CN203927006U - A kind of electric actuator - Google Patents
A kind of electric actuator Download PDFInfo
- Publication number
- CN203927006U CN203927006U CN201420276035.3U CN201420276035U CN203927006U CN 203927006 U CN203927006 U CN 203927006U CN 201420276035 U CN201420276035 U CN 201420276035U CN 203927006 U CN203927006 U CN 203927006U
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- China
- Prior art keywords
- electric actuator
- driving mechanism
- electrical control
- induction device
- control mechanism
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Abstract
The utility model discloses a kind of electric actuator, comprise housing, handwheel, switching handle, driving mechanism and electrical control mechanism, described driving mechanism and electrical control mechanism are all arranged in enclosure interior chamber, and described driving mechanism comprises drive motor, the retarder connecting with motor shaft; Described electrical control mechanism comprises CPU, position induction device and journey controller, described CPU adopts intelligent fuzzy dynamic PID algorithm design, described position induction device comprises servoamplifier, servoamplifier, by the deviation of comparison control signal and position feed back signal, is exported 4-20mA signal; Described journey controller connects with described reducer output shaft.The utility model control accuracy is high, reduces electric and mechanical shock, the object in prolonged mechanical life-span.
Description
Technical field
The utility model relates to a kind of electric actuator in industrial automation.
Background technique
Electric actuator is a kind of valve control device conventional in industrial intelligent control system, and the electrical signal that control system is provided is converted into corresponding displacement, drives valve to reach the desired position of system, have simple to operate, automaticity advantages of higher; Damping is in mechanical vibrating system, and due to surface friction drag heat-dissipating, system mechanics can reduce to be converted into the characteristic that the interior amplitude that can cause declines gradually.
In electric proportional-regulation valve is used, motor frequent starting, adjusts valve position, and the each action of standard regulation is no more than 3 half-waves and adjusts to the right place, i.e. each action can realize accurately location back and forth for 3 times half.In order to realize this function, there are at present the reversing braking of the motor of employing, mechanical braking mode or direct current energy consumption braking.Reversing braking mechanical shock and interference are larger, and electrical equipment and mechanical life shorten, and need to consume electric energy; Mechanical braking mode can lose braking effect after wearing and tearing gradually, also has the in the situation that of braking failure, and motor rotation blockage, the time, slightly length will motor damage; Dynamic braking need to be joined a set of electric capacity or rectification circuit in addition, and needs corresponding control circuit, when DC electrical source damage or control circuit damage, causes brakeless or is in braking state always, causes security incident.
Model utility content
For solving the problems of the technologies described above, the utility model provides a kind of electric actuator, to reach the object that control accuracy is high, reduce electric and mechanical shock.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of electric actuator, comprise housing, handwheel, switching handle, driving mechanism and electrical control mechanism, described driving mechanism and electrical control mechanism are all arranged in enclosure interior chamber, and described driving mechanism comprises drive motor, the retarder connecting with motor shaft;
Described electrical control mechanism comprises CPU, position induction device and journey controller, described CPU adopts intelligent fuzzy dynamic PID algorithm design, described position induction device comprises servoamplifier, servoamplifier, by the deviation of comparison control signal and position feed back signal, is exported 4-20mA signal; Described journey controller connects with described reducer output shaft.
Further, described retarder is that worm-and-wheel gear connects nut-screw rod transmission device composition.
Further, described position induction device adopts conductive plastic potentiometer as sensor.
Further, described housing is provided with man-machine interface and operating button.
Pass through technique scheme, a kind of electric actuator that the utility model provides, adopt advanced control algorithm to reduce overshoot (inertia coasting operation), this algorithm mathematics model is to be based upon mechanical transmission have relatively-stationary damping and just lost on basis when electric energy drives with relatively-stationary inertia (kinetic energy) at motor, the in the situation that of each motor dead electricity, the overshoot of electric valve (inertia coasting operation) is relatively-stationary, generally through the operation of 10 to 20 times, CPU capable of dynamic collect this open to or close to coasting operation distance, in service at follow-up motor so, can put forward previous coasting operation distance to motor power-off, by mechanical damping effect, allow electric valve be parked in predetermined valve position, realize the adjusting of valve position.
The utility model, in the situation that need not braking, has improved control accuracy, reduces electric and mechanical shock, increases the service life, and reduces energy consumption, has avoided the even defect such as motor damage of the motor rotation blockage that occurs in braking process in the past.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below.
Fig. 1 is the disclosed a kind of electric actuator schematic appearance of the utility model embodiment.
Numeral in figure:
1, housing 2, handwheel 3, switching handle 4, electric box cover
5, motor box 6, flange
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technological scheme in the utility model embodiment is clearly and completely described.
With reference to figure 1, the utility model provides a kind of electric actuator, comprise housing 1, handwheel 2, switch handle 3, driving mechanism and electrical control mechanism, driving mechanism and electrical control mechanism are all arranged in the internal chamber of housing 1, the turbine and worm retarder that driving mechanism comprises drive motor, connects with motor shaft, drive motor outside is provided with electric box; Electrical control mechanism comprises CPU, position induction device and journey controller, its outer cover has electric box cover 4, electric box cover 4 is provided with liquid crystal display panel and operating button, CPU adopts intelligent fuzzy dynamic PID algorithm design, position induction device comprises servoamplifier, and servoamplifier, by the deviation of comparison control signal and position feed back signal, adopts conductive plastic potentiometer as sensor, output 4-20mA signal, journey controller connects with described reducer output shaft.
After electric actuator connects by flange 6 and valve, must carry out valve parameter setting party can put into operation, system parameter setting is that user requires to arrange according to the control system of oneself, adopt three phase electric machine to drive the last actuate valve stem nut of worm and gear, Stem Mut makes valve rod generation motion make valve open or cut out.The pid algorithm model that CPU adopts is based upon mechanical transmission relatively-stationary damping, i.e. motor power-off, and the overshoot of electric valve is relatively-stationary; In actual mechanical process, through the open and close valve of 10 to 20 times, CPU capable of dynamic collect out to close to coasting operation distance, in follow-up operation process, put forward previous coasting operation distance to motor power-off, by mechanical damping effect, allow electric valve be parked in needed valve position, realize the adjusting of valve position.
The utility model can use the effect of driving mechanism mechanical damping in the situation that need not braking, and adopts advanced control algorithm to reduce coasting operation, improves control accuracy, reduces electric and mechanical shock, has extended mechanical life, reduces energy consumption.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of above-described embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (4)
1. an electric actuator, it is characterized in that, comprise housing, handwheel, switching handle, driving mechanism and electrical control mechanism, described driving mechanism and electrical control mechanism are all arranged in enclosure interior chamber, and described driving mechanism comprises drive motor, the retarder connecting with motor shaft;
Described electrical control mechanism comprises CPU, position induction device and journey controller, described CPU adopts intelligent fuzzy dynamic PID algorithm design, described position induction device comprises servoamplifier, servoamplifier, by the deviation of comparison control signal and position feed back signal, is exported 4-20mA signal; Described journey controller connects with described reducer output shaft.
2. a kind of electric actuator according to claim 1, is characterized in that, described retarder is that worm-and-wheel gear connects nut-screw rod transmission device composition.
3. a kind of electric actuator according to claim 1, is characterized in that, described position induction device adopts conductive plastic potentiometer as sensor.
4. a kind of electric actuator according to claim 1, is characterized in that, described housing is provided with man-machine interface and operating button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420276035.3U CN203927006U (en) | 2014-05-27 | 2014-05-27 | A kind of electric actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420276035.3U CN203927006U (en) | 2014-05-27 | 2014-05-27 | A kind of electric actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203927006U true CN203927006U (en) | 2014-11-05 |
Family
ID=51822817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420276035.3U Expired - Fee Related CN203927006U (en) | 2014-05-27 | 2014-05-27 | A kind of electric actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203927006U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054734A (en) * | 2016-07-15 | 2016-10-26 | 常州灵骏机器人科技有限公司 | Integrated servo actuator based on industrial ethernet |
| CN107763287A (en) * | 2017-11-20 | 2018-03-06 | 北京精密机电控制设备研究所 | A kind of electronic breather valve actuator devices |
-
2014
- 2014-05-27 CN CN201420276035.3U patent/CN203927006U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054734A (en) * | 2016-07-15 | 2016-10-26 | 常州灵骏机器人科技有限公司 | Integrated servo actuator based on industrial ethernet |
| CN107763287A (en) * | 2017-11-20 | 2018-03-06 | 北京精密机电控制设备研究所 | A kind of electronic breather valve actuator devices |
| CN107763287B (en) * | 2017-11-20 | 2019-10-22 | 北京精密机电控制设备研究所 | A kind of electronic breather valve actuator devices |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20160527 |