CN108168453A - The fibre strain calibrating installation and its calibration method of magnetic actuation - Google Patents
The fibre strain calibrating installation and its calibration method of magnetic actuation Download PDFInfo
- Publication number
- CN108168453A CN108168453A CN201711272265.7A CN201711272265A CN108168453A CN 108168453 A CN108168453 A CN 108168453A CN 201711272265 A CN201711272265 A CN 201711272265A CN 108168453 A CN108168453 A CN 108168453A
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- China
- Prior art keywords
- electromagnet
- displacement sensor
- strain
- uniform strength
- compound beam
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
Abstract
The invention discloses a kind of fibre strain calibrating installation of magnetic actuation, including mounting seat, the compound beam of uniform strength, metal derby, electromagnet, contactless displacement sensor, computer；The bottom of the compound beam of uniform strength is fixedly connected with mounting seat；The end of the compound beam of uniform strength is equipped with metal derby；Electromagnet and displacement sensor are respectively installed in metal derby upper and lower；Computer receives the measuring signal of displacement sensor, and measuring signal is as the suction size fed back for controlling electromagnet.The invention also discloses a kind of fibre strain calibration methods of magnetic actuation.The present invention is used to generate standard dynamic strain signal, it can be achieved that the calibration process of dynamic strain measurement device.
Description
Technical field
The present invention relates to a kind of measurement instruments, specifically, are related to fibre strain calibrating installation and its school of a kind of magnetic actuation
Quasi- method.
Background technology
Optical fiber/optical grating dynamic strain measurement technology is mainly used for strain measurement work under complex environment because of its jamproof characteristic
Make, be used to ensure accuracy and the reliability of measuring system for its Dynamic Calibration Technique.
Strain collimation technique is mainly realized by the strain prover of different principle.Prover is strained to can be used for by electrostrictive strain
Resistance or fiber Bragg grating strain sensor form the calibration of strain measurement system.But due to the difference of its principle, low frequency moves
The calibration of state signal is currently limited to static girder construction and generates the calibration that static standard strain signal is realized；High frequency dynamic strain
The calibrating installation of signal is only capable of by realizing step calibration to sensor and deformeter (or fiber Bragg grating (FBG) demodulator).
The deficiency of more than calibration system：
1st, static girder construction can generate standard strain signal, but due to its architectural characteristic, be only capable of generating static tension and compression
Signal can not generate the controllable standard dynamic strain signal of amplitude of higher frequency.
2nd, the standard that static girder construction the generates switching adjusting apparatus process that should change direction is slow, can not be switched fast direction.
3rd, dynamic resistance strain instrument can realize the dynamic calibration of resistance strain sensor, but because it is electric signal
Calibration process, does not generate the dynamic strain signal of standard, therefore is not suitable for fiber Bragg grating strain sensor and forms strain measurement
System.
4th, the standard dynamic strain signal of high frequency can not be generated for the calibration of high frequency dynamic strain signal, be accomplished that point
Step calibration, systematic survey uncertainty are only capable of obtaining by composite calulation, can not be by directly calibrating acquisition.
Invention content
Technical problem solved by the invention is to provide the fibre strain calibrating installation and its calibration method of a kind of magnetic actuation,
For generating standard dynamic strain signal, it can be achieved that the calibration process of dynamic strain measurement device.
The present invention completes by the following technical programs：
A kind of fibre strain calibrating installation of magnetic actuation, including mounting seat, the compound beam of uniform strength, metal derby, electromagnet,
Contactless displacement sensor, computer；The bottom of the compound beam of uniform strength is fixedly connected with mounting seat；The compound beam of uniform strength
End metal derby is installed；Electromagnet and displacement sensor are respectively installed in metal derby upper and lower；Computer receives displacement and passes
The measuring signal of sensor, measuring signal is as the suction size fed back for controlling electromagnet.
Further：Displacement sensor selects laser displacement sensor.
Further：Metal derby is vertically disposed at least two sets of electromagnet and laser displacement sensor, and opposite installation.
A kind of fibre strain calibration method of magnetic actuation, including：
It is measured according to the variation range for the standard strain signal to be generated and change frequency and laser displacement sensor
Displacement data calculates the size of the driving voltage of electromagnet；
After the completion of calculating, electromagnet is controlled to generate bias voltage by computer, adjust the compound beam of uniform strength to zero-bit；
It is calculated by the feedback signal of laser displacement sensor, two sets of electromagnet discontinuity of control generate reversely
Magnetic attraction attracts metal derby that the compound beam of uniform strength is driven to be vibrated, generates lasting dynamic strain；
The fibre optic strain sensor being pasted onto on the compound beam of uniform strength carries out dynamic calibration according to dynamic strain.
Compared with prior art, the technology of the present invention effect includes：
1st, driver is used as by electromagnet, driving force, frequency are adjustable, due to being accomplished that noncontact driving, driving frequency
Rate is higher, activation configuration will not equivalent intensities vibration of beam impact.
2nd, it is measured by laser displacement sensor and closed loop adjusting is carried out, it can be achieved that dynamic strain measurement device to amplitude
Calibration process.
3rd, the present invention can be used for the production of the dynamic calibration apparatus of dynamic strain measuring equipment, research, can generate preferably
Economic benefit.
Description of the drawings
Fig. 1 is the structure diagram of the fibre strain calibrating installation of magnetic actuation in the present invention.
Specific embodiment
It elaborates below with reference to example embodiment to technical solution of the present invention.However, example embodiment can
Implement in a variety of forms, and be not understood as limited to embodiment set forth herein；On the contrary, it theses embodiments are provided so that
The design of example embodiment more comprehensively and completely, and is comprehensively communicated to those skilled in the art by the present invention.
As shown in Figure 1, it is the structure diagram of the fibre strain calibrating installation of magnetic actuation in the present invention.
The fibre strain calibrating installation of magnetic actuation is mounted in the beam of uniform strength structure of dynamic strain measurement device, structure
Including：Mounting seat 1, the compound beam of uniform strength 2, metal derby 3, electromagnet 4, laser displacement sensor 5, computer 6；Compound grade is strong
Degree beam 2 and mounting seat 1 are arranged in beam of uniform strength structure, and the bottom of the compound beam of uniform strength 2 is fixedly connected with mounting seat 1；
The tip of the compound beam of uniform strength 2 is equipped with metal derby 3；Electromagnet 4 and laser displacement sensing are respectively installed in 3 upper and lower of metal derby
Device 5；Computer 6 receives the measuring signal of laser displacement sensor 5, and measuring signal controls the suction of electromagnet 4 as feedback
Size.
Laser displacement sensor 5 can be replaced by other contactless displacement sensors.In metal derby at least two about 3
Cover electromagnet 4 and laser displacement sensor 5, and opposite installation.
The fibre strain calibration method of magnetic actuation, specifically includes following steps：
Step 1：According to the variation range for the standard strain signal to be generated and change frequency and laser displacement sensor 5
The displacement data measured calculates the driving voltage size of electromagnet 4；
Step 2：After the completion of calculating, electromagnet 4 is controlled to generate bias voltage by computer 6, adjust the compound beam of uniform strength 2
To zero-bit；
Step 3：The signal fed back by laser displacement sensor 5 is calculated, and controls the production of two sets of 4 discontinuity of electromagnet
Raw reversed magnetic attraction, attracts metal derby 3 that the compound beam of uniform strength 2 is driven to be vibrated, generates lasting dynamic strain；
Step 4：The fibre optic strain sensor being pasted onto on the compound beam of uniform strength 2 carries out dynamic calibration according to dynamic strain.
The dynamic strain accuracy of generation is higher, available for the fibre optic strain sensor being pasted onto on the compound beam of uniform strength 2
Dynamic calibration.
Term used herein is explanation and term exemplary, and not restrictive.Since the present invention can be with a variety of
Form be embodied without departing from invention spirit or essence, it should therefore be appreciated that above-described embodiment be not limited to it is any aforementioned
Details, and should widely being explained in the spirit and scope that appended claims are limited, thus fall into claim or its etc.
Whole variations and remodeling in the range of effect all should be appended claims and covered.
Claims (4)
1. a kind of fibre strain calibrating installation of magnetic actuation, it is characterised in that：Including mounting seat, the compound beam of uniform strength, metal
Block, electromagnet, contactless displacement sensor, computer；The bottom of the compound beam of uniform strength is fixedly connected with mounting seat；It is multiple
The end for closing the beam of uniform strength is equipped with metal derby；Electromagnet and displacement sensor are respectively installed in metal derby upper and lower；Computer
The measuring signal of displacement sensor is received, measuring signal is as the suction size fed back for controlling electromagnet.
2. the fibre strain calibrating installation of magnetic actuation as described in claim 1, it is characterised in that：Displacement sensor selects laser position
Displacement sensor.
3. the fibre strain calibrating installation of magnetic actuation as described in claim 1, it is characterised in that：Metal derby is vertically disposed at least
There are two sets of electromagnet and laser displacement sensor, and opposite installation.
4. a kind of fibre strain calibration method of magnetic actuation, including：
The displacement measured according to the variation range for the standard strain signal to be generated and change frequency and laser displacement sensor
Data calculate the size of the driving voltage of electromagnet；
After the completion of calculating, electromagnet is controlled to generate bias voltage by computer, adjust the compound beam of uniform strength to zero-bit；
It is calculated by the feedback signal of laser displacement sensor, the magnetic for controlling the generation of two sets of electromagnet discontinuity reversed
Power attracts metal derby that the compound beam of uniform strength is driven to be vibrated, generates lasting dynamic strain；
The fibre optic strain sensor being pasted onto on the compound beam of uniform strength carries out dynamic calibration according to dynamic strain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711272265.7A CN108168453A (en) | 2017-12-06 | 2017-12-06 | The fibre strain calibrating installation and its calibration method of magnetic actuation |
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| CN201711272265.7A CN108168453A (en) | 2017-12-06 | 2017-12-06 | The fibre strain calibrating installation and its calibration method of magnetic actuation |
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| CN108168453A true CN108168453A (en) | 2018-06-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849314A (en) * | 2018-12-26 | 2020-02-28 | 中国航空工业集团公司北京长城计量测试技术研究所 | Dynamic strain calibration method with continuously adjustable frequency |
| CN110849312A (en) * | 2018-12-26 | 2020-02-28 | 中国航空工业集团公司北京长城计量测试技术研究所 | Resonance type dynamic strain calibration device and method |
| CN112880629A (en) * | 2021-01-14 | 2021-06-01 | 中国计量科学研究院 | Strain sensor calibration device and calibration method |
| CN113670567A (en) * | 2021-08-24 | 2021-11-19 | 哈尔滨工业大学（深圳） | High dynamic response force measuring balance for measuring wall surface friction resistance and calibration method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849314A (en) * | 2018-12-26 | 2020-02-28 | 中国航空工业集团公司北京长城计量测试技术研究所 | Dynamic strain calibration method with continuously adjustable frequency |
| CN110849312A (en) * | 2018-12-26 | 2020-02-28 | 中国航空工业集团公司北京长城计量测试技术研究所 | Resonance type dynamic strain calibration device and method |
| CN110849312B (en) * | 2018-12-26 | 2021-04-06 | 中国航空工业集团公司北京长城计量测试技术研究所 | Resonance type dynamic strain calibration device and method |
| CN110849314B (en) * | 2018-12-26 | 2021-06-22 | 中国航空工业集团公司北京长城计量测试技术研究所 | Dynamic strain calibration method with continuously adjustable frequency |
| CN112880629A (en) * | 2021-01-14 | 2021-06-01 | 中国计量科学研究院 | Strain sensor calibration device and calibration method |
| CN113670567A (en) * | 2021-08-24 | 2021-11-19 | 哈尔滨工业大学（深圳） | High dynamic response force measuring balance for measuring wall surface friction resistance and calibration method thereof |
| CN113670567B (en) * | 2021-08-24 | 2024-04-09 | 哈尔滨工业大学（深圳） | High dynamic response force measuring balance for measuring wall friction resistance and calibration method thereof |
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Application publication date: 20180615 |