CN102519446A - Resonant optical gyroscope based on fast-speed high-precision frequency tracking and locking technology - Google Patents
Resonant optical gyroscope based on fast-speed high-precision frequency tracking and locking technology Download PDFInfo
- Publication number
- CN102519446A CN102519446A CN2011104107220A CN201110410722A CN102519446A CN 102519446 A CN102519446 A CN 102519446A CN 2011104107220 A CN2011104107220 A CN 2011104107220A CN 201110410722 A CN201110410722 A CN 201110410722A CN 102519446 A CN102519446 A CN 102519446A
- Authority
- CN
- China
- Prior art keywords
- module
- optical
- frequency shifter
- feedback module
- modulation
- 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.)
- Granted
Links
Images
Landscapes
- Gyroscopes (AREA)
Abstract
The invention discloses servo loop feedback control technology in a resonant optical gyroscope. The resonant optical gyroscope comprises an optical system composed of a tunable laser, an optical splitter, three frequency shifters, two modulators, an optical resonant cavity, and a photoelectric conversion module; and a processing circuit composed of a modulation/demodulation module, and three feedback locking modules. The invention relates to control technology where a P (proportion) module forms a fast small-amplitude frequency feedback while an I (integrator) or PI module forms a slow large-amplitude frequency feedback, adopts a high-order integrator I<n> (n is an integer greater than or equal to 2) or PI<n> to track the temperature change caused resonant frequency linear drift problem and suppress low frequency noise, and connects the P, I and I<n> in parallel to form a resonant frequency servo loop, to therefore reduce the resonant frequency drift caused by rapid laser frequency fluctuation and ambient temperature in the loop, and improve frequency locking precision and system frequency response characteristics.
Description
Technical field
The resonance frequency servo loop technology in the formula optical gyroscope that the present invention relates to shake relates in particular to a kind of resonance type optical gyroscope based on quick, high-precision frequency-tracking lock-in techniques.
Background technology
Resonance type optical gyroscope is a kind of high-precision novel angular-rate sensor based on the Sagnac effect; Its Sensitive Apparatus optics ring resonator can adopt the method for very short optical fiber or integrated optics to realize, thus miniaturization and integrated on have special advantages.In resonance type optical gyroscope, obtain angular speed through detecting resonator cavity resonance frequency difference clockwise and counterclockwise light path.Actual optical device such as laser instrument, resonator cavity receive Effect of Environmental such as temperature and stress, can in loop, introduce various reciprocity noises, and the change of the clockwise and counterclockwise resonance frequency that the Sagnac effect causes are nonreciprocal, and extremely faint.Therefore; The modulation demodulation system of resonance type optical gyroscope must lock the light wave that one of them direction is propagated at least; Utilize the frequency servo loop to make the output light frequency of laser instrument be in resonant condition all the time; Obtain angular velocity through indirect detection other direction wave travels and laser instrument frequency difference, the frequency-tracking lock-in techniques will directly influence gyro actual detected precision.
Traditional merely based on ratio (Proportion; P) the resonance frequency servo loop of technology technology has greater advantage on response speed, in theory when P is infinitely great; Can eliminate the locking residual error in loop; Because the existence of time-delay, as P greater than certain critical value the time, vibrating will appear in loop in the actual loop.Therefore, often has bigger residual error after the resonance frequency servo loop locking based on P merely.On the ratio basis, (Integrator, I) link can effectively be eliminated the locking residual error, yet the affiliation that adds of integral element reduces loop response speed greatly to add integration.In addition, when variation of ambient temperature, will cause the resonance frequency linear drift, and at this time need high order exponential integral device to follow the tracks of the problems such as resonance frequency linear drift that temperature variation causes.
Resonance frequency servo loop technology, intend through the P module constitute fast, frequency feedback by a small margin, I (or PI) module constitutes slowly, frequency feedback control technology significantly, high order exponential integral device I
n(n is an integer, and n>=2) or (PI
n) be used to follow the tracks of the resonance frequency linear drift problem that temperature variation causes, with above-mentioned P, I and I
nParallel connection constitutes the resonance frequency servo loop, thereby reduces the resonance frequency drift problem that laser frequency rapid fluctuations and environment temperature etc. cause in the loop, has both improved the frequency locking precision, improves the system frequency response characteristic again.
Summary of the invention
The object of the invention overcomes the prior art deficiency, and a kind of resonance type optical gyroscope based on quick, high-precision frequency-tracking lock-in techniques is provided.
A kind of resonance type optical gyroscope based on servo loop closed loop lock-in techniques comprises the optical system that is made up of tunable laser, optical splitters, first frequency shifter, second frequency shifter, the 3rd frequency shifter, first modulator, second modulator, optical resonator, photoelectric conversion module, and the treatment circuit that is made up of modulation module, proportional integral feedback module, proportional control feedback module and high order integral feedback module; Tunable laser, the 3rd frequency shifter, optical splitters, first frequency shifter, first modulator, optical resonator, photoelectric conversion module, modulation module, proportional control feedback module link to each other in order; The proportional control feedback module links to each other with the 3rd frequency shifter; Laser instrument proportional integral feedback module, high order integral feedback module respectively links to each other; Optical splitters links to each other with second frequency shifter, second modulator, optical resonator in order; The modulation module links to each other with the proportional integral feedback module, and the modulation module links to each other with high order integral feedback module.
. a kind of resonance type optical gyroscope based on servo loop closed loop lock-in techniques comprises the optical system that is made up of tunable laser, optical splitters, first modulator, second modulator, first frequency shifter, second frequency shifter, the 3rd frequency shifter, optical resonator, photoelectric conversion module; And the treatment circuit that constitutes by modulation module, proportional control feedback module, proportional integral feedback module and high order integral feedback module; Tunable laser links to each other with the 3rd frequency shifter, optical splitters, first modulator, first frequency shifter, optical resonator, photoelectric conversion module, modulation module, proportional control feedback module in order; Laser instrument links to each other with high order integral feedback module with the proportional integral feedback module respectively; Optical splitters links to each other with second modulator, second frequency shifter, optical resonator in order; The modulation module links to each other with proportional control feedback module, the 3rd frequency shifter in order; The modulation module links to each other with proportional integral feedback module, laser instrument in order, and the modulation module links to each other with high order integral feedback module, laser instrument in order.
A kind of resonance type optical gyroscope based on servo loop closed loop lock-in techniques comprises the optical system that is made up of tunable laser, the 3rd frequency shifter, modulator, optical splitters, first frequency shifter, second frequency shifter, optical resonator, photoelectric conversion module; And the treatment circuit that constitutes by modulation module, proportional control feedback module, proportional integral feedback module and high order integral feedback module; Tunable laser links to each other with modulator, the 3rd frequency shifter, optical splitters, first frequency shifter, optical resonator, photoelectric conversion module, modulation module, proportional control feedback module in order; Proportional control feedback module and the 3rd frequency shifter; Optical splitters links to each other with second frequency shifter, optical resonator in order; The modulation module links to each other with proportional integral feedback module, laser instrument in order, and the modulation module links to each other with high order integral feedback module, laser instrument device in order.
A kind of resonance type optical gyroscope based on servo loop closed loop lock-in techniques comprises the optical system that is made up of tunable laser, optical splitters, the first modulation frequency shifter, the second modulation frequency shifter, the 3rd frequency shifter, optical resonator, photoelectric conversion module; And the treatment circuit that constitutes by modulation module, proportional control feedback module, proportional integral feedback module and high order integral feedback module; Tunable laser links to each other with the 3rd frequency shifter, optical splitters, the first modulation frequency shifter, optical resonator, photoelectric conversion module, modulation module, proportional control feedback module in order; The proportional control feedback module links to each other with the 3rd frequency shifter; Optical splitters links to each other with the second modulation frequency shifter, optical resonator in order; The modulation module links to each other with proportional integral feedback module, laser instrument in order, and the modulation module links to each other with high order integral feedback module, laser instrument in order.
A kind of resonance type optical gyroscope based on servo loop closed loop lock-in techniques comprises the optical system that is made up of tunable laser, optical splitters, the first modulation frequency shifter, the second modulation frequency shifter, optical resonator, photoelectric conversion module; And the treatment circuit that constitutes by modulation module, proportional control feedback module, proportional integral feedback module and high order integral feedback module; Tunable laser links to each other with optical splitters, the first modulation frequency shifter, optical resonator, photoelectric conversion module, modulation module, proportional control feedback module in order; The proportional control feedback module links to each other with tunable laser; Optical splitters links to each other with the second modulation frequency shifter, optical resonator in order; The modulation module links to each other with proportional integral feedback module, laser instrument in order, and the modulation module links to each other with high order integral feedback module, laser instrument in order.
Described first frequency shifter, second frequency shifter and the 3rd frequency shifter are acousto-optic frequency shifters or optical phase modulator.The described first modulation frequency shifter, the second modulation frequency shifter and the 3rd frequency shifter are acousto-optic frequency shifters or optical phase modulator.Described optical resonator is optical fibre device or integrated optical device.The structure of described optical resonator is transmission-type optical resonator or reflective optic resonator cavity.
Passing ratio of the present invention (Proportion, P) module constitute fast, frequency feedback by a small margin, integration (Integrator, I) technology constitute slowly, frequency feedback control technology significantly, high order exponential integral device I
nBe used to follow the tracks of the resonance frequency linear drift problem that temperature variation causes, with above-mentioned P, I and I
nParallel connection constitutes the resonance frequency servo loop, thereby reduces the resonance frequency drift problem that laser frequency rapid fluctuations and environment temperature etc. cause in the loop, has both improved the frequency locking precision, improves the system frequency response characteristic again.
Description of drawings
Fig. 1 is based on the resonance type optical gyroscope I type structural representation of servo loop closed loop lock-in techniques;
Fig. 2 is based on the resonance type optical gyroscope II type structural representation of servo loop closed loop lock-in techniques;
Fig. 3 is based on the resonance type optical gyroscope III type structural representation of servo loop closed loop lock-in techniques;
Fig. 4 is based on the resonance type optical gyroscope IV type structural representation of servo loop closed loop lock-in techniques;
Fig. 5 is based on the resonance type optical gyroscope V-structure synoptic diagram of servo loop closed loop lock-in techniques.
Embodiment
Specify the present invention below in conjunction with embodiment and accompanying drawing, but the present invention is not limited only to this.
As shown in Figure 1; A kind of resonance type optical gyroscope based on servo loop closed loop lock-in techniques comprises the optical system that is made up of tunable laser, optical splitters, first frequency shifter (acousto-optic frequency shifters AOM), second frequency shifter (acousto-optic frequency shifters AOM), the 3rd frequency shifter (acousto-optic frequency shifters AOM), first modulator (phase-modulator PM), second modulator (phase-modulator PM), optical resonator (chip of light waveguide), photoelectric conversion module (PD), and by the treatment circuit of modulation module (lock-in amplifier lock-in), proportional integral feedback module (FPGA), proportional control feedback module (FPGA) and high order integral feedback module (FPGA) formation; Tunable laser, the 3rd frequency shifter, optical splitters, first frequency shifter, first modulator, optical resonator, photoelectric conversion module, modulation module, proportional control feedback module link to each other in order; The proportional control feedback module links to each other with the 3rd frequency shifter; Laser instrument proportional integral feedback module, high order integral feedback module respectively links to each other; Optical splitters links to each other with second frequency shifter, second modulator, optical resonator in order; The modulation module links to each other with the proportional integral feedback module, and the modulation module links to each other with high order integral feedback module.
Consider actual laser capacitive load characteristic, fashionable when adding of P link, can be through increasing a phase-modulator, in order to improve loop response speed at laser output.The optical signals optical splitters that tunable laser is sent is divided into two-way; Go into the optics resonator cavity through optical device such as frequency shifter and modulator are laggard, the signal that the suitable counterclockwise two-beam that in optical resonator, transmits will have a rotation information outputs to photoelectric conversion module with the form of optical frequency difference; Photoelectric conversion module converts the suitable counterclockwise optical signalling that sensitivity obtains into electrical signal, and outputs in the modulation module of rear end; The modulation module; Mainly be divided into modulation and demodulation two parts; Modulating part produces the light signal modulation that modulation signal is used for the optical system modulator, and provides demodulation required synchronizing signal, and the demodulation part is converted into voltage differential signal with the difference on the frequency signal of photoelectric conversion module output through demodulation; Realize the extraction of gyro signal, and output to the feedback locking module; The proportional feedback module is accomplished and is fed back frequency difference signal fast, by a small margin, and feedback signal is directly imported laser instrument rear end acousto-optic frequency shifters.By proportional integral and high order integral feedback control module light path system is carried out significantly, slowly feeds back, feedback signal directly feeds back to tunable laser, forms loop control and has also followed the tracks of the tuning curve drift that temperature variation causes.With above-mentioned P, I and I
nParallel connection constitutes the resonance frequency servo loop, thereby reduces laser frequency rapid fluctuations and environment temperature etc. cause in the loop resonance frequency drift problem and low-frequency noise problem, has both improved the frequency locking precision, improves the system frequency response characteristic again.
As shown in Figure 2; A kind of resonance type optical gyroscope based on servo loop closed loop lock-in techniques comprises the optical system that is made up of tunable laser, optical splitters, first modulator, second modulator, first frequency shifter, second frequency shifter, the 3rd frequency shifter, optical resonator, photoelectric conversion module; And the treatment circuit that constitutes by modulation module, proportional control feedback module, proportional integral feedback module and high order integral feedback module; Tunable laser links to each other with the 3rd frequency shifter, optical splitters, first modulator, first frequency shifter, optical resonator, photoelectric conversion module, modulation module, proportional control feedback module in order; Laser instrument links to each other with high order integral feedback module with the proportional integral feedback module respectively; Optical splitters links to each other with second modulator, second frequency shifter, optical resonator in order; The modulation module links to each other with proportional control feedback module, the 3rd frequency shifter in order; The modulation module links to each other with proportional integral feedback module, laser instrument in order, and the modulation module links to each other with high order integral feedback module, laser instrument in order.
Signal path and first kind of implementation method basically identical, difference are in the shift frequency in laser signal experience modulation earlier back, the optical resonator on the transmission road.
As shown in Figure 3; A kind of resonance type optical gyroscope based on servo loop closed loop lock-in techniques comprises the optical system that is made up of tunable laser, the 3rd frequency shifter, modulator, optical splitters, first frequency shifter, second frequency shifter, optical resonator, photoelectric conversion module; And the treatment circuit that constitutes by modulation module, proportional control feedback module, proportional integral feedback module and high order integral feedback module; Tunable laser links to each other with modulator, the 3rd frequency shifter, optical splitters, first frequency shifter, optical resonator, photoelectric conversion module, modulation module, proportional control feedback module in order; Proportional control feedback module and the 3rd frequency shifter; Optical splitters links to each other with second frequency shifter, optical resonator in order; The modulation module links to each other with proportional integral feedback module, laser instrument in order, and the modulation module links to each other with high order integral feedback module, laser instrument device in order.
Signal path and first kind of implementation method basically identical are distinguished to be in laser signal is whole earlier and are modulated, and through behind the optical branching device, distinguish shift frequency again.
As shown in Figure 4; A kind of resonance type optical gyroscope based on servo loop closed loop lock-in techniques comprises the optical system that is made up of tunable laser, optical splitters, the first modulation frequency shifter, the second modulation frequency shifter, the 3rd frequency shifter, optical resonator, photoelectric conversion module; And the treatment circuit that constitutes by modulation module, proportional control feedback module, proportional integral feedback module and high order integral feedback module; Tunable laser links to each other with the 3rd frequency shifter, optical splitters, the first modulation frequency shifter, optical resonator, photoelectric conversion module, modulation module, proportional control feedback module in order; The proportional control feedback module links to each other with the 3rd frequency shifter; Optical splitters links to each other with the second modulation frequency shifter, optical resonator in order; The modulation module links to each other with proportional integral feedback module, laser instrument in order, and the modulation module links to each other with high order integral feedback module, laser instrument in order.
Signal path and first kind of implementation method basically identical, difference are in the whole shift frequency in laser signal elder generation, are modulating respectively through shunt.
As shown in Figure 5; A kind of resonance type optical gyroscope based on servo loop closed loop lock-in techniques comprises the optical system that is made up of tunable laser, optical splitters, the first modulation frequency shifter, the second modulation frequency shifter, optical resonator, photoelectric conversion module; And the treatment circuit that constitutes by modulation module, proportional control feedback module, proportional integral feedback module and high order integral feedback module; Tunable laser links to each other with optical splitters, the first modulation frequency shifter, optical resonator, photoelectric conversion module, modulation module, proportional control feedback module in order; The proportional control feedback module links to each other with tunable laser; Optical splitters links to each other with the second modulation frequency shifter, optical resonator in order; The modulation module links to each other with proportional integral feedback module, laser instrument in order, and the modulation module links to each other with high order integral feedback module, laser instrument in order.
Signal path and first kind of implementation method basically identical; Difference is in ought not need considering actual laser capacitive load characteristic; Fashionable in adding of proportional feedback link, can directly load the proportional control feedback signal in laser end, other signals transmission is with first kind of implementation method unanimity.
Described first frequency shifter, second frequency shifter and the 3rd frequency shifter are acousto-optic frequency shifters or optical phase modulator.The described first modulation frequency shifter, the second modulation frequency shifter and the 3rd frequency shifter are acousto-optic frequency shifters or optical phase modulator.Described optical resonator is optical fibre device or integrated optical device.The structure of described optical resonator is transmission-type optical resonator or reflective optic resonator cavity.
Claims (9)
1. resonance type optical gyroscope based on servo loop closed loop lock-in techniques; It is characterized in that comprising the optical system that constitutes by tunable laser, optical splitters, first frequency shifter, second frequency shifter, the 3rd frequency shifter, first modulator, second modulator, optical resonator, photoelectric conversion module, and the treatment circuit that constitutes by modulation module, proportional integral feedback module, proportional control feedback module and high order integral feedback module; Tunable laser, the 3rd frequency shifter, optical splitters, first frequency shifter, first modulator, optical resonator, photoelectric conversion module, modulation module, proportional control feedback module link to each other in order; The proportional control feedback module links to each other with the 3rd frequency shifter; Laser instrument proportional integral feedback module, high order integral feedback module respectively links to each other; Optical splitters links to each other with second frequency shifter, second modulator, optical resonator in order; The modulation module links to each other with the proportional integral feedback module, and the modulation module links to each other with high order integral feedback module.
2. resonance type optical gyroscope based on servo loop closed loop lock-in techniques; It is characterized in that comprising the optical system that constitutes by tunable laser, optical splitters, first modulator, second modulator, first frequency shifter, second frequency shifter, the 3rd frequency shifter, optical resonator, photoelectric conversion module; And the treatment circuit that constitutes by modulation module, proportional control feedback module, proportional integral feedback module and high order integral feedback module; Tunable laser links to each other with the 3rd frequency shifter, optical splitters, first modulator, first frequency shifter, optical resonator, photoelectric conversion module, modulation module, proportional control feedback module in order; Laser instrument links to each other with high order integral feedback module with the proportional integral feedback module respectively; Optical splitters links to each other with second modulator, second frequency shifter, optical resonator in order; The modulation module links to each other with proportional control feedback module, the 3rd frequency shifter in order; The modulation module links to each other with proportional integral feedback module, laser instrument in order, and the modulation module links to each other with high order integral feedback module, laser instrument in order.
3. resonance type optical gyroscope based on servo loop closed loop lock-in techniques; It is characterized in that comprising the optical system that constitutes by tunable laser, the 3rd frequency shifter, modulator, optical splitters, first frequency shifter, second frequency shifter, optical resonator, photoelectric conversion module; And the treatment circuit that constitutes by modulation module, proportional control feedback module, proportional integral feedback module and high order integral feedback module; Tunable laser links to each other with modulator, the 3rd frequency shifter, optical splitters, first frequency shifter, optical resonator, photoelectric conversion module, modulation module, proportional control feedback module in order; Proportional control feedback module and the 3rd frequency shifter; Optical splitters links to each other with second frequency shifter, optical resonator in order; The modulation module links to each other with proportional integral feedback module, laser instrument in order, and the modulation module links to each other with high order integral feedback module, laser instrument device in order.
4. resonance type optical gyroscope based on servo loop closed loop lock-in techniques; It is characterized in that comprising the optical system that constitutes by tunable laser, optical splitters, the first modulation frequency shifter, the second modulation frequency shifter, the 3rd frequency shifter, optical resonator, photoelectric conversion module; And the treatment circuit that constitutes by modulation module, proportional control feedback module, proportional integral feedback module and high order integral feedback module; Tunable laser links to each other with the 3rd frequency shifter, optical splitters, the first modulation frequency shifter, optical resonator, photoelectric conversion module, modulation module, proportional control feedback module in order; The proportional control feedback module links to each other with the 3rd frequency shifter; Optical splitters links to each other with the second modulation frequency shifter, optical resonator in order; The modulation module links to each other with proportional integral feedback module, laser instrument in order, and the modulation module links to each other with high order integral feedback module, laser instrument in order.
5. resonance type optical gyroscope based on servo loop closed loop lock-in techniques; It is characterized in that comprising the optical system that constitutes by tunable laser, optical splitters, the first modulation frequency shifter, the second modulation frequency shifter, optical resonator, photoelectric conversion module; And the treatment circuit that constitutes by modulation module, proportional control feedback module, proportional integral feedback module and high order integral feedback module; Tunable laser links to each other with optical splitters, the first modulation frequency shifter, optical resonator, photoelectric conversion module, modulation module, proportional control feedback module in order; The proportional control feedback module links to each other with tunable laser; Optical splitters links to each other with the second modulation frequency shifter, optical resonator in order; The modulation module links to each other with proportional integral feedback module, laser instrument in order, and the modulation module links to each other with high order integral feedback module, laser instrument in order.
6. according to the resonance type optical gyroscope of claim 1,2 or 3 described a kind of servo loop closed loop lock-in techniques, it is characterized in that described first frequency shifter, second frequency shifter and the 3rd frequency shifter are acousto-optic frequency shifters or optical phase modulator.
7. the resonance type optical gyroscope of a kind of servo loop closed loop lock-in techniques according to claim 4 is characterized in that the described first modulation frequency shifter, the second modulation frequency shifter and the 3rd frequency shifter are acousto-optic frequency shifters or optical phase modulator.
8. according to claim 1,2,3,4 or 5 described a kind of resonance type optical gyroscopes, it is characterized in that described optical resonator is optical fibre device or integrated optical device based on servo loop closed loop lock-in techniques.
9. according to claim 1,2,3,4 or 5 described a kind of resonance type optical gyroscopes based on servo loop closed loop lock-in techniques, the structure that it is characterized in that described optical resonator is transmission-type optical resonator or reflective optic resonator cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110410722.0A CN102519446B (en) | 2011-12-12 | 2011-12-12 | Resonant optical gyroscope based on fast-speed high-precision frequency tracking and locking technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110410722.0A CN102519446B (en) | 2011-12-12 | 2011-12-12 | Resonant optical gyroscope based on fast-speed high-precision frequency tracking and locking technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102519446A true CN102519446A (en) | 2012-06-27 |
| CN102519446B CN102519446B (en) | 2014-05-07 |
Family
ID=46290449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110410722.0A Active CN102519446B (en) | 2011-12-12 | 2011-12-12 | Resonant optical gyroscope based on fast-speed high-precision frequency tracking and locking technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102519446B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818695A (en) * | 2012-08-03 | 2012-12-12 | 无锡联河光子技术有限公司 | Accurate measurement device for optical resonance frequency difference and method thereof |
| CN102997859A (en) * | 2012-10-17 | 2013-03-27 | 无锡联河光子技术有限公司 | High-resolution large-range optical fiber strain sensor and probe thereof |
| CN107345811A (en) * | 2016-04-06 | 2017-11-14 | 泰勒斯公司 | The frequency resonant optical mode gyroscope of compact three |
| CN108984006A (en) * | 2017-06-01 | 2018-12-11 | 罗技欧洲公司 | Clocktunable for wireless charging system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101067556A (en) * | 2007-06-01 | 2007-11-07 | 哈尔滨工程大学 | Four-frequency differential Brillouin optical fiber gyroscope |
| CN101216314A (en) * | 2008-01-14 | 2008-07-09 | 浙江大学 | Resonance type optical gyroscope digital closed loop system frequency feedback and tracking locking apparatus and method |
| CN101614545A (en) * | 2007-10-23 | 2009-12-30 | 浙江大学 | Resonance type optical fiber gyro signal detecting device based on coordinate rotation digital computer algorithm |
-
2011
- 2011-12-12 CN CN201110410722.0A patent/CN102519446B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101067556A (en) * | 2007-06-01 | 2007-11-07 | 哈尔滨工程大学 | Four-frequency differential Brillouin optical fiber gyroscope |
| CN101614545A (en) * | 2007-10-23 | 2009-12-30 | 浙江大学 | Resonance type optical fiber gyro signal detecting device based on coordinate rotation digital computer algorithm |
| CN101216314A (en) * | 2008-01-14 | 2008-07-09 | 浙江大学 | Resonance type optical gyroscope digital closed loop system frequency feedback and tracking locking apparatus and method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818695A (en) * | 2012-08-03 | 2012-12-12 | 无锡联河光子技术有限公司 | Accurate measurement device for optical resonance frequency difference and method thereof |
| CN102997859A (en) * | 2012-10-17 | 2013-03-27 | 无锡联河光子技术有限公司 | High-resolution large-range optical fiber strain sensor and probe thereof |
| CN107345811A (en) * | 2016-04-06 | 2017-11-14 | 泰勒斯公司 | The frequency resonant optical mode gyroscope of compact three |
| CN108984006A (en) * | 2017-06-01 | 2018-12-11 | 罗技欧洲公司 | Clocktunable for wireless charging system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102519446B (en) | 2014-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102353373A (en) | Double-closed loop locking technology-based resonant optical gyro | |
| Ma et al. | Reduction of optical Kerr-effect induced error in a resonant micro-optic gyro by light-intensity feedback technique | |
| CN102331258B (en) | Two-path loop-locked resonant mode optical gyro | |
| CN103438882B (en) | A kind of optical fibre gyro of low scale factor error | |
| CN107084713B (en) | Method for measuring angular velocity and device based on optical-electronic oscillator | |
| CN112710294B (en) | Low-optical-noise double-ring parallel resonant gyro system and method | |
| CN110470292B (en) | Self-injection frequency-locking resonant optical gyroscope and working method thereof | |
| CN109357672B (en) | Two-way optical carrier microwave resonance system based on circulator structure and method for detecting angular velocity of two-way optical carrier microwave resonance system | |
| Lei et al. | Current modulation technique used in resonator micro-optic gyro | |
| CN103697880A (en) | Fiber-optic gyroscope with low random walk coefficient | |
| CN102519445A (en) | Resonance optic gyro based on digital phase oblique wave frequency shift technology | |
| CN110319828A (en) | A kind of the resonance type optical fiber gyro system and its signal detecting method of bicyclic cavity configuration | |
| CN102519446B (en) | Resonant optical gyroscope based on fast-speed high-precision frequency tracking and locking technology | |
| CN111238464B (en) | Detection method of resonant optical gyroscope based on reciprocity modulation and time division switching | |
| Li et al. | Test and analysis of the optical Kerr-effect in resonant micro-optic gyros | |
| Ma et al. | Full investigation of the resonant frequency servo loop for resonator fiber-optic gyro | |
| CN109104247A (en) | The steady phase Transmission system of broadband signal based on microwave photon link | |
| Zhi et al. | Low-delay, high-bandwidth frequency-locking loop of resonator integrated optic gyro with triangular phase modulation | |
| CN103278150A (en) | Optical carrier microwave gyroscopic method for detecting angular velocity | |
| CN103712615A (en) | Single closed-loop resonant optic gyro with optical power feedback function | |
| Lei et al. | Effect of intensity variation of laser in resonator integrated optic gyro | |
| CN115112111A (en) | Single-beam wide-spectrum light source secondary filtering resonant fiber optic gyroscope and closed-loop control method | |
| CN114993281A (en) | Full-digital closed-loop angular velocity detection system and method based on low coherent light | |
| CN103267522B (en) | The two-way frequency locking switching method of microwave gyroscope irreplaceable error is carried for eliminating light | |
| Zhu et al. | Combined frequency-locking technology of a digital integrated resonator optic gyroscope with a phase-modulated feedback loop |
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 |