CN103513060A - Method for converting PR9270 type vibration exciter into piezoelectric accelerometer calibrator - Google Patents
Method for converting PR9270 type vibration exciter into piezoelectric accelerometer calibrator Download PDFInfo
- Publication number
- CN103513060A CN103513060A CN201210217799.0A CN201210217799A CN103513060A CN 103513060 A CN103513060 A CN 103513060A CN 201210217799 A CN201210217799 A CN 201210217799A CN 103513060 A CN103513060 A CN 103513060A
- Authority
- CN
- China
- Prior art keywords
- piezoelectric accelerometer
- vibrator
- vibration
- calibrating device
- vibration exciter
- 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.)
- Pending
Links
Images
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
Provided is a method for converting a PR9270 type vibration exciter into a piezoelectric accelerometer calibrator. Through the method that two supporting bearings of the PR9270 type vibration exciter are reversely arranged, an adjusting vibrating spring is further arranged, and a set of vibrating table board (or a cantilever beam) is arranged at the top end of a shaft rod, and peripheral detection equipment, the vibration exciter is remanufactured into the piezoelectric accelerometer calibrator. Through the method, measurement precession can reach 4%, and convenience, practicality and economic performance are achieved. Meanwhile, the calibrator can be restored to the vibration exciter.
Description
Technical field
The present invention relates to calibration field, particularly a kind of PR9270 of repacking type vibrator is the method for piezoelectric accelerometer calibrating device.
Background technology
Vibrator is device ， China of a kind of excited vibration, use industrial and mining enterprises and the research unit of vibrator many, but the utilization factor of these devices is not high, and vacancy rate is also higher.
Summary of the invention
For appeal problem, the present invention utilizes PR9270 type vibrator, by its two support springs oppositely being installed, are installed the method adjusting vibrating spring and a set of vibration table (or semi-girder) is installed on axostylus axostyle top, in addition peripheral checkout equipment, vibrator is just changed system into piezoelectric accelerometer calibrating device.
The invention has the beneficial effects as follows: this method accuracy of measurement can reach 4%, and convenient, practical, economical.Meanwhile, this calibrating device also can revert to vibrator.
Accompanying drawing explanation
Fig. 1 is the installation diagram of shaking platform and support spring; Fig. 2 is acceleration calibrating device fundamental diagram.
Wherein, 1. support spring; 2. shaking platform; 3. fixing fixture block; 4. measure light slit; 5. vibrating spring; 6. PR9270 type vibrator; 7. acceleration amplifies indicator; 8.8305 standard accelerometer; 9. M5535 power amplifier;
10. oscillograph; 11. 1022 beat frequency oscillator (BFO)s; 12. counterweights; 13. semi-girders; 14. by school accelerometer; 15. 2626 modification amplifiers.
Embodiment
1. whole device has three parts: shaking platform (2), semi-girder (13) are installed, are adjusted vibrating spring (5) and assembling support spring (1), and prepare corresponding amplitude measuring apparatus.
1.1 vibration tables: in order to alleviate the quality of moving part, useful hard aluminium alloy is made vibration table (2), with three screws it be fixed on the push rod of vibrator, by school accelerometer (14), measure light slit (4) and standard accelerometer is fixed on table top; In order to obtain larger acceleration, can make a rectangular cantilever beam (13) and be fixed on vibration table, when semi-girder (13) resonates, can produce larger acceleration.
1.2 whole vibrating springs (5) and assembling support spring (1), PR9270 type vibrator has two groups of vibrating springs, and the precompression of every group is 45N.When two groups of springs are installed in the same way, total precompression is 90N.So just moving part has been shifted onto to the top of limit frequency modulator.Can open the vibrating spring at the top cover ，Jiang top of vibrator for this reason and oppositely install, just can make the precompression vanishing of moving part; But due to the effect of moving part gravity, moving part still sinks to the bottom of limit frequency modulator.So also should process the tip position that a support spring is arranged on the movable system of vibrator.Moving part is supported, balance remaining gravity, make moving part just be in centre the energy free vibration of two limit frequency modulators.
1.3 amplitude measuring apparatus: the amplitude of vibration table and semi-girder can be measured with reading microscope, its accuracy of measurement can reach 0.001mm.For reading microscope being placed on to suitable position, measure, preferably make a mirror holder, can regulate microscopical observation position and observed range in top to bottom, left and right, front and rear.The sign of observation is the measurement light slit being fixed on shaking platform (2).This measure light slit (4) by very little two sheet metals of the deformation through precise finiss to by forming.Light slit width can reach 0.01mm.
2. 1 principle of work: principle is as shown in Fig. 2.The piezoelectric accelerometer calibrating device of a whole set of vibrator repacking has four parts: standard signal generator, audio-frequency power amplifier, PR9270 type vibrator (6) and amplitude measuring apparatus.By standard signal generator, produced the sinusoidal signal of desired low distortion, after putting, audio-frequency power amplifier confession is input to the drive coil of vibrator, thereby produce the mechanical vibration of corresponding frequencies, the amplitude of shaking platform (2) or semi-girder (13) is measured with T C I type reading microscope, in vibration processes, after measuring the focused light source irradiation at light slit (4) the Bei Qi back side, light belt that has certain width of light slit generate, the width that mensuration light belt width deducts light slit itself is exactly double-amplitude (Feng Yifeng) value of vibration.For high value acceleration situation, can not use light slit to measure amplitude, can adopt standard accelerometer (8).Can be by it be back-to-back arranged on shaking platform (2) or semi-girder (13) by school piezoelectric accelerometer upper, directly carry out contrast test more convenient.
By school accelerometer (14), be arranged at the center of vibration table; When being arranged on Yi Cehuo one end of shaking platform (2) or semi-girder (13) by school accelerometer (14), the counterweight (12) identical in quality with accelerometer should be installed in the symmetric position of its offside or opposite end, so that vibrational system keeps balance.Transverse-vibration momentum for measuring vibrations platform (2) (or semi-girder (13)), also can stick in the vertical side of shaking table (2) (or semi-girder (13)) sand paper of 30 0 ~ 400#, with reading microscope, seek the sand point of surveying a certain light, measure this sand point and show the major axis of elliptical orbit and the length of minor axis, deduct respectively the diameter of this luminous point, just can obtain the amplitude of the vertical and horizontal of vibration table (or semi-girder) vibration.
If 2.2 need to transform calibrating device into vibrator again time, as long as take off shaking platform (2) and support spring (1), the direction of transposing vibrating spring (5), restores to the original state very soon, and instrument itself is had no effect.
3. error analysis: the acceleration of vibration table sinusoidal vibration is by a=4 π
2f
2a.
Wherein, f is vibration frequency; A is single amplitude of vibration.
According to the technical indicator of theory of errors and calibrating device, the relative error of trying to achieve institute's measuring acceleration is≤4%.
Claims (2)
1. repacking PR9270 type vibrator is the method for piezoelectric accelerometer calibrating device, it is characterized in that: by two support springs of PR9270 type vibrator oppositely being installed, installed the method adjusting vibrating spring and a set of vibration table (or semi-girder) is installed on axostylus axostyle top, in addition peripheral checkout equipment, vibrator is just changed system into piezoelectric accelerometer calibrating device.
2. repacking PR9270 type vibrator according to claim 1 is the method for piezoelectric accelerometer calibrating device, it is characterized in that: repacking PR9270 type vibrator is that the principle of piezoelectric accelerometer calibrating device is: the sinusoidal signal that is produced desired low distortion by standard signal generator, after putting, audio-frequency power amplifier confession is input to the drive coil of vibrator, thereby produce the mechanical vibration of corresponding frequencies, the amplitude of shaking platform (2) or semi-girder (13) is measured with T C I type reading microscope, in vibration processes, after measuring the focused light source irradiation at light slit (4) the Bei Qi back side, light belt that has certain width of light slit generate, the width that mensuration light belt width deducts light slit itself is exactly double-amplitude (Feng Yifeng) value of vibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210217799.0A CN103513060A (en) | 2012-06-28 | 2012-06-28 | Method for converting PR9270 type vibration exciter into piezoelectric accelerometer calibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210217799.0A CN103513060A (en) | 2012-06-28 | 2012-06-28 | Method for converting PR9270 type vibration exciter into piezoelectric accelerometer calibrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103513060A true CN103513060A (en) | 2014-01-15 |
Family
ID=49896106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210217799.0A Pending CN103513060A (en) | 2012-06-28 | 2012-06-28 | Method for converting PR9270 type vibration exciter into piezoelectric accelerometer calibrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103513060A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771366A (en) * | 2016-12-29 | 2017-05-31 | 中国工程物理研究院电子工程研究所 | A kind of mems accelerometer health status monitoring device and monitoring method |
| CN106771364A (en) * | 2016-12-15 | 2017-05-31 | 中国航空工业集团公司西安飞机设计研究所 | A kind of piezoelectric accelerometer examines and determine installs fixture |
| CN109060119A (en) * | 2018-10-24 | 2018-12-21 | 上海海事大学 | A kind of multichannel vibrating sensor and strain transducer calibrating installation |
| CN111089987A (en) * | 2019-12-26 | 2020-05-01 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Portable field multi-frequency vibration acceleration correction system and method |
-
2012
- 2012-06-28 CN CN201210217799.0A patent/CN103513060A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771364A (en) * | 2016-12-15 | 2017-05-31 | 中国航空工业集团公司西安飞机设计研究所 | A kind of piezoelectric accelerometer examines and determine installs fixture |
| CN106771366A (en) * | 2016-12-29 | 2017-05-31 | 中国工程物理研究院电子工程研究所 | A kind of mems accelerometer health status monitoring device and monitoring method |
| CN109060119A (en) * | 2018-10-24 | 2018-12-21 | 上海海事大学 | A kind of multichannel vibrating sensor and strain transducer calibrating installation |
| CN111089987A (en) * | 2019-12-26 | 2020-05-01 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Portable field multi-frequency vibration acceleration correction system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102072806B (en) | Device for testing dynamic characteristic parameters of fixed joint surface and testing method thereof | |
| CN102183440B (en) | Vibrating type viscometer | |
| CN103513060A (en) | Method for converting PR9270 type vibration exciter into piezoelectric accelerometer calibrator | |
| CN101979982B (en) | Ultra-low frequency displacement vibration and bending complex strain comprehensive test device | |
| CN116699177A (en) | Accelerometer performance testing device, method and system | |
| CN105136418A (en) | Vibration characteristic testing and analyzing device of micro-interference moment simulation system | |
| CN202854170U (en) | PR9270 vibration exciter converted piezoelectric accelerometer calibrator | |
| CN203069622U (en) | Calibration device for acceleration sensor | |
| CN111766198B (en) | Material dynamic friction force test method and device based on folding pendulum | |
| CN202049644U (en) | Forced vibration demonstration device | |
| CN104977218A (en) | Device and method for detecting rigidity of micro elastic parts | |
| CN102620751B (en) | Resonance excitation method of micro-cantilever sensor | |
| Garg et al. | Applications of Laser Interferometry in providing traceable vibration measurements in India | |
| Bernhard | Mechanical Vibrations-Theory and Application-An Introduction to Practical Dynamic Engineering Problems in the Structural Field | |
| CN201122140Y (en) | Yang elasticity modulus measurer | |
| CN106990260B (en) | A kind of tachymeter and measurement method using vortex-induced vibration | |
| CN202372252U (en) | Accelerometer checking system-based dynamic checking device of eddy current sensor | |
| CN201638423U (en) | Real-time single pendulum oscillation demonstrating instrument | |
| CN209895619U (en) | Intelligent Young modulus experimental instrument based on capacitive grating sensor | |
| Liang et al. | An undergraduate experiment of wave motion using a coupled-pendulum chain | |
| CN106908096A (en) | Ultralow frequency simple harmonic oscillation displacement and stretch bending composite strain comprehensive test device | |
| Batista et al. | Flexural vibrations of a thin clamped steel bar | |
| CN107272084B (en) | A method of the even value gravity gradient tensor excitation of creation Local approximation | |
| Dong | Current research and development of dynamic force calibration devices at home and abroad | |
| CN106053265A (en) | Experiment device and method for measuring Young modulus of metal wire according to resonance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140115 |