CN107145092A - intelligent positioner control method and device - Google Patents
intelligent positioner control method and device Download PDFInfo
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- CN107145092A CN107145092A CN201710492573.4A CN201710492573A CN107145092A CN 107145092 A CN107145092 A CN 107145092A CN 201710492573 A CN201710492573 A CN 201710492573A CN 107145092 A CN107145092 A CN 107145092A
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- valve position
- pulse
- cycle
- width adjustment
- intelligent positioner
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
Abstract
The invention provides a kind of intelligent positioner control method and device, it is related to intelligent positioner field, this method includes：Control device obtains the target valve position in intelligent positioner each cycle；During controlling the intelligent positioner to be moved to the target valve displacement, the valve position of intelligent positioner described in the initial time in each cycle is obtained, based on target valve position and valve position, the valve deviation in each cycle is obtained；Based on valve position, valve position deviation and the data pre-saved, the pulse-width adjustment information of the pulse-modulated signal of in the data pre-saved and valve position and the deviation matching of valve position in each cycle is obtained；Based on the pulse-width adjustment information, the valve position in each cycle is adjusted.With this method, control accuracy is improved, it is to avoid shake back and forth in dead band, it is impossible to be accurately positioned the defect of target.
Description
Technical field
The present invention relates to intelligent positioner field, in particular to a kind of intelligent positioner control method and device.
Background technology
For comparing traditional mechanical locator due to locator valve, with reaction is quick, model is simple, control essence
High series of advantages is spent, therefore, intelligent positioner replaces traditional mechanical valve to have become a kind of trend.
Fig. 1 is refer to, the basic theories of intelligent positioner is in control valve positions calculations are performed, by comparing control
The deviation △ P between (CMD) and valve position (POS) are ordered, △ P principal-employments or minus tolerance is judged, which piezoelectricity then selection controls
Valve does PWM actions.At present, the control method of intelligent positioner mainly has two kinds：One kind is theoretical based on PID, with fixed ratio
Example coefficient, three parameters of integral coefficient and differential coefficient are calculated, the unlimited deviation reduced between control command and valve position
Value, another is to use to have control of the intrinsic mill pace control piezo electric valve High-Medium-Low mode close to target.According to mesh
Preceding control mode, it is different for starting aperture, but aperture interval it is identical (for example from POS20% change to POS30% with from
POS30% changes to POS40%, and aperture interval is POS10%) change control, be substitute into aperture interval POS10% this
Individual value is solved equation, therefore, for changing to POS30% and for changing to POS40% from POS30%, solving from POS20%
The stroke rate of change V of the valve gone outXBe with change procedure it is the same, with the high electricity of pulse-modulated signal (PWM) pulse-width adjustment
(W between usuallyon) it is in proportional linear relationship.0
However, for intelligent positioner, be continually changing due to the pressure difference between its internal pressure and atmospheric pressure, its
Internal spring thrust F and valve stroke in non-linear relation, volume of cylinder change and valve stroke in nonlinear change and
The composite factors such as the influence to valve rod such as pipeline fluid, system friction, cause the stroke rate of change V of valveXWith PWM Won
In the absence of proportional linear relationship, therefore, according to traditional control method, target can not be quickly and accurately positioned by frequently resulting in
It is worth, causes that dead band is excessive, control accuracy is not high enough.
The content of the invention
In view of this, the purpose of the embodiment of the present invention is to provide a kind of intelligent positioner control method and device, with
Alleviate existing intelligent positioner control method exist can not be quickly and accurately positioned desired value, cause dead band it is excessive, control
The problem of precision processed is not high enough.
In a first aspect, the embodiments of the invention provide a kind of intelligent positioner control method, methods described includes：Control dress
Put the target valve position for obtaining the intelligent positioner；In the process for controlling the intelligent positioner to be moved to the target valve displacement
In, the valve position of intelligent positioner described in the initial time in each cycle is obtained, based on target valve position and valve position, is obtained
To the valve position deviation in each cycle；Based on valve position, valve position deviation and the data pre-saved, each cycle is obtained
The pulse-width adjustment for the pulse-modulated signal that in the interior data pre-saved and valve position and valve position deviation are matched
Information；Based on the pulse-width adjustment information, the valve position in each cycle is adjusted.
Second aspect, the embodiments of the invention provide a kind of Intelligent localizer control device, described device includes：First obtains
Modulus block, the target valve position for obtaining the intelligent positioner；Second acquisition module, for controlling the intelligent positioner
During being moved to the target valve displacement, the valve position of intelligent positioner described in the initial time in each cycle is obtained, based on institute
Target valve position and valve position are stated, the valve position deviation in each cycle is obtained；3rd acquisition module, for based on the valve position,
Valve position deviation and the data pre-saved, obtain in each cycle in the data pre-saved with valve position with
And the pulse-width adjustment information of the pulse-modulated signal of the valve position deviation matching；Adjusting module, for based on the pulse-width adjustment
Information, adjusts the valve position in each cycle.
Compared with prior art, various embodiments of the present invention are proposed intelligent positioner control method and the beneficial effect of device
It is really：Control device is based on institute by obtaining the target valve position, valve position and valve position deviation in each cycle of intelligent positioner
Valve position, valve position deviation and the data pre-saved are stated, the valve position in each cycle are adjusted, due to each cycle
It is interior, the valve position, valve position deviation are all based on, by the pressure of the corresponding different valve positions of same valve position deviation, frictional force single-candidate
Within the scope of other factor is accounted for, control accuracy is improved, it is to avoid shake back and forth in dead band, it is impossible to be accurately positioned target
Defect.
To enable the above objects, features and advantages of the present invention to become apparent, preferred embodiment cited below particularly, and coordinate
Appended accompanying drawing, is described in detail below.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be attached to what is used required in embodiment
Figure is briefly described, it will be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore is not construed as pair
The restriction of scope, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other related accompanying drawings.
Fig. 1 is the control principle drawing of the intelligent positioner of prior art；
Fig. 2 is the structured flowchart of control device provided in an embodiment of the present invention；
The flow chart for the intelligent positioner control method that Fig. 3 provides for first embodiment of the invention；
A kind of PWM for the intelligent positioner control method that Fig. 4 provides for first embodiment of the invention is optimal close to target valve
The schematic diagram of position；
Between the target valve position and actual valve position of the intelligent positioner control method that Fig. 5 provides for first embodiment of the invention
Dynamic tracing schematic diagram；
The structured flowchart for the Intelligent localizer control device that Fig. 6 provides for second embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Generally exist
The component of the embodiment of the present invention described and illustrated in accompanying drawing can be arranged and designed with a variety of configurations herein.Cause
This, the detailed description of the embodiments of the invention to providing in the accompanying drawings is not intended to limit claimed invention below
Scope, but it is merely representative of the selected embodiment of the present invention.Based on embodiments of the invention, those skilled in the art are not doing
The every other embodiment obtained on the premise of going out creative work, belongs to the scope of protection of the invention.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then it further need not be defined and explained in subsequent accompanying drawing.Meanwhile, the present invention's
In description, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that indicating or implying relative importance.
As shown in Fig. 2 being the block diagram of the control device 100.The control device 100 can be personal electricity
Brain (personal computer, PC), tablet personal computer etc..The control device 100 includes：Intelligent localizer control device,
It is memory 110, storage control 120, processor 130, Peripheral Interface 140, input-output unit 150, audio unit 160, aobvious
Show unit 170.
The memory 110, storage control 120, processor 130, Peripheral Interface 140, input-output unit 150, sound
Frequency unit 160 and each element of display unit 170 are directly or indirectly electrically connected with each other, with realize data transmission or
Interaction.It is electrically connected with for example, these elements can be realized by one or more communication bus or signal wire each other.The intelligence
Energy locator control device, which includes at least one, to be stored in the memory 110 in the form of software or firmware (firmware)
In or the software function module that is solidificated in the operating system of client device (operating system, OS).The processing
Device 130 is used to perform the executable module stored in memory 110, such as software that described Intelligent localizer control device includes
Functional module or computer program.
Wherein, memory 110 may be, but not limited to, random access memory (Random Access Memory,
RAM), read-only storage (Read Only Memory, ROM), programmable read only memory (Programmable Read-Only
Memory, PROM), erasable read-only memory (Erasable Programmable Read-Only Memory, EPROM),
Electricallyerasable ROM (EEROM) (Electric Erasable Programmable Read-Only Memory, EEPROM)
Deng.Wherein, memory 110 is used for storage program, and the processor 130 performs described program after execute instruction is received, preceding
Stating the server 200 of flow definition of any embodiment of embodiment of the present invention announcement, the method performed by control device 100 can be with
Realized applied in processor 130, or by processor 130.
Processor 130 is probably a kind of IC chip, the disposal ability with signal.Above-mentioned processor 130 can
To be general processor, including central processing unit (Central Processing Unit, abbreviation CPU), network processing unit
(Network Processor, abbreviation NP) etc.；Can also be digital signal processor (DSP), application specific integrated circuit (ASIC),
It is ready-made programmable gate array (FPGA) or other PLDs, discrete gate or transistor logic, discrete hard
Part component.It can realize or perform disclosed each method, step and the logic diagram in the embodiment of the present invention.General processor
Can be microprocessor or the processor can also be any conventional processor etc..
Various input/output devices are coupled to processor 130 and memory 110 by the Peripheral Interface 140.One
In a little embodiments, Peripheral Interface 140, processor 130 and storage control 120 can be realized in one single chip.At other
In some examples, they can be realized by independent chip respectively.
Input-output unit 150 is used to be supplied to user input data to realize interacting for user and control device 100.Institute
State input-output unit 150 may be, but not limited to, mouse and keyboard etc..
Audio unit 160 provides a user COBBAIF, and it may include one or more microphones, one or more raises
Sound device and voicefrequency circuit.
Display unit 170 provides an interactive interface (such as user interface) between control device 100 and user
Or referred to for display image data to user.In the present embodiment, the display unit 170 can be liquid crystal display or touch
Control display.If touch control display, it can be touched for the capacitance type touch control screen or resistance-type of support single-point and multi-point touch operation
Control screen etc..Single-point and multi-point touch operation is supported to refer to that touch control display can sense on the touch control display one or many
The touch control operation produced simultaneously at individual position, and transfer to processor 130 to be calculated and handled the touch control operation that this is sensed.
First embodiment
Fig. 3 is refer to, Fig. 3 is a kind of flow chart for intelligent positioner control method that first embodiment of the invention is provided,
Methods described is applied to control device.The flow shown in Fig. 3 will be described in detail below, methods described includes：
Step S110：Control device obtains the target valve position of the intelligent positioner.
Wherein, the intelligent positioner includes cylinder, piezo electric valve, unit head, position sensor, spring etc., intelligent positioning
Device changes the pressure in cylinder by the air-breathing and exhaust of piezo electric valve so that the valve position of intelligent positioner changes.
As a kind of embodiment, the control device can obtain data in advance, and using data as pre-saving
Data storage sets up database in internal memory, and accurate reference is provided for formal control.As another embodiment, the control
Device processed can also obtain a data when needing adjustment valve position every time.
Wherein, in the data can include the intelligent positioner whole numerical value valve position and with the valve position phase
The pulse-width adjustment information for the pulse-modulated signal (PWM) that corresponding all valve positions deviation matches, the pulse-width adjustment information causes
Intelligent positioner is most fast most accurately to reach target valve position, and Integral Thought is：Receive away from target valve position area signal, PWM's
High level time is Won overall heights, motion is most fast → receives close to target valve position area's signal (S is high), and PWM high level time is
Won decays, move it is slack-off → receive close to target valve position controlling dead error signal (in S), PWM high level time for Won most
Low amplitude, until being connected to motion stop signal (S is low), reaches target valve position.The intelligent positioner is according to the high --- -- S of Won
It is high --- --- in-Won --- -- in S --- -- the sequential movements low low --- -- S of Won, the time for high level of gradually decaying, until
Target valve position is reached, data are provided in Won height, Won for intelligent positioner, Won is low specific time and S height, S are obtained in advance
In, the low occurrences of S.
Further, for example, valve seat opening is 0, when valve position deviation is 5%, the PWM high level within each cycle
Time WonAnd WonHow should change, when start change, most fast most accurate can reach target valve position；Valve seat opening is
0, when valve position deviation is 10%, the PWM high level time W within each cycleonAnd WonHow should change, when open
Beginning change etc..For each valve seat opening numerical value, the pulsewidth of the pulse-modulated signal (PWM) comprising all valves position deviation is adjusted
Whole information, is no longer enumerated herein.
The data are produced under all component collective effect of intelligent positioner, contain all factors fixed to intelligence
The control characteristic of position device.
The control device and according to the input instruction, can obtain the intelligence in response to the input instruction of user
The target valve position of locator.For example, the percent travel of target valve position can be POS30%.
Step S120：During controlling the intelligent positioner to be moved to the target valve displacement, each cycle is obtained
Initial time described in intelligent positioner valve position, based on the target valve position and the valve position, obtain the valve in each cycle
Position deviation.
Control device can be with the predetermined movement cycle, and it is 20ms that can for example set the cycle.Control device is controlling the intelligence
During energy locator is moved to the target valve displacement, target valve position may be reached in a cycle, it is also possible to which needs are gone through
Target valve position is reached after multiple cycles.
Control device can obtain the valve position of the intelligent positioner in the initial time in each cycle, and by the target
Valve position makes the difference between the two with valve position, obtains the valve position deviation △ P in each cycle.
Exemplified by reaching target valve position after control device needs control intelligent positioner after multiple cycles, it is assumed that first
In cycle, the valve position got is POS5%, then the valve position deviation △ P1 within the period 1 are 25%, in second round
Interior, the valve position got is POS25%, then the valve position deviation △ P2 within the period 1 are 5%, within the period 3, are obtained
The valve position got is POS28%, then the valve position deviation △ P3 within the period 3 are 2%, the like.Until in a certain week
Phase valve position deviation △ Pn reach preset value, and the valve position of preset value sign intelligent positioner reaches the domain of walker of target valve position.
In addition, changing for the interval valve position of same aperture, it is understood that there may be the different situation of variation tendency, such as aperture
Interval is 10%, it may be possible to which initial valve position changes to target valve position 15% from 5%, it is also possible to changed to by initial valve position 15%
Target valve position 5%.Again due to different valve seat openings, the pressure in cylinder is different, along with other extra factors, such as bullet
Spring thrust and combined influence of the stroke in non-linear relation, pipeline and system friction etc., therefore, the pace of change of valve position
, there is many uncertainties, or even have a long way to go in difference.
Therefore, as a kind of embodiment, the control device obtains intelligent positioning described in the initial time in each cycle
The valve position of device, based on target valve position and valve position, can obtain valve position deviation and the change in each cycle
Trend.The variation tendency includes being altered to high threshold position from low valve position and is altered to low valve position from high threshold position.
Correspondingly, include in the data pre-saved and valve position, variation tendency and valve position deviation
The pulse-width adjustment information for the pulse-modulated signal matched somebody with somebody.
Step S130：Based on valve position, valve position deviation and the data pre-saved, institute in each cycle is obtained
State the pulse-width adjustment information of the pulse-modulated signal of in the data pre-saved and valve position and the deviation matching of valve position.
It is worthy of note that, in embodiments of the present invention, being different from the feature of prior art at least includes：It is each obtaining
In cycle during PWM pulse-width adjustment information, interior work as, is at least played based on the valve position deviation in each week and each week simultaneously
Preceding valve position.It is identical for aperture interval that the distinguishing feature avoids conventional art, but starting aperture it is different (for example from
POS20% changes to POS30% and changes to POS40% from POS30%, and aperture interval is POS10%) use phase
Same pulse-width adjustment information so that intelligent positioner can not be quickly and accurately positioned desired value, shake back and forth, and control accuracy is not high
The problem of.
Step S140：Based on the pulse-width adjustment information, the valve position in each cycle is adjusted.
The control device is based on the pulse-width adjustment information so that the speed of the piezo electric valve of the intelligent positioner is from height
Speed decays to middling speed and decays to low speed again, until reaching the target valve position.
The pulse-width adjustment information includes the pulse-width adjustment high level time (W of pulse-modulated signalon) and high level change
Change time S, the high level transformation period is corresponding with the pulse-width adjustment high level time, for characterizing the pulse-width adjustment
High level is changed into low level, and the control device adjusts the pressure of the intelligent positioner based on the pulse-width adjustment high level time
The speed of electric valve, based on the high level transformation period, adjusts the pace of change of the piezo electric valve speed.
Certainly, because the variation of valve position is the pulse-width adjustment high level time (W by PWMon) energy accumulation process, one
In the individual cycle, the change of valve position may not be seen, therefore, Fig. 4 is refer to, in practice, it is understood that there may be the situation shown in Fig. 4：
I.e. by the pulse-width adjustment information, before obtaining in several cycles, pulse-modulated signal is W entirelyon, after some cycles, energy
Amount is accumulated to certain value, and the opening speed of cylinder is most fast, and valve position is changed with prestissimo, since some cycle, WonStart to decline
Subtract, until to closest to target valve position, the W in a cycleonReach minimum width.
In addition, the target valve position can also be changing value in addition to being fixed value.When target valve position is changing value,
The scheme that the embodiment of the present invention is provided is equally applicable.Fig. 5 is refer to, Fig. 5 shows target valve position (CMD) and actual valve position
Between dynamic tracing schematic diagram, in tracing process, optimal effect is that valve position deviation △ P between the two reach all the time
To minimum value.By calculating, using this method, valve position deviation △ P precision highests between the two can reach 0.1%, raising
Precision.
The beneficial effect of a kind of intelligent positioner control method that first embodiment of the invention is provided is：Control device passes through
The target valve position, valve position and valve position deviation in each cycle of intelligent positioner are obtained, and based on valve position, valve position partially
Difference and the data pre-saved, are matched and valve position, the tool of valve position deviation in the data pre-saved
The optimal motor pattern of body value adjusts the valve position in each cycle, due in each cycle, being all based on the valve position, described
Valve position deviation, within the scope of the extra factors such as pressure, the frictional force of the corresponding different valve positions of same valve position deviation are accounted for,
Improve control accuracy, it is to avoid shake back and forth in dead band, it is impossible to be accurately positioned the defect of target.
Second embodiment
Fig. 6 is refer to, Fig. 6 is a kind of structure for Intelligent localizer control device 400 that second embodiment of the invention is provided
Block diagram.The structured flowchart shown in Fig. 6 will be illustrated below, shown device includes：First acquisition module 410, second is obtained
Module 420, the 3rd acquisition module 430 and adjusting module 440.
First acquisition module 410, the target valve position for obtaining the intelligent positioner.
Second acquisition module 420, for during controlling the intelligent positioner to be moved to the target valve displacement, obtaining
The valve position of intelligent positioner described in the initial time in each cycle is taken, based on target valve position and valve position, obtains every
The valve position deviation in one cycle.
3rd acquisition module 430, for based on valve position, valve position deviation and the data pre-saved, obtaining
The pulse-modulated signal of in the data pre-saved and valve position and the deviation matching of valve position in each cycle
Pulse-width adjustment information.
Include in the data pre-saved and valve position, variation tendency and the deviation matching of valve position pulse
The pulse-width adjustment information of modulated signal, the variation tendency includes being altered to high threshold position from low valve position and is altered to from high threshold position
Low valve position.3rd acquisition module 430, the valve specifically for obtaining intelligent positioner described in the initial time in each cycle
Position, based on target valve position and valve position, obtains the valve position deviation and the variation tendency in each cycle.
Adjusting module 440, for based on the pulse-width adjustment information, adjusting the valve position in each cycle.
Specifically, the adjusting module 440, for based on the pulse-width adjustment information so that the intelligent positioner
The speed of piezo electric valve decays to middling speed from high speed and decays to low speed again, until reaching the target valve position.
When the pulse-width adjustment information includes pulse-width adjustment high level time and the high level change of pulse-modulated signal
Between, the high level transformation period is corresponding with the pulse-width adjustment high level time, for characterizing the high electricity of the pulse-width adjustment
It is flat to be changed into low level.The adjusting module 440 can adjust the intelligent positioner based on the pulse-width adjustment high level time
Piezo electric valve speed, based on the high level transformation period, adjust the pace of change of the piezo electric valve speed.
The process of the respective function of each Implement of Function Module for the device 400 that the present embodiment is controlled intelligent positioner, please join
Above-mentioned Fig. 2 is seen to the content described in embodiment illustrated in fig. 5, and here is omitted.
In summary, the embodiment of the present invention is proposed intelligent positioner control method and device, pass through the present invention first
The beneficial effect of a kind of intelligent positioner control method that embodiment is provided is：Control device is by obtaining the every of intelligent positioner
Target valve position, valve position and the valve position deviation in one cycle, and based on valve position, valve position deviation and the number pre-saved
According to being matched in the data pre-saved and valve position, the optimal motor pattern of occurrence of valve position deviation
The valve position in each cycle is adjusted, control accuracy is improved, it is to avoid shake back and forth in dead band, it is impossible to be accurately positioned target
Defect.
In several embodiments provided herein, it should be understood that disclosed apparatus and method, it can also pass through
Other modes are realized.Device embodiment described above is only schematical, for example, flow chart and block diagram in accompanying drawing
Show according to the device of multiple embodiments of the present invention, the architectural framework in the cards of method and computer program product,
Function and operation.At this point, each square frame in flow chart or block diagram can represent the one of a module, program segment or code
Part a, part for the module, program segment or code is used to realize holding for defined logic function comprising one or more
Row instruction.It should also be noted that in some implementations as replacement, the function of being marked in square frame can also with different from
The order marked in accompanying drawing occurs.For example, two continuous square frames can essentially be performed substantially in parallel, they are sometimes
It can perform in the opposite order, this is depending on involved function.It is also noted that every in block diagram and/or flow chart
The combination of individual square frame and block diagram and/or the square frame in flow chart, can use the special base for performing defined function or action
Realize, or can be realized with the combination of specialized hardware and computer instruction in the system of hardware.
In addition, each functional module in each embodiment of the invention can integrate to form an independent portion
Point or modules individualism, can also two or more modules be integrated to form an independent part.
If the function is realized using in the form of software function module and is used as independent production marketing or in use, can be with
It is stored in a computer read/write memory medium.Understood based on such, technical scheme is substantially in other words
The part contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are to cause a computer equipment (can be individual
People's computer, server, or network equipment etc.) perform all or part of step of each of the invention embodiment methods described.
And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.Need
Illustrate, herein, such as first and second or the like relational terms be used merely to by an entity or operation with
Another entity or operation make a distinction, and not necessarily require or imply between these entities or operation there is any this reality
The relation or order on border.Moreover, term " comprising ", "comprising" or its any other variant are intended to the bag of nonexcludability
Contain, so that process, method, article or equipment including a series of key elements are not only including those key elements, but also including
Other key elements being not expressly set out, or also include for this process, method, article or the intrinsic key element of equipment.
In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that including the key element
Process, method, article or equipment in also there is other identical element.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.It should be noted that：Similar label and letter exists
Similar terms is represented in following accompanying drawing, therefore, once being defined in a certain Xiang Yi accompanying drawing, is then not required in subsequent accompanying drawing
It is further defined and explained.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (10)
1. a kind of intelligent positioner control method, it is characterised in that methods described includes：
Control device obtains the target valve position in intelligent positioner each cycle；
During controlling the intelligent positioner to be moved to the target valve displacement, described in the initial time for obtaining each cycle
The valve position of intelligent positioner, based on target valve position and valve position, obtains the valve position deviation in each cycle；
Based on valve position, valve position deviation and the data pre-saved, obtain what is pre-saved described in each cycle
The pulse-width adjustment information of the pulse-modulated signal of in data and valve position and the deviation matching of valve position；
Based on the pulse-width adjustment information, the valve position in each cycle is adjusted.
2. according to the method described in claim 1, it is characterised in that include in the data pre-saved with valve position,
The pulse-width adjustment information of variation tendency and the pulse-modulated signal of valve position deviation matching, the variation tendency is included from low
Valve position is altered to high threshold position and is altered to low valve position from high threshold position；It is intelligently fixed described in the initial time for obtaining each cycle
The valve position of position device, based on target valve position and valve position, obtains the valve position deviation in each cycle, including：
The control device obtains the valve position of intelligent positioner described in the initial time in each cycle, based on target valve position with
And the valve position, obtain the valve position deviation and the variation tendency in each cycle.
3. according to the method described in claim 1, it is characterised in that described to be based on the pulse-width adjustment information, adjust each week
Valve position in phase, including：
The control device is based on the pulse-width adjustment information so that the speed of the piezo electric valve of the intelligent positioner declines from high speed
Reduce to middling speed and decay to low speed again, until reaching the target valve position.
4. according to the method described in claim 1, it is characterised in that the pulse-width adjustment information includes the arteries and veins of pulse-modulated signal
Width adjustment high level time and high level transformation period, the high level transformation period and the pulse-width adjustment high level time
It is corresponding, it is changed into low level for characterizing the pulse-width adjustment high level, the control device is based on the high electricity of the pulse-width adjustment
The speed of the piezo electric valve of the intelligent positioner is adjusted between usually, based on the high level transformation period, the piezo electric valve is adjusted
Speed pace of change.
5. according to the method described in claim 1, it is characterised in that the control device is obtained before target valve position, the side
Method includes：
The control device obtains data, and the data include the valve position of whole numerical value and the institute corresponding with valve position
There is the pulse-width adjustment information of pulse-modulated signal that valve position deviation matches.
6. according to the method described in claim 1, it is characterised in that dynamic change is presented in the target valve position.
7. a kind of Intelligent localizer control device, it is characterised in that described device includes：
First acquisition module, the target valve position for obtaining the intelligent positioner；
Second acquisition module, for during controlling the intelligent positioner to be moved to the target valve displacement, obtaining each
The valve position of intelligent positioner described in the initial time in cycle, based on target valve position and valve position, obtains each cycle
Valve position deviation；
3rd acquisition module, for based on valve position, valve position deviation and the data pre-saved, obtaining each cycle
The pulse-width adjustment for the pulse-modulated signal that in the interior data pre-saved and valve position and valve position deviation are matched
Information；
Adjusting module, for based on the pulse-width adjustment information, adjusting the valve position in each cycle.
8. device according to claim 7, it is characterised in that include in the data pre-saved with valve position,
The pulse-width adjustment information of variation tendency and the pulse-modulated signal of valve position deviation matching, the variation tendency is included from low
Valve position is altered to high threshold position and is altered to low valve position, the 3rd acquisition module, for obtaining each cycle from high threshold position
The valve position of intelligent positioner described in initial time, based on target valve position and valve position, obtains the described of each cycle
Valve position deviation and the variation tendency.
9. device according to claim 7, it is characterised in that the adjusting module, for based on pulse-width adjustment letter
Breath so that the speed of the piezo electric valve of the intelligent positioner decays to middling speed from high speed and decays to low speed again, until reaching described
Target valve position.
10. device according to claim 7, it is characterised in that the pulse-width adjustment information includes pulse-modulated signal
Pulse-width adjustment high level time and high level transformation period, when the high level transformation period is with the pulse-width adjustment high level
Between it is corresponding, be changed into low level for characterizing the pulse-width adjustment high level, it is high that the adjusting module is based on the pulse-width adjustment
Level time adjusts the speed of the piezo electric valve of the intelligent positioner, based on the high level transformation period, adjusts the piezoelectricity
The pace of change of the speed of valve.
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| CN108843852A (en) * | 2018-07-03 | 2018-11-20 | 中国科学院合肥物质科学研究院 | A kind of intelligent valve positioner dead zone automatic setting method |
| CN109765943A (en) * | 2019-01-14 | 2019-05-17 | 东北大学 | A kind of furnace fuel valve pulse optimization control device and method |
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| Publication number | Publication date |
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| CN107145092B (en) | 2019-06-18 |
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