in inference machine (6) in order to can make timely adjustment, by ambiguity solution interface (7) it is carried out the data layout reduction at last, on the output interface that finally superposes.
2. a kind of loose leaves moisting moisture content control device according to claim 1, it is characterized in that in PID controll block (2), the moisture value r (t) that the moisture detector in existing loose leaves moisting cylinder exit gathers, according to this moisture deviation value e (t) that is worth going out, wherein c (t) is loose leaves moisting cylinder moisture content of outlet setting value;
e(t)=r(t)+c(t)
Digital PID Controller is done respectively ratio (P), integration (I), differential (D) computing to e (t) again, and the result who obtains consists of controlled quentity controlled variable u (t) by linear combination, thereby the aperture of controlling the priming valve door reaches the purpose of stabilization of export moisture;
u ( t ) = u 1 ( t ) + u 2 ( t ) + u 3 ( t ) = K p [ e ( t ) + 1 T I e ( t ) dt + T D de ( t ) dt ]
K in the formula p---scale-up factor,
T I---integration time constant,
T D---derivative time constant.
3. a kind of loose leaves moisting moisture content control device according to claim 1 is characterized in that the place of production, the grade of the corresponding different tobacco bales of database (5), sets the inquiry code, and according to the given water addition ratio example of practical production experience initial reference value.
4. a kind of loose leaves moisting moisture content control device according to claim 1, the experience of regulating moisture in it is characterized in that rule base (4) border producing is factually set up various rules and is dealt with the impact that control brings on moisture of various data fluctuations.
CN2013102467860A 2013-06-19 2013-06-19 Loosening and wetting moisture control device Pending CN103365211A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104904894A (en) * 2015-06-30 2015-09-16 四川中测量仪科技有限公司 Tea leaf aroma improving machine and tea leaf intelligent control aroma improving pattern
CN113515045A (en) * 2021-07-12 2021-10-19 浙江中烟工业有限责任公司 Loose leaf-moistening outlet moisture control method based on historical data prejudgment
CN115444158A (en) * 2022-09-27 2022-12-09 湖北中烟工业有限责任公司 Tobacco redrying method, system and device and computer readable storage medium

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US3905123A (en) * 1973-10-15 1975-09-16 Industrial Nucleonics Corp Method and apparatus for controlling a tobacco dryer
EP0357359A2 (en) * 1988-08-30 1990-03-07 British-American Tobacco Company Limited Improvements relating to smoking articles
CN101718969A (en) * 2009-12-11 2010-06-02 郭乙宏 Feeding speed servo controller of rotary cutter without clamping
CN102128763A (en) * 2010-11-16 2011-07-20 上海烟草集团有限责任公司 Method for testing humid keeping performance of tobacco
CN102388698A (en) * 2011-07-08 2012-03-28 湖北省烟草科研所 Automatic control system for tobacco seed osmoregulation and use method thereof
CN102511914A (en) * 2011-12-29 2012-06-27 红云红河烟草(集团)有限责任公司 Method for accurately controlling water content in tobacco processing

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Publication number Priority date Publication date Assignee Title
US3905123A (en) * 1973-10-15 1975-09-16 Industrial Nucleonics Corp Method and apparatus for controlling a tobacco dryer
EP0357359A2 (en) * 1988-08-30 1990-03-07 British-American Tobacco Company Limited Improvements relating to smoking articles
CN101718969A (en) * 2009-12-11 2010-06-02 郭乙宏 Feeding speed servo controller of rotary cutter without clamping
CN102128763A (en) * 2010-11-16 2011-07-20 上海烟草集团有限责任公司 Method for testing humid keeping performance of tobacco
CN102388698A (en) * 2011-07-08 2012-03-28 湖北省烟草科研所 Automatic control system for tobacco seed osmoregulation and use method thereof
CN102511914A (en) * 2011-12-29 2012-06-27 红云红河烟草(集团)有限责任公司 Method for accurately controlling water content in tobacco processing

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Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104904894A (en) * 2015-06-30 2015-09-16 四川中测量仪科技有限公司 Tea leaf aroma improving machine and tea leaf intelligent control aroma improving pattern
CN104904894B (en) * 2015-06-30 2019-02-19 四川中测量仪科技有限公司 Perfuming machine for tea and tealeaves intelligentized control method Titian mode
CN113515045A (en) * 2021-07-12 2021-10-19 浙江中烟工业有限责任公司 Loose leaf-moistening outlet moisture control method based on historical data prejudgment
CN113515045B (en) * 2021-07-12 2024-02-20 浙江中烟工业有限责任公司 Loose moist leaf outlet water control method based on history data prejudgement
CN115444158A (en) * 2022-09-27 2022-12-09 湖北中烟工业有限责任公司 Tobacco redrying method, system and device and computer readable storage medium

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Application publication date: 20131023