CN103322997A - Multiloop encircled superfluid gyroscopic device - Google Patents

Multiloop encircled superfluid gyroscopic device Download PDF

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CN103322997A
CN103322997A CN2013102157690A CN201310215769A CN103322997A CN 103322997 A CN103322997 A CN 103322997A CN 2013102157690 A CN2013102157690 A CN 2013102157690A CN 201310215769 A CN201310215769 A CN 201310215769A CN 103322997 A CN103322997 A CN 103322997A
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superfluid
around
gyroscope
interferometer
turn
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赵伟
郑睿
刘建业
聂威
谢征
程庆
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Nanjing University of Aeronautics and Astronautics
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Nanjing University of Aeronautics and Astronautics
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Abstract

The invention discloses a multiloop encircled superfluid gyroscopic device and belongs to the technical field of high-precision gyroscopes. The superfluid device comprises a multiloop encircled superfluid interferometer, a temperature control system, a chemical potential energy difference drive system, a displacement detection system and an amplitude locking system. By the adoption of a multiloop encircle technology in a superfluid pipeline, induction area of a superfluid gyro is enlarged, and overall output noise and thermal noise of the superfluid gyro are effectively inhibited. According to the invention, the superfluid gyro is endowed with lower resolution and limiting resolution, and measurement accuracy of the superfluid gyro is raised.

Description

Multi-turn around the superfluid gyroscope device
Technical field
The invention discloses a kind of multi-turn around the superfluid gyroscope device, belong to the technical field of high accuracy gyroscope instrument.
Background technology
Inertial navigation system has and does not rely on external information, also not to the outstanding advantages of outside emittance, is one of gordian technique of all kinds of aircrafts of development, guided missile, naval vessel, robot, the contour performance equipment of weapons.Gyroscope is the core sensor of inertial navigation system, is used for the angular motion in responsive motion carrier relative inertness space, and its precision has conclusive effect to the precision of inertial navigation system.Use the advanced technology of the subjects such as physics, materialogy and electronic technology, improve gyrostatic precision, be the emphasis of inertial navigation system research always.
Based on Sagnac effect, matter wave interference has high sensitivity to rotation, utilizes the matter wave interference can Development of New Generation high accuracy gyroscope instrument.
Superfluid gyroscope is that the matter wave interference formula is gyrostatic a kind of.When the normal direction of the turning axle of angular velocity and the induction area of superfluid gyroscope was consistent, superfluid gyroscope can responsive this angular velocity.The induction area of superfluid gyroscope is that its pipeline encloses formed closed area around 1 at present, is approximately 10cm 2About.According to present induction area, total output noise of superfluid gyroscope is The order of magnitude, thermonoise is The order of magnitude.
Total output noise of superfluid gyroscope has determined its resolution, and thermonoise has determined its limiting resolution.Since the pipeline of superfluid gyroscope can multi-turn around, therefore its induction area can enlarge so, its total output noise and thermonoise can be suppressed, its precision can further improve.
Summary of the invention
The invention provides a kind of multi-turn around the superfluid gyroscope device, it is by adopting the multi-turn loop technique of superfluid pipeline, enlarged the induction area of superfluid gyroscope device, its total output noise and thermonoise have been carried out establishment, superfluid gyroscope device of the present invention has less resolution and limiting resolution simultaneously, has improved its measuring accuracy.
The present invention adopts following technical scheme: a kind of multi-turn around the superfluid gyroscope device, it includes following structure:
Multi-turn around the superfluid interferometer, described multi-turn around the superfluid interferometer be the core parts of sensitive angular, described interferometer comprise superfluid pipeline, film, rare earth metal and the connection of being connected, part without color filling in the described interferometer is full of superfluid, described superfluid is divided into inner chamber and exocoel, described inner chamber by film and a little less than connect and compose, in described exocoel superfluid pipeline multi-turn around, its induction area
Figure 422802DEST_PATH_IMAGE003
Expand as
Figure 157540DEST_PATH_IMAGE004
, wherein
Figure 766376DEST_PATH_IMAGE005
Representative ring is around the number of turns of pipeline,
Figure 674289DEST_PATH_IMAGE006
Expression superfluid pipeline around radius;
Temperature control system, described temperature control system is controlled to be 2.1616K to the superfluid temperature of exocoel to certain value between the 2.1716K, and keeps constant;
Chemical potential energy differential thermal drive system, the poor drive system of described chemical potential energy control multi-turn around the well heater of superfluid interferometer inner chamber, The output of the poor drive system of expression chemical potential energy, then the chemical potential energy of superfluid gyroscope is poor is
Figure 590609DEST_PATH_IMAGE008
, and Scope should satisfy
Figure 336028DEST_PATH_IMAGE010
, wherein For 4The quality of He atom,
Figure 605653DEST_PATH_IMAGE012
Be the viscosity of common fluid composition,
Figure 861185DEST_PATH_IMAGE013
Become the maximal value of shunt volume for flowing through two weak junctions superfluidity,
Figure 376480DEST_PATH_IMAGE014
Volume factor,
Figure 361753DEST_PATH_IMAGE015
Entropy density,
Figure 623843DEST_PATH_IMAGE016
Be the equivalent thermal resistance of conduction heat between the interior exocoel,
Figure 428988DEST_PATH_IMAGE017
,
Figure 482395DEST_PATH_IMAGE018
With
Figure 259858DEST_PATH_IMAGE019
The density that represents respectively superfluid, common fluid composition and superfluidity composition,
Figure 740518DEST_PATH_IMAGE020
,
Displacement detection system, the displacement to film of displacement detection system detects;
Amplitude locking system, described amplitude locking system control described amplitude locking system control multi-turn around the well heater of superfluid interferometer exocoel, in the superfluid interferometer, produce hot phase shift , offset the Sagnac phase shift that angular velocity produces
Figure 787605DEST_PATH_IMAGE023
, so that the superfluid phase shift Keep constant,
Figure 156587DEST_PATH_IMAGE025
The output of expression amplitude locking control system, then hot phase shift is
Figure 551796DEST_PATH_IMAGE026
, wherein
Figure 366168DEST_PATH_IMAGE027
Superfluid gyroscope length,
Figure 126314DEST_PATH_IMAGE028
It is the cross-sectional area around pipeline.
Described multi-turn around total output noise of superfluid gyroscope device
Figure 393347DEST_PATH_IMAGE029
Wherein,
Figure 529931DEST_PATH_IMAGE030
Total output noise of superfluid gyroscope,
Figure 198809DEST_PATH_IMAGE031
Planck's constant,
Figure 192173DEST_PATH_IMAGE032
Film size,
Figure 884186DEST_PATH_IMAGE033
Josephson's frequency,
Figure 886777DEST_PATH_IMAGE034
Two weak asymmetric factors that connect,
Figure 410162DEST_PATH_IMAGE035
Josephson's induction reactance,
Figure 512110DEST_PATH_IMAGE036
To flow through the weak maximum flow that connects,
Figure 753736DEST_PATH_IMAGE037
Total output noise of expression displacement detection system,
Figure 294438DEST_PATH_IMAGE038
It is the survey frequency of superfluid gyroscope.
Described multi-turn around the resolution of superfluid gyroscope device equal described total output noise.
Described multi-turn around the thermonoise of superfluid gyroscope device
Figure 607083DEST_PATH_IMAGE039
Wherein,
Figure 207829DEST_PATH_IMAGE040
The thermonoise of superfluid gyroscope, Boltzmann constant,
Figure 15565DEST_PATH_IMAGE042
The quantity of weak junction micropore.
Described multi-turn around the limiting resolution of superfluid gyroscope device equal described thermonoise.
The present invention has following beneficial effect:
(1) can guarantee that the superfluid gyroscope device has stable duty, when superfluid gyroscope device pipeline be 100 around the number of turns time, its resolution is , limiting resolution is
Figure 957293DEST_PATH_IMAGE044
What (2) in contrast to pipeline is 1 o'clock around the number of turns, and its resolution improves 2 orders of magnitude, and limiting resolution improves 1 order of magnitude, and its precision is effectively improved;
(3) with respect to the optical gyroscope of equal induction area, its resolution exceeds approximately 10 orders of magnitude than optical gyroscope.
Description of drawings
Fig. 1 be multi-turn of the present invention around the structural representation of superfluid gyroscope device.
Fig. 2 be multi-turn of the present invention around the superfluid gyroscope device to the inhibition figure of total output noise.
Fig. 3 be multi-turn of the present invention around the superfluid gyroscope device to the inhibition figure of thermonoise.
Wherein:
1,2-is weak to be connected; 3,4-well heater; The 5-film; The hard interlayer of 6-; The 7-rare earth metal; The 8-pick-up loop; The 9-input coil; The 10-superconducting quantum interference device (SQUID).
Embodiment
Please refer to Fig. 1 and in conjunction with Fig. 2 to shown in Figure 3, multi-turn of the present invention around the superfluid gyroscope device comprise multi-turn around the poor drive system of superfluid interferometer, temperature control system, chemical potential energy, displacement detection system and amplitude locking system.
Multi-turn around the superfluid interferometer be the core parts of sensitive angular.The main composition element of interferometer has: superfluid pipeline, film 5, rare earth metal 7 and the connection 1,2 of being connected.Part without color filling in the interferometer is full of superfluid.Superfluid is divided into inner chamber and exocoel, inner chamber by film 5 and a little less than connect and compose, remainder has consisted of exocoel.
Figure 907932DEST_PATH_IMAGE045
With
Figure 728120DEST_PATH_IMAGE046
Represent respectively two weak superfluid phase differential that connect both sides, so angular velocity vector
Figure 80604DEST_PATH_IMAGE047
With hot phase shift so that
Figure 23152DEST_PATH_IMAGE045
With
Figure 398770DEST_PATH_IMAGE046
Between produce phase shift
Figure 84966DEST_PATH_IMAGE048
(1)
In the formula (1), Expression The Sagnac phase shift that produces,
Figure 492628DEST_PATH_IMAGE052
The hot phase shift that the expression well heater produces,
Figure 819704DEST_PATH_IMAGE053
Be the induction area vector,
Figure 776159DEST_PATH_IMAGE054
, With
Figure 216685DEST_PATH_IMAGE056
The size of vector,
Figure 335950DEST_PATH_IMAGE057
The angle between vector, wherein Direction is that turning axle points to,
Figure 425446DEST_PATH_IMAGE059
Direction is the induction area normal direction,
Figure 929240DEST_PATH_IMAGE060
For 4The quality of He atom, Be Planck's constant.
Under the poor effect of chemical potential energy, Josephson effect occurs in two weak junctions in the superfluidity composition, produces the two-way matter wave
Figure 230908DEST_PATH_IMAGE062
With
Figure 797674DEST_PATH_IMAGE063
, wherein, subscript 1 connects a little less than representing respectively two with being connected,
Figure 919214DEST_PATH_IMAGE064
The maximal value of weak junction flow is flow through in expression, Josephson's frequency,
Figure 382873DEST_PATH_IMAGE066
It is the time.Total matter wave
Figure 179928DEST_PATH_IMAGE067
, its amplitude
Figure 788764DEST_PATH_IMAGE068
With
Figure 634360DEST_PATH_IMAGE069
Between the pass be:
Figure 645042DEST_PATH_IMAGE070
(2)
In the formula (2), ,
Figure 646813DEST_PATH_IMAGE072
Two weak asymmetric factors that connect.
In exocoel superfluid pipeline multi-turn around, its induction area
Figure 358417DEST_PATH_IMAGE073
Expand as:
(3)
In the formula (3),
Figure 300145DEST_PATH_IMAGE075
Representative ring is around the number of turns of pipeline, Expression superfluid pipeline around radius.
Temperature control system is controlled to be 2.1616K to the superfluid temperature of exocoel to certain value between the 2.1716K, and keeps constant.
The poor drive system control heater 3 of chemical potential energy,
Figure 398868DEST_PATH_IMAGE077
The output of the poor drive system of expression chemical potential energy, then the chemical potential energy of superfluid gyroscope is poor is
Figure 56246DEST_PATH_IMAGE078
(4)
In the formula (4), Be the viscosity of common fluid composition, Volume factor, Entropy density,
Figure 267598DEST_PATH_IMAGE082
Be the equivalent thermal resistance of conduction heat between the interior exocoel,
Figure 748258DEST_PATH_IMAGE083
,
Figure 243961DEST_PATH_IMAGE084
With
Figure 835480DEST_PATH_IMAGE085
The density that represents respectively superfluid, common fluid composition and superfluidity composition,
Figure 529766DEST_PATH_IMAGE086
,
Figure 381660DEST_PATH_IMAGE087
The effect of displacement detection system is that the displacement to film detects.In the superfluid interferometer, the surface of film is with a rare earth metal, and this metal can produce magnetic field.When the film change in displacement, the magnetic field between film and the pick-up loop changes.Because electromagnetic induction principle can produce faradic variation in the circuit of pick-up loop, so at this moment input coil can produce the variation of magnetic flux.Superconducting quantum interference device (SQUID) has the ability that detects minimum flux change, can be calculated the variation of film displacement by the output of superconducting quantum interference device (SQUID), can obtain thus film apart from the displacement of its initial position
Figure 161397DEST_PATH_IMAGE088
Right
Figure 556607DEST_PATH_IMAGE088
Carry out Fast Fourier Transform (FFT), calculate Amplitude
Figure 131124DEST_PATH_IMAGE089
, With
Figure 597058DEST_PATH_IMAGE090
The pass be:
(5)
Amplitude locking system control heater 4 produces hot phase shift in the superfluid interferometer
Figure 196983DEST_PATH_IMAGE092
, offset the Sagnac phase shift that angular velocity produces
Figure 951313DEST_PATH_IMAGE093
, so that the superfluid phase shift
Figure 626008DEST_PATH_IMAGE094
Keep constant.
Figure 149393DEST_PATH_IMAGE095
The output of expression amplitude locking control system, then hot phase shift is:
Figure 579237DEST_PATH_IMAGE096
(6)
In the formula (6), The inner length of superfluid interferometer,
Figure 33669DEST_PATH_IMAGE098
It is the cross-sectional area of superfluid pipeline.
Getting signal to noise ratio (S/N ratio) is 1, total output noise of superfluid gyroscope Determined its resolution
Figure 949990DEST_PATH_IMAGE100
, namely
(7)
The thermonoise of superfluid gyroscope
Figure 757726DEST_PATH_IMAGE102
Determined its limiting resolution
Figure 193386DEST_PATH_IMAGE103
, namely
Figure 965033DEST_PATH_IMAGE104
(8)
Figure 915672DEST_PATH_IMAGE105
In the expression superfluid interferometer around the number of turns, total output noise of superfluid gyroscope is:
(9)
In the formula (9),
Figure 88344DEST_PATH_IMAGE107
Total output noise of superfluid gyroscope,
Figure 30892DEST_PATH_IMAGE108
Planck's constant,
Figure 397721DEST_PATH_IMAGE109
Film size,
Figure 818338DEST_PATH_IMAGE110
Josephson's frequency,
Figure 290908DEST_PATH_IMAGE111
Two weak asymmetric factors that connect,
Figure 342040DEST_PATH_IMAGE112
Josephson's induction reactance,
Figure 267271DEST_PATH_IMAGE113
To flow through the weak maximum flow that connects,
Figure 491579DEST_PATH_IMAGE114
Total output noise of expression displacement detection system,
Figure 490759DEST_PATH_IMAGE115
It is the survey frequency of superfluid gyroscope.
The thermonoise of superfluid gyroscope is:
(10)
In the formula (10),
Figure 187637DEST_PATH_IMAGE117
The thermonoise of superfluid gyroscope,
Figure 153319DEST_PATH_IMAGE118
Boltzmann constant,
Figure 334901DEST_PATH_IMAGE119
The quantity of weak junction micropore.
Film size is set
Figure 524574DEST_PATH_IMAGE120
, the angle of angular velocity vector and area vector
Figure 362080DEST_PATH_IMAGE121
, asymmetric factor
Figure 928191DEST_PATH_IMAGE122
, the micropore quantity of weak junction
Figure 229859DEST_PATH_IMAGE123
, the superfluid pipeline around radius
Figure 528116DEST_PATH_IMAGE124
, flow through the weak maximum flow that connects
Figure 915235DEST_PATH_IMAGE125
, the cross-sectional area of superfluid pipeline , superfluid length
Figure DEST_PATH_IMAGE127
, the Measurement bandwidth of superfluid gyroscope
Figure 113316DEST_PATH_IMAGE128
In addition, under the effect of temperature control system, outer cavity temperature Under the effect of the poor drive system of chemical potential energy, chemical potential energy is poor
Figure 848053DEST_PATH_IMAGE130
Under the effect of amplitude locking system, the superfluid phase shift
Figure 456889DEST_PATH_IMAGE131
Arrange the superfluid pipeline around the scope of the number of turns between 1 to 100, multi-turn around superfluid gyroscope to the inhibition of total output noise and thermonoise as shown in Figures 2 and 3.
Among Fig. 2, along with the increase of superfluid pipeline around the number of turns, total output noise is the trend that reduces gradually.The number of turns is 1 o'clock, and total output noise is The number of turns is 100 o'clock, and total output noise is So total output noise has been reduced 2 orders of magnitude.
Among Fig. 3, along with the increase of superfluid pipeline around the number of turns, thermonoise is the trend that reduces gradually.The number of turns is 1 o'clock, and thermonoise is The number of turns is 100 o'clock, and thermonoise is
Figure 543772DEST_PATH_IMAGE135
So thermonoise has been reduced 1 order of magnitude.
In sum, the designed multi-turn of the present invention around the superfluid gyroscope device can carry out establishment to total output noise and thermonoise.When the superfluid gyroscope pipeline be 100 around the number of turns time, its resolution is
Figure 577587DEST_PATH_IMAGE136
, limiting resolution is
Figure 289191DEST_PATH_IMAGE137
What in contrast to pipeline is 1 o'clock around the number of turns, and its resolution improves 2 orders of magnitude, and limiting resolution improves 1 order of magnitude, and its precision is effectively improved.
The above only is preferred implementation of the present invention, should be pointed out that for those skilled in the art, can also make some improvement under the prerequisite that does not break away from the principle of the invention, and these improvement also should be considered as protection scope of the present invention.

Claims (5)

  1. A multi-turn around the superfluid gyroscope device, it is characterized in that: it includes following structure:
    Multi-turn around the superfluid interferometer, described multi-turn around the superfluid interferometer be the core parts of sensitive angular, described interferometer comprise superfluid pipeline, film, rare earth metal and the connection of being connected, part without color filling in the described interferometer is full of superfluid, described superfluid is divided into inner chamber and exocoel, described inner chamber by film and a little less than connect and compose, in described exocoel superfluid pipeline multi-turn around, its induction area
    Figure 526938DEST_PATH_IMAGE001
    Expand as , wherein
    Figure 186906DEST_PATH_IMAGE003
    Representative ring is around the number of turns of pipeline,
    Figure 436622DEST_PATH_IMAGE004
    Expression superfluid pipeline around radius;
    Temperature control system, described temperature control system is controlled to be 2.1616K to the superfluid temperature of exocoel to certain value between the 2.1716K, and keeps constant;
    Chemical potential energy differential thermal drive system, the poor drive system of described chemical potential energy control multi-turn around the well heater of superfluid interferometer inner chamber,
    Figure 359579DEST_PATH_IMAGE005
    The output of the poor drive system of expression chemical potential energy, then the chemical potential energy of superfluid gyroscope is poor is
    Figure 669337DEST_PATH_IMAGE006
    , and
    Figure 740062DEST_PATH_IMAGE007
    Scope should satisfy
    Figure 731151DEST_PATH_IMAGE008
    , wherein
    Figure 570931DEST_PATH_IMAGE009
    For 4The quality of He atom,
    Figure 51591DEST_PATH_IMAGE010
    Be the viscosity of common fluid composition,
    Figure 281715DEST_PATH_IMAGE011
    Become the maximal value of shunt volume for flowing through two weak junctions superfluidity,
    Figure 138813DEST_PATH_IMAGE012
    Volume factor,
    Figure 833100DEST_PATH_IMAGE013
    Entropy density,
    Figure 422344DEST_PATH_IMAGE014
    Be the equivalent thermal resistance of conduction heat between the interior exocoel,
    Figure 467660DEST_PATH_IMAGE015
    ,
    Figure 862870DEST_PATH_IMAGE016
    With
    Figure 349346DEST_PATH_IMAGE017
    The density that represents respectively superfluid, common fluid composition and superfluidity composition,
    Figure 437387DEST_PATH_IMAGE018
    ,
    Figure 704421DEST_PATH_IMAGE019
    Displacement detection system, the displacement to film of displacement detection system detects;
    Amplitude locking system, described amplitude locking system control described amplitude locking system control multi-turn around the well heater of superfluid interferometer exocoel, in the superfluid interferometer, produce hot phase shift
    Figure 838074DEST_PATH_IMAGE020
    , offset the Sagnac phase shift that angular velocity produces
    Figure 241374DEST_PATH_IMAGE021
    , so that the superfluid phase shift
    Figure 500317DEST_PATH_IMAGE022
    Keep constant,
    Figure 192329DEST_PATH_IMAGE023
    The output of expression amplitude locking control system, then hot phase shift is
    Figure 929341DEST_PATH_IMAGE024
    , wherein Superfluid gyroscope length,
    Figure 820254DEST_PATH_IMAGE026
    It is the cross-sectional area around pipeline.
  2. Multi-turn as claimed in claim 1 around the superfluid gyroscope device, it is characterized in that: described multi-turn around total output noise of superfluid gyroscope device
    Figure 796300DEST_PATH_IMAGE027
    Wherein,
    Figure 337003DEST_PATH_IMAGE028
    Total output noise of superfluid gyroscope,
    Figure 980474DEST_PATH_IMAGE029
    Planck's constant, Film size, Josephson's frequency,
    Figure 61059DEST_PATH_IMAGE032
    Two weak asymmetric factors that connect,
    Figure 496720DEST_PATH_IMAGE033
    Josephson's induction reactance,
    Figure 2787DEST_PATH_IMAGE034
    To flow through the weak maximum flow that connects,
    Figure 219005DEST_PATH_IMAGE035
    Total output noise of expression displacement detection system,
    Figure 101511DEST_PATH_IMAGE036
    It is the survey frequency of superfluid gyroscope.
  3. Multi-turn as claimed in claim 2 around the superfluid gyroscope device, it is characterized in that: described multi-turn around the resolution of superfluid gyroscope device equal described total output noise.
  4. Multi-turn as claimed in claim 1 around the superfluid gyroscope device, it is characterized in that: described multi-turn around the thermonoise of superfluid gyroscope device
    Wherein,
    Figure 334226DEST_PATH_IMAGE038
    The thermonoise of superfluid gyroscope,
    Figure 772160DEST_PATH_IMAGE039
    Boltzmann constant,
    Figure 130461DEST_PATH_IMAGE040
    The quantity of weak junction micropore.
  5. Multi-turn as claimed in claim 4 around the superfluid gyroscope device, it is characterized in that: described multi-turn around the limiting resolution of superfluid gyroscope device equal described thermonoise.
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CN103954273A (en) * 2014-03-25 2014-07-30 南京航空航天大学 Superfluid gyroscope apparatus based on pressure phase shift assisting
CN104535058A (en) * 2014-11-25 2015-04-22 中国人民解放军装备学院 Genetic optimization-based superfluid gyroscope control system design method
CN104613953A (en) * 2014-11-25 2015-05-13 中国人民解放军装备学院 Method for improving superfluid gyroscope angular rate measurement accuracy
CN105066982A (en) * 2015-07-27 2015-11-18 中国人民解放军装备学院 Superfluid gyroscope apparatus based on cold atom gas quantum vortex
CN105066981A (en) * 2015-07-27 2015-11-18 中国人民解放军装备学院 Superfluid gyroscope apparatus based on light wave thermal compensation
CN112462085A (en) * 2020-11-17 2021-03-09 吉林大学 Electrochemical fluid gyroscope
CN112963495A (en) * 2021-03-03 2021-06-15 哈尔滨工业大学 Strain gauge and piezoelectric ceramic combined magnetic noise suppression active vibration isolation device

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103954273A (en) * 2014-03-25 2014-07-30 南京航空航天大学 Superfluid gyroscope apparatus based on pressure phase shift assisting
CN103954273B (en) * 2014-03-25 2017-04-12 南京航空航天大学 Superfluid gyroscope apparatus based on pressure phase shift assisting
CN104535058A (en) * 2014-11-25 2015-04-22 中国人民解放军装备学院 Genetic optimization-based superfluid gyroscope control system design method
CN104613953A (en) * 2014-11-25 2015-05-13 中国人民解放军装备学院 Method for improving superfluid gyroscope angular rate measurement accuracy
CN105066982A (en) * 2015-07-27 2015-11-18 中国人民解放军装备学院 Superfluid gyroscope apparatus based on cold atom gas quantum vortex
CN105066981A (en) * 2015-07-27 2015-11-18 中国人民解放军装备学院 Superfluid gyroscope apparatus based on light wave thermal compensation
CN105066981B (en) * 2015-07-27 2017-10-03 中国人民解放军装备学院 A kind of superfluid gyroscope device based on light wave thermal compensation
CN112462085A (en) * 2020-11-17 2021-03-09 吉林大学 Electrochemical fluid gyroscope
CN112963495A (en) * 2021-03-03 2021-06-15 哈尔滨工业大学 Strain gauge and piezoelectric ceramic combined magnetic noise suppression active vibration isolation device

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