CN103712634B - The measuring method of optical fibre gyro vibration-magnetic field degree of cross-linking - Google Patents
The measuring method of optical fibre gyro vibration-magnetic field degree of cross-linking Download PDFInfo
- Publication number
- CN103712634B CN103712634B CN201310721542.3A CN201310721542A CN103712634B CN 103712634 B CN103712634 B CN 103712634B CN 201310721542 A CN201310721542 A CN 201310721542A CN 103712634 B CN103712634 B CN 103712634B
- Authority
- CN
- China
- Prior art keywords
- magnetic field
- optical fibre
- fibre gyro
- vibration
- under
- 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.)
- Expired - Fee Related
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 101
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000004132 cross linking Methods 0.000 title claims abstract description 17
- 230000035945 sensitivity Effects 0.000 claims abstract description 16
- 230000005426 magnetic field effect Effects 0.000 claims abstract description 5
- 230000001133 acceleration Effects 0.000 claims description 32
- 230000005484 gravity Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 abstract description 5
- 238000011160 research Methods 0.000 abstract description 4
- 238000012956 testing procedure Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006880 cross-coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
- G01C25/005—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass initial alignment, calibration or starting-up of inertial devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
- G01C19/58—Turn-sensitive devices without moving masses
- G01C19/64—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Gyroscopes (AREA)
Abstract
The invention discloses the measuring method of a kind of optical fibre gyro vibration-magnetic field degree of cross-linking.The main testing procedure of measuring method disclosed by the invention is positioned on shaking platform by optical fibre gyro, and apply magnetic field, measure the output of optical fibre gyro under radial magnetic field effect respectively, and the output of optical fibre gyro under the cross action of vibration-magnetic field, obtain the zero inclined of zero optical fibre gyro partially and under the cross action of vibration-magnetic field of optical fibre gyro under radial magnetic field effect, thus calculate optical fibre gyroscope magnetic field sensitivity, vibration-magnetic field degree of cross-linking, evaluate the bias instaility of optical fibre gyro under the cross action of vibration-magnetic field, for the vibration-magnetic field environment adaptability improving optical fibre gyro further provides Research foundation.The present invention can be used for measuring fiber gyro magnetic field sensitivity and magnetic field sensitivity under vibrating conditions; Can be used for the output characteristics of measuring optical fiber gyro under the cross action of vibration-magnetic field, evaluate the optical fibre gyro bias instaility under the cross action of vibration-magnetic field.
Description
Technical field
The present invention relates to a kind of optical fibre gyro Zhen Dong ?the measuring method of magnetic field degree of cross-linking.
Background technology
Optical fibre gyro is a kind of Optical rotation sensor based on Sagnac effect.Vibration and magnetic field are two key factors affecting optical fibre gyroscope output accuracy.In optical fibre gyro, fiber optic loop, should be insensitive to linear acceleration as important angular velocity sensitive element.But in actual applications, when being subject to the vibration effect from the external world, because of by himself structure, restriction around ring technique and packaging technology, may deformation be there is and the change causing fiber stress to distribute in the physical dimension of fiber optic loop, and then cause producing a nonreciprocal phase shift in optical fibre gyro, cause the phase error of optical fibre gyro, therefore have impact on the precision that gyro exports.Due to magneto-optic effect, optical fibre gyro produces the accessional nonreciprocal phase error relevant with magnetic field, and this phase differential changes along with the change in external magnetic field size and direction, reduces the bias instaility of optical fibre gyro, directly affects the precision of gyro.
At present research optical fibre gyro Zhen Dong ?in the degree of cross-linking of magnetic field, there is no special method of testing and equipment, bring great inconvenience to experiment and research.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of optical fibre gyro Zhen Dong ?the measuring method of magnetic field degree of cross-linking.
Optical fibre gyro Zhen Dong ?the measuring method of magnetic field degree of cross-linking, by measuring optical fiber gyro respectively in a static condition, under radial magnetic field effect, under effect of vibration and Zhen Dong ?output under the cross action of magnetic field, obtain Zhen Dong ?under the cross action of magnetic field optical fibre gyro Zhen Dong ?magnetic field degree of cross-linking, evaluate Zhen Dong ?the bias instaility of optical fibre gyro under the cross action of magnetic field.
Optical fibre gyro Zhen Dong ?the measuring method of magnetic field degree of cross-linking, comprise the following steps:
1) sensitive axes of optical fibre gyro is perpendicular to vibration table, be fixed on shaking table, optical fibre gyro is positioned at the central authorities of Helmholtz coil, the radial magnetic field orientation that Helmholtz coil produces is perpendicular to the sensitive axes of optical fibre gyro, Hall element is fixed on shaking table, and the sensitive direction of Hall element is parallel with the radial magnetic field orientation that Helmholtz coil produces;
2) shaking table described in is static, does not apply radial magnetic field, the output of measuring optical fiber gyro, obtains the zero inclined A of optical fibre gyro
0;
3) apply radial magnetic field, measure radial magnetic field B by Hall element, the output of measuring optical fiber gyro, obtains the zero inclined A of optical fibre gyro
0';
4) magnetic field sensitivity of optical fibre gyro is calculated
5) radial magnetic field B is removed;
6) control shaking table frequency be 10Hz ?2KHz, vibration peak acceleration is vibrate under the condition of an acceleration of gravity (g), the output of measuring optical fiber gyro, until vibration stops, obtaining the zero inclined A vibrating the optical fibre gyro of peak acceleration when being an acceleration of gravity
1;
7) apply radial magnetic field B, repeat the operation of step 6), obtain vibrating peak acceleration the zero inclined A of optical fibre gyro when being an acceleration of gravity
1';
8) radial magnetic field B is removed;
9) calculate vibration frequency be 10Hz ?2KHz, vibration peak acceleration is the magnetic field sensitivity of the optical fibre gyro under an acceleration of gravity condition
10) control the frequency of shaking table be 10Hz ?2KHz, vibration peak acceleration is respectively 2g, 3g, 4g, 5g, 6g, 7g, 8g, 9g, 10g, repeat step 5) to step 9), obtain respectively vibration frequency be 10Hz ?2KHz, vibration peak acceleration is respectively the magnetic field sensitivity S of optical fibre gyro under 2g, 3g, 4g, 5g, 6g, 7g, 8g, 9g, 10g condition
2, S
3, S
4, S
5, S
6, S
7, S
8, S
9, S
10;
11) by the S in step 4)
0with the S in step 9), step 10)
i(i=1,, 10) substitute into respectively
obtain respectively vibration frequency be 10Hz ?2KHz, vibration peak acceleration be respectively 1g, 2g, 3g, 4g, 5g, 6g, 7g, 8g, 9g, 10g, radial magnetic field intensity size be optical fibre gyro under B condition Zhen Dong ?magnetic Field Coupling degree K
1, K
2, K
3, K
4, K
5, K
6, K
7, K
8, K
9, K
10.
Described radial magnetic field B is produced by Helmholtz coil, and Helmholtz coil is by driven with current sources.
Described Hall element is positioned at Helmholtz coil central position.
Described measuring process, the time should be greater than 1 minute, to reduce the stochastic error in measuring process.
Zero of described optical fibre gyro is the mean value of output data in each Measuring Time of optical fibre gyro partially.
The beneficial effect that the present invention compared with prior art has:
1) measuring fiber gyro magnetic field sensitivity and magnetic field sensitivity under vibrating conditions can be used for;
2) can be used for measuring optical fiber gyro Zhen Dong ?output characteristics under the cross action of magnetic field, evaluate Zhen Dong ?optical fibre gyro bias instaility under the cross action of magnetic field.
Accompanying drawing explanation
Fig. 1 be optical fibre gyro Zhen Dong ?magnetic field degree of cross-linking measuring method principle schematic top plan view;
Fig. 2 be optical fibre gyro Zhen Dong ?magnetic field degree of cross-linking measuring method principle schematic front view;
In figure: Helmholtz coil 1, shaking table 2, frock and optical fibre gyro 3, Hall element 4.
Embodiment
The invention provides a kind of optical fibre gyro Zhen Dong ?the measuring method of magnetic field degree of cross-linking, can test easily Zhen Dong ?the impact that optical fibre gyro is exported of magnetic field cross action, thus accelerate optical fibre gyro Zhen Dong ?the research of magnetic field performance and evaluation and test, for study later optical fibre gyro Zhen Dong ?magnetic field cross-couplings effect, improve optical fibre gyro Zhen Dong ?magnetic field environment adaptability, established good solid foundation.
Below in conjunction with accompanying drawing, the present invention is further illustrated.
As shown in accompanying drawing 1,2, shaking table horizontal positioned, is fixed on shaking table by frock by optical fibre gyro, and optical fibre gyro sensitive axes perpendicular to vibration table upwards.Whole test macro is in the radial uniform magnetic field produced by Helmholtz coil.Shaking table exports with frequency sweep form, and frequency change is from 10Hz to 20KHz, and vibration peak acceleration is successively from 1g(acceleration of gravity) be increased to 10g.Therefore, this method of testing can distinguish measuring optical fiber gyro radial uniform magnetic field and Zhen Dong ?output under the cross action of magnetic field, data are recorded by computer acquisition, obtain zero of optical fibre gyro in all cases partially, thus the magnetic field sensitivity calculated under optical fibre gyroscope magnetic field sensitivity, vibration condition and Zhen Dong ?magnetic field degree of cross-linking.
Optical fibre gyro Zhen Dong ?the measuring method of magnetic field degree of cross-linking comprise the following steps:
1) optical fibre gyro sensitive axes is perpendicular to vibration table, is fixed on a vibration table by optical fibre gyro, the central authorities being positioned at Helmholtz coil of optical fibre gyro by frock.After adding current source, Helmholtz coil produce uniform magnetic field, magnetic direction along the radial direction of optical fibre gyro, namely perpendicular to optical fibre gyro sensitive axes.Hall element is fixing on a vibration table by frock, and the sensitive direction of Hall element is parallel with the radial magnetic field orientation that Helmholtz coil produces;
2) shaking table is static, do not apply radial magnetic field, the output of measuring optical fiber gyro is greater than 1 minute (if be less than 1 minute can introduce larger stochastic error, but overlong time can affect measures efficiency), record data by computer acquisition, obtain the zero inclined A of optical fibre gyro
0;
3) open to the current source of Helmholtz coil power supply, apply radial magnetic field, measured the size B of radial magnetic field intensity by Hall element, the output of measuring optical fiber gyro is greater than 1 minute, record data by computer acquisition, obtain zero inclined A of optical fibre gyro under radial uniform magnetic field effect
0';
4) magnetic field sensitivity of optical fibre gyro is calculated
5) close to the current source of Helmholtz coil power supply, remove radial magnetic field B;
6) be 10Hz ?2KHz by computer controlled shaking table processed in frequency, vibration peak acceleration is vibrate under the condition of 1g, time of vibration is set greater than 1 minute, the output of measuring optical fiber gyro, record data by computer acquisition simultaneously, until vibration stops, obtaining the zero inclined A vibrating peak acceleration optical fibre gyro when being 1g
1;
7) open to the current source of Helmholtz coil power supply, apply the radial magnetic field B with formed objects in step 3), repeat the operation of step 6), obtaining radial magnetic field intensity is B, the zero inclined A of optical fibre gyro when vibration peak acceleration is 1g
1';
8) close to the current source of Helmholtz coil power supply, remove radial magnetic field B;
9) calculate vibration frequency be 10Hz ?2KHz, vibration peak acceleration is the magnetic field sensitivity of the optical fibre gyro under the condition of 1g
10) be 10Hz ?2KHz by the frequency of computer controlled shaking table processed, vibration peak acceleration is respectively 2g, 3g, 4g, 5g, 6g, 7g, 8g, 9g, 10g, repeat step 5) to step 9), measuring vibrations frequency be 10Hz ?2KHz, vibration peak acceleration is respectively the output of optical fibre gyro under 2g, 3g, 4g, 5g, 6g, 7g, 8g, 9g, 10g condition, record data by computer acquisition, obtain zero of optical fibre gyro partially, bring formula into
(i=2 ..., 10), calculate the magnetic field sensitivity S of optical fibre gyro under different vibration condition
2, S
3, S
4, S
5, S
6, S
7, S
8, S
9, S
10;
11) by the S in step 4)
0with the S in step 9), step 10)
i(i=1 ..., 10) bring into respectively
obtain vibration frequency be 10Hz ?2KHz, vibration peak acceleration be respectively 1g, 2g, 3g, 4g, 5g, 6g, 7g, 8g, 9g, 10g, radial magnetic field intensity size be optical fibre gyro under B condition Zhen Dong ?magnetic Field Coupling degree K
1, K
2, K
3, K
4, K
5, K
6, K
7, K
8, K
9, K
10.
12) experimental result finally obtained is K
1, K
2, K
3, K
4, K
5, K
6, K
7, K
8, K
9, K
10respectively: 0.45%, 0.98%, 1.56%, 2.03%, 2.61%, 3.06%, 3.48%, 3.97%, 4.41%, 4.96%.
Radial magnetic field B is produced by Helmholtz coil, and Helmholtz coil is by driven with current sources, and optical fibre gyro is positioned at Helmholtz coil central position, and when namely ensureing to open to the current source of Helmholtz coil power supply, gyro is in even strong radial magnetic field B.
Hall element is positioned at Helmholtz coil central position, and is fixed on shaking table by frock, and Hall element sensitive direction is parallel with magnetic direction.
The measurement of data and acquisition time should be greater than 1 minute, to reduce the stochastic error in measuring process.
Zero of optical fibre gyro is the mean value of output data in each Measuring Time of optical fibre gyro partially.
Claims (5)
1. an optical fibre gyro shakes the measuring method of ?magnetic field degree of cross-linking, it is characterized in that, by measuring optical fiber gyro respectively in a static condition, under radial magnetic field effect, under effect of vibration and Zhen Dong ?output under the cross action of magnetic field, obtain Zhen Dong ?under the cross action of magnetic field optical fibre gyro Zhen Dong ?magnetic field degree of cross-linking, evaluate Zhen Dong ?the bias instaility of optical fibre gyro under the cross action of magnetic field;
Comprise the following steps:
1) sensitive axes of optical fibre gyro is perpendicular to vibration table, be fixed on shaking table, optical fibre gyro is positioned at the central authorities of Helmholtz coil, the radial magnetic field orientation that Helmholtz coil produces is perpendicular to the sensitive axes of optical fibre gyro, Hall element is fixed on shaking table, and the sensitive direction of Hall element is parallel with the radial magnetic field orientation that Helmholtz coil produces;
2) shaking table described in is static, does not apply radial magnetic field, the output of measuring optical fiber gyro, obtains the zero inclined A of optical fibre gyro
0;
3) apply radial magnetic field, measure radial magnetic field B by Hall element, the output of measuring optical fiber gyro, obtains the zero inclined A ' of optical fibre gyro
0;
4) magnetic field sensitivity of optical fibre gyro is calculated
5) radial magnetic field B is removed;
6) control shaking table frequency be 10Hz ?2KHz, vibration peak acceleration is vibrate under the condition of an acceleration of gravity (g), the output of measuring optical fiber gyro, until vibration stops, obtaining the zero inclined A vibrating the optical fibre gyro of peak acceleration when being an acceleration of gravity
1;
7) apply radial magnetic field B, repeat step 6) operation, obtain vibrating peak acceleration the zero inclined A ' of optical fibre gyro when being an acceleration of gravity
1;
8) radial magnetic field B is removed;
9) calculate vibration frequency be 10Hz ?2KHz, vibration peak acceleration is the magnetic field sensitivity of the optical fibre gyro under an acceleration of gravity condition
10) control the frequency of shaking table be 10Hz ?2KHz, vibration peak acceleration is respectively 2g, 3g, 4g, 5g, 6g, 7g, 8g, 9g, 10g, repeat step 5) to step 9), obtain respectively vibration frequency be 10Hz ?2KHz, vibration peak acceleration is respectively the magnetic field sensitivity S of optical fibre gyro under 2g, 3g, 4g, 5g, 6g, 7g, 8g, 9g, 10g condition
2, S
3, S
4, S
5, S
6, S
7, S
8, S
9, S
10;
11) by step 4) in S
0with step 9), step 10) in S
i(i=1,, 10) substitute into respectively
obtain respectively vibration frequency be 10Hz ?2KHz, vibration peak acceleration be respectively 1g, 2g, 3g, 4g, 5g, 6g, 7g, 8g, 9g, 10g, radial magnetic field intensity size be optical fibre gyro under B condition Zhen Dong ?magnetic Field Coupling degree K
1, K
2, K
3, K
4, K
5, K
6, K
7, K
8, K
9, K
10.
2. measuring method as claimed in claim 1, it is characterized in that, described radial magnetic field B is produced by Helmholtz coil, and Helmholtz coil is by driven with current sources.
3. measuring method as claimed in claim 1, it is characterized in that, described Hall element is positioned at Helmholtz coil central position.
4. measuring method as claimed in claim 1, it is characterized in that, described each measuring process, its time all should be greater than 1 minute, to reduce the stochastic error in measuring process.
5. measuring method as claimed in claim 1, it is characterized in that, zero of described optical fibre gyro is the mean value of output data in each Measuring Time of optical fibre gyro partially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310721542.3A CN103712634B (en) | 2013-12-24 | 2013-12-24 | The measuring method of optical fibre gyro vibration-magnetic field degree of cross-linking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310721542.3A CN103712634B (en) | 2013-12-24 | 2013-12-24 | The measuring method of optical fibre gyro vibration-magnetic field degree of cross-linking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103712634A CN103712634A (en) | 2014-04-09 |
| CN103712634B true CN103712634B (en) | 2016-04-13 |
Family
ID=50405796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310721542.3A Expired - Fee Related CN103712634B (en) | 2013-12-24 | 2013-12-24 | The measuring method of optical fibre gyro vibration-magnetic field degree of cross-linking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103712634B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106032992A (en) * | 2015-03-19 | 2016-10-19 | 北京自动化控制设备研究所 | Apparatus and method for measuring magnetic field sensitivity of fiber optic gyroscope in full temperature scope |
| CN108919152B (en) * | 2018-04-20 | 2024-02-06 | 福建省计量科学研究院（福建省眼镜质量检验站） | Magnetic sensitivity three-dimensional verification system and method for vibration and impact sensor |
| CN118010069B (en) * | 2024-04-10 | 2024-06-11 | 四川图林科技有限责任公司 | Vibration error compensation method of hemispherical resonator gyroscope |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0402565A1 (en) * | 1989-06-10 | 1990-12-19 | Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung | Method of autocorrecting a fiber optic gyroscope using a 3x3-coupler |
| CN1888822A (en) * | 2006-07-28 | 2007-01-03 | 北京航空航天大学 | Optical fiber gyro assembling test platform adapted to space application |
| CN101034179A (en) * | 2007-03-29 | 2007-09-12 | 浙江大学 | Estimation method for performance of depolarized optical fiber gyro depolarizer |
| CN101285690A (en) * | 2008-05-26 | 2008-10-15 | 浙江大学 | Optical fibre gyroscope magnetic field-temperature sensitivity test method |
| CN101769761A (en) * | 2010-01-29 | 2010-07-07 | 浙江大学 | Device for testing radial magnetic field sensitivity of fiber optic gyro |
| CN102353387A (en) * | 2011-08-25 | 2012-02-15 | 西安电子科技大学 | Automated testing system and method for index parameters of fiber optic gyro |
-
2013
- 2013-12-24 CN CN201310721542.3A patent/CN103712634B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0402565A1 (en) * | 1989-06-10 | 1990-12-19 | Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung | Method of autocorrecting a fiber optic gyroscope using a 3x3-coupler |
| CN1888822A (en) * | 2006-07-28 | 2007-01-03 | 北京航空航天大学 | Optical fiber gyro assembling test platform adapted to space application |
| CN101034179A (en) * | 2007-03-29 | 2007-09-12 | 浙江大学 | Estimation method for performance of depolarized optical fiber gyro depolarizer |
| CN101285690A (en) * | 2008-05-26 | 2008-10-15 | 浙江大学 | Optical fibre gyroscope magnetic field-temperature sensitivity test method |
| CN101769761A (en) * | 2010-01-29 | 2010-07-07 | 浙江大学 | Device for testing radial magnetic field sensitivity of fiber optic gyro |
| CN102353387A (en) * | 2011-08-25 | 2012-02-15 | 西安电子科技大学 | Automated testing system and method for index parameters of fiber optic gyro |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103712634A (en) | 2014-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103256941B (en) | A kind of method that MEMS gyroscope is high-order temperature compensated | |
| CN101339093B (en) | Optical fiber ring quality measurement method and its device for optical fibre gyroscope | |
| CN105842483A (en) | Triaxial accelerometer sensitivity measurement method | |
| CN103175602B (en) | Modal testing system and modal testing method on basis of single-point laser continuous plane-scanning vibration measurement | |
| CN102788595A (en) | Optical fiber gyroscope frequency characteristic elevating method and device based on Faraday effect | |
| CN107391818A (en) | A kind of Vibrating modal parameters recognition methods based on state observer | |
| CN103868530B (en) | A kind of method of testing of closed-loop fiber optic gyroscope angular acceleration tracking performance | |
| CN103499845B (en) | A kind of method utilizing gravity gradiometer to measure the Gradient of Gravitation | |
| CN103389114B (en) | 3 axis MEMS gyro non-orthogonal errors scaling method based on g sensitivity | |
| CN113358899B (en) | Accelerometer and temperature self-compensation method thereof | |
| CN103712634B (en) | The measuring method of optical fibre gyro vibration-magnetic field degree of cross-linking | |
| CN103884870A (en) | Method and device for improving accelerometer calibration accuracy | |
| Tang et al. | A MOEMS accelerometer based on photoelastic effect | |
| CN104713575A (en) | Method for testing frequency characteristic of closed loop fiber optic gyroscope | |
| Concepcion et al. | Triaxial MEMS digital accelerometer and temperature sensor calibration techniques for structural health monitoring of reinforced concrete bridge laboratory test platform | |
| CN102661782A (en) | Rapid measurement method and device of super-low-frequency vibration parameter quantity value | |
| CN103791917A (en) | Device and method for testing vibration-temperature crosslinking coupling degree of fiber optic gyroscope | |
| D'Emilia et al. | Calibration test bench for three-axis accelerometers An accurate and low-cost proposal | |
| CN103823083B (en) | Improve the method and system of accelerometer calibration precision | |
| CN104457792B (en) | A method of measuring optic fiber gyroscope graduation factor under without mechanical rotation condition | |
| CN110987000A (en) | Method for accurately measuring zero-bias magnetic field sensitivity of laser gyroscope | |
| CN109085654A (en) | A kind of rotating accelerometer gravity gradiometer digital modeling emulation mode | |
| CN104765075A (en) | Dual-optical-path testing device for light speed limited effect in absolute gravimeter | |
| CN104457791B (en) | Method for measuring fiber-optic gyroscope bandwidth under static condition | |
| Molina et al. | Frequency measurement by principle of rational approximation for aerospace frequency domain mechanical parameter sensors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Lei Inventor after: Zhang Dengwei Inventor after: Zhou Yanru Inventor after: Shu Xiaowu Inventor after: Che Shuangliang Inventor after: Liu Cheng Inventor before: Zhang Dengwei Inventor before: Zhou Yanru Inventor before: Shu Xiaowu Inventor before: Che Shuangliang Inventor before: Liu Cheng |
|
| CB03 | Change of inventor or designer information | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20211224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |