CN202550969U - Two-way digital proportional valve amplifier - Google Patents
Two-way digital proportional valve amplifier Download PDFInfo
- Publication number
- CN202550969U CN202550969U CN2012201273248U CN201220127324U CN202550969U CN 202550969 U CN202550969 U CN 202550969U CN 2012201273248 U CN2012201273248 U CN 2012201273248U CN 201220127324 U CN201220127324 U CN 201220127324U CN 202550969 U CN202550969 U CN 202550969U
- Authority
- CN
- China
- Prior art keywords
- circuit
- input
- power amplification
- master controller
- valve
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Magnetically Actuated Valves (AREA)
Abstract
The utility model relates to a two-way digital proportional valve amplifier which is characterized by comprising an input interface circuit, an ARM main controller, a first power amplification driving circuit, a second power amplification driving circuit, a power supply circuit, a proportional valve core displacement sensor and a measuring and amplifying circuit, wherein the output end of the input interface circuit is connected with the input end of the ARM main controller, the ARM main controller comprises a ramp generator, a step generator, a chatter signal, a linearity controller and a PID controller, and a parameter input interface is connected with an upper computer; the input end of the first power amplification driving circuit is connected with the output end of the ARM main controller, the output end of the first power amplification driving circuit is connected with a proportional valve, and the first power amplification driving circuit is used for controlling a first way of electromagnets of the proportional valve; the input end of the second power amplification driving circuit is connected with the output end of the ARM main controller, the output end of the second power amplification driving circuit is connected with the proportional valve, and the second power amplification driving circuit is used for controlling a second way of electromagnets of the proportional valve; and the input end of the measuring and amplifying circuit is connected with the proportional valve core displacement sensor, and the output end of the measuring and amplifying circuit is connected with the ARM main controller. The two-way digital proportional valve amplifier is high in economical efficiency, good in reliability and flexible and simple in operation.
Description
Technical field
The utility model relates to a kind of two-way numerical scale valve amplifier.
Background technology
In industrial processes, engineering machinery, automatic production line, or industrial department such as robot, boats and ships, aviation oneself is difficult to meet the demands in some industrial circles to increasingly high, the traditional hydraulic system that requires of hydraulic system.And increasing substantially along with the electronic devices and components performance; Price descends, and makes the electrohydraulic proportion technology development rapidly, therefore; How better electronic technology, modern control strategy organically to be combined with proportional technique; Give full play to advantage separately, make electrohydraulic proportion technology, raising further perfect, become the important topic of domestic and international promotion hydraulic technique development at aspects such as control performance, industrial Applicability As.At present; The electric-hydraulic proportion integrated control device has become a kind of trend of electric-hydraulic proportion device development; The hydraulic pressure integration module that is made up of special-purpose integrated control device and control strategy will further be opened up the range of application of electric-hydraulic proportion device; Proportional amplifier is as an important composition element of electric-hydraulic proportion integrated control device, and is very important for the technological progress that promotes the electric-hydraulic proportion integrated control device.
The proportioning valve amplifier all adopts the various function controls of a large amount of Realization of Analog Circuit at present; Parameter is more, adjustment process is also more loaded down with trivial details because amplifier need be adjusted; Therefore the analog functuion circuit that need use is very numerous and diverse, and control precision is not high, and cost is very high.
The utility model content
The utility model technical problem to be solved is to above-mentioned prior art a kind of control precision height, cost two-way numerical scale valve amplifier low, simple in structure to be provided.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: this two-way numerical scale valve amplifier is characterized in that: comprise
Input interface circuit be used for converting the electric current and/or the voltage signal of input into voltage signal that the ARM master controller is suitable for, and then the A/D converter of giving in the ARM master controller carries out analog-to-digital conversion;
The ARM master controller, the output of input interface circuit links to each other with the input of ARM master controller, and this ARM controller comprises ramp generator, step generator, vibrating signal, linearity controller and PID controller, and the parameter input interface links to each other with host computer;
The first power amplification drive circuit, input links to each other with the output of ARM master controller, and output links to each other with first proportioning valve, is used for the first via electromagnet of control ratio valve;
The second power amplification drive circuit, input links to each other with the output of ARM master controller, and output links to each other with second proportioning valve, is used for the second road electromagnet of control ratio valve;
Power circuit is for ARM master controller, input interface circuit, the first power amplification drive circuit and the second power amplification drive circuit provide required stabilized power supply;
The proportioning valve valve core displacement sensor is used for real-time measurement scale valve core displacement;
Measure amplifying circuit, input links to each other with the proportioning valve valve core displacement sensor, and output links to each other with the ARM master controller.
For satisfying the needs of control program storage data in the ARM master controller; The two-way numerical scale valve amplifier that the utility model provides also comprises the external memory storage expanded circuit; The memory that extends out makes things convenient for the various parameters of stored ratio amplifier, and the running status of proportional amplifier also can effectively be preserved after power down.
In order to communicate with host computer; The two-way numerical scale valve amplifier that the utility model provides also comprises serial communication circuit and usb communication circuit and CAN bus interface circuit; The chip that the ARM master controller adopts can communicate through RS232 serial communication interface and host computer, not only can the parameter of host computer layout setting be sent in the ARM master control chip, also can current each parameter of electromagnet operation be presented on the host computer interface simultaneously; Understand proportioning valve operation conditions, commissioning device etc. to the staff and bring great convenience; In addition, usb communication module and CAN bus interface module are with convenient amplifier function upgrading and on-line debugging in the future.
Preferably, said input interface circuit comprises analog quantity interface circuit and digital quantity interface circuit, the analog quantity interface circuit can accept 4～20mA electric current perhaps-10～+ analog input of 10V voltage.Because the A/D converter that carries of ARM controller chip can only be imported small voltage, therefore need convert the current signal of input 4～20mA the input of into small voltage signal, and then the A/D converter of giving ARM control chip carries out analog-to-digital conversion.In like manner ,-10～+ 10V voltage analog input also need convert the input of small voltage signal earlier into, and then the A/D converter of giving the ARM main control chip carries out analog-to-digital conversion; The altogether corresponding 16 kinds of operating states of digital quantity interface circuit four road interfaces, four tunnel digital-quantity input interface all adopt+input of 12V voltage; When wherein any one connect+during 12V voltage, then this road is by gating.The set point input signal of routing path is regulated by rheostat and is obtained.
Improve again; Said power amplification drive circuit adopts reversal connection discharging type power driving circuit; Reversal connection discharging type power driving circuit replaces traditional power amplification drive circuit; Power supply, high-power rectification component and high-power power tube are not being proposed can significantly improve the rate of decay of proportion electro-magnet coil current, thereby improve the dynamic band width of proportion electro-magnet under the prerequisite of specific (special) requirements.
Compared with prior art, the advantage of the utility model is: employing ARM is a master controller, and links such as slope, step, the linearity, vibrating signal are realized through the ARM controller; Its parameter can be set through upper computer software; Partial parameters also can be regulated through potentiometer simultaneously, not only can effectively solve the drawback of above-mentioned traditional analog formula proportional amplifier, and economy is higher; Better reliability; Flexible operation is simple, and working service is simple and convenient, has broad application prospects.
Description of drawings
Fig. 1 is the structured flowchart of two-way numerical scale valve amplifier among the utility model embodiment.
Fig. 2 is the structural representation of power amplification drive circuit among the utility model embodiment.
Fig. 3 is a structural representation of measuring amplifying circuit among the utility model embodiment.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Two-way numerical scale valve amplifier as shown in Figure 1; Its ARM is the major control chip; Comprise input interface circuit, ARM master controller, power circuit, external memory storage expanded circuit, the first power amplification drive circuit, the second power amplification drive circuit, telecommunication circuit and be used for the proportioning valve valve core displacement sensor of real-time measurement scale valve core displacement and measure amplifying circuit, in order to control two-way electromagnet proportioning valve.
Input interface circuit be used for converting the electric current and/or the voltage signal of input into voltage signal that the ARM master controller is suitable for, and then the A/D converter of giving in the ARM master controller carries out analog-to-digital conversion; Input interface circuit comprises analog quantity interface circuit 1 and digital quantity interface circuit 2, analog quantity interface circuit 1 can accept 4～20mA electric current perhaps-10～+ analog input of 10V voltage; Because the A/D converter that carries of ARM master controller chip can only be imported small voltage, therefore need convert the current signal of input 4～20mA the input of into small voltage signal, and then the A/D converter of giving the ARM main control chip carries out analog-to-digital conversion; In like manner ,-10～+ 10V voltage analog input also need convert the input of small voltage signal earlier into, and then the A/D converter of giving the ARM main control chip carries out analog-to-digital conversion; The altogether corresponding 16 kinds of operating states of four road interfaces of digital quantity interface circuit 2, four tunnel digital-quantity input interface all adopt+input of 12V voltage; When wherein any one connect+during 12V voltage, then this road is by gating; The set point input signal of routing path is regulated by rheostat and is obtained.
ARM master controller 3 is made up of ARM controller and correspondent peripheral circuit, is mainly used in signal is handled, and output signal to the first power amplification drive circuit and the second power amplification drive circuit; The output of analog quantity input interface circuit 1 and digital quantity interface circuit 2 links to each other with the input of ARM master controller 23; It comprises ramp generator, step generator, vibrating signal, linearity controller; Different with traditional analog formula proportioning valve amplifier, signal processing circuit has been saved a large amount of analog circuits by ARM controller inter-process; Current controller also realizes that by the ARM controller it is input as the difference of ARM master controller and current feedback signal, and inside is that the PI controller is controlled to realize current closed-loop, and the parameter input interface of ARM controller links to each other with host computer; Its parameter can be set through the host computer human interface software; Partial parameters also can be regulated through potentiometer simultaneously, not only can effectively solve the drawback of above-mentioned traditional analog formula proportional amplifier, and economy is higher; Better reliability; Flexible operation is simple, and working service is simple and convenient, has broad application prospects.
The first power amplification drive circuit 4 and the second power amplification drive circuit 5 adopt reversal connection discharging type power driving circuit, and input links to each other with the output of ARM master controller, and output links to each other with proportioning valve respectively, is used for the two-way electromagnet of control ratio valve; The input signal PWM of power amplification drive circuit is produced by the ARM controller, and control signal is amplified the control metal-oxide-semiconductor through optocoupler, and inverter, optocoupler and metal-oxide-semiconductor constitute relief circuit, referring to shown in Figure 2; Reversal connection discharging type power amplification grade circuit is to replace traditional power amplification drive circuit; Power supply, high-power rectification component and high-power power tube are not being proposed under the prerequisite of specific (special) requirements; Significantly improve the rate of decay of proportion electro-magnet coil current, thereby improved the dynamic band width of proportion electro-magnet.
For satisfying the needs of ARM control program storage data, extended out external memory storage expanded circuit 7, memory makes things convenient for the various parameters of stored ratio amplifier, and the running status of proportional amplifier also can effectively be preserved after power down.
In order to communicate with host computer; Present embodiment has designed serial communication circuit 8; ARM master controller chip can communicate through RS232 serial communication interface and host computer; Not only can the parameter of host computer layout setting be sent in the ARM master control chip, also can current each parameter of electromagnet operation be presented on the host computer interface simultaneously, understand proportioning valve operation conditions, commissioning device etc. to the staff and bring great convenience.In addition, present embodiment has also designed usb communication circuit 9 and CAN bus interface circuit 10, with convenient amplifier function upgrading and on-line debugging in the future.
Proportioning valve valve core displacement sensor 11 is used for the displacement of real-time measurement scale valve core; The input of measuring amplifying circuit 12 links to each other with proportioning valve valve core displacement sensor 11, and output links to each other with ARM master controller 3; In displacement electrical feedback proportional control amplifier, constitute electric feedback closed loop through the displacement transducer that is contained on the proportioning valve, it is as shown in Figure 3 to measure amplifying circuit general structure block diagram; Sine-wave oscillator can produce the high_frequency sine wave of frequency and amplitude stability, and its output is divided into two-way: the one tunnel is input in the displacement transducer that carries on the proportioning valve, the high frequency carrier measured signal of output and input sine wave same frequency behind transducer; Another road is signal as a reference, is used for differentiating the phase place of the high-frequency carrier signal behind transducer; Because the carrier wave measured signal of reference and transducer output is with frequently but certain phase difference is arranged; Behind their process phase-sensitive detection circuit; Phase characteristic according to phase-sensitive detection circuit; The size and the phase difference of output signal have definite functional relation, thereby the output signal magnitude also becomes certain functional relation with spool displacement.
Claims (5)
1. a two-way numerical scale valve amplifier is characterized in that: comprise
Input interface circuit be used for converting the electric current and/or the voltage signal of input into voltage signal that the ARM master controller is suitable for, and then the A/D converter of giving in the ARM master controller carries out analog-to-digital conversion;
The ARM master controller, the output of input interface circuit links to each other with the input of ARM master controller, and this ARM controller comprises ramp generator, step generator, vibrating signal, linearity controller and PID controller, and the parameter input interface links to each other with host computer;
The first power amplification drive circuit, input links to each other with the output of ARM master controller, and output links to each other with proportioning valve, is used for the first via electromagnet of control ratio valve;
The second power amplification drive circuit, input links to each other with the output of ARM master controller, and output links to each other with proportioning valve, is used for the second road electromagnet of control ratio valve;
Power circuit is for ARM master controller, input interface circuit, the first power amplification drive circuit and the second power amplification drive circuit provide required stabilized power supply;
The proportioning valve valve core displacement sensor is used for the displacement of real-time measurement scale valve core;
Measure amplifying circuit, input links to each other with the proportioning valve valve core displacement sensor, and output links to each other with the ARM master controller.
2. two-way numerical scale valve amplifier according to claim 1 is characterized in that: also comprise the external memory storage expanded circuit.
3. two-way numerical scale valve amplifier according to claim 1 is characterized in that: also comprise serial communication circuit and/or usb communication circuit and/or CAN bus interface circuit.
4. two-way numerical scale valve amplifier according to claim 1, it is characterized in that: said input interface circuit comprises analog quantity interface circuit and digital quantity interface circuit.
5. two-way numerical scale valve amplifier according to claim 1 is characterized in that: said first, second power amplification drive circuit all adopts reversal connection discharging type power driving circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201273248U CN202550969U (en) | 2012-03-29 | 2012-03-29 | Two-way digital proportional valve amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201273248U CN202550969U (en) | 2012-03-29 | 2012-03-29 | Two-way digital proportional valve amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202550969U true CN202550969U (en) | 2012-11-21 |
Family
ID=47171529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201273248U Expired - Lifetime CN202550969U (en) | 2012-03-29 | 2012-03-29 | Two-way digital proportional valve amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202550969U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114384A (en) * | 2015-08-07 | 2015-12-02 | 徐州重型机械有限公司 | Self-adaptive control system of proportional valve and control method |
| CN108415333A (en) * | 2018-03-28 | 2018-08-17 | 宁波华液机器制造有限公司 | A kind of digital type proportion valve control cylinder system controller |
| CN109236768A (en) * | 2018-10-22 | 2019-01-18 | 中国石油集团渤海钻探工程有限公司 | A kind of electro-hydraulic proportional control system of delivery device with pressure |
-
2012
- 2012-03-29 CN CN2012201273248U patent/CN202550969U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114384A (en) * | 2015-08-07 | 2015-12-02 | 徐州重型机械有限公司 | Self-adaptive control system of proportional valve and control method |
| CN108415333A (en) * | 2018-03-28 | 2018-08-17 | 宁波华液机器制造有限公司 | A kind of digital type proportion valve control cylinder system controller |
| CN109236768A (en) * | 2018-10-22 | 2019-01-18 | 中国石油集团渤海钻探工程有限公司 | A kind of electro-hydraulic proportional control system of delivery device with pressure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202521031U (en) | Single-channel digital proportional valve amplifier | |
| CN100388144C (en) | Intelligent two-wire system electropneumatic valve positioner and control method therefor | |
| CN201520044U (en) | Fully-automatic high-efficiency injection molding machine controller | |
| CN202550969U (en) | Two-way digital proportional valve amplifier | |
| CN201662055U (en) | ARM platform-based three-element water feeding regulator of steam boiler | |
| CN202550968U (en) | Open-loop digital proportional valve amplifier | |
| CN205375072U (en) | Independent multi -axis motion controller | |
| CN202351652U (en) | Control system of servo electric cylinder | |
| CN201004168Y (en) | Intelligent control system for well measurement car | |
| Yu | The Design and Realization of PID Liquid Level Control System Based on S7-200 and EM235 | |
| CN103001553A (en) | Permanent-magnet synchronous motor full-digital alternating-current servo system based on DSP (digital signal processor) | |
| CN201769456U (en) | Control card of laser marking machine | |
| CN202742481U (en) | Servo power system of ceramic brick machine | |
| CN207393606U (en) | A kind of double hydraulic cylinder synchronous control system | |
| CN107794968A (en) | A kind of hydraulic excavator energy-conservation control system | |
| CN202794918U (en) | Intelligent supercharging water supply control system | |
| CN202141950U (en) | Automatic flow control apparatus for concrete water reducer raw material mixing | |
| CN207198634U (en) | The control device of anchor chain power and speed during being unmoored based on windlass | |
| CN206208910U (en) | A kind of pressure volume controller | |
| CN202215227U (en) | Ultra low speed control system of hydraulic logging truck | |
| CN205977428U (en) | Quick prototype controller of low -speed diesel engine | |
| CN205066813U (en) | Integrated form data acquisition system | |
| CN102707752A (en) | Multifunctional moment loading controller | |
| CN109019346A (en) | A kind of embedded intelligence crane amplitude variation speed regulating method and control crank | |
| CN202900843U (en) | Oil source for servo motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121121 |