CN110526122A - A kind of stagnant ring compensation method of pump control system main valve and device - Google Patents
A kind of stagnant ring compensation method of pump control system main valve and device Download PDFInfo
- Publication number
- CN110526122A CN110526122A CN201910826299.9A CN201910826299A CN110526122A CN 110526122 A CN110526122 A CN 110526122A CN 201910826299 A CN201910826299 A CN 201910826299A CN 110526122 A CN110526122 A CN 110526122A
- Authority
- CN
- China
- Prior art keywords
- main valve
- stagnant ring
- electric current
- pressure
- ring compensation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/20—Control systems or devices for non-electric drives
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/026—Pressure compensating valves
Abstract
Include following procedure the invention discloses a kind of stagnant ring compensation method of pump control system main valve and device, method: pressure difference P3=P1-P2 is calculated in acquisition main valve upstream pressure P1 and downstream pressure P2；Compare pressure difference P3 and preset pressure predetermined value K1 and K2 size relation；Wherein K2 > K1；A it) as K1≤P3≤K2, is compensated without stagnant ring；B) as P3<K1, stagnant ring compensation is carried out, until stopping stagnant ring compensation when P3>K1；C) as P3 > K2, then it is assumed that stagnant ring compensation is excessive, compensates and corrects.The method of the present invention can compensate the stagnant ring of main valve, and prevent from compensating excessive.
Description
Technical field
The present invention relates to crane pump control system design fields, and in particular to a kind of stagnant ring compensation of pump control system main valve
Method and device.
Background technique
Relational language is explained:
The stagnant ring of main valve: main valve commutate when, as handle inclination angle is gradually increased, main valve opening be also gradually increased, when handle inclination angle by
Gradually increase to maximum value, after be reduced to minimum value again, for the inclination angle of identical handle, there are difference, differences for the opening of main valve
For stagnant ring.
Crane is widely used important equipment in engineering construction, mainly includes the bases such as raising, flexible, luffing, revolution
This movement is driven by hydraulic system, and hoisting mechanism is the key operation mechanism of hoisting machinery raising movement, for realizing weight
The vertical lift operating condition of object when raising acts, pumps the oil driving lifting motor of output, drives hoist engine movement, and then realize weight
The movement of object, main valve is used to control the direction of rotation of motor, and then controls the direction of motion and speed of weight.
In the prior art, simplest control is the displacement variation that handle exports direct direct proportion control pump, i.e., with setting about
Handle inclination angle is gradually increased, and the discharge capacity of pump also increases, and flow system flow increases, and crane movement improves, and when handle has just had output, it is main
Standard-sized sheet, i.e. main valve are served only for control direction, are not involved in the control of speed valve.Such scheme is adjusted the speed by pump completely, and liquid
For press pump in the case where high-pressure low-flow, discharge stability is poor, adjusts the speed by pump merely, the control for being difficult to meet speed is wanted
It asks.
To obtain more fine and smooth fine motion control, in the prior art, also useful main valve participates in the secondary control of flow, i.e.,
With the variation at handle inclination angle, the discharge capacity of pump is gradually increased, while main valve opening is also gradually increased, and main valve opening is allowed to allow to lead to
The flow crossed is slightly less than the output flow of pump, by the throttling action of main valve allow pump export flow it is more stable, guarantee it is micro-
Dynamic effect.Although such scheme can allow valve to carry out Secondary Control to the flow of pump, when handle consults increase and then gradually subtracts again
In the case where small, due to the presence of the stagnant ring of main valve, in this case, valve will weaken the Secondary Control effect of pump significantly, very
To not working.
Summary of the invention
It is an object of the invention to overcome deficiency in the prior art, a kind of stagnant ring compensation side of pump control system main valve is proposed
Method can compensate the stagnant ring of main valve, and prevent from compensating excessive.
In order to solve the above technical problems, the present invention provides a kind of stagnant ring compensation methodes of pump control system main valve, characterized in that
Including following procedure:
Main valve upstream pressure P1 and downstream pressure P2 is acquired, pressure difference P3=P1-P2 is calculated；
Compare pressure difference P3 and preset pressure predetermined value K1 and K2 size relation；Wherein K2 > K1；
A it) as K1≤P3≤K2, is compensated without stagnant ring；
B) as P3<K1, stagnant ring compensation is carried out, until stopping stagnant ring compensation when P3>K1；
C) as P3 > K2, then it is assumed that stagnant ring compensation is excessive, compensates and corrects.
Further, the detailed process of stagnant ring compensation is carried out as P3 < K1 are as follows:
If manipulating the handle inclination angle of main valve also in change procedure, increase the rate of main valve current of commutation reduction, or reduce pump
Control the rate that electric current reduces；
If the handle inclination angle for manipulating main valve is stablized in some angle, reduce main valve electric current, or increase the control electric current of pump.
Further, the detailed process compensated and corrected as P3 > K2 are as follows:
If manipulating the handle inclination angle of main valve also in change procedure, reduce the rate of main valve current of commutation reduction, or increase pump
Control the rate that electric current reduces；
If the handle inclination angle for manipulating main valve is stablized in some angle, increase main valve electric current, or reduce the control electric current of pump.
Correspondingly, the present invention also provides a kind of stagnant ring compensation devices of pump control system main valve, characterized in that pressed including two
Force snesor and controller；The output end of two pressure sensors is separately connected controller；
Two pressure sensors are used to acquire main valve upstream pressure P1 and downstream pressure P2 respectively,
Controller includes stagnant ring compensating module and compensating approach module；Wherein:
Stagnant ring compensating module, for big according to main valve upstream pressure P1 and downstream pressure P2 and preset pressure predetermined value K1 and K2
Small relationship judges whether to stagnant ring compensation；
Compensating approach module, for big according to main valve upstream pressure P1 and downstream pressure P2 and preset pressure predetermined value K1 and K2
Small relationship, judges whether to compensating approach.
Further, in stagnant ring compensating module, for according to main valve upstream pressure P1 and downstream pressure P2 and preset pressure
Power predetermined value K1 and K2 size relation judges whether to the detailed process of stagnant ring compensation are as follows:
Calculate pressure difference P3=P1-P2；
A it) as K1≤P3≤K2, is compensated without stagnant ring；
B) as P3<K1, stagnant ring compensation is carried out, until stopping stagnant ring compensation when P3>K1.
Further, the detailed process of stagnant ring compensation is carried out as P3 < K1 are as follows:
If manipulating the handle inclination angle of main valve also in change procedure, increase the rate of main valve current of commutation reduction, or reduce pump
Control the rate that electric current reduces；
If the handle inclination angle for manipulating main valve is stablized in some angle, reduce main valve electric current, or increase the control electric current of pump.
Further, in compensating approach module, for according to main valve upstream pressure P1 and downstream pressure P2 and preset pressure
Power predetermined value K1 and K2 size relation judges whether to the detailed process of compensating approach are as follows:
Calculate pressure difference P3=P1-P2；
As P3 > K2, then it is assumed that stagnant ring compensation is excessive, compensates and corrects.
Further, the detailed process compensated and corrected as P3 > K2 are as follows:
If manipulating the handle inclination angle of main valve also in change procedure, reduce the rate of main valve current of commutation reduction, or increase pump
Control the rate that electric current reduces；
If the handle inclination angle for manipulating main valve is stablized in some angle, increase main valve electric current, or reduce the control electric current of pump.
Compared with prior art, the beneficial effects obtained by the present invention are as follows being: the present invention can compensate the stagnant ring of main valve,
And it prevents from compensating excessive.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of apparatus of the present invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
The related description of pump control system is as follows in the prior art:
Main valve is automatically controlled main valve, increases it and controls electric current, can increase main valve aperture, reduces it and controls electric current, can reduce master
Valve opening degree；
Pump is automatically controlled main pump, increases it and controls electric current, can increase the discharge capacity of pump, reduces it and controls electric current, can reduce pump
Discharge capacity；
The technical solution is mainly used for the crane of electrically controlled manipulation mode, i.e., by pushing the handle of respective action, (left and right respectively has
One handle, each handle have four direction all around, such as right handles: preceding-elevator is fallen, rear-hoisting crane, a left side-luffing
Rise, the right side-luffing is fallen), signal is passed into controller, corresponding valve and pump work are controlled by controller.
In the prior art, when user's driving handle, with being gradually increased for handle inclination angle, main valve control electric current gradually increases
Greatly, then main pump control electric current be gradually increased, movement speed accelerate, when handle inclination angle is gradually reduced, main pump control electric current by
Decrescence small, main valve control electric current is gradually reduced, and movement speed is slack-off.After handle goes back to middle position, main pump control electric current is preferably minimized,
Main valve control electric current is preferably minimized, and main valve is closed.
The stagnant ring compensation method of a kind of pump control system main valve of the invention, including following procedure:
S1 acquires main valve upstream pressure P1 and downstream pressure P2, pressure difference P3=P1-P2 is calculated；
S2 compares pressure difference P3 and preset pressure predetermined value K1 and K2 size relation；The value of wherein K2 > K1, K1 and K2 can be according to
It is determined according to experience；
A) as K1≤P3≤K2, without stagnant ring compensation function；
B) as P3 < K1, it is believed that valve carries out stagnant ring compensation, compensation method to the Secondary Control declines of pump are as follows:
If handle inclination angle also in change procedure, can increase the rate of main valve current of commutation reduction, or reduce pump control electricity
Flow reduced rate；
It, can be by reducing main valve electric current, or the control electric current of increase pump if handle inclination angle is stablized in some angle；
Until then stopping stagnant ring compensation function when P3 > K1；
C) as P3 > K2, then it is assumed that stagnant ring compensation is excessive, will compensate and correct, modification method:
If handle inclination angle also in change procedure, can reduce the rate of main valve current of commutation reduction, or increase pump control electricity
Flow reduced rate；
It, can be by increasing main valve electric current, or the control electric current of reduction pump if handle inclination angle is stablized in some angle.
Correspondingly, the present invention also provides a kind of stagnant ring compensation devices of pump control system main valve, characterized in that pressed including two
Force snesor and controller；The output end of two pressure sensors is separately connected controller, and the output end of controller is separately connected
Main valve and pump；Controller can be realized using single-chip microcontroller in the prior art or microprocessor.
Two pressure sensors are used to acquire main valve upstream pressure P1 and downstream pressure P2 respectively,
Controller includes stagnant ring compensating module and compensating approach module；Wherein:
Stagnant ring compensating module, for big according to main valve upstream pressure P1 and downstream pressure P2 and preset pressure predetermined value K1 and K2
Small relationship judges whether to stagnant ring compensation；
Compensating approach module, for big according to main valve upstream pressure P1 and downstream pressure P2 and preset pressure predetermined value K1 and K2
Small relationship, judges whether to compensating approach.
Further, in stagnant ring compensating module, for according to main valve upstream pressure P1 and downstream pressure P2 and preset pressure
Power predetermined value K1 and K2 size relation judges whether to the detailed process of stagnant ring compensation are as follows:
Calculate pressure difference P3=P1-P2；
A it) as K1≤P3≤K2, is compensated without stagnant ring；
B) as P3<K1, stagnant ring compensation is carried out, until stopping stagnant ring compensation when P3>K1.
Further, the detailed process of stagnant ring compensation is carried out as P3 < K1 are as follows:
If handle inclination angle, also in change procedure, controller control increases the rate that the main valve current of commutation reduces, or reduces pump
Control the rate that electric current reduces；
If handle inclination angle is stablized in some angle, controller reduces main valve electric current, or increases the control electric current of pump.
Further, in compensating approach module, for according to main valve upstream pressure P1 and downstream pressure P2 and preset pressure
Power predetermined value K1 and K2 size relation judges whether to the detailed process of compensating approach are as follows:
Calculate pressure difference P3=P1-P2；
As P3 > K2, then it is assumed that stagnant ring compensation is excessive, compensates and corrects.
Further, the detailed process compensated and corrected as P3 > K2 are as follows:
If handle inclination angle, also in change procedure, controller control reduces the rate that the main valve current of commutation reduces, or increases pump
Control the rate that electric current reduces；
If handle inclination angle is stablized in some angle, controller control increases main valve electric current, or reduces the control electric current of pump.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications, these improvements and modifications can also be made
Also it should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of stagnant ring compensation method of pump control system main valve, characterized in that the following steps are included:
Main valve upstream pressure P1 and downstream pressure P2 is acquired, pressure difference P3=P1-P2 is calculated；
Compare pressure difference P3 and preset pressure predetermined value K1 and K2 size relation, wherein K2 > K1；
A it) as K1≤P3≤K2, is compensated without stagnant ring；
B) as P3<K1, stagnant ring compensation is carried out, until stopping stagnant ring compensation when P3>K1；
C) as P3 > K2, then it is assumed that stagnant ring compensation is excessive, compensates and corrects.
2. the stagnant ring compensation method of a kind of pump control system main valve according to claim 1, characterized in that as P3 < K1, carry out
Stagnant ring compensation, detailed process are as follows:
If manipulating the handle inclination angle of main valve also in change procedure, increase the rate of main valve current of commutation reduction, or reduce pump
Control the rate that electric current reduces；
If handle inclination angle is stablized in some angle, reduce main valve electric current, or increase the control electric current of pump.
3. the stagnant ring compensation method of a kind of pump control system main valve according to claim 1, characterized in that as P3 > K2, carry out
Compensating approach, detailed process are as follows:
If manipulating the handle inclination angle of main valve also in change procedure, reduce the rate of main valve current of commutation reduction, or increase pump
Control the rate that electric current reduces；
If the handle inclination angle for manipulating main valve is stablized in some angle, increase main valve electric current, or reduce the control electric current of pump.
4. a kind of stagnant ring compensation device of pump control system main valve, characterized in that including two pressure sensors and controller；Two pressures
The output end of force snesor is separately connected controller；
Two pressure sensors are respectively used to acquisition main valve upstream pressure P1 and downstream pressure P2,
Controller includes stagnant ring compensating module and compensating approach module, in which:
The stagnant ring compensating module is big according to main valve upstream pressure P1 and downstream pressure P2 and preset pressure predetermined value K1 and K2
Small relationship judges whether to stagnant ring compensation；
The compensating approach module is big according to main valve upstream pressure P1 and downstream pressure P2 and preset pressure predetermined value K1 and K2
Small relationship, judges whether to compensating approach.
5. the stagnant ring compensation device of a kind of pump control system main valve according to claim 4, characterized in that the stagnant ring compensates mould
Root tuber is judged whether to according to main valve upstream pressure P1 and downstream pressure P2 and preset pressure predetermined value K1 and K2 size relation
Stagnant ring compensation, detailed process are as follows:
Calculate pressure difference P3=P1-P2；
A it) as K1≤P3≤K2, is compensated without stagnant ring；
B) as P3<K1, stagnant ring compensation is carried out, until stopping stagnant ring compensation when P3>K1.
6. the stagnant ring compensation device of a kind of pump control system main valve according to claim 5, characterized in that it is described as P3 < K1,
Carry out stagnant ring compensation, detailed process are as follows:
If manipulating the handle inclination angle of main valve also in change procedure, increase the rate of main valve current of commutation reduction, or reduce pump
Control the rate that electric current reduces；
If the handle inclination angle for manipulating main valve is stablized in some angle, reduce main valve electric current, or increase the control electric current of pump.
7. the stagnant ring compensation device of a kind of pump control system main valve according to claim 4, characterized in that the compensating approach mould
Root tuber is judged whether to according to main valve upstream pressure P1 and downstream pressure P2 and preset pressure predetermined value K1 and K2 size relation
Compensating approach, detailed process are as follows:
Calculate pressure difference P3=P1-P2；
As P3 > K2, then it is assumed that stagnant ring compensation is excessive, compensates and corrects.
8. the stagnant ring compensation device of a kind of pump control system main valve according to claim 7, characterized in that it is described as P3 > K2,
It compensates and corrects, detailed process are as follows:
If manipulating the handle inclination angle of main valve also in change procedure, reduce the rate of main valve current of commutation reduction, or increase pump
Control the rate that electric current reduces；
If the handle inclination angle for manipulating main valve is stablized in some angle, increase main valve electric current, or reduce the control electric current of pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910826299.9A CN110526122B (en) | 2019-09-03 | 2019-09-03 | Method and device for compensating hysteresis of main valve of pump control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910826299.9A CN110526122B (en) | 2019-09-03 | 2019-09-03 | Method and device for compensating hysteresis of main valve of pump control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110526122A true CN110526122A (en) | 2019-12-03 |
| CN110526122B CN110526122B (en) | 2020-08-28 |
Family
ID=68666303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910826299.9A Active CN110526122B (en) | 2019-09-03 | 2019-09-03 | Method and device for compensating hysteresis of main valve of pump control system |
Country Status (1)
| Country | Link |
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| CN (1) | CN110526122B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113325887A (en) * | 2021-05-28 | 2021-08-31 | 三一重机有限公司 | Valve hysteresis compensation method and device, electronic equipment and storage medium |
| CN113325886A (en) * | 2021-05-27 | 2021-08-31 | 三一重机有限公司 | Valve hysteresis compensation method and device, electronic equipment and storage medium |
| CN115289084A (en) * | 2022-10-09 | 2022-11-04 | 江苏徐工工程机械研究院有限公司 | Automatic calibration and attenuation compensation device and system for main valve of full electric control system |
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| CN1053110A (en) * | 1989-12-31 | 1991-07-17 | 太原工业大学 | Combined decompressing and speed-regulating valve by hydroelectric proportion |
| DE29617735U1 (en) * | 1996-07-04 | 1997-11-06 | Orenstein & Koppel Ag | Device for load pressure independent control and load maintenance of several rotary or translational consumers of a mobile hydraulic construction and work machine |
| CN109707688A (en) * | 2018-12-29 | 2019-05-03 | 中国煤炭科工集团太原研究院有限公司 | A kind of anti-full load sensing multi-way valve of the flow with precondition pressure compensator |
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2019
- 2019-09-03 CN CN201910826299.9A patent/CN110526122B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053110A (en) * | 1989-12-31 | 1991-07-17 | 太原工业大学 | Combined decompressing and speed-regulating valve by hydroelectric proportion |
| DE29617735U1 (en) * | 1996-07-04 | 1997-11-06 | Orenstein & Koppel Ag | Device for load pressure independent control and load maintenance of several rotary or translational consumers of a mobile hydraulic construction and work machine |
| CN109707688A (en) * | 2018-12-29 | 2019-05-03 | 中国煤炭科工集团太原研究院有限公司 | A kind of anti-full load sensing multi-way valve of the flow with precondition pressure compensator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113325886A (en) * | 2021-05-27 | 2021-08-31 | 三一重机有限公司 | Valve hysteresis compensation method and device, electronic equipment and storage medium |
| CN113325886B (en) * | 2021-05-27 | 2023-02-28 | 三一重机有限公司 | Valve hysteresis compensation method and device, electronic equipment and storage medium |
| CN113325887A (en) * | 2021-05-28 | 2021-08-31 | 三一重机有限公司 | Valve hysteresis compensation method and device, electronic equipment and storage medium |
| CN115289084A (en) * | 2022-10-09 | 2022-11-04 | 江苏徐工工程机械研究院有限公司 | Automatic calibration and attenuation compensation device and system for main valve of full electric control system |
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| CN110526122B (en) | 2020-08-28 |
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