CN103604431A - Strapdown compass system based on triaxial integrated high-precision optic fiber gyroscope - Google Patents
Strapdown compass system based on triaxial integrated high-precision optic fiber gyroscope Download PDFInfo
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- CN103604431A CN103604431A CN201310591392.9A CN201310591392A CN103604431A CN 103604431 A CN103604431 A CN 103604431A CN 201310591392 A CN201310591392 A CN 201310591392A CN 103604431 A CN103604431 A CN 103604431A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/10—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration
- G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
- G01C21/16—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
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Abstract
The invention relates to a strapdown compass system based on a triaxial integrated high-precision optic fiber gyroscope. The system consists of three components, namely a box, optic fiber gyroscope IMU (Inertial Measurement Unit) components and system circuit components, wherein the box is composed of a bottom plate and an outer housing; the bottom plate includes an inertial area and a circuit area, in which the optic fiber gyroscope IMU components and the system circuit components are contained respectively; the optic fiber gyroscope IMU components and the system circuit components are electrically connected by electric connectors. The invention adopts a modular integrated design, focuses on increasing the adaptivity and engineering property of the system, and successfully overcomes the problem that the service performance of the system is poor due to the large size, large weight, poor temperature performance, low consistency, complicated structure and the like of a platform gyrocompass, and the precision of the system is increased by optimizing a strapdown compass algorithm. The strapdown compass system has good practical value and broad application prospects in the technical field of inertia.
Description
Technical field:
The present invention relates to a kind of strapdown compass system based on three-axis integrative high precision fiber optic gyro, belong to inertial navigation technology field.
Background technology:
Compass system is a kind of accurate complicated navigation instrument, can not only for the big-and-middle-sized water surface and under water the systems such as navigation, defense preparations, charge on naval vessel accurate course and horizontal reference information are provided, can also show ship gesture angle and reckoning berth.Platform compass is general installs two rate gyroscopes or three single-degree-of-freedom gyroscopies, and two electromagnetic pendulums or two accelerometers, forms leveling and looks for northern loop, sets up three shaft space stable platforms and follows the tracks of sky, northeast geographic coordinate system.Owing to adopting mechanical type platform structure, platform compass system exists that complex structure, volume are large, Heavy Weight, price are high, and reliability is difficult to the problems such as further raising.
Three-axis integrative optical fibre gyro is the Gyroscope Design all-in-one-piece optical fibre gyro of three orthogonal directionss during by inertial navigation, again comprehensive Design is carried out in the aspects such as light path, circuit and structure simultaneously, not only save equipment volume, and reduce costs, there is simple in structure, easy processing, cost is low, volume is little, lightweight, start the advantages such as fast, strong shock resistance, dynamic range are large.
Strapdown compass system is directly installed on inertia sensitive element (gyro, accelerometer) on carrier, and gyroscope is no longer by the isolation that rotatablely moves of paralell and carrier, but completely and bearer synchronization move.In computing machine, with direction cosine matrix, realize the function of navigation platform, with " mathematical platform ", replace the entity mechanical platform in conventional platform-type compass system, owing to having saved complicated electromechanical navigation platform, overcome the shortcomings of platform compass system.
Therefore, it is high that the strapdown compass system based on optical fibre gyro has dynamic accuracy, auto-alignment, and stabilization time is short, and reliability is high, and compact conformation is lightweight, low in energy consumption, and the advantages such as Maintenance free are the important research directions of ship navigation technology.
Summary of the invention:
(1) object:
The object of this invention is to provide a kind of strapdown compass system based on three-axis integrative high precision fiber optic gyro, it adopts three-axis integrative high precision fiber optic gyro is inertia sensitive element, the difficult problems such as the volume that overcome platform compass is large, complex structure, impact resistance are weak, expensive, environmental suitability and the actual usability of system have been improved emphatically, reduced system start-up time, simplify Assembling Production technique, guaranteed reliability and the maintenanceability of system.The present invention has improved the Alignment Algorithm of strapdown compass system, realizes the fast and accuracy alignment under the different conditions such as carrier moored condition, anchored condition and maneuvering condition; Design and Implement the in good time switching of compass state and inertial navigation state, shortened the initial alignment time, reduced lateral error and the course error of compass system.
(2) technical scheme:
The present invention is a kind of strapdown compass system based on three-axis integrative high precision fiber optic gyro, sees Fig. 1, and it is comprised of casing, optical fibre gyro IMU assembly and circuit system assembly three parts.Position annexation between them is: casing, for splendid attire and protection optical fibre gyro IMU assembly and circuit system assembly, is divided into Guan Zu district and circuit region.Wherein ，Guan Zu district is used for placing optical fibre gyro IMU assembly, comprises three-axis integrative optical fibre gyro, accelerometer, and IMU stage body, puts assembly etc. before light source; Circuit region, for place system circuit unit, comprises Universal Power, accelerometer I/F treatment circuit plate, navigation calculation plate, gyro treatment circuit plate, motherboard etc.Casing front end has three outside electric connectors, for this compass system power supply and communication.Between Guan Zu district and circuit region, by outside electric connector, complete electrical connection, upper cover and coupling bolt by casing all seal casing.
Described casing, is shown in Fig. 2 (a), Fig. 2 (b), is divided into base plate and outer cover two parts.This box bottom is long rectangular flat structure, can at utmost reduce the difficulty of processing, for installing optical fibres gyro IMU assembly and circuit system assembly and whole compass system is installed.The upper surface of base plate is processed with installation base and the screw hole for mounting circuit support, optical fibre gyro IMU system component, motherboard etc., uniform four the casing mounting flanges in lower long edge of base plate, the horizontal reference for installation of whole compass system is provided, lower minor face edge at base plate provides two casing sides by face, has formed the directed benchmark of whole compass system.This tank skirt is the structure of rectangular box body, welding manner machine-shaping.In the front portion of outer cover, be processed with 3 socket mounting holes through walls, at the position, composition surface with base plate, be provided with inner flange, improve on the one hand the rigidity of whole outer cover, the machining position of gib screw is also provided in addition, be conducive to sealing simultaneously.Outer cover is anterior installs three outside electric connectors, model respectively: YMA27S4M1D40, YMA27S12M1D40 and YMA27S26M1D40, its disk end is positioned at the outside of outer cover, for power supply and communication.Consider the electromagnetic interference (EMI) phenomenon between circuit system and gyro, circuit region is placed on base plate front portion, and this circuit region is provided with circuit carriers installed surface and motherboard installed surface, is respectively used to mounting circuit support and system board.Shi Guanzu district, base plate rear portion, is provided with IMU installed surface, IMU and puts assembly fixed orifice before by face, light source.IMU installed surface and IMU provide horizontal and vertical reference for installation by face for installing optical fibres gyro IMU assembly, put assembly fixed orifice light source is locked on cabinet before light source.Casing surrounding is evenly equipped with mounting flange, configures register pin and mounting hole on mounting flange.Before casing, all processed seal groove above, for placing O-ring seal, after front panel and top cover install, can play good sealing effectiveness.Between Guan Zu district and circuit region, adopt electric connector to be connected, all electrical connection, has simplified system production, assembly technology, has improved system reliability and maintenanceability.
Described circuit system assembly, refers to the navigation calculation plate, accelerometer I/F treatment circuit plate, gyro treatment circuit plate, motherboard and the Universal Power that are arranged in circuit region.Position annexation between them is: navigation calculation plate, accelerometer I/F treatment circuit plate, gyro treatment circuit plate are realized electrical connection and are connected with the motherboard that is fixedly installed on bottom half with the CMI96ZJN socket on motherboard by CMI96TKW bend cutting rectangular electric connector, are convenient to assembling and maintenance.Navigation calculation plate, accelerometer I/F treatment circuit plate, gyro treatment circuit plate have unified physical dimension, version and mounting interface, cover heat conduction box outward, utilize the locking strip of side to be fixed in circuit carriers.Take gyro treatment circuit as example, see Fig. 3, comprised gyro treatment circuit plate, heat conduction box, locking strip, CMI96TKW bend cutting rectangular electric connector.Motherboard is fixed on the installation base on base plate, and its side near optical fibre gyro IMU system component is welded direct insertion socket J30J-31ZKNP5 and J30J-37ZKNP5, for realizing the electrical connection with optical fibre gyro IMU system component; Motherboard provides pad near a side of outside electric connector, welding habitat female connector YMA27T4K1P40, YMA27T12K1P40 and YMA27T26K1P40.This circuit carriers is the framed structure of a box, fixed orifice and mounting flange by bottom are fixed on base plate, and its inside is processed with chute, for fixing said system circuit unit, the heating of circuit is transmitted to external environment condition, its basic profile is shown in Fig. 4 simultaneously.From front end, each circuit board is followed successively by Universal Power, navigation calculation plate, accelerometer I/F treatment circuit plate, gyro treatment circuit plate, be furnished with like this assembling of the system of being beneficial to, avoided the impact on optical fibre gyro sensing ring and accelerometer gauge outfit of heat that Universal Power produces.
Described optical fibre gyro IMU assembly, see that Fig. 5 (a), (b) adopt the small-sized optical fibre gyro of three-axis integrative high precision, comprise an IMU stage body, three optical fibre gyro sensing rings, put assembly before three accelerometer gauge outfits and a light source being fixed on base plate.Three optical fibre gyro sensing rings share same light source, adopt the Φ 80 thin footpath of μ m optical fiber coilings, have reduced the weight and volume of compass system.Gyro light source is fixed on cabinet sidewall by locking strip, and convenient heat radiation, has weakened the impact of heat of light source on optical fibre gyro sensing ring and accelerometer gauge outfit.Optical fibre gyro IMU assembly adopts double-deck magnetic shielding design, adopts the IMU stage body of diagonal angle, space vibration damping layout effectively to guarantee that optical fibre gyro IMU assembly has good isotropy dynamic response feature under vibration, impact condition, has improved the vibration performance of system.(this optical fibre gyro IMU assembly previously existing patent is applied for separately, no longer describes in detail here).
Principle of work of the present invention and workflow brief introduction are as follows:
The three-axis integrative optical fibre gyro treatment circuit plate of circuit region, accelerometer I/F treatment circuit plate, navigation calculation plate, Universal Power have connected electric signal by motherboard and have exchanged, and the mutual electric signal exchanges such as the optical fibre gyro sensing unit on above circuit board and IMU stage body (containing front amplifying board), light source module (containing driving circuit), accelerometer, temperature sensor (18B20) realize by two electric connectors on motherboard and IMU body.The power supply of system and data communication realize by three outside electric connectors on motherboard.The angular motion of three axis optical fibre gyro sensitive carrier sensory perceptual system, angular velocity information is exported by RS422 serial ports by agreement through gyro mainboard.Three axle quartz flexible accelerometer sensitive carrier sensory perceptual system acceleration informations, its output is directly proportional to system acceleration, by accelerometer I/F treatment circuit plate, carries out acquisition and processing, exports three road pulse signals.Accelerometer built-in temperature sensor, the temperature signal output of its measurement, by the 0/1 digital quantity string code forming, can directly be gathered by digital interface circuit.Navigation calculation plate completes and gathers gyro information, accelerometer information and temperature information, thereby carries out the functions such as temperature compensation, navigation calculation, integrated navigation and communication.Universal Power converts outside input power to various forms voltage that internal system needs, also plays the functions such as filtering, voltage stabilizing, overcurrent protection simultaneously.
(3) advantage and effect:
The present invention is a kind of strapdown compass system based on three-axis integrative high precision fiber optic gyro, changes in the past traditional method for designing, by the integrated module comprehensive integration of inertia device and system, has overcome the shortcomings of platform compass; The treatment circuit, the optimization compass algorithm that have improved compass system have improved course, the horizontal accuracy of compass system, and have reduced start-up time when subtracting body loss of weight, have shortened the aligning time.Specific implementation following advantage:
1, optimized the integral layout of system, realization is connected entirely, small-sized design, for compass system subtracts body loss of weight.
2, adopt modularization idea, guarantee that module interchangeability is high, simplified system assembling and production technology, improved reliability and the maintenanceability of system.
3, rational deployment circuit part, has reduced the interference of pyromagnetic shake to system; Improve algorithm, making compass system course angle precision is 10'sec Φ, and pitch angle precision is 0.02 °, and roll angle error is 0.02 °, and under moored condition, the initial alignment time is less than 30min, and under anchored condition, the initial alignment time is less than 60min, is less than 30s start-up time.
Accompanying drawing explanation:
Fig. 1 is the anterior half section stereographic map of the present invention
Fig. 2 (a) is the base plate of casing of the present invention
Fig. 2 (b) is the outer cover of casing of the present invention
Fig. 3 is gyro treatment circuit structural representation of the present invention
Fig. 4 is the basic block diagram of circuit carriers of the present invention
Fig. 5 (a) is optical fibre gyro IMU assembly stereographic map of the present invention
Fig. 5 (b) is optical fibre gyro IMU assembly stereographic map of the present invention
In figure, symbol description is as follows:
1. casing 2. outer cover 3. base plates
4. circuit carriers 5. motherboard 6. accelerometers
7. before light source, put assembly 8. optical fibre gyro IMU assembly 9. optical fibre gyro sensing rings
10. circuit system assembly 11. accelerometer I/F process electric 12. navigation calculation plates
Road plate
The outside electric connector 15. casing mounting flanges of 13. Universal Power 14.
16. motherboard installed surface 17. casing sides are leaned on face by face 18.IMU
Before 19. light sources, put assembly fixed orifice 20.IMU installed surface 21. circuit carriers installed surfaces
22. socket mounting hole 23 inner flanges through walls
The 301.CMI96TKW bend cutting rectangle 302. locking strip 303. gyro treatment circuit plates that are electrically connected
Connect device
304. heat conduction boxes
401. fixed orifice 402. mounting flange 403. chutes
501.IMU stage body mounting hole 502.IMU stage body
Embodiment:
See Fig. 1, the present invention is a kind of strapdown compass system based on three-axis integrative high precision fiber optic gyro, and it is by casing 1(outer cover 2 and base plate 3), optical fibre gyro IMU assembly 8 and circuit system assembly 10 3 parts form.Position annexation between them is: optical fibre gyro IMU assembly 8 is positioned over base plate 3 Guan Zu districts, and circuit system assembly 10 is positioned over the circuit region of base plate 3, and optical fibre gyro IMU assembly 8 and circuit system assembly 10 are electrically connected by electric connector.There is socket mounting hole 22 through walls outer cover 2 front portions, and for placing outside electric connector 14, outer cover 2 is arranged on base plate 3 by screw.
Described casing 1 is divided into base plate 2 and outer cover 3 two parts, sees Fig. 2 (a), Fig. 2 (b).Maximum profile 384.5 * 204 * 162mm of this compass system, the box sizes that does not comprise outside electric connector 14 and casing mounting flange 15 is 365 * 170 * 162mm, by four Φ 9 through holes on casing mounting flange 15, use four M8 screws to be fixed, mounting hole spacing is 205 * 188mm, and casing 1 is cuboid.Base plate 3 is divided into ，Guan Zu district, two regions and circuit region, is all electrical connection, has simplified system production, assembly technology, has improved system reliability and maintenanceability.Circuit region is processed with 2 rectangle circuit carriers installed surfaces 21 and 6 motherboard installed surfaces 16, and circuit carriers 4 is arranged on circuit carriers installed surface 21 by screw fastening; Motherboard installed surface 16 is for motherboard 5 is installed, for it provides horizontal reference.Guan Zu district is processed with IMU installed surface 20, IMU is put 20 one-tenth diagonal form formulas distributions of 19,4 IMU installed surfaces of assembly fixed orifice before leaning on face 18, light source, for optical fibre gyro IMU assembly 8 provides horizontal reference; IMU provides vertical reference by face 18 for optical fibre gyro IMU assembly; Before light source, put assembly fixed orifice 19 for being locked at base plate by putting assembly 7 before gyro light source, reduced the impact of light source heating on inertial sensor part.In addition, base plate 3 is processed with casing mounting flange 15 and casing side is leaned on face 17, has guaranteed installation strength, tightly locks compass system.
Described circuit system assembly 10, comprises Universal Power 13, navigation calculation plate 12, accelerometer I/F treatment circuit plate 11, gyro treatment circuit plate 303, motherboard 5 and the circuit carriers 4 of fixing each circuit board.Wherein, Universal Power 13, navigation calculation plate 12, accelerometer I/F treatment circuit plate 11 and gyro treatment circuit plate 303 have unified physical dimension, version and mounting interface, by locking strip 302, be arranged on 403 li of the chutes of circuit carriers 4, then by screw, mounting flange 402 be fastened on the circuit carriers installed surface 21 of base plate 3.Motherboard 5 is placed in circuit carriers 4 bottoms, and motherboard 5 is electrically connected each circuit board by electric connector, realizes power supply and communication.The gyro treatment circuit plate 303 of take in Fig. 3 is example, the front of this circuit board is coated with heat conduction box 304, being convenient to heat derives, and reverse side is fixed by locking strip 302 and circuit carriers 4 sidewalls, and bottom is installed CMI96TKW bend cutting rectangular electric connector 301 and is electrically connected with motherboard 5.Optical fibre gyro circuit is divided into two parts, electric discharge road and gyro treatment circuit plate 303 before sensing ring.Before sensing ring, put circuit board and be integrated in optical fibre gyro IMU assembly 8, be positioned over Guan Zu district, light path is separated with circuit, reduced electromagnetic interference (EMI), improved system reliability and maintenanceability.Consider the problem of heating, gyro treatment circuit plate 303 is positioned in circuit region, the impact of the heat of avoiding its generation on optical fibre gyro sensing ring 9 and accelerometer 6 gauge outfits.Universal Power 13 is arranged in circuit carriers 4 foremost, with power supply lid, encapsulates, and prevents the interference of Universal Power 13 to other treatment circuit, and adjacent circuit carriers 4 is conducive to the heat that Universal Power 13 produces and diffuses to external environment condition.Fig. 4 is the basic block diagram of circuit carriers 4, this circuit carriers 4 is framed structures of a box, fixed orifice 401 and mounting flange 402 by bottom are fixed on base plate 3, its inside is processed with chute 403, for fixed system circuit unit 10, the heating of circuit is transmitted to external environment condition simultaneously.
Described optical fibre gyro IMU assembly 8, see Fig. 5 (a), Fig. 5 (b), for the light optical fibre gyro of three-axis integrative high precision, comprise an IMU stage body 502,9, three accelerometers 6 of three optical fibre gyro sensing rings, and put assembly 7 before a light source being fixed on base plate 3, this optical fibre gyro IMU assembly 8, by IMU stage body mounting hole 501, is screwed on base plate 3.Three optical fibre gyro sensing rings 9 share a light source, adopt the Φ 80 thin footpath of μ m optical fiber coilings, have effectively reduced the weight and volume of system.Before light source, putting assembly 7, to be close to base plate 3 fixing, accelerated the heat radiation of light source, reduced the impact on optical fibre gyro sensing ring 9 and accelerometer 6 of heat that light source produces.Optical fibre gyro IMU assembly 8 adopts double-deck magnetic shielding design, i.e. optical fibre gyro sensing ring magnetic shielding, in conjunction with the whole magnetic shielding in Guan Zu district, has effectively improved the usability of system.
Claims (1)
1. the strapdown compass system based on three-axis integrative high precision fiber optic gyro, is characterized in that: it is comprised of casing, optical fibre gyro IMU assembly and circuit system assembly three parts; Casing, for splendid attire and protection optical fibre gyro IMU assembly and circuit system assembly, is divided into Guan Zu district and circuit region; Wherein ，Guan Zu district is used for placing optical fibre gyro IMU assembly, comprises three-axis integrative optical fibre gyro, and accelerometer is put assembly before IMU stage body and light source; Circuit region, for place system circuit unit, comprises Universal Power, accelerometer I/F treatment circuit plate, navigation calculation plate, gyro treatment circuit plate and motherboard; Casing front end has three outside electric connectors, for this compass system power supply and communication; Between Guan Zu district and circuit region, by outside electric connector, complete electrical connection, upper cover and coupling bolt by casing all seal casing;
Described casing, is divided into base plate and outer cover two parts; This base plate is long rectangular flat structure, and it at utmost reduces the difficulty of processing, for installing optical fibres gyro IMU assembly and circuit system assembly and whole compass system is installed; The upper surface of base plate is processed with installation base and the screw hole for mounting circuit support, optical fibre gyro IMU system component, motherboard, uniform four the casing mounting flanges in lower long edge of base plate, the horizontal reference for installation of whole compass system is provided, lower minor face edge at base plate provides two casing sides by face, has formed the directed benchmark of whole compass system; This outer cover is the structure of rectangular box body, welding manner machine-shaping; In the front portion of outer cover, be processed with 3 socket mounting holes through walls, at the position, composition surface with base plate, be provided with inner flange, improve on the one hand the rigidity of whole outer cover, the machining position of gib screw is also provided in addition, be conducive to sealing simultaneously; Outer cover is anterior installs three outside electric connectors, model respectively: YMA27S4M1D40, YMA27S12M1D40 and YMA27S26M1D40, its disk end is positioned at the outside of outer cover, for power supply and communication; Consider the electromagnetic interference (EMI) phenomenon between circuit system and gyro, circuit region is placed on base plate front portion, and this circuit region is provided with circuit carriers installed surface and motherboard installed surface, is respectively used to mounting circuit support and system board; Shi Guanzu district, base plate rear portion, is provided with IMU installed surface, IMU and puts assembly fixed orifice before by face and light source; IMU installed surface and IMU provide horizontal and vertical reference for installation by face for installing optical fibres gyro IMU assembly, put assembly fixed orifice light source is locked on cabinet before light source; Casing surrounding is evenly equipped with mounting flange, configures register pin and mounting hole on mounting flange; Before casing, all processed seal groove above, for placing O-ring seal, after front panel and top cover install, play good sealing effectiveness; Between Guan Zu district and circuit region, adopt electric connector to be connected, all electrical connection, has simplified system production, assembly technology, has improved system reliability and maintenanceability;
Described circuit system assembly, refers to the navigation calculation plate, accelerometer I/F treatment circuit plate, gyro treatment circuit plate, motherboard and the Universal Power that are arranged in circuit region; Navigation calculation plate, accelerometer I/F treatment circuit plate, gyro treatment circuit plate are realized electrical connection and are connected with the motherboard that is fixedly installed on bottom half with the CMI96ZJN socket on motherboard by CMI96TKW bend cutting rectangular electric connector, are convenient to assembling and maintenance; Navigation calculation plate, accelerometer I/F treatment circuit plate, gyro treatment circuit plate have unified physical dimension, version and mounting interface, cover heat conduction box outward, utilize the locking strip of side to be fixed in circuit carriers; Take gyro treatment circuit as example, comprised gyro treatment circuit plate, heat conduction box, locking strip, CMI96TKW bend cutting rectangular electric connector; Motherboard is fixed on the installation base on base plate, and its side near optical fibre gyro IMU system component is welded direct insertion socket J30J-31ZKNP5 and J30J-37ZKNP5, for realizing the electrical connection with optical fibre gyro IMU system component; Motherboard provides pad near a side of outside electric connector, welding habitat female connector YMA27T4K1P40, YMA27T12K1P40 and YMA27T26K1P40; This circuit carriers is the framed structure of a box, and fixed orifice and mounting flange by bottom are fixed on base plate, and its inside is processed with chute, for fixing said system circuit unit, the heating of circuit is transmitted to external environment condition simultaneously; From front end, each circuit board is followed successively by Universal Power, navigation calculation plate, accelerometer I/F treatment circuit plate, gyro treatment circuit plate, be furnished with like this assembling of the system of being beneficial to, avoided the impact on optical fibre gyro sensing ring and accelerometer gauge outfit of heat that Universal Power produces;
Described optical fibre gyro IMU assembly, adopts the small-sized optical fibre gyro of three-axis integrative high precision, comprises an IMU stage body, and three optical fibre gyro sensing rings, put assembly before three accelerometer gauge outfits and a light source being fixed on base plate; Three optical fibre gyro sensing rings share same light source, adopt the Φ 80 thin footpath of μ m optical fiber coilings, have reduced the weight and volume of compass system; Gyro light source is fixed on cabinet sidewall by locking strip, and convenient heat radiation, has weakened the impact of heat of light source on optical fibre gyro sensing ring and accelerometer gauge outfit; Optical fibre gyro IMU assembly adopts double-deck magnetic shielding design, adopts the IMU stage body of diagonal angle, space vibration damping layout effectively to guarantee that optical fibre gyro IMU assembly has good isotropy dynamic response feature under vibration, impact condition, has improved the vibration performance of system.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403212A (en) * | 2015-12-07 | 2016-03-16 | 北京航天时代光电科技有限公司 | Triaxial optical fiber gyro structure taking eight-point vibration reduction and accelerometer heat-insulation measures |
| CN105674983A (en) * | 2014-11-20 | 2016-06-15 | 北京自动化控制设备研究所 | Basic modular structure for modular inertial navigation system |
| CN105698791A (en) * | 2016-04-15 | 2016-06-22 | 江西中船航海仪器有限公司 | Laser gyroscopic compass for warships |
| CN106052682A (en) * | 2016-05-13 | 2016-10-26 | 北京航空航天大学 | Mixed inertial navigation system and navigation method |
| CN106771362A (en) * | 2016-12-29 | 2017-05-31 | 北京航天时代光电科技有限公司 | A kind of single shaft, integral type strapdown acceleration measurement device |
| CN110702087A (en) * | 2019-10-27 | 2020-01-17 | 江西中船航海仪器有限公司 | Novel flexible gyrocompass |
| CN110823220A (en) * | 2019-11-07 | 2020-02-21 | 北京航天时代光电科技有限公司 | Triaxial integrated fiber optic gyroscope inertia measuring device |
| CN111156999A (en) * | 2019-12-31 | 2020-05-15 | 中国船舶重工集团公司第七一七研究所 | Integrated inertial navigation system |
| CN111238631A (en) * | 2020-02-10 | 2020-06-05 | 天津大学 | Three-axis micro-vibration real-time online measurement system and method |
| CN112731930A (en) * | 2020-12-23 | 2021-04-30 | 重庆华渝电气集团有限公司 | Cantilever type excavator control system based on inertial navigation unit |
| CN113884092A (en) * | 2021-08-26 | 2022-01-04 | 江苏安航船舶设备有限公司 | Optical fiber compass combined inertial navigation device |
| CN116026303A (en) * | 2023-03-29 | 2023-04-28 | 航天星云(北京)科技有限公司 | Optical fiber gyro circuit board, debugging method, optical fiber gyro and inertial navigation system |
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| 张小跃等: "三轴一体光纤陀螺高精度标定方法", 《北京航空航天大学学报》 * |
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| CN110702087B (en) * | 2019-10-27 | 2023-04-11 | 江西中船航海仪器有限公司 | Novel flexible gyrocompass |
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| CN111156999A (en) * | 2019-12-31 | 2020-05-15 | 中国船舶重工集团公司第七一七研究所 | Integrated inertial navigation system |
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| CN112731930A (en) * | 2020-12-23 | 2021-04-30 | 重庆华渝电气集团有限公司 | Cantilever type excavator control system based on inertial navigation unit |
| CN113884092A (en) * | 2021-08-26 | 2022-01-04 | 江苏安航船舶设备有限公司 | Optical fiber compass combined inertial navigation device |
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Application publication date: 20140226 |