CN110553638A - Harmonic oscillator structure of laser gyroscope - Google Patents
Harmonic oscillator structure of laser gyroscope Download PDFInfo
- Publication number
- CN110553638A CN110553638A CN201910928668.5A CN201910928668A CN110553638A CN 110553638 A CN110553638 A CN 110553638A CN 201910928668 A CN201910928668 A CN 201910928668A CN 110553638 A CN110553638 A CN 110553638A
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- central body
- spokes
- vibration transmission
- laser gyro
- wall
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- 230000005540 biological transmission Effects 0.000 claims abstract description 43
- 230000003287 optical effect Effects 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000013016 damping Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Classifications
-
- 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
- G01C19/72—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams with counter-rotating light beams in a passive ring, e.g. fibre laser gyrometers
- G01C19/721—Details
- G01C19/722—Details of the mechanical construction
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Gyroscopes (AREA)
Abstract
the invention discloses a harmonic oscillator structure of a laser gyroscope, which comprises a central body, a resonance ring, spokes, a vibration transmission beam and a vibration transmission sheet, wherein the center of the central body is provided with a central hole, the resonance ring is sleeved outside the central body, the outer wall of the central body is connected with the inner wall of the resonance ring through the spokes, the spokes are annularly and symmetrically distributed around the central hole, at least one side of the spokes is bonded with a piezoelectric element, the central body is also connected with the vibration transmission sheet through the vibration transmission beams, and the outer wall of the vibration transmission sheet is matched with the inner wall of an accommodating hole formed in an optical cavity of the laser gyroscope. The remarkable effects are as follows: the structure is simple, the manufacture is simple, the mechanical sensitivity is higher than that of the traditional structure, the locking area of the optical laser gyro is well reduced or even eliminated, and the performance and the precision of a laser gyro product are effectively improved.
Description
Technical Field
the invention relates to the technical field of laser gyroscope production, in particular to a harmonic oscillator structure of a laser gyroscope.
Background
The optical laser gyro does not need a mechanical stable platform due to the unlimited angular velocity measurement range, so that the optical laser gyro becomes an ideal strapdown angular velocity sensor and is widely applied to navigation, positioning and orientation. But the performance and the precision of the product are affected due to the locking problem of the lock area.
In order to reduce the lock area and even eliminate the lock area, a jitter offset frequency device, namely a vibrator component is introduced, and the laser gyro can work outside the lock area and avoid the lock area. The piezoelectric vibrator is deformed by electrifying, so that spokes of the vibrator are driven to deform and start vibration. Vibrators in the prior art are all of annularly symmetrical structures, and common structural forms include rings, cups and hemispheres. The performance of the vibrator component is mainly determined by the self structure of the vibrator and the performance of the piezoelectric ceramic piece, and the vibrator component is a direct component influencing the precision and the sensitivity of the laser gyro in the manufacturing process of the laser gyro. The existing vibrator structure form has the problems of high processing precision requirement, high processing difficulty, high manufacturing cost and the like.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a harmonic oscillator structure of a laser gyroscope, which has a simple structure and is convenient to process, can well reduce or even eliminate the lock area of the optical laser gyroscope, and powerfully improves the performance and the precision of a laser gyroscope product.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
The utility model provides a harmonic oscillator structure of laser gyro which the key lies in: including central body, resonance ring, spoke, biography roof beam that shakes and the piece that shakes, the center of central body disposes the centre bore, resonance ring cover is located the outside of central body, the outer wall of central body through many spokes with resonance ring's inner wall is connected, and many the spoke centers on the centre bore is annular symmetric distribution at least one side of spoke bonds and has piezoelectric element still through many respectively on the central body the biography is shaken the roof beam and is connected with the piece that shakes, the outer wall that the piece that shakes suits mutually with the downthehole wall of the holding that sets up on the laser gyro optical cavity.
Furthermore, a plurality of mounting steps are formed on the upper surface of the resonant ring in an upward protruding mode, and a mounting hole is formed in the center of each mounting step.
Further, the mounting step is formed at a position corresponding to a connection position of the spoke and the resonance ring.
Further, the upper end surfaces of the spokes are flush with the upper end surface of the central body, and the lower end surfaces of the spokes extend to the middle lower part of the central body; the upper end surface of the vibration transmission beam is positioned at the middle upper part of the central body, and the lower end surface of the vibration transmission beam is flush with the lower end surface of the central body.
furthermore, the spokes and the vibration transmission beam are arranged at intervals, and the spokes and the vibration transmission beam are consistent in height.
Further, the number of the spokes is 4n, and n is an integer not less than 1.
Furthermore, the piezoelectric elements are adhered to two sides of the spoke.
Furthermore, the connecting part of the spokes and the central body adopts a circular arc surface for smooth transition.
Furthermore, the outer wall of the vibration transmission sheet is an arc surface, and the vibration transmission sheets are uniformly distributed on the same circumference.
further, the diameter of the circumference surrounded by the vibration transmission sheets is smaller than that of the resonance ring.
The invention has the following remarkable effects:
1. The structure is simple, only the central body, the resonance ring, the spokes, the vibration transmission beam and the vibration transmission sheet are included, and redundant materials are completely removed, so that the energy consumption and noise generation parts of the vibrator are greatly reduced, the signal-to-noise ratio of the vibrator is greatly improved, and meanwhile, the manufacturing process is simpler;
2. The piezoelectric elements are uniformly distributed on the circumference taking the central body as a circle, and the gaps between the spokes reduce the structural damping and the air damping of the vibrator, so that the vibrator can vibrate with larger amplitude, and the mechanical sensitivity of the vibrator is higher than that of the vibrator in a traditional structure;
3. The central body, the piezoelectric element, the vibration transmission piece and the resonance ring which are coaxially arranged are adopted, on the premise that the performance of the piezoelectric element is fixed, the locking area of the optical laser gyro is well reduced or even eliminated, and the performance and the precision of a laser gyro product are effectively improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
Fig. 5 is a sectional view B-B of fig. 3.
Detailed Description
The following provides a more detailed description of the embodiments and the operation of the present invention with reference to the accompanying drawings.
As shown in fig. 1 to 5, a resonator structure of a laser gyroscope includes a central body 1, a resonance ring 2, spokes 3, a vibration transmission beam 4 and a vibration transmission sheet 5, wherein four mounting steps 6 are formed by upward protrusion of the upper surface of the resonance ring 2, the four mounting steps 6 are symmetrically distributed, a mounting hole 7 is formed in the center of each mounting step 6, a central hole 8 is configured in the center of the central body 1, the resonance ring 2 is sleeved outside the central body 1, the outer wall of the central body 1 is connected with the inner wall of the resonance ring 2 through the four spokes 3, the four spokes 3 are annularly and symmetrically distributed around the central hole 8, the connecting positions of the spokes 3 and the central body 1 are in smooth transition by adopting arc surfaces, and the forming positions of the mounting steps 6 correspond to the connecting positions of the spokes 3 and the resonance ring 2, piezoelectric element 9 is bonded to two sides of spoke 3, that is, piezoelectric element 9 is annular evenly distributed around center hole 8 still be connected with vibration transmission piece 5 through four vibration transmission beams 4 on central body 1, vibration transmission beam 4 and vibration transmission piece 5 are connected and are roughly in a T-shaped structure, spoke 3 with vibration transmission beam 4 sets up alternately, the outer wall of vibration transmission piece 5 and the inner wall of the accommodating hole opened on the laser gyro optical cavity adapt to each other, and the central lines of four spokes 3, four vibration transmission beams 4 and the central line of resonance ring 2 are collinear.
preferably, the height of the spoke 3 is consistent with that of the piezoelectric element 9, the height of the spoke 3 is consistent with that of the vibration transmission beam 4, and the height of the vibration transmission beam 4 is consistent with that of the vibration transmission sheet 5. However, the installation height of the spoke 3 is higher than that of the vibration transmission beam 4, and the specific installation relationship between the spoke 3 and the vibration transmission beam 4 in this example is as follows: the upper end surfaces of the spokes 3 are flush with the upper end surface of the central body 1, and the lower end surfaces of the spokes 3 extend to the middle lower part of the central body 1; the upper end surface of the vibration transmission beam 4 is positioned at the middle upper part of the central body 1, and the lower end surface of the vibration transmission beam 4 is flush with the lower end surface of the central body 1.
Preferably, the outer wall of the vibration transmission plate 5 is an arc surface, the four vibration transmission plates 5 are uniformly distributed on the same circumference, and the diameter of the circumference surrounded by the four vibration transmission plates 5 is smaller than the inner diameter of the resonance ring 2.
Preferably, the central body 1 has a length of 29 mm; the outer diameter of the resonance ring 2 is 29.5mm, the inner diameter is 20.4mm, and the height is 5 mm; the spokes 3 are 2mm in thickness and 23mm in length; the diameter of the circumference surrounded by the four vibration transmission sheets 5 is 18.7mm, and the length is 23 mm; the diameter of the mounting hole 7 is 4mm, and the length and the height of the vibrator are 29 mm.
The central body 1, the piezoelectric element 9, the vibration transmission piece 5 and the resonance ring 2 which are coaxially arranged are adopted in the embodiment, so that the locking area of the optical laser gyro is well reduced or even eliminated on the premise that the performance of the piezoelectric element 9 is fixed, and the performance and the precision of a laser gyro product are effectively improved.
The technical solution provided by the present invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A harmonic oscillator structure of a laser gyro is characterized in that: including central body, resonance ring, spoke, biography roof beam that shakes and the piece that shakes, the center of central body disposes the centre bore, resonance ring cover is located the outside of central body, the outer wall of central body through many spokes with resonance ring's inner wall is connected, and many the spoke centers on the centre bore is annular symmetric distribution at least one side of spoke bonds and has piezoelectric element still through many respectively on the central body the biography is shaken the roof beam and is connected with the piece that shakes, the outer wall that the piece that shakes suits mutually with the downthehole wall of the holding that sets up on the laser gyro optical cavity.
2. The resonator structure of a laser gyro of claim 1, characterized in that: the upper surface of resonance ring upwards swells and is formed with a plurality of installation steps, every the mounting hole has all been seted up at the center of installation step.
3. The resonator structure of a laser gyro of claim 2, characterized in that: the mounting step is formed at a position corresponding to a connection position of the spoke and the resonance ring.
4. The resonator structure of a laser gyro of claim 1, characterized in that: the upper end surfaces of the spokes are flush with the upper end surface of the central body, and the lower end surfaces of the spokes extend to the middle lower part of the central body; the upper end surface of the vibration transmission beam is positioned at the middle upper part of the central body, and the lower end surface of the vibration transmission beam is flush with the lower end surface of the central body.
5. The resonator structure of a laser gyro of claim 4, wherein: the spokes and the vibration transmission beams are arranged at intervals, and the spokes and the vibration transmission beams are consistent in height.
6. the resonator structure of the laser gyroscope according to any one of claims 1-5, characterized in that: the number of the spokes is 4n, and n is an integer not less than 1.
7. The resonator structure of a laser gyroscope of any of claim 6, wherein: the piezoelectric elements are bonded to both sides of the spokes.
8. The resonator structure of a laser gyro of claim 7, wherein: the connecting part of the spokes and the central body adopts the smooth transition of an arc surface.
9. The resonator structure of a laser gyro of claim 1, characterized in that: the outer wall of the vibration transmission piece is an arc surface, and the vibration transmission pieces are uniformly distributed on the same circumference.
10. The resonator structure of a laser gyro of claim 9, wherein: the diameter of the circumference surrounded by the vibration transmission sheets is smaller than that of the resonance ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910928668.5A CN110553638A (en) | 2019-09-28 | 2019-09-28 | Harmonic oscillator structure of laser gyroscope |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910928668.5A CN110553638A (en) | 2019-09-28 | 2019-09-28 | Harmonic oscillator structure of laser gyroscope |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112665571A (en) * | 2020-12-01 | 2021-04-16 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Embedded shaking system of laser gyroscope |
Citations (9)
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|---|---|---|---|---|
| EP0390180A2 (en) * | 1989-03-30 | 1990-10-03 | TELDIX GmbH | Position measuring device for the light beams of a laser gyroscope |
| US5063321A (en) * | 1988-02-24 | 1991-11-05 | Teldix Gmbh | Torsional vibration drive |
| KR20030066256A (en) * | 2002-02-05 | 2003-08-09 | 사단법인 고등기술연구원 연구조합 | Axial dither for ring laser gyroscope |
| CN106507911B (en) * | 2010-08-27 | 2014-04-23 | 中国航空工业第六一八研究所 | Laser gyro is without telescopic shaker mechanism |
| CN104215233A (en) * | 2014-09-18 | 2014-12-17 | 中国人民解放军国防科学技术大学 | Cylindrical shell gyroscope harmonic oscillator with rigid shaft self-stability |
| CN206113952U (en) * | 2016-08-23 | 2017-04-19 | 中国航空工业集团公司西安飞行自动控制研究所 | Novel shake offset frequency mechanism of laser gyro and shake wheel thereof |
| CN207515791U (en) * | 2017-11-01 | 2018-06-19 | 西安德讯威光电测控技术有限公司 | A kind of hollow circular four spoke dithering-wheel of double muscle |
| WO2018134377A1 (en) * | 2017-01-20 | 2018-07-26 | Centre National De La Recherche Scientifique | Probe for atomic force microscope equipped with an optomechanical resonator, and atomic force microscope comprising such a probe |
| CN210774086U (en) * | 2019-09-28 | 2020-06-16 | 中科天翼导航技术有限公司 | Laser gyro vibrator structure |
-
2019
- 2019-09-28 CN CN201910928668.5A patent/CN110553638A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5063321A (en) * | 1988-02-24 | 1991-11-05 | Teldix Gmbh | Torsional vibration drive |
| EP0390180A2 (en) * | 1989-03-30 | 1990-10-03 | TELDIX GmbH | Position measuring device for the light beams of a laser gyroscope |
| KR20030066256A (en) * | 2002-02-05 | 2003-08-09 | 사단법인 고등기술연구원 연구조합 | Axial dither for ring laser gyroscope |
| CN106507911B (en) * | 2010-08-27 | 2014-04-23 | 中国航空工业第六一八研究所 | Laser gyro is without telescopic shaker mechanism |
| CN104215233A (en) * | 2014-09-18 | 2014-12-17 | 中国人民解放军国防科学技术大学 | Cylindrical shell gyroscope harmonic oscillator with rigid shaft self-stability |
| CN206113952U (en) * | 2016-08-23 | 2017-04-19 | 中国航空工业集团公司西安飞行自动控制研究所 | Novel shake offset frequency mechanism of laser gyro and shake wheel thereof |
| WO2018134377A1 (en) * | 2017-01-20 | 2018-07-26 | Centre National De La Recherche Scientifique | Probe for atomic force microscope equipped with an optomechanical resonator, and atomic force microscope comprising such a probe |
| CN207515791U (en) * | 2017-11-01 | 2018-06-19 | 西安德讯威光电测控技术有限公司 | A kind of hollow circular four spoke dithering-wheel of double muscle |
| CN210774086U (en) * | 2019-09-28 | 2020-06-16 | 中科天翼导航技术有限公司 | Laser gyro vibrator structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112665571A (en) * | 2020-12-01 | 2021-04-16 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Embedded shaking system of laser gyroscope |
| CN112665571B (en) * | 2020-12-01 | 2023-10-13 | 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） | Embedded shaking system of laser gyro |
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