CN202471239U - Vibration calibrating device based on linear motor - Google Patents
Vibration calibrating device based on linear motor Download PDFInfo
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- CN202471239U CN202471239U CN2012200362210U CN201220036221U CN202471239U CN 202471239 U CN202471239 U CN 202471239U CN 2012200362210 U CN2012200362210 U CN 2012200362210U CN 201220036221 U CN201220036221 U CN 201220036221U CN 202471239 U CN202471239 U CN 202471239U
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Abstract
The utility model discloses a vibration calibrating device based on a linear motor for calibrating the measure accuracy of low-frequency vibration monitoring instruments or sensors. The device comprises a user interaction module, a controller, a driver, a linear motor, a support platform, two long stroke fixation rails, two movement guide rails, a test bearing platform and a laser feedback module. According to the utility model, the involved vibration monitoring instruments or sensors are calibrated by the vibration calibrating device combined with a linear motor, a laser unit and a grating ruler. Besides, the vibration calibrating device is available within a low vibration frequency range with testing requirements of high accuracy and long stroke satisfied.
Description
Technical field
The utility model relates to vibration calibrating technical field, relates in particular to a kind of vibration calibrating installation based on linear electric motors.
Background technology
Existing machinery vibration calibrating installation is main with electromagnetic type shaking table, mechanical shaker mainly.The electromagnetic type shaking table is present main flow vibration calibrating installation; It uses electromagnetic force to promote slide unit and produces vibration; And produce position feed back signal through the mode of grating encoder or laser interference, thus reaching the purpose of accurate control, the advantage of electromagnetic type shaking table is that frequency can be done very highly; Simultaneously can guarantee positional precision preferably; Main shortcoming is that stroke is very short, frequency can not be too low, thermal value is very big, and large-scale electromagnetic type shaking table often needs water-cooling, makes it be not suitable for the vibration calibrating of low frequency, high acceleration like this.Mechanical shaker then uses accurate driver drives motor or hydraulic means, promotes slide unit and produces vibration, and feedback assembly and electromagnetic type shaking table are similar; Its advantage is that frequency can be very low; Weighing load can be very big, and stroke is longer, and shortcoming is that walk precision and oscillation power spectral density is not high; Mechanical noise is big, therefore also is not suitable for the calibrating as vibration.
Yet; Though said method has advantage separately, can't satisfy simultaneously perhaps and can not satisfy low frequency well, test precision is high; The long requirement of test stroke is necessary to design a kind of vibration calibrating installation that can effectively satisfy above-mentioned each item technical requirement to this kind technological deficiency.
The utility model content
The purpose of the utility model is the defective that exists to above-mentioned background technology, provide a kind of can satisfy simultaneously in low vibration frequency range measure and the vibration calibrating installation that measuring accuracy is high, stroke is long based on linear electric motors.
For realizing above-mentioned purpose, the measurement accuracy that a kind of vibration calibrating installation based on linear electric motors that the utility model provides is used to examine and determine tested instrument or sensor.This a kind of vibration calibrating installation based on linear electric motors comprises a user interactive module, a controller, a driver, a straight line motor, a support platform, two long stroke trapped orbits, two motion guide rails, a test carrying platform and a Laser feedback module; Said user interactive module be used for the user import corresponding user instruction and with this user instruction send said controller to and accept the output of said controller various data messages and with this plurality of data information interactionization convey to the user; Said controller is used for user instruction that the process user interactive module sends into and according to user instruction Control Driver output corresponding driving signal; Be used to control the laser cell projecting laser and be used to handle the position signalling that grating encoder is imported; Said driver is used to accept drive signal that controller sends into and reciprocating along long stroke trapped orbit according to the drive linear electric motors; Said linear electric motors comprise that further the linear electric motors that a straight line electric motor primary and is fixed on the support platform are secondary; Said long stroke fixed guide is fixed on the secondary both sides of linear electric motors abreast; Motion guide rail is erected at the top of long stroke fixed guide respectively; And the bottom of the top of motion guide rail and test carrying platform interfix so that test carrying platform can linear electric motors secondary above move; The bottom of said test carrying platform and the elementary top of said linear electric motors are mutually permanently connected so that the elementary test carrying platform that drives of linear electric motors is done linear to-and-fro movement; Said tested vibration monitoring instrument or sensor are fixed on the test carrying platform; Said Laser feedback module further comprises a laser cell and a grating chi; Said grating chi is installed on the lateral surface of support platform, and said laser cell is suspended on the support platform outside and is used for projecting laser on the grating chi and detect the light signal of reflection position situation on the grating chi and feed back to controller.
In sum; A kind of vibration calibrating installation based on linear electric motors of the utility model can be done the vibration calibrating to tested vibration testing instrument or sensor by the common cooperation of linear electric motors, laser cell and grating chi; In addition; A kind of vibration calibrating installation based on linear electric motors of the utility model not only can satisfy in low vibration frequency range and carries out, and can guarantee the high precision of vibration-testing and the test request of long stroke.
Description of drawings
Fig. 1 is the module diagram of a kind of vibration calibrating installation based on linear electric motors of the utility model.
Fig. 2 is the part-structure synoptic diagram of a kind of vibration calibrating installation based on linear electric motors of the utility model.
Embodiment
By the technology contents, the structural attitude that specify the utility model, reached purpose and effect, below give an example now embodiment and conjunction with figs. know clearly and give explanation.
See also Fig. 1 and Fig. 2, the measurement accuracy that a kind of vibration calibrating installation 100 based on linear electric motors of the utility model is used to examine and determine tested vibration monitoring instrument (not shown) or sensor (not shown).Should comprise that the long stroke trapped orbit of a user interactive module 1, a controller 2, a driver 3, a straight line motor 4, a support platform 5, two 6, two motion guide rails 7, tested carrying platform 8, a Laser feedback module 9 based on vibration calibrating installations 100 of linear electric motors.
Said linear electric motors 4 further comprise a straight line motor secondary 41 and a straight line electric motor primary 42.Said linear electric motors secondary 41 are fixed on support platform 5 length directions straight, and said long stroke fixed guide 6 is installed in the both sides of linear electric motors secondary 41 abreast.Said two motion guide rails 7 are erected at the top of two long stroke fixed guides 6 respectively, and the bottom of the top of motion guide rail 7 and test carrying platform 8 interfixes so that test carrying platform 8 and can above linear electric motors secondary 41, move.The top of the bottom of said test carrying platform 8 and said linear electric motors elementary 42 is mutually permanently connected, and linear electric motors elementary 42 can drive test carrying platform 7 and do linear to-and-fro movement along the length direction of said long stroke fixed guide 6.Said Laser feedback module 9 further comprises a laser cell 91 and a grating chi 92.Said laser cell is the laser head of a band feedback circuit.The equal in length of the length of said grating chi 92 and linear electric motors secondary 41, and this grating chi 92 is provided with a plurality of light signal feedback points that reflect the position situation.Said laser cell 91 through one be fixed on test on the carrying platform 8 suspender (indicating among the figure) and can be suspended on the outside of support platform 5.
Please continue and consult Fig. 1 and Fig. 2; Said user interactive module 1 is used for the user and imports corresponding user instruction and send this user instruction to said controller 2, accept said controller 2 outputs various data messages and with this plurality of data information interactionization convey to the user.
Said controller 2 () is used for user instruction that process user interactive module 1 sends into and according to user instruction Control Driver 3 output corresponding driving signals, and (two) are used to control the light signal that laser cell 91 projecting lasers and (three) are used to handle the band position feedback information of Laser feedback module 9 inputs.The input end of said controller 2 interconnects with the output terminal of user interactive module 1 and the output terminal of laser cell 91 respectively, and the output terminal of controller 2 is connected with the input end of laser cell 61 and the input end of driver 3 respectively.
Said driver 3 is used for drive signal that processing controller 2 sends into and according to drive linear electric motors motion 4.The input end of the output terminal of said driver 3 and linear electric motors 4 interconnects.
Said linear electric motors 4, the driving of the drive signal of seeing off by driver 3 and can drive test carrying platform 8 is made linearity along the length direction of long stroke trapped orbit 6 to-and-fro movement.Particularly; Linear electric motors 4 are under drive; Said linear electric motors elementary 42 drive test carrying platform 8 along doing linear to-and-fro movement on long stroke trapped orbit 6 length directions; In this simultaneously, the laser cell 91 that is suspended on test carrying platform 8 outsides is also done linear to-and-fro movement with test carrying platform 8 along the length direction of long stroke trapped orbit 6.
During the vibration calibrating, said tested vibration monitoring instrument or sensor are fixed on test carrying platform 8.
The grating chi 92 of said Laser feedback module 9 is installed on the lateral surface of support platform 5, and over against laser cell 91.
The laser cell 91 of said Laser feedback module 9 is suspended on the outside of test carrying platform 8, is used to detect the position signalling on the grating chi 92 and is sent to controller 2.In this specific embodiment, laser cell 91 is along with test carrying platform 8 is done linear to-and-fro movement along the length direction of long stroke trapped orbit 6.But the light signal with positional information of line correspondence electric motor primary 42 on long stroke trapped orbit 8 of said laser cell 91 collection and treatment grating chis 92 feedbacks, said controller 2 is eliminated the error that exists in a kind of vibration calibrating installation 100 operational processs based on linear electric motors of the utility model through the PID control strategy.Concrete; Controller 2 combines specified rate to handle and further make the specified rate in next moment the position signalling that obtains and sends to driver 3, so that regulate stability and the accuracy of the utility model based on vibration calibrating installation 100 operations of linear electric motors at any time.Treat based on the vibration calibrating installation of linear electric motors 100 after the stable and corresponding vibration data information of collection analysis, can be drawn verification result based on the vibration data of the vibration calibrating installation 100 of linear electric motors with examining the indicating value data of equipment through contrast.
The applied a kind of concrete job step of vibrating calibration method 200 of a kind of vibration calibrating installation 100 based on linear electric motors of the utility model is following:
Step 1: but tested vibration monitoring instrument or sensor are fixed on test carrying platform 8 and make tested vibration monitoring instrument or sensor be in test mode;
Step 2: start to move to based on the vibration calibrating installation 100 of linear electric motors and can accurately examine and determine tested vibration monitoring instrument or sensor status based on the vibration calibrating installation 100 of linear electric motors and through PID control strategy adjustment the utility model;
Step 3: the user is through reading the vibration calibrating data that regulation is exported based on the vibration calibrating installation 100 of linear electric motors constantly based on the vibration calibrating installation 100 of linear electric motors;
Step 4: the user reads the vibration-testing data of same tested vibration monitoring instrument of the regulation moment or sensor output through tested vibration monitoring instrument or sensor;
Step 5: relatively data and vibration-testing data are examined and determine in vibration, draw the vibration verification result.
The roughly principle of work of a kind of vibration calibrating installation 100 based on linear electric motors of the utility model is following:
At first; The running status stability of a kind of vibration calibrating installation 100 adjustment based on linear electric motors of the utility model self, running precision are to guarantee the test accuracy of vibration calibrating: the user through user interactive module 1 with the given vibration parameters of user (in this preferred specific embodiment; The given vibration parameters of user mainly refers to the vibration parameters of acceleration, stroke, frequency three aspects) the said controller 2 of input; Said controller 2 is controlled said driver 3 according to the given vibration parameters of sending into of user and is seen the corresponding driving signal off and give said linear electric motors 4 and drive linear electric motors 4 and drive the tested vibration monitoring instrument or the sensor that are installed on the test carrying platform 8 and make linear reciprocal movement, and controller 2 control laser cells 91 are gathered the light signal before and after 92 reflections of grating chis and the position signalling of this light signal reflection handled give controller 2 after being output into count pulse.Concrete; The variation of position can cause that laser cell 91 there are differences before and after being incident upon laser-bounce on this grating chi 92 in the laser cell 91 to-and-fro movement processes, and the motion of promptly said laser cell 91 causes that said laser cell 91 sends into the laser of grating chi 92 and between the laser of seeing off after 62 reflections of grating chi, there are differences.Laser cell 91 is handled and is exported corresponding counting pulse signal and gives controller 2 according to the light signal difference before and after the reflection.The PID count pick up pulse signal of controller 2 also combines specified rate to handle; Simultaneously; Provide the specified rate in next moment and send to driver 3, this driver 3 converts corresponding count pulse speed and displacement signal to and drives linear electric motors 4 does corresponding motion.Treat to vibrate calibrating accordingly after the requirement of vibration calibrating data fit vibration vertification regulation of user's interactive module 1 reflection.Vibration calibrating installation 100 based on linear electric motors can be accomplished the running status stability to self, the adjustment of running precision through above-mentioned action.
Secondly, the collection of vibration calibrating data: controller 2 control laser cells 91 gather 92 reflections of grating chis based on the vibration calibrating data of the vibration calibrating installation of linear electric motors 100 self and will vibrate the calibrating data and export to user's (said vibration is examined and determine data and reflected with the form of vibration acceleration and vibrational waveform) through user interactive module 1; Tested vibration monitoring instrument or sensor also will reflect reflection that vibration monitoring instrument and sensor the record vibration-testing data (said vibration-testing data reflect with the form of vibration acceleration and vibrational waveform) based on the vibration calibrating installation 100 of linear electric motors simultaneously.
At last, relatively, draw verification result.The user judges that according to the vibration data of feedback whether identical a kind of vibration calibrating data that reflected based on the vibration calibrating installation 100 of linear electric motors of the vibration-testing data self seen off by tested vibration monitoring instrument or sensor and the utility model or in the error range of the vibration vertification regulation of permission, the user can draw tested vibration monitoring instrument according to above-mentioned comparative result or sensor whether qualified.
Concrete; If the error range that the reflection that vibrational waveform and the vibration acceleration of user through 1 output of said user interactive module and tested vibration monitoring instrument or sensor record has surpassed the vertification regulation that vibrates calibrating installation based on the vibrational waveform and the error between the vibration acceleration of the vibration calibrating installation 100 of linear electric motors; Judge that then this tested vibration monitoring instrument or sensor are defective, and the calibration of needs or do over again.If the user judges tested vibration monitoring instrument or sensor in the error range that allows according to the vibration data of the mutual comparison of feedback, then tested vibration monitoring instrument or sensor are qualified.
A kind of vibration calibrating installation 100 of the utility model based on linear electric motors; Because of utilizing linear electric motors 4 and 9 pairs of vibration testing instruments of grating encoder or sensor to vibrate calibrating; And testing length roughly with on the grating chi 92 that linear electric motors secondary 41 equate can be provided with the light signal feedback point of more reflection position situation; So can get the pulse signal that more reflects the position situation, make a kind of vibration calibrating installation 100 of the utility model have high-precision position feedback ability based on linear electric motors; In addition; Because of 4 body structures of linear electric motors can guarantee in making the linear reciprocal movement process, to have longer stroke based on the vibration calibrating installation 100 of linear electric motors; So; A kind of vibration calibrating installation 100 based on linear electric motors of the utility model can be examined and determine the long vibration of stroke accordingly, and can guarantee to examine and determine under the certain situation of acceleration, a kind of vibration calibrating installation 100 based on linear electric motors carries out in lower frequency range.The calibrating frequency is minimum in preferred embodiment is low to moderate 0.005HZ.
In sum; A kind of vibration calibrating installation 100 based on linear electric motors of the utility model can be done the vibration calibrating to vibration testing instrument or sensor by the common cooperation of linear electric motors 4, laser cell 61 and grating chi 62; In addition; A kind of vibration calibrating installation 100 based on linear electric motors of the utility model not only can satisfy in low vibration frequency range and carries out, and the high precision that can guarantee to test and the test request of long stroke.
Above-described technical scheme is merely the preferred embodiment of a kind of vibration calibrating installation 100 based on linear electric motors of the utility model, and is any within the scope of the claim that the equivalent transformation of being done on vibration calibrating installation 100 bases of the utility model based on linear electric motors or replacement are included in this patent.
Claims (9)
1. measurement accuracy that the vibration calibrating installation based on linear electric motors is used to examine and determine vibration monitoring instrument or sensor is characterized in that:
Should comprise a user interactive module, a controller, a driver, a straight line motor, a support platform, two long stroke trapped orbits, two motion guide rails, a test carrying platform and a Laser feedback module based on the vibration calibrating installation of linear electric motors;
Said user interactive module be used for the user import corresponding user instruction and with this user instruction send said controller to and accept the output of said controller various data messages and with this plurality of data information interactionization convey to the user;
Said controller is used for user instruction that the process user interactive module sends into and according to user instruction Control Driver output corresponding driving signal, is used to control the laser cell projecting laser and is used to handle the position signalling of grating encoder input;
Said driver is used to accept drive signal that controller sends into and reciprocating along long stroke trapped orbit according to the drive linear electric motors;
Said linear electric motors comprise that further the linear electric motors that a straight line electric motor primary and is fixed on the support platform are secondary; Said long stroke fixed guide is fixed on the secondary both sides of linear electric motors abreast; Motion guide rail is erected at the top of long stroke fixed guide respectively; And the bottom of the top of motion guide rail and test carrying platform interfix so that test carrying platform can linear electric motors secondary above motion, the bottom of said test carrying platform and the elementary top of said linear electric motors are mutually permanently connected so that elementary drive of linear electric motors tested the to-and-fro movement that carrying platform is done linearity;
Said Laser feedback module further comprises a laser cell and a grating chi; Said grating chi is installed on the lateral surface of support platform, and said laser cell is suspended on the support platform outside and is used for projecting laser on the grating chi and detect the light signal of reflection position situation on the grating chi and feed back to controller;
During the vibration calibrating, said tested vibration monitoring instrument or sensor are fixed on the test carrying platform.
2. a kind of vibration calibrating installation based on linear electric motors according to claim 1 is characterized in that: laser cell is fixed on the outside of testing the suspender on the carrying platform and can being suspended on support platform through one.
3. a kind of vibration calibrating installation based on linear electric motors according to claim 1, it is characterized in that: the grating chi is over against laser cell.
4. a kind of vibration calibrating installation based on linear electric motors according to claim 1 is characterized in that: the equal in length that the length of said grating chi and linear electric motors are secondary.
5. a kind of vibration calibrating installation based on linear electric motors according to claim 1 is characterized in that: the grating chi is provided with a plurality of light signal feedback points that reflect the position situation.
6. a kind of vibration calibrating installation based on linear electric motors according to claim 1 is characterized in that: linear electric motors are secondary to be fixed on the support platform length direction straight.
7. a kind of vibration calibrating installation according to claim 1 based on linear electric motors; It is characterized in that: the input end of said controller interconnects with the output terminal of user interactive module and the output terminal of laser cell respectively, and the output terminal of controller is connected with the input end of laser cell and the input end of driver respectively.
8. a kind of vibration calibrating installation based on linear electric motors according to claim 1, it is characterized in that: the input end of output end of driver and linear electric motors interconnects.
9. a kind of vibration calibrating installation based on linear electric motors according to claim 1 is characterized in that: said laser cell is the laser head of a band feedback circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200362210U CN202471239U (en) | 2012-02-06 | 2012-02-06 | Vibration calibrating device based on linear motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200362210U CN202471239U (en) | 2012-02-06 | 2012-02-06 | Vibration calibrating device based on linear motor |
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| CN202471239U true CN202471239U (en) | 2012-10-03 |
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| CN2012200362210U Expired - Fee Related CN202471239U (en) | 2012-02-06 | 2012-02-06 | Vibration calibrating device based on linear motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538954A (en) * | 2012-02-06 | 2012-07-04 | 成都阜特科技有限公司 | Vibration verification device based on linear motor and vibration detecting method thereof |
| CN112763055A (en) * | 2020-12-29 | 2021-05-07 | 江柴发动机徐州有限公司 | Low-frequency vibration detection device of generator set and working method thereof |
-
2012
- 2012-02-06 CN CN2012200362210U patent/CN202471239U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538954A (en) * | 2012-02-06 | 2012-07-04 | 成都阜特科技有限公司 | Vibration verification device based on linear motor and vibration detecting method thereof |
| CN112763055A (en) * | 2020-12-29 | 2021-05-07 | 江柴发动机徐州有限公司 | Low-frequency vibration detection device of generator set and working method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHENGDU FORWARD TECHNOLOGY CORPORATION LIMITED Free format text: FORMER NAME: CHENGDU FORWARD TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 611743 Chengdu high tech West West Road, No. 199 die industrial park, building C1 Patentee after: Chengdu Fute Technology Co.,Ltd. Address before: 611743 Chengdu high tech West West Road, No. 199 die industrial park, building C1 Patentee before: Chengdu Forward Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20130206 |