CN107781151A - A kind of air driven pump pneumatic control system based on high-speed switch valve - Google Patents
A kind of air driven pump pneumatic control system based on high-speed switch valve Download PDFInfo
- Publication number
- CN107781151A CN107781151A CN201610733899.7A CN201610733899A CN107781151A CN 107781151 A CN107781151 A CN 107781151A CN 201610733899 A CN201610733899 A CN 201610733899A CN 107781151 A CN107781151 A CN 107781151A
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- China
- Prior art keywords
- control system
- switch valve
- speed switch
- pneumatic control
- driven pump
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Flow Control (AREA)
Abstract
A kind of air driven pump pneumatic control system based on high-speed switch valve, using single-chip microcomputer, devise pneumatic control system hardware configuration, develop drive circuit, the system has the advantages that opening and closing effect is good, low in energy consumption, and PWM signal frequency and dutycycle are adjustable, indicate high-speed switch valve has extensive use value in pneumatic control system.
Description
Art
The present invention relates to a kind of air driven pump pneumatic control system based on high-speed switch valve, suitable for mechanical field.
Background technology
It is micro- with advancing by leaps and bounds for the new thought of automation field, new algorithm, the appearance of new idea and computer technology
The extensive use of electronic technology, gas-pressure component and its control system also develop towards digitlization direction, and wherein high-speed switch valve has
There are higher switching speed, simple in construction, antipollution, strong antijamming capability, and be easy to be connected with computer, can utilize soft
Part servo come substitute costliness mechanical component, realize digital electrical control.This will enable the drive circuit of complexity significantly
Simplify, make control process simple and flexible reliable.High-speed switch valve can utilize single-chip microcomputer or PLC direct by working out suitable software
Control, realizes the direct control to pneumatic system, and cost is greatly lowered, and reliability obtains carrying greatly very much with static cost control precision
Height, this is more prominent in open cycle system.The advantages of based on digital valve, the control pressurer system of certain air driven pump can use numeral
Valve, make the pressure stability of jet action valve porch of air driven pump in (2.7 ± 0.3) MPa.
The content of the invention
The present invention proposes a kind of air driven pump pneumatic control system based on high-speed switch valve, using single-chip microcomputer, devises
Pneumatic control system hardware configuration, develops drive circuit, and the system has the advantages that opening and closing effect is good, low in energy consumption, and PWM
Signal frequency and dutycycle are adjustable, and indicate high-speed switch valve has extensive use value in pneumatic control system.
The technical solution adopted in the present invention is.
The pneumatic control system is to use PWM control modes, within the system, because the signal acted on valve is one
Series of pulses, so the digital valve also "ON" being switched fast only corresponding with low and high level and "Off" two states, and to adjust
The section opening time controls average discharge by adjusting dutycycle.
The control system is controlled by keyboard operation or by PC by serial communication, another effect of keyboard
It is to input setup pressure value, the pressure that single-chip microcomputer can be the voltage signal that sensor checks after A/D translation operations with setting
Force value compares, and changes its dutycycle, i.e., when inlet pressure is higher than setting pressure, increases dutycycle, allow evacuation time to increase, overflow
Flow increase is flowed, inlet pressure declines;Conversely, when population pressure is less than setting pressure, reduces dutycycle, reduce evacuation time,
Excess flow reduces, and inlet pressure rises.
The voltage-regulating system of the control system is mainly by high-speed switch valve, pressure sensor, digitial controller three parts group
Into.The pressure of pressure sensor sensitivity jet action valve porch, digitial controller is inputted as feedback signal, what controller provided
The switch motion of control signal controlling switch valve after PWM, by changing the dutycycle of high-speed switch valve ON time, from
And change the throughput (time average discharge) of pressure regulator valve, so as to realize proportion adjustment function of the pressure regulator valve to pressure.According to setting
Meter requires that the system developed is really a voltage-stabilizing system, by the pressure stability of jet action valve porch in 2.7MPa.
The control circuit of the control system be the C8051F020 single-chip microcomputers using certain company as core, wherein C8051F020
There are 64 I/O mouths.Because C8051F020 uses flowing structure, instruction execution speed has very big compared with 8051 structures of standard
Raising.
The Software for Design of the control system includes system initialization routine, Keyboard management program, LCD and shows program, number
According to acquisition process, AID conversion programs and PID control program, PWM control programs, timer interrupt program, serial communication program etc.
Module forms.Wherein PWM control programs and pid control algorithm are the cores of high-speed switch valve work.
The beneficial effects of the invention are as follows：The control system has the advantages that opening and closing effect is good, low in energy consumption, and pwm signal
Frequency and dutycycle are adjustable, and indicate high-speed switch valve has extensive use value in pneumatic control system.
Brief description of the drawings
Fig. 1 is the pneumatic control system structure chart of the present invention.
Fig. 2 is the control system program flow diagram of the present invention.
Fig. 3 is the voltage-stabilizing system theory of constitution figure of the present invention.
Fig. 4 is the high-speed switch valve profile and structure chart of the present invention.
Fig. 5 is the control system hardware configuration of the present invention.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Such as Fig. 1, pneumatic control system is to use PWM control modes, within the system, because the signal acted on valve is
A series of pulses, so the digital valve also "ON" being switched fast only corresponding with low and high level and "Off" two states, and with
The regulation opening time controls average discharge by adjusting dutycycle.
Such as Fig. 2, control system is controlled by keyboard operation or by PC by serial communication, another work of keyboard
Be input setup pressure value, single-chip microcomputer can the voltage signal that sensor checks after A/D translation operations and setting
Pressure value compares, and changes its dutycycle, i.e., when inlet pressure is higher than setting pressure, increases dutycycle, allow evacuation time to increase,
Excess flow increase, inlet pressure decline;Conversely, when population pressure is less than setting pressure, reduce dutycycle, when reducing exhaust
Between, excess flow reduces, and inlet pressure rises.It is achieved in the purpose of control pressure.
Such as Fig. 3, voltage-regulating system is mainly made up of high-speed switch valve, pressure sensor, digitial controller three parts.Pressure passes
The pressure of sensor sensitivity jet action valve porch, digitial controller, the control signal that controller provides are inputted as feedback signal
The switch motion of controlling switch valve after PWM, by changing the dutycycle of high-speed switch valve ON time, adjusted so as to change
The throughput (time average discharge) of pressure valve, so as to realize proportion adjustment function of the pressure regulator valve to pressure.According to design requirement, institute
The system of development is really a voltage-stabilizing system, by the pressure stability of jet action valve porch in 2.7MPa.
Such as Fig. 4, high-speed switch valve mainly by electromagnet component 7, upper valve body component 2, lower valve body component 1, stem member 5,
Disc spring 6, carbon seal ring 4 etc. form.Wherein, electromagnet component borrows the electromagnet component of BBF valves, and it is the electromagnetism of clapper-type
Iron, disc spring and armature are also BBF borrow part.From Fig. 5 from can be seen that:Valve rod and valve element are not rigid attachments, and valve element can be with
Automatic centering, it can so reduce the requirement to processing, assembling;In addition, the stroke of valve element bead is only spacing by lower valve base, and gas
Gap is slightly larger than stroke, and both separate adjustment, reduce the difficulty of adjustment so that the valve arrangement is simple, and processing and adjustment are all more
It is convenient.The operation principle of high-speed switch valve is：When electromagnet no power, i.e., under normal conditions, valve rod is in the presence of disc spring force
Compress valve element bead so that valve port is closed；After electromagnet is powered, caused electromagnetic attraction overcomes disc spring force and frictional force to cause
Valve rod is moved upwards, and valve element bead is lifted in the presence of atmospheric pressure, and valve port opening is rapidly reached maximum.Now, bead blocks up
Firmly flow leakage, plus the sealing function of graphite circle, can effectively reduce to the passage of electromagnet component and leak into electromagnet
The air-flow of part.
Such as Fig. 5, after the digitial controller that induces one in systems, system can take flexible, variable control plan as needed
Slightly, " soft servo " is realized.This is for small rigidity, low resistance, low-response, non-linear serious and be difficult to obtain mathematical models
Pneumatic system for, great meaning.According to the requirement of system, its control circuit is the C8051F020 single-chip microcomputers with certain company
For core.Wherein C8051F020 has 64 I/O mouths.Because C8051F020 uses flowing structure, the 8051 structure phases with standard
Improved a lot than instruction execution speed.The traffic rate of 8051 actual uses of standard is up to 57 600bps, and
C8051F020 traffic rate is up to 460800bps.C8051F020 speed can reach 25MIPS, and (clock frequency reaches
25MHz), also with powerful 8 and 16 non-inverting inputs and 12 ADC analog peripherals.It has integrated level it is high,
Energy consumption is low, cheap and reliability is high, strong antijamming capability, it is easy to use, can carry out control in real time, arithmetic speed it is fast,
For the particular advantages such as event response and processing speed be fast, it disclosure satisfy that Comprehensive Control precision is better than 1%, controlling cycle is less than
1ms, frequency range are more than the requirement of 100Hz, collection using 0.1ms as a cycle.
The control circuit of control system be the C8051F020 single-chip microcomputers using certain company as core, wherein C8051F020 has 64
Individual I/O mouths.Because C8051F020 uses flowing structure, instruction execution speed has very big carry compared with 8051 structures of standard
It is high.
Claims (6)
1. a kind of air driven pump pneumatic control system based on high-speed switch valve, it is characterized in that：The pneumatic control system is to use
PWM control modes, within the system, because the signal acted on valve is a series of pulses, thus digital valve also only with height
The "ON" and "Off" two states being switched fast corresponding to low level, and controlled with adjusting the opening time by adjusting dutycycle
Average discharge processed.
2. a kind of air driven pump pneumatic control system based on high-speed switch valve according to claim 1, it is characterized in that：It is described
Hydraulic system includes：The control system is controlled by keyboard operation or by PC by serial communication, keyboard it is another
Individual effect is input setup pressure value, and single-chip microcomputer after A/D translation operations and can set the voltage signal that sensor checks
Fixed pressure value compares, and changes its dutycycle, i.e., when inlet pressure is higher than setting pressure, increases dutycycle, allows evacuation time
Increase, excess flow increase, inlet pressure declines;Conversely, when population pressure is less than setting pressure, reduces dutycycle, reduce row
Gas time, excess flow reduce, and inlet pressure rises.
3. a kind of air driven pump pneumatic control system based on high-speed switch valve according to claim 1, it is characterized in that：It is described
The voltage-regulating system of control system is mainly made up of high-speed switch valve, pressure sensor, digitial controller three parts.
4. a kind of air driven pump pneumatic control system based on high-speed switch valve according to claim 1, it is characterized in that：It is described
The control circuit of control system be the C8051F020 single-chip microcomputers using certain company as core, wherein C8051F020 has 64 I/O mouths,
Because C8051F020 uses flowing structure, instruction execution speed improves a lot compared with 8051 structures of standard.
5. a kind of air driven pump pneumatic control system based on high-speed switch valve according to claim 1, it is characterized in that：Institute
State the OMRON MY4NJ that lower computer control system uses powerful Siemens 57-200CPU224 types PLC and high reliability
Type Control hydraulic pump, realizes the control to each posture of hoistable platform.
6. a kind of air driven pump pneumatic control system based on high-speed switch valve according to claim 1, it is characterized in that：It is described
The Software for Design of control system include system initialization routine, Keyboard management program, LCD show program, data acquisition process,
The module such as AID conversion programs and PID control program, PWM control programs, timer interrupt program, serial communication program forms, its
Middle PWM control programs and pid control algorithm are the cores of high-speed switch valve work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610733899.7A CN107781151A (en) | 2016-08-28 | 2016-08-28 | A kind of air driven pump pneumatic control system based on high-speed switch valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610733899.7A CN107781151A (en) | 2016-08-28 | 2016-08-28 | A kind of air driven pump pneumatic control system based on high-speed switch valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107781151A true CN107781151A (en) | 2018-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610733899.7A Pending CN107781151A (en) | 2016-08-28 | 2016-08-28 | A kind of air driven pump pneumatic control system based on high-speed switch valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397568A (en) * | 2018-04-24 | 2019-11-01 | 固瑞克明尼苏达有限公司 | The pulsewidth modulation Motor Control of booster pump |
| CN113359887A (en) * | 2021-06-11 | 2021-09-07 | 华能澜沧江水电股份有限公司 | Ultrahigh-pressure grouting pressure control device and control method |
-
2016
- 2016-08-28 CN CN201610733899.7A patent/CN107781151A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397568A (en) * | 2018-04-24 | 2019-11-01 | 固瑞克明尼苏达有限公司 | The pulsewidth modulation Motor Control of booster pump |
| CN110397568B (en) * | 2018-04-24 | 2021-05-14 | 固瑞克明尼苏达有限公司 | Pulse width modulated motor control for booster pump |
| CN113359887A (en) * | 2021-06-11 | 2021-09-07 | 华能澜沧江水电股份有限公司 | Ultrahigh-pressure grouting pressure control device and control method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180309 |
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| WD01 | Invention patent application deemed withdrawn after publication |