CN104062989A - Temperature rapid regulation calculation method for slide warmer - Google Patents
Temperature rapid regulation calculation method for slide warmer Download PDFInfo
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- CN104062989A CN104062989A CN201410217774.XA CN201410217774A CN104062989A CN 104062989 A CN104062989 A CN 104062989A CN 201410217774 A CN201410217774 A CN 201410217774A CN 104062989 A CN104062989 A CN 104062989A
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Abstract
The invention discloses a temperature rapid regulation calculation method for a slide warmer. The method comprises the following steps: (1) controlling the steam flow through an electric film valve, and introducing steam into a radiator to regulate the temperature; (2) starting temperature control, wherein the control formula of the opening of the film valve is Output=SP*Ki/Kd+(SP-PV)*Kp when the deviation ratio of a set value to a practical value is large; (3) when a practical temperature and a set temperature are within a certain deviation range, controlling by adopting an independent gain equation with deviation differential. By adopting the method, the reaction speed is high, only very small lag and slight oscillation exist, and a practical temperature value rapidly reaches the set value.
Description
Technical field
The present invention relates to the technical field that roasting sheet machine temperature is controlled automatically, also can be applied to other industry to the high technical field of temperature realtime control requirement.
Background technology
In Threshing Re-dry Product Line, roasting sheet machine is the nucleus equipment of whole line.Along with the raising gradually that cigarette factory requires quality of tobacco, the performance index of roasting sheet machine are also that requirement is more and more higher.Its temperature control is a link of its most critical, and it has directly had influence on the height of other index.
Examine at present sheet machine temperature and automatically control the main traditional PI D method that limits that adopts.It has two set-points of bound, when actual temperature electric membrane valve standard-sized sheet during lower than lower limit set-point; Electric membrane valve full cut-off in the time that actual temperature exceedes upper limit set-point; In the time that actual temperature is between lower limit and higher limit, adopt transmission PID control method.This kind of method often can not well be connected in the time of conversion, have hysteresis, reforming phenomena, and governing speed still can not meet the control requirement of roasting sheet machine.
Summary of the invention
The object of the invention is to overcome the deficiency of existing roasting sheet machine temperature control technology, a kind of little hysteresis, little concussion, the fast roasting sheet machine temperature-controlled process of reaction are provided, promoted the overall performance index of roasting sheet machine.
A kind of roasting sheet machine temperature quick adjustment computing method, the present invention includes following steps:
(1) by electric membrane valve control steam flow, steam enters heating radiator, regulates temperature;
(2) temperature control starts, and when setting value and actual value deviation ratio are larger, the dominated formulate of membrane valve aperture is:
Output＝SP*Ki/Kd+(SP-PV)*Kp
(3) in the time that actual temperature and design temperature are in certain deviation range, adopt the separate gain equation with deviation differential to control:
Output＝Kp(E)+Ki∫(E)dt+Kd*d(PV)/dt
In the time proceeding to this equation control, need output initial value of given membrane valve, this formula calculates on the basis of this initial value;
In above formula: Output is the setting aperture of electric membrane valve, and SP is desired temperature, Ki is storage gain (1/ second), and Kd is the differential gain (second), and Kp is proportional gain, and PV is temperature actual value;
(4), according to different temperatures control loop and the temperature range that will regulate and control, set PID and control storage gain Ki, differential gain Kd, proportional gain Kp.
Can be found out by above-mentioned formula, in the time that temperature control starts, the aperture maximum of membrane valve, along with the rising (actual temperature value is lower than set temperature value) of actual temperature, the aperture of membrane valve starts to change.In the time that temperature actual value and setting value are in certain deviation range, transfer (3) formula to and continue the output of electric membrane valve; When actual temperature value is during higher than set temperature value, the aperture of membrane valve reduces rapidly, to reach the object of quick adjustment.
, only there is very little hysteresis in beneficial effect of the present invention: one of the present invention is baked sheet machine temperature quick adjustment computing method, and reaction velocity is fast, very little concussion, can make actual temperature value reach rapidly setting value.
Brief description of the drawings
Fig. 1 is computing method process flow diagram of the present invention;
Fig. 2 is dry section heating curve figure;
Fig. 3 is the dry three district temperature control curve figure of Sanming, Fujian Province Redrying Factory smoked sheet multiple roasting machine.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
A kind of roasting sheet machine temperature quick adjustment computing method, the present invention includes following steps:
(1) by electric membrane valve control steam flow, steam enters heating radiator, regulates temperature;
(2) temperature control starts, and when setting value and actual value deviation ratio are larger, the dominated formulate of membrane valve aperture is:
Output＝SP*Ki/Kd+(SP-PV)*Kp
(3) in the time that actual temperature and design temperature are in certain deviation range, adopt the separate gain equation with deviation differential to control:
Output＝Kp(E)+Ki∫(E)dt+Kd*d(PV)/dt
In the time proceeding to this equation control, need output initial value of given membrane valve, this formula calculates on the basis of this initial value;
In above formula: Output is the setting aperture of electric membrane valve, and SP is desired temperature, Ki is storage gain (1/ second), and Kd is the differential gain (second), and Kp is proportional gain, and PV is temperature actual value;
(4), according to different temperatures control loop and the temperature range that will regulate and control, set PID and control storage gain Ki, differential gain Kd, proportional gain Kp;
Can be found out by above-mentioned formula, in the time that temperature control starts, the aperture maximum of membrane valve, along with the rising (actual temperature value is lower than set temperature value) of actual temperature, the aperture of membrane valve starts to change.In the time that temperature actual value and setting value are in certain deviation range, transfer (3) formula to and continue the output of electric membrane valve; When actual temperature value is during higher than set temperature value, the aperture of membrane valve reduces rapidly, to reach the object of quick adjustment.
Reaction velocity of the present invention is fast, only has very little hysteresis, and very little concussion, can make actual temperature value reach rapidly setting value.
As shown in Figure 1, as shown in Figure 2, the dry three district's temperature control curves of Sanming, Fujian Province Redrying Factory smoked sheet multiple roasting machine, as Fig. 3, comprise the steps: its dry section heating curve the roasting sheet machine temperature quick adjustment computing method process flow diagram of one that the present embodiment provides
(1) in the dry district temperature control of roasting sheet machine, set PID and control storage gain Ki, differential gain Kd, proportional gain Kp, set temperature value SP, and formula inversion temperature value range (being generally 1 DEG C); Determined numerical value is set reference for operating personnel in terminal interface;
(2) the setting opening value of calculating electric membrane valve, formula is:
Output=SP*Ki/Kd+ (SP-PV) * Kp (formula 1)
In the time that temperature deviation reaches inversion temperature value range, adopt following formula:
Output=Kp (E)+Ki ∫ (E) dt+Kd*d (PV)/dt (formula 2)
The calculated value of formula 2 can not start anew to export, otherwise can cause concussion, in formula transfer process, the output valve of formula 1 is passed to formula 2, as the initial value of formula 2;
(3) data transmission in step (1), (2) realizes by industrial network, data are calculated by the PLC processor in roasting fragment and are automatically completed, do not need artificial participation, improved work efficiency, improved again the accuracy of calculating.
One of the present invention is baked sheet machine temperature quick adjustment computing method, and reaction velocity is fast, only has very little hysteresis, and very little concussion, can make actual temperature value reach rapidly setting value.
Claims (1)
1. roasting sheet machine temperature quick adjustment computing method, is characterized in that, comprise the steps:
(1) by electric membrane valve control steam flow, steam enters heating radiator, regulates temperature;
(2) temperature control starts, and when setting value and actual value deviation ratio are larger, the dominated formulate of membrane valve aperture is:
Output =SP* Ki / Kd +(SP-PV)* Kp
(3) in the time that actual temperature and design temperature are in certain deviation range, adopt the separate gain equation with deviation differential to control:
Output = Kp (E) + Ki∫(E)dt + Kd * d(PV )/dt
In the time proceeding to this equation control, need output initial value of given membrane valve, this formula calculates on the basis of this initial value;
In above formula: Output is the setting aperture of electric membrane valve, and SP is desired temperature, Ki is storage gain (1/ second), and Kd is the differential gain (second), and Kp is proportional gain, and PV is temperature actual value;
(4), according to different temperatures control loop and the temperature range that will regulate and control, set PID and control storage gain Ki, differential gain Kd, proportional gain Kp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410217774.XA CN104062989A (en) | 2014-05-22 | 2014-05-22 | Temperature rapid regulation calculation method for slide warmer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410217774.XA CN104062989A (en) | 2014-05-22 | 2014-05-22 | Temperature rapid regulation calculation method for slide warmer |
Publications (1)
| Publication Number | Publication Date |
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| CN104062989A true CN104062989A (en) | 2014-09-24 |
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| CN201410217774.XA Pending CN104062989A (en) | 2014-05-22 | 2014-05-22 | Temperature rapid regulation calculation method for slide warmer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109549241A (en) * | 2018-12-29 | 2019-04-02 | 浙江中烟工业有限责任公司 | A kind of steam computer heating control model, steam method for heating and controlling applied to throwing cartridge type smoke machine |
| CN116219665A (en) * | 2023-02-09 | 2023-06-06 | 青岛富润达纺织有限公司 | Dye liquor process temperature following control method based on temperature speed adjustment |
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| US3787985A (en) * | 1972-08-14 | 1974-01-29 | Industrial Nucleonics Corp | Dryer control system and method |
| CN103054152A (en) * | 2012-12-28 | 2013-04-24 | 广东中烟工业有限责任公司 | Tobacco redryer moisture control method based on forecast Product Improve (PI) algorithm control system |
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2014
- 2014-05-22 CN CN201410217774.XA patent/CN104062989A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3787985A (en) * | 1972-08-14 | 1974-01-29 | Industrial Nucleonics Corp | Dryer control system and method |
| CN103054152A (en) * | 2012-12-28 | 2013-04-24 | 广东中烟工业有限责任公司 | Tobacco redryer moisture control method based on forecast Product Improve (PI) algorithm control system |
Non-Patent Citations (2)
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| 夏新民，郑兰霞，吴作勇: "烟叶复烤温湿度自动控制系统的分析", 《洛阳工学院学报》 * |
| 安淑玉: "烤片机微机控制系统的软件设计", 《烟草科技》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109549241A (en) * | 2018-12-29 | 2019-04-02 | 浙江中烟工业有限责任公司 | A kind of steam computer heating control model, steam method for heating and controlling applied to throwing cartridge type smoke machine |
| CN109549241B (en) * | 2018-12-29 | 2021-04-20 | 浙江中烟工业有限责任公司 | Steam heating control model and steam heating control method applied to tobacco shred manufacturing drum type cigarette making machine |
| CN116219665A (en) * | 2023-02-09 | 2023-06-06 | 青岛富润达纺织有限公司 | Dye liquor process temperature following control method based on temperature speed adjustment |
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Application publication date: 20140924 |