CN108016899A - A kind of overturning stability of flow control method - Google Patents
A kind of overturning stability of flow control method Download PDFInfo
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- CN108016899A CN108016899A CN201711234073.7A CN201711234073A CN108016899A CN 108016899 A CN108016899 A CN 108016899A CN 201711234073 A CN201711234073 A CN 201711234073A CN 108016899 A CN108016899 A CN 108016899A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G67/00—Loading or unloading vehicles
- B65G67/02—Loading or unloading land vehicles
- B65G67/24—Unloading land vehicles
- B65G67/32—Unloading land vehicles using fixed tipping installations
- B65G67/48—Vehicle tipplers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/02—Control or detection
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Control Of Conveyors (AREA)
Abstract
The invention discloses a kind of overturning stability of flow control method, comprise the following steps：（1）Delay process；（2）Model foundation is distributed with initiation parameter；（3）Autofeed parameter estimate modification strategy：It is fed adjustment of the adjustment of flow depending on funnel driven by vibrating motors speed；Adjust formula Vt=K*Vi；Vi values are basic speed parameter, and K values are speed proportional coefficient；（4）Balanced feed schemes optimization：Using five funnel material position distributions are compared in a compares cycle t, the values of factor K of low material position bucket is reduced into certain value, the value of reduction is added in the K values of high charge level；Both it can guarantee that the stabilization of flow, and also can guarantee that the balance of each funnel material position, and overturning circulation is performed according to the time cycle of regulation.The present invention can effective compensation delay component, adapt to various coal operating modes, greatly improve the stability and operating efficiency of autofeed.
Description
Technical field
The present invention relates to tippler autofeed technical field, is specifically a kind of overturning stability of flow control method.
Background technology
Tippler feeding system mainly uses operator's manual typing vibra feeder frequency converter output frequency in real time at present
The mode of value with control feed collect after Belt Flow stablize and each funnel feed balance.A large amount of manpowers are not only expended,
And operation effectiveness places one's entire reliance upon the qualification of operating personnel, and influence to automate the follow-up planning of turning system.Cause
This, a set of substitution manually controls the gravity system of feeding system just to have very much application value.In current equipment and
Under operating condition, the realization of gravity system is primarily present following technological difficulties：
（1）Belt Flow detects hysteresis quality
In tippler gravity system, controlled quentity controlled variable is setting flow, and controlled volume is the Belt Flow of belt conveyer scale feedback, from setting
The flow of constant flow to feedback will pass through analog output module（Or bus communication）, frequency converter, vibrating feed motor, belt feeder
Belt conveyer scale is arrived again.General pure delay time is in more than 15s, therefore before the actual flow that is fed back of belt conveyer scale is in fact lag time
Setting flow.This technological process determines that hysteresis is inevitable, flow cannot reponse system is born in time disturbance can produce
Raw obvious overshoot so that stability of control system is deteriorated, and regulating time is long, system control difficulty increase.
（2）Coal diversity
Up to tens kinds of coal during due to operation, different types of coal density differ, and same coal is close when water content is inconsistent
Degree also differs greatly, and can also produce the flow difference of up to hundreds of ton hours in the timing of batcher feeding coal one, it is difficult to control
System establishes static mathematical model.
The content of the invention
It is an object of the invention to provide a kind of overturning stability of flow control method, to solve to propose in above-mentioned background technology
The problem of.
To achieve the above object, the present invention provides following technical solution：
A kind of overturning stability of flow control method, comprises the following steps：
（1）Delay process
Due to the hysteresis quality of measured value, system will be produced big fluctuation by producing the instant adjustment after error；Adjusted by adding
Cycle T is not answered to skip measured value lag time afterwards；T values can have corresponding change according to flow Real-time Error value Vr；Vr is bigger,
T values are bigger, on the contrary then smaller；
（2）Model foundation is distributed with initiation parameter
Since coal is non-linear and diversity, coal test will be carried out when equipment starts every time, current coal is measured first and exists
The flow value reached in a period of time is run under common model, then the setting required coefficient of flow is extrapolated by proportionate relationship
With then sorted according to the material position of five funnels height, obtain an input and output and correspond to relation table；It will be surveyed in actual job
Input and output are obtained compared with built coal parameter, coal typical coefficient is suitably increasedd or decreased, approaches institute's established model；
（3）Autofeed parameter estimate modification strategy
It is fed adjustment of the adjustment of flow depending on funnel driven by vibrating motors speed；
Adjust formula Vt=K*Vi；
Vi values are basic speed parameter, and K values are speed proportional coefficient；
The system operation starting stage can establish parameter model, obtain a set of current coal initial rate parameter；Will feedback flow with
The error amount classification of flow is set, for the error of different stage, different K adjusted values is established, enables actual flow quickly steady
It is fixed close to setting flow；
Since the density of different types of coal is different, using identical basal rate, flow adjustment can be made to become unstable, when K values connect
When nearly 1.5, actual flow also not close to setting flow, then increases basal rate value；When actual flow beyond setting flow it is excessive,
Basal rate value will be reduced, while corresponding classification is also had relative to different basal rate values, the adjusted value of K, Vi is smaller,
K adjusted values are bigger, on the contrary then smaller；
（4）Balanced feed schemes optimization
Using five funnel material position distributions are compared in a compares cycle t, the values of factor K of low material position bucket is reduced into certain value, is subtracted
Few value is added in the K values of high charge level；Both it can guarantee that the stabilization of flow, and also can guarantee that the balance of each funnel material position, follow overturning
Ring is performed according to the time cycle of regulation.
As the further scheme of the present invention：Step（3）The middle flow that will feed back is classified as with setting the error amount of flow：Greatly
- 100t/h is arrived in 700t/h, 500t/h to 700t/h, 300t/h to 500t/h, 100t/h to 300t/h, -200t/h.
As further scheme of the invention：Step（3）Described in K values be set as the adjustable extent of 0.5-1.5.
As further scheme of the invention：Step（3）It is middle that the basal rate is set as 2000t/h-2700t/h
Adjustable extent.
Compared with prior art, the beneficial effects of the invention are as follows：Can effective compensation delay component, adapt to various coal works
Condition, greatly improves the stability and operating efficiency of autofeed.
Brief description of the drawings
Fig. 1 is the system flow chart of overturning stability of flow control method.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
Referring to Fig. 1, in the embodiment of the present invention, a kind of overturning stability of flow control method, comprises the following steps：
（1）Delay process
Due to the hysteresis quality of measured value, system will be produced big fluctuation by producing the instant adjustment after error；Adjusted by adding
The cycle is not answered afterwards（T）To skip measured value lag time；T values can be according to flow Real-time Error value（Vr）There is corresponding change；Vr
Bigger, T values are bigger, on the contrary then smaller.
（2）Model foundation is distributed with initiation parameter
Since coal is non-linear and diversity, coal test will be carried out when equipment starts every time, current coal is measured first and exists
The flow value reached in a period of time is run under common model, then the setting required coefficient of flow is extrapolated by proportionate relationship
With then sorted according to the material position of five funnels height, obtain an input and output and correspond to relation table；It will be surveyed in actual job
Input and output are obtained compared with built coal parameter, coal typical coefficient is suitably increasedd or decreased, approaches institute's established model.
（3）Autofeed parameter estimate modification strategy
It is fed adjustment of the adjustment of flow depending on funnel driven by vibrating motors speed；
Adjust formula Vt=K*Vi；
Vi values are basic speed parameter, and K values are speed proportional coefficient；
The system operation starting stage can establish parameter model [（2）Introduce], obtain a set of current coal initial rate parameter；Will be anti-
Present flow and be classified with setting the error amount of flow, such as larger than 700t/h；500t/h to 700t/h；300t/h to 500t/h；100t/
H to 300t/h；- 200t/h to -100t/h etc.；For the error of different stage, different K adjusted values are established, make actual flow
Can fast and stable close to setting flow；K values will also set an adjustable extent such as（0.5-1.5）.
Since the density of different types of coal is different, using identical basal rate, flow adjustment can be made to become unstable, by base
Plinth speed sets an adjustable extent such as（2000t/h-2700t/h）.When K values are close to 1.5, actual flow is not also close to setting
Flow, then increase basal rate value；When actual flow beyond setting flow it is excessive, will reduce basal rate value.While relative to
Different basal rate values, the adjusted value of K also have corresponding classification, and Vi is smaller, and K adjusted values are bigger, on the contrary then smaller.
（4）Balanced feed schemes optimization
Tippler has five funnels to be fed at the same time, and tippler upset unloading cannot be guaranteed that five funnels are evenly distributed, and may cause
The single cycle later stage has the empty material of funnel to cause flow to decline, other funnel material positions are higher to influence circulation of overturning, and reduces operating efficiency.Adopt
With a compares cycle（t）Interior five funnel material position distributions of comparison, certain value is reduced by the values of factor K of low material position bucket, reduction
Value is added in the K values of high charge level；Both can guarantee that the stabilization of flow, and also can guarantee that the balance of each funnel material position, make overturning circulation by
Performed according to the defined time cycle.
The present invention method can effective compensation delay component, adapt to various coal operating modes, greatly improve autofeed
Stability and operating efficiency.
The tippler feeding system composition that the port enterprise of specialization handling uses includes the funnel of storage material, discharging is moved
The how many level sensor of material, the belt conveyer scale of mass flow metering, detectable substance in power apparatus vibra feeder, detection funnel
Stream switch and the belt feeder of conveying material that stream is moved etc..
The effect of each part is as follows:
Store the funnel of material：The material gone out for keeping in tippler dumping, usually can store the material in 4 section compartments；
Discharging power set vibra feeder：For the belt feeder being transported to the material kept in funnel below funnel, lead to
Normal setting-up eccentricity cam motor, by transducer drive；
The level sensor that material is how many in funnel detected：By the weighing sensor and relevant control installed on the bearing of funnel base angle
Device forms, for detecting the weight of material in funnel；
The belt conveyer scale of mass flow metering：By the load weighing sensor and correlation intergal instrument installed on roller bracket of belt conveyor
Composition, the instantaneous weight of material is conveyed for calculating on belt feeder；
Detect the stream switch of Flow of Goods and Materials：Whether general inclination mercoid switch, deposit for detecting on funnel vibra feeder
In material；
Convey the belt feeder of material：The material that vibra feeder exports is transported to remote device.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference numeral in claim should not be considered as to the involved claim of limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical solution, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (4)
1. a kind of overturning stability of flow control method, it is characterised in that comprise the following steps：
（1）Delay process
Due to the hysteresis quality of measured value, system will be produced big fluctuation by producing the instant adjustment after error；Adjusted by adding
Cycle T is not answered to skip measured value lag time afterwards；T values can have corresponding change according to flow Real-time Error value Vr；Vr is bigger,
T values are bigger, on the contrary then smaller；
（2）Model foundation is distributed with initiation parameter
Since coal is non-linear and diversity, coal test will be carried out when equipment starts every time, current coal is measured first and exists
The flow value reached in a period of time is run under common model, then the setting required coefficient of flow is extrapolated by proportionate relationship
With then sorted according to the material position of five funnels height, obtain an input and output and correspond to relation table；It will be surveyed in actual job
Input and output are obtained compared with built coal parameter, coal typical coefficient is suitably increasedd or decreased, approaches institute's established model；
（3）Autofeed parameter estimate modification strategy
It is fed adjustment of the adjustment of flow depending on funnel driven by vibrating motors speed；
Adjust formula Vt=K*Vi；
Vi values are basic speed parameter, and K values are speed proportional coefficient；
The system operation starting stage can establish parameter model, obtain a set of current coal initial rate parameter；Will feedback flow with
The error amount classification of flow is set, for the error of different stage, different K adjusted values is established, enables actual flow quickly steady
It is fixed close to setting flow；
Since the density of different types of coal is different, using identical basal rate, flow adjustment can be made to become unstable, when K values connect
When nearly 1.5, actual flow also not close to setting flow, then increases basal rate value；When actual flow beyond setting flow it is excessive,
Basal rate value will be reduced, while corresponding classification is also had relative to different basal rate values, the adjusted value of K, Vi is smaller,
K adjusted values are bigger, on the contrary then smaller；
（4）Balanced feed schemes optimization
Using five funnel material position distributions are compared in a compares cycle t, the values of factor K of low material position bucket is reduced into certain value, is subtracted
Few value is added in the K values of high charge level；Both it can guarantee that the stabilization of flow, and also can guarantee that the balance of each funnel material position, follow overturning
Ring is performed according to the time cycle of regulation.
2. overturning stability of flow control method according to claim 1, it is characterised in that step（3）In will feed back flow
Error amount with setting flow is classified as：Arrived more than 700t/h, 500t/h to 700t/h, 300t/h to 500t/h, 100t/h
300t/h, -200t/h arrive -100t/h.
3. overturning stability of flow control method according to claim 1, it is characterised in that step（3）Described in K values setting
For the adjustable extent of 0.5-1.5.
4. overturning stability of flow control method according to claim 1, it is characterised in that step（3）It is middle by the basis
Speed is set as the adjustable extent of 2000t/h-2700t/h.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711234073.7A CN108016899A (en) | 2017-11-30 | 2017-11-30 | A kind of overturning stability of flow control method |
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| CN201711234073.7A CN108016899A (en) | 2017-11-30 | 2017-11-30 | A kind of overturning stability of flow control method |
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| CN108016899A true CN108016899A (en) | 2018-05-11 |
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| CN201711234073.7A Withdrawn CN108016899A (en) | 2017-11-30 | 2017-11-30 | A kind of overturning stability of flow control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114476580A (en) * | 2021-11-29 | 2022-05-13 | 冶金自动化研究设计院 | Control method for full-automatic feeding of car dumper |
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Application publication date: 20180511 |