CN107777416A - A kind of constant tension control system based on fuzzy - Google Patents
A kind of constant tension control system based on fuzzy Download PDFInfo
- Publication number
- CN107777416A CN107777416A CN201610733884.0A CN201610733884A CN107777416A CN 107777416 A CN107777416 A CN 107777416A CN 201610733884 A CN201610733884 A CN 201610733884A CN 107777416 A CN107777416 A CN 107777416A
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- China
- Prior art keywords
- control system
- fuzzy
- tension
- pid
- control
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
- B65H23/182—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in unwinding mechanisms or in connection with unwinding operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
- B65H2515/30—Forces; Stresses
- B65H2515/31—Tensile forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
- B65H2557/20—Calculating means; Controlling methods
- B65H2557/264—Calculating means; Controlling methods with key characteristics based on closed loop control
- B65H2557/2644—Calculating means; Controlling methods with key characteristics based on closed loop control characterised by PID control
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- Feedback Control In General (AREA)
Abstract
A kind of constant tension control system based on fuzzy, mainly grown stream valve, hydraulic motor, tensometer, programmable controller by variable pump, taste stream valve, ratio and formed.The control system employs Fuzzy PID and system is controlled, and realizes the online self-tuning of pid control parameter, Fuzzy PID Control System is accordingly faster than regulatory PID control system, and adjustment capability is strong, and robustness is good, effectively improves control effect.
Description
Art
The present invention relates to a kind of constant tension control system based on fuzzy, suitable for mechanical field.
Background technology
In the production process of compacting and the curling of band, processed band or silk material are always placed on machine in rolls
On, then band is mentioned Continuous maching is carried out at processing.In process, former material material volume causes tractive force through constantly reducing
Square also constantly reduces, and need to constantly adjust spring pressure, and tension fluctuation is larger, and the influence to crudy and precision is very big.In order to
Ensure that the tension force of band is maintained on set-point, its tension force must be detected in process of production.In order to improve product
Quality and quality, it is highly important to select a kind of suitable control system.Traditional PID controller is simple in construction, robustness
It is relatively strong, but contradiction be present between tracking fixed valure and disturbance suppression ability, prevent system from obtaining optimal control effect.
The content of the invention
The present invention proposes a kind of constant tension control system based on fuzzy, employs Fuzzy PID to being
System control, realizes the online self-tuning of pid control parameter, and Fuzzy PID Control System is accordingly faster than regulatory PID control system, adjusts
Whole ability is strong, and robustness is good, effectively improves control effect.
The technical solution adopted in the present invention is.
The control system mainly grows stream valve, hydraulic motor, tensometer, PLC technology by variable pump, taste stream valve, ratio
Device forms.
The tension force of the rolled strip examines the size of side strap tension by tension sensor, and by tension sensor
Feedback signal make a gift to someone into PLC so that control system constitutes a closed-loop control system.Feedback signal and given letter
Number it is compared, obtained deviation signal obtains controlled quentity controlled variable by controller computing, and current signal is converted to through proportional amplifier,
Feeding ratio grows stream valve, and control ratio grows the inlet pressure of stream valve, you can changes the inlet pressure of hydraulic motor, to adapt to tension force
The needs of change.
The fuzzy selftuning PID that the control system uses is on the basis of pid control algorithm, by calculating current system
System erroreAnd error rateec, fuzzy reasoning is carried out using fuzzy rule, inquiry mould cangue matrix table carries out parameter adjustment,
So as to reach the most controlled purpose of system.
The beneficial effects of the invention are as follows：Fuzzy controller is used in the control system, is realized to tri- controls of PID
The online self-tuning of parameter, selects optimization control parameter, the rapid dynamic response speed of system, and adaptivity is good.
Brief description of the drawings
Fig. 1 is the electric-hydraulic proportion constant tension control system schematic diagram of the present invention.
Fig. 2 is its schematic diagram of the Fuzzy Adaptive PID Control of the present invention.
In figure：1. constant displacement pump；2. tensometer；3. reel；4. motor；5. proportional pressure control valve.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Such as Fig. 1, control system mainly grows stream valve, hydraulic motor, tensometer, programmable control by variable pump, taste stream valve, ratio
Device composition processed.Keeping constant tension, then the ratio between the pressure difference between the oil inlet and outlet of hydraulic motor and reel radius should keep constant,
The return pressure of hydraulic motor is equal to zero, so only needing for controlling the input pressure of motor accurately to control band
Power size, so that control tension force F is remained in a constant value.The tension force of rolled strip passes through tension sensor
To examine the size of continent strap tension.And the feedback signal of tension sensor is sent in PLC, so that control system structure
Into a closed-loop control system.For feedback signal compared with Setting signal, obtained deviation signal passes through controller computing
Controlled quentity controlled variable is obtained, current signal is converted to through proportional amplifier, ratio of being sent into grows stream valve, and control ratio grows the inlet-pressure of stream valve
Power, you can change the inlet pressure of hydraulic motor, to adapt to the needs of tension variation.
The tension force of rolled strip examines the size of side strap tension by tension sensor, and by the anti-of tension sensor
Feedback signal is made a gift to someone into PLC, so that control system constitutes a closed-loop control system.Feedback signal is entered with Setting signal
Row compares, and obtained deviation signal obtains controlled quentity controlled variable by controller computing, current signal is converted to through proportional amplifier, is sent into
Ratio grows stream valve, and control ratio grows the inlet pressure of stream valve, you can changes the inlet pressure of hydraulic motor, to adapt to tension variation
Needs.
Such as Fig. 2, fuzzy control is the control experience and knowledge based on operator or expert, and control rule are expressed as with language
Then, control system is gone with these rules.Therefore fuzzy control is non-especially suitable for being difficult to acquisition mathematical models or model
The control of often coarse complication system.The fuzzy selftuning PID that control system uses is on the basis of pid control algorithm, is led to
Cross calculating current system erroreAnd error rateec, fuzzy reasoning is carried out using fuzzy rule, inquiry mould cangue matrix table enters
Row parameter adjustment, so as to reach the most controlled purpose of system.
The characteristics of real-time is good is required according to control system, fuzzy decision is carried out using maximum membership degree method, that is to say, that
The maximum domain element of degree of membership is chosen from output fuzzy set as controlled quentity controlled variable, the scale factor of output quantity is multiplied by, determinesΔK p、ΔK iWithΔK dClear amount after sharpening.Clear amount will be obtained to be added with the basic value of control parameter as final
Pid control parameter.
Claims (3)
1. a kind of constant tension control system based on fuzzy, it is characterized in that：The control system is mainly flowed by variable pump, taste
Valve, ratio grow stream valve, hydraulic motor, tensometer, programmable controller composition.
2. a kind of constant tension control system based on fuzzy according to claim 1, it is characterized in that：The rolled bands
The tension force of material examines the size of side strap tension by tension sensor, and by the feedback signal of tension sensor make a gift to someone to
In PLC, so that control system constitutes a closed-loop control system.
3. a kind of constant tension control system based on fuzzy according to claim 1, it is characterized in that：The control system
The fuzzy selftuning PID that system uses is on the basis of pid control algorithm, by calculating current system erroreAnd error change
Rateec, fuzzy reasoning is carried out using fuzzy rule, inquiry mould cangue matrix table carries out parameter adjustment, most has control so as to reach system
The purpose of system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610733884.0A CN107777416A (en) | 2016-08-28 | 2016-08-28 | A kind of constant tension control system based on fuzzy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610733884.0A CN107777416A (en) | 2016-08-28 | 2016-08-28 | A kind of constant tension control system based on fuzzy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107777416A true CN107777416A (en) | 2018-03-09 |
Family
ID=61438839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610733884.0A Pending CN107777416A (en) | 2016-08-28 | 2016-08-28 | A kind of constant tension control system based on fuzzy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107777416A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110380359A (en) * | 2019-07-09 | 2019-10-25 | 西南交通大学 | A kind of railcar for Metro Cable laying |
| CN110380360A (en) * | 2019-07-09 | 2019-10-25 | 西南交通大学 | Facilitate the constructing metro tunnel railcar for realizing regular cable laying |
| CN110380359B (en) * | 2019-07-09 | 2024-06-11 | 西南交通大学 | Railway vehicle for subway cable laying |
-
2016
- 2016-08-28 CN CN201610733884.0A patent/CN107777416A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110380359A (en) * | 2019-07-09 | 2019-10-25 | 西南交通大学 | A kind of railcar for Metro Cable laying |
| CN110380360A (en) * | 2019-07-09 | 2019-10-25 | 西南交通大学 | Facilitate the constructing metro tunnel railcar for realizing regular cable laying |
| CN110380360B (en) * | 2019-07-09 | 2024-03-08 | 西南交通大学 | Subway tunnel construction railcar convenient to realize regular cable laying |
| CN110380359B (en) * | 2019-07-09 | 2024-06-11 | 西南交通大学 | Railway vehicle for subway cable laying |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180309 |