CN102436196B - Universal electro-hydraulic position servo driver - Google Patents
Universal electro-hydraulic position servo driver Download PDFInfo
- Publication number
- CN102436196B CN102436196B CN 201110298822 CN201110298822A CN102436196B CN 102436196 B CN102436196 B CN 102436196B CN 201110298822 CN201110298822 CN 201110298822 CN 201110298822 A CN201110298822 A CN 201110298822A CN 102436196 B CN102436196 B CN 102436196B
- Authority
- CN
- China
- Prior art keywords
- driver
- module
- servo
- signal
- ssi
- 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 - Fee Related
Links
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 238000006073 displacement reaction Methods 0.000 claims abstract description 16
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 8
- 230000003321 amplification Effects 0.000 claims abstract description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 7
- 230000002452 interceptive effect Effects 0.000 claims abstract description 4
- 230000000007 visual effect Effects 0.000 claims abstract description 4
- 238000004891 communication Methods 0.000 claims abstract description 3
- 238000012545 processing Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 230000009897 systematic effect Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 230000010354 integration Effects 0.000 abstract 2
- 238000007781 pre-processing Methods 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000013481 data capture Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000033772 system development Effects 0.000 description 1
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
- Control Of Position Or Direction (AREA)
Abstract
The invention relates to a universal electro-hydraulic position servo driver. The existing electro-hydraulic servo system driver mainly adopts a distributed structure. In the universal electro-hydraulic position servo driver, an SSI (Small Scale Integration) conversion module is externally connected with an SSI displacement sensor and is used by the driver for the preprocessing of input signals. An ARM 7 core is the core of the driver. An operating panel is a visual interactive operating interface and mainly consists of a liquid crystal display, a keyboard input and a light-emitting diode (LED) indicator lamp. A serial port level conversion module provides an external control port for the driver and a computer can realize the real-time data communication and the accurate system control of the servo driver through the serial port level conversion module. A digital-to-analog (D/A) conversion and amplification module is an ARM 7 self-contained D/A module and can provides an electric control signal for a servo valve or a proportional valve. A power supply module is used for providing power for all modules of the driver. The universal electro-hydraulic position servo driver has the advantages that the structure is simple, the integration level is higher, the driver is convenient to operate, the cost is lower and the large-scale popularization and application are facilitated.
Description
Technical field
The present invention relates to a kind of integrated-type driver that is applied to electro-hydraulic position servo system, particularly relate to a kind of universal electro-hydraulic servo driver with numeral demonstration, panel control and external control function.
Background technology
21 century Mo, the electrohydraulic servo system development rapidly, and is increasing in the effect of industrial control field performance.Electrohydraulic servo system is the feedback control system that a kind of electric device and hydraulic actuating mechanism combine, and modal have electro-hydraulic position servo system, electro-hydraulic speed control system and an electro-hydraulic force control system.Electrohydraulic servo system as controlled quentity controlled variable, mainly solves the problem of following of controlled quentity controlled variable with the output quantity of topworks, realizes controlled quentity controlled variable to the timely tracking of specified rate under the prerequisite that guarantees enough accuracy, so electrohydraulic servo system claims again servomechanism.Hydraulic actuating mechanism commonly used has hydraulic cylinder and oil motor.
Present electrohydraulic servo system driver mainly still adopts distributed frame, and specific implementation has the industrial computer pattern of integrated data sampling and processing integrated circuit board and the single-chip microcomputer pattern of integrated high-speed high-precision A/D chip.The weak point of these driver implementations is: one, the AD conversion precision of hydraulic cylinder displacement signal is limited, the Displacement Feedback of inadaptable long stroke hydraulic cylinder, for example 16 Precision A/D chips, reach 0.01mm Displacement Feedback precision, hydraulic cylinder travel can only be limited in 600mm; Its two, it is more difficult that the high precision of AD conversion and high speed requirement make driver realize, the AD chip that satisfies simultaneously 1ms switching rate and 16 above precision is also fewer, cost is higher; They are three years old, the employing distributed frame is built, require the technician must have higher hardware and software basis, for example adopt the industrial computer pattern, need technician's acquaint with data capture card and industrial computer Program Appliance technology, for example adopt the single-chip microcomputer pattern, need the technician to be familiar with Single Chip Microcomputer (SCM) system hardware and software programming application technology.In sum, above deficiency has limited the application of electro-hydraulic servo Driving technique greatly.Application number is 200710125448.6 patent servo controller, pass through Closed Loop Control Unit, driver element, the single-chip microcomputer setup unit has been realized the closed-loop control of servo-drive system, system operational parameters needs to set by mcu programming, increase layman's operation easier, be unfavorable for promoting the use of of servo controller.
Summary of the invention
The object of the invention is to provide a kind of driver that is applied to electro-hydraulic position servo system, it is a kind of integrated-type driver that collects Displacement Feedback, PID computing and control output of one, being a kind of electro-hydraulic servo driver with numeral demonstration, panel control and external control function, is the universal electro-hydraulic servo driver that a kind of operational applications is similar to AC converter.
The technical scheme that technical solution problem of the present invention adopts is:
Universal electro-hydraulic position servo driver comprises that SSI modular converter, ARM7 core, serial ports level switch module, DA change amplification module, power module and guidance panel.
Described SSI modular converter is connected with the SSI displacement transducer, has 25 precision, can realize stroke 3m, resolution 1um, the Displacement Feedback of 1ms sampling as the pre-process of driver to input signal, is converted into the synchronous serial signal asynchronous serial signal that driver can be processed.
Described ARM7 core is the core of driver, and its major function is the writing of user program, to the processing of input signal and the storage that produces output signal, systematic parameter.Pid control algorithm in its Program calculates consuming time reaching below 200us.
Described guidance panel is a Visual Interactive operation interface, mainly formed by liquid crystal display, keyboard input and LED light, liquid crystal display is used for running status and the real-time parameter of display driver, and the handled easily personnel grasp the running status of system and carry out next step operation; Keyboard input facilitates the user that the operational factor of the servo-drive system minute parameter of classifying is specifically set; LED light real-time prompt system running status.
Described serial ports level switch module provides external control interface for driver, and computing machine can be crossed the serial ports level switch module and servo-driver be realized the accurate control of real-time Communication for Power and the system of data.
DA module (10 DA outputs that described DA conversion amplification module adopts ARM7 self to provide, the analog quantity Time Created of 1ms), output signal is the 0-10v voltage signal of standard or the current signal of 4-20ma, for servo-valve or proportioning valve provide the control electric signal.
Described power module input power is powered by single-phase alternating current, and input voltage is 220V, and output dc voltage 3.3V and 24V are used for providing power supply to the driver modules.
The present invention has following beneficial effect than prior art: compare traditional employing analog-to-digital conversion module, the SSI module that is integrated in driver has improved the resolution of input signal, and resolution can reach 25 and be precision, and has reduced installation cost; The guidance panel of driver has facilitated the user to the setting of driver operational factor and checked, and is simple to operation, intuitive display; Facilitated the adding of serial ports level switch module communicating by letter and the expansion of driver functions of industrial control computer and driver; Compare and realize the control of electro-hydraulic position servo system with programmable logic controller (PLC) and computing machine combination, the present invention is simpler, and integrated degree is higher, and easy to operate, and cost is lower, is conducive to promote the use of on a large scale.
Description of drawings
Fig. 1 is the driver interface arrangenent diagram;
Fig. 2 is the drive faceplate arrangenent diagram;
Fig. 3 is the drive system schematic diagram;
In figure: 1, LED light; 2, setup parameter; 3, real-time parameter; 4, button upwards; 5, operation button; 6, to knob down; 7, stop button; 8, alarm lamp; 9, mode conversion switch; 10, confirming button; 11, mode button.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, a kind of integrated-type driver that collects Displacement Feedback, PID computing and control output of one, its external interface that provides is as follows:
The SSI conversion module directly is connected with external displacement SSI sensor, clock+ wherein, clock-is clock signal, data+, data-is data-signal, 24VDC, the power interface that GND provides for displacement transducer for driver, the SSI conversion module is once exported 8 bit data, and sensor accuracy is more than the transmission several times of 8.
DA conversion amplification module is integrated in ARM7, precision is 10, the output signal type is the 2-20ma current signal of standard or the voltage signal of 0-10V, and above-mentioned output signal directly is connected with servo-valve, can carry out servocontrol to hydraulic actuating mechanism by servo-valve.
The serial ports level switch module is used for the 3.3V voltage signal of ARM7 inside is converted into the 3V operating voltage of module, and the P0.0 of ARM7 is used for the transmission of serial data, and P0.1 is used for the reception of serial data, the output of module with are connected the standard serial port data line of pin and connect.
The power module input power is powered by single-phase alternating current, and input voltage is 220V, and output dc voltage 3.3V and 24V are used for providing power supply to the driver modules.
Guidance panel is comprised of liquid crystal display, keyboard input and LED light three parts.The port P0.27-P1.22 of ARM7 connects LCD MODULE, and word control signal and the position control signal of charactron is provided, and LCD MODULE is connected multidigit nixie tube and is connected with guidance panel, be used for running status and the real-time parameter of display driver; 7 buttons on keyboard load module attended operation panel, the control signal of respectively corresponding 7 buttons of the port P0.20-P0.26 of ARM7.The LED light module is controlled by the port P1.23-P1.30 of ARM7, is used for the pilot lamp on display operating panel.
As shown in Figure 2, guidance panel provides a visual interactive operation interface to operating personnel, mainly is comprised of liquid crystal display, keyboard input and LED light three parts:
Liquid-crystal display section is used for setup parameter 2 and the real-time parameter 3 of display driver, and setup parameter 2 comprises the starting position, final position etc., real-time parameter 3 comprises displacement, speed, acceleration etc., can by the button 4 that makes progress, switch to knob down 6 between different parameters.
Key input section comprises 6 buttons and a mode conversion switch 9.6 buttons are respectively: mode button 11, upwards button 4, operation button 5, stop button 7, to knob down 6, confirming button 10.Pattern selects button 11 to be used for selecting different setup parameters; Upwards button 4 shows a upper setup parameter or carries out the value setting of parameter; Show next setup parameter or carry out the value setting of parameter to knob down 6; Confirming button 10 is used for confirming the parameter of user's setting; The parameter setting of operation button 5 excited users also drives driver, and when pressing operation button 5, driver is started working; Stop button 7 stops the operation of driver, and when pressing stop button 7, driver quits work; The operational mode that the operational mode of system model switch 9 conversion drivers, driver offer the user has automatically and manual two kinds;
Operational mode and the state of LED light 1 prompt system, system running pattern have automatically and manual two kinds, move and stop the running status that LED light is used for prompting system, forward and the reverse direction of motion of LED light prompting hydraulic actuating mechanism.Alarm lamp 8 is used for the state of prompt system, and when system made mistakes, alarm lamp 8 was lighted, and driver is sounded a buzzer.
As shown in Figure 3, the system principle of driver is as follows:
At first, the user utilizes guidance panel that systematic parameter is set, and the user utilizes mode conversion switch (9) to select the driver operational mode, after setting parameter, presses operation button (5), and driver is started working.
then, driver utilizes 25 high-precision SSI displacement transducers to gather the actual displacement signal, output signal Pv is to the ARM7 core of driver, the theoretical displacement Sp of output signal Pv and automation curve generator or manually curve generator output compares, generated error signal Er, the PID computing module of finishing in advance in system is by the processing to error signal Er, generate output signal PIDout, after need to processing through the digital-to-analogue amplification, output signal PIDout generates voltage U out or the current signal Iout of standard, thereby the driving mechanisms such as control servo-valve carry out real-time servocontrol to the position of the topworkies such as hydraulic cylinder.
At last, the position signalling of topworks is gathered and enters controlled circulation next time by the SSI displacement transducer again.
Claims (1)
1. Universal electro-hydraulic position servo driver comprises that SSI modular converter, ARM7 core, serial ports level switch module, DA change amplification module, power module and guidance panel, is characterized in that:
The external SSI displacement transducer of described SSI modular converter connects, and as the pre-process of driver to input signal, the synchronous serial signal is converted into the asynchronous serial signal that driver can be processed;
Described ARM7 core is the core of driver, and it is used for the processing of input signal and the storage that produces output signal, systematic parameter;
Described guidance panel is a Visual Interactive operation interface, mainly formed by liquid crystal display, keyboard input and LED light, liquid crystal display is used for running status and the real-time parameter of display driver, and the handled easily personnel grasp the running status of system and carry out next step operation; Keyboard input facilitates the user that the operational factor of the servo-drive system minute parameter of classifying is specifically set; LED light real-time prompt system running status;
Described serial ports level switch module provides external control interface for driver, and computing machine is realized the accurate control of real-time Communication for Power and the system of data to servo-driver by the serial ports level switch module;
The DA module that described DA conversion amplification module adopts ARM7 self to provide, output signal is the 0-10V voltage signal of standard or the current signal of 4-20mA, for servo-valve or proportioning valve provide the control electric signal;
Described power module input power is powered by single-phase alternating current, and input voltage is 220V, and output dc voltage 3.3V and 24V are used for providing power supply to the driver modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110298822 CN102436196B (en) | 2011-09-28 | 2011-09-28 | Universal electro-hydraulic position servo driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110298822 CN102436196B (en) | 2011-09-28 | 2011-09-28 | Universal electro-hydraulic position servo driver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102436196A CN102436196A (en) | 2012-05-02 |
| CN102436196B true CN102436196B (en) | 2013-11-06 |
Family
ID=45984300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110298822 Expired - Fee Related CN102436196B (en) | 2011-09-28 | 2011-09-28 | Universal electro-hydraulic position servo driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102436196B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090174B (en) * | 2015-09-08 | 2017-07-21 | 农业部南京农业机械化研究所 | A kind of intelligent mobile cultivation rack device and its control method |
| CN110333693A (en) * | 2019-07-26 | 2019-10-15 | 安徽日发纺织机械有限公司 | A kind of more servo-control systems of Revolving cup spinning |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2158971A (en) * | 1984-02-22 | 1985-11-20 | Koehring Co | Digital servovalve structure and method |
| IN169096B (en) * | 1987-06-12 | 1991-09-07 | Int Control Automation Finance | |
| CN101464681B (en) * | 2007-12-20 | 2011-03-30 | 比亚迪股份有限公司 | Servo controller and electrohydraulic servo system |
| CN202210222U (en) * | 2011-09-28 | 2012-05-02 | 杭州电子科技大学 | General-purpose electrohydraulic position servo driver |
-
2011
- 2011-09-28 CN CN 201110298822 patent/CN102436196B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102436196A (en) | 2012-05-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105242640B (en) | A kind of novel high-speed, high precision multiple-axis servo motion controller circuit | |
| CN200950316Y (en) | Work teaching aid using man-machine interface and PLC control | |
| CN103076766B (en) | A kind of print tank machine digital control system based on digital motion controller | |
| CN105353726A (en) | Special-purpose controller of electronic press, and control method | |
| CN102739146B (en) | Servo-control system | |
| CN104009679A (en) | Control system of servo motors | |
| CN202210222U (en) | General-purpose electrohydraulic position servo driver | |
| CN102436196B (en) | Universal electro-hydraulic position servo driver | |
| CN102830658A (en) | Embedded numerical control system for multi-shaft numerical control machine tool | |
| CN104317252A (en) | Small deep-hole drilling machine numerical control system | |
| CN204536817U (en) | A kind of controller and adopt the multi-station material transfer system of this controller | |
| CN108015776B (en) | Robot control system based on compactRIO | |
| CN103123468A (en) | Servo controller for three-shaft antenna test robot | |
| CN201534391U (en) | Cam control device of high-speed press | |
| CN103256419B (en) | Non-oscillation high-sensitivity controller for ordinary electrically operated valve, and control method thereof | |
| CN204155114U (en) | Small-sized deep hole drilling machine digital control system | |
| CN215006354U (en) | Integrated PLC, vision or force feedback integrated actuating mechanism | |
| CN202694193U (en) | High-precision one-dimensional automatic calibration device | |
| CN102122147A (en) | Embedded numerically controlled drill lathe control system and work method | |
| CN201156348Y (en) | Training bench for electric appliance intelligent control | |
| CN201974664U (en) | LCD (liquid crystal display) electronic manipulator of novel revolving door control system | |
| CN205750445U (en) | A kind of controller for low-voltage electrical apparatus detection equipment | |
| CN201638066U (en) | Embedded numerically controlled drill lathe control device | |
| CN203228237U (en) | Learning-memorizing type manipulator system | |
| CN201654507U (en) | Single chip control system for cremator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Jinlong Inventor before: Ni Jing Inventor before: Shao Bin Inventor before: Meng Zhen Inventor before: Chen Guojin |
|
| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170606 Address after: 523000 Guangdong city of Dongguan province Changan Zhen Sha Chong Hing Tai Po District Community Road No. 13 layer Patentee after: DONGGUAN TAIJIASHENG INDUSTRIAL Co.,Ltd. Address before: Hangzhou City, Zhejiang province 310018 Xiasha Higher Education Park No. 2 street Patentee before: HANGZHOU DIANZI University |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 |