CN201749325U - Servo valve control module - Google Patents
Servo valve control module Download PDFInfo
- Publication number
- CN201749325U CN201749325U CN 201020176702 CN201020176702U CN201749325U CN 201749325 U CN201749325 U CN 201749325U CN 201020176702 CN201020176702 CN 201020176702 CN 201020176702 U CN201020176702 U CN 201020176702U CN 201749325 U CN201749325 U CN 201749325U
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- control module
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- servo
- host cpu
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Abstract
The utility model relates to a servo valve control module, which comprises a main CPU control unit, a signal input part and a signal output part. The signal input part comprises a first signal conditioning unit and an A/D acquisition unit, and the signal output part comprises a D/A conversion unit and a second signal conditioning unit. A voltage or current signal collected from an external actuating mechanism is transmitted to the main CPU control unit through the first signal conditioning unit and the A/D acquisition unit, is processed through the main CPU control unit, and is then transmitted to a servo mechanism through the D/A conversion unit and the second signal conditioning unit. The main CPU control unit is also provided with a CAN bus interface for signal interaction with the outside. The utility model has the advantages of convenient use and accurate control.
Description
Technical field
The utility model relates to a kind of servo-valve control module.
Background technology
Servo-drive system, servomechanism claims servomechanism again, is the automatic control system that output controlled volumes such as the position that makes object, orientation, state can be followed any variation of input target (or set-point).The structure composition of servo-drive system and other forms of feedback control system do not have difference in principle.
Servo-drive system is used for automatic driving, cannon control and the director of boats and ships at first, is generalized to the guidance of a lot of fields, particularly automatic lathe, aerial position control, guided missile and airship etc. afterwards gradually.Adopting servo-drive system mainly is in order to reach following several purpose: 1. remove to control high power load with the miniwatt command signal.Cannon control and rudder for ship control are exactly typical example.2. do not having under the situation of mechanical connection, be positioned at output shaft at a distance, realizing the long distance synchrodrive by input shaft control.3. make the output mechanical shift accurately follow the tracks of electric signal, as record and indicating instrument etc.
Along with the process of modern industrialization, need more controlled volume accurately be controlled such as electric current, voltage, position signalling etc., so servo-drive system is used more and more widely.For industrial transports such as flat bed transport vehicle, bridging equipment special vehicle, some parts has adopted servo-drive system in the middle of production run, but does not find suitable control hardware.
Summary of the invention
The utility model provides a kind of servo-valve control module that can realize telecommunication.
For achieving the above object, the technical solution adopted in the utility model is: a kind of servo-valve control module, the stimulus part that comprises the host CPU control module, is made of the first signal condition unit and A/D collecting unit, the segment signal output that is made of D/A converting unit and secondary signal conditioning unit; Voltage or the current signal gathered from outside topworks pass to described host CPU control module through the described first signal condition unit, A/D collecting unit, voltage signal or current signal are transferred to servo control mechanism through D/A converting unit and secondary signal conditioning unit after described host CPU control module is handled; Also be provided with the CAN bus interface that is used for outside interactive signal on the described host CPU control module.
Preferably, described host CPU control module is provided with the debugging interface that is used for field download, update routine.
Preferably, also be provided with EMC electrostatic protection unit on the described host CPU control module.
Preferably, also be provided with the DC-DC voltage conversion unit that is used for the voltage transitions of power supply is become to adapt to described host CPU control module on the described control module.
The utility model principle of work is: after the parameter of gathering from topworks was converted into voltage signal, this voltage signal passed to the host CPU control module through signal condition, AD sampling, and this is a stimulus part; Voltage signal or current signal are transferred to servo control mechanism through DA conversion, signal condition after the CPU control module is handled, this is a segment signal output; External command can be transferred to the host CPU control module through the CAN bus interface, needs the outside order of carrying out also can give outside topworks by the CAN bus transfer after treatment.
Servo-valve control module of the present utility model is easy to use, control is accurate.
Description of drawings
Accompanying drawing 1 is the schematic diagram of servo-valve control module of the present invention.
In the above accompanying drawing: 1, host CPU control module; 2, the first signal condition unit; 3, A/D collecting unit; 4, D/A converting unit; 5, secondary signal conditioning unit; 6, CAN bus interface; 7, debugging interface; 8, DC-DC voltage transformation module.
Embodiment
Below in conjunction with embodiment shown in the drawings the utility model is further described:
Shown in accompanying drawing 1, the stimulus part that this servo-valve control module comprises host CPU control module 1, be made of the first signal condition unit 2 and A/D collecting unit 3, the segment signal output, the CAN bus interface 6 that constitute by D/A converting unit 4 and secondary signal conditioning unit 5; Voltage or the current signal of gathering (as gather the location parameter of outside topworks by displacement transducer) from outside topworks pass to host CPU control module 1 through the described first signal condition unit 3, A/D collecting unit 2, voltage signal or current signal are transferred to servo control mechanism through D/A converting unit 4 and secondary signal conditioning unit 5 after host CPU control module 1 is handled; External command can be transferred to host CPU control module 1 through CAN bus interface 6, needs the outside order of carrying out also can be transferred to outside topworks by CAN bus interface 6 after handling through host CPU control module 1.
For convenience the program in the host CPU control module 1 is carried out field download and debugging, host CPU control module 1 is provided with debugging interface 7.Also be provided with EMC electrostatic protection unit 8 on the host CPU control module 1.Also be provided with the DC-DC voltage conversion unit 8 that is used for the voltage transitions of power supply is become to adapt to host CPU control module 1 on the control module.Whole servo-valve control module adopts the sealed aluminum shell.
Above-mentioned servo-valve control module when utilization in requisition for possessing following condition:
1, fieldbus connects CANBUS, and connecting line is reduced, and maintenance is easy, and communication distance is far away, and antijamming capability is strong.
2, electric current output 0～50mA or 0～100mA according to different servo-drive systems, adopt different range of current to reach the precision that needs and have satisfied different servo-valve terminals, thereby accurately control.
3, voltage output 0～10V satisfies the unit (controlling or other such as air pressure) that some needs voltage signals are controlled.
4, analog acquisition, the collection position signal also promotes precision to 12, and control accuracy is improved.
This servo-valve control module is used through debugging, reaches following requirement:
1, adopts the sealed aluminum shell, be applicable to outdoor study.
2, have the CAN bus interface, can realize telecommunication (about 50m).
3, have debugging interface, but field download, update routine.
4, input signal is adjusted into the input range of A/D.
5, add EMC protection and EMI filtering, be applied to the automobile grade.
6, built-in temperature detection prevents that controller is overheated.
7, secondary power supply is handled, and reduces the influence of electric voltage dropping.
The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the present utility model.
Claims (4)
1. servo-valve control module, it is characterized in that: the stimulus part that comprises the host CPU control module, is made of the first signal condition unit and A/D collecting unit, by the segment signal output that D/A converting unit and secondary signal conditioning unit constitute also is provided with the CAN bus interface that is used for outside interactive signal on the described host CPU control module; Voltage or the current signal gathered from outside topworks pass to described host CPU control module through the described first signal condition unit, A/D collecting unit, voltage signal or current signal are transferred to servo control mechanism through D/A converting unit and secondary signal conditioning unit after described host CPU control module is handled.
2. servo-valve control module according to claim 1 is characterized in that: described host CPU control module is provided with the debugging interface that is used for field download, update routine.
3. servo-valve control module according to claim 1 is characterized in that: also be provided with EMC electrostatic protection unit on the described host CPU control module.
4. servo-valve control module according to claim 1 is characterized in that: also be provided with the DC-DC voltage conversion unit that is used for the voltage transitions of power supply is become to adapt to described host CPU control module on the described control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020176702 CN201749325U (en) | 2010-04-30 | 2010-04-30 | Servo valve control module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020176702 CN201749325U (en) | 2010-04-30 | 2010-04-30 | Servo valve control module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201749325U true CN201749325U (en) | 2011-02-16 |
Family
ID=43583996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020176702 Expired - Lifetime CN201749325U (en) | 2010-04-30 | 2010-04-30 | Servo valve control module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201749325U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233937A (en) * | 2013-05-17 | 2013-08-07 | 哈尔滨理工大学 | Digital controller of electrohydraulic servo valve |
-
2010
- 2010-04-30 CN CN 201020176702 patent/CN201749325U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233937A (en) * | 2013-05-17 | 2013-08-07 | 哈尔滨理工大学 | Digital controller of electrohydraulic servo valve |
| CN103233937B (en) * | 2013-05-17 | 2015-11-04 | 哈尔滨理工大学 | Digital controller of electrohydraulic servo valve |
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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: 20110216 |