CN109188318A - A kind of integrated low noise magnetic screen of SERF magnetic field measuring device and magnetic compensation device - Google Patents
A kind of integrated low noise magnetic screen of SERF magnetic field measuring device and magnetic compensation device Download PDFInfo
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- CN109188318A CN109188318A CN201811075297.2A CN201811075297A CN109188318A CN 109188318 A CN109188318 A CN 109188318A CN 201811075297 A CN201811075297 A CN 201811075297A CN 109188318 A CN109188318 A CN 109188318A
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- low noise
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- measuring device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- G01R33/07—Hall effect devices
- G01R33/072—Constructional adaptation of the sensor to specific applications
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Measuring Magnetic Variables (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a kind of integrated low noise magnetic screens of SERF magnetic field measuring device and magnetic compensation device, zero magnetic environment is needed for the magnetic field measuring device gauge outfit part SERF and its internal components needs to be heated at high temperature, by vacuum, water cooling, active magnetic compensation and low noise magnetic shielding barrel have carried out integrated design, reduce device volume as far as possible, reduce influence of the internal high temperature heating to external air flow and magnetic screen, it simultaneously can be with Active Compensation inside remanent magnetism, influence present invention decreases atom magnetic field measuring device internal heating members high temperature to external environment and magnetic screen, enhance the stability of magnetic screen, cooperation is close between each other, vibration influences small, enhance reliability, save space, zero magnetic environment of a stable low noise is provided for SERF magnetic field measuring device.
Description
Technical field
The present invention relates to a kind of integrated low noise magnetic screens of SERF magnetic field measuring device and magnetic compensation device, belong to magnetic
Shield technology field, especially suitable for SERF magnetic field measuring device, it can also be used in atomic spin inertial measuring unit.
Background technique
The magnetic field measuring device height of hypersensitivity, which relies on, measures locating magnetic field environment, need high-performance magnetic shielding barrel every
It interferes to provide a stable magnetic field environment from external magnetic field.Briefly introduce SERF magnetic field measuring device, SERF magnetic
The measurement sensitivity of field measurement device is limited to innermost layer magnetic shielding material bring magnetic noise, therefore in order to realize sub- winged spy
The magnetic-field measurement sensitivity of magnitude needs to use ferrite shielding bucket as internal layer magnetic screen, and Ferrite Material is with higher
Magnetic conductivity (Ω m of ρ~1), and have higher resistivity relative to the permalloy for being conventionally used to magnetic screen, have after shielding
Lower magnetic noise.But the temperature coefficient of Ferrite Material is larger, and with the variation of temperature, its magnetic conductivity can generate biggish change
Change, then will affect its magnetic shield performance.The gas chamber of SERF atom magnetometer gauge outfit need to be heated to high temperature, easily influence ferrite
Shield the magnetic shield performance of bucket.And traditional magnetic screen and magnetic compensation device or by discrete vacuum system, magnetic shielding barrel, water
The structural stratifications such as cooling system, active magnetic compensation shim coil, active magnetic compensation gradient coil, anti-magnetized coil are independently installed, cause
System structure is complicated, and volume is larger, is easy to produce coupling influence between each other, or lacks some of functions, such as vacuum system
System, water-cooling system, active magnetic compensation gradient coil, temperature feedback etc., lead to the requirement for being difficult to meet system, therefore can be to device
Overall performance impact.
Summary of the invention
The technical problem to be solved by the present invention is the heat for overcoming internal heating members to generate is for magnetic shielding barrel magnetic screen
The influence of performance and ambient enviroment solves the mutual crosstalk between each discrete parts, proposes a kind of SERF magnetic field measuring device
Integrated low noise magnetic screen and magnetic compensation device, reduce atom magnetometer internal heating members high temperature to external environment and magnetic
The influence of shielding enhances the stability of magnetic shielding device, provides the magnetic screen of a stable low noise for atom magnetometer
Environment.
The present invention provides a kind of integrated low noise magnetic screen of SERF magnetic field measuring device and magnetic compensation device, the dresses
It sets including vacuum chamber 1, active magnetic compensation film coil 2, water cooling tube 3, low noise magnetic shielding barrel 4, fixture 5, anti-magnetized coil 6, temperature
Spend sensor 7；Wherein vacuum chamber 1 includes vacuum cavity 11, vacuum light passing pipe 12, vacuum tube 13；Fixture 5 include upper cover 51, under
Bottom 52 and pull rod 53；Vacuum chamber 1 is located at the innermost layer of whole device, provides vacuum environment for inner space；In vacuum cavity 11
Active magnetic compensation film coil 2 is pasted on outer wall, can carry out Active Compensation with internal volume remanent magnetism；Water cooling tube 3 is closely wound
On active magnetic compensation film coil 2, for completely cutting off the heat that the internal heating device placed generates in use；Low noise magnetic cup
Bucket 4 is covered in outermost layer, provides non-magnetic environment for inner space；Whole device is fastened by the fixture 5 with pull rod；Anti-magnetized coil
6 inside and outside aperture in 4 upper and lower covers of fixture and low noise magnetic shielding barrel by being wrapped in low noise magnetic shielding barrel 4, internal cabling
In gap between water cooling tube 3 and low noise magnetic shielding barrel 4；Temperature sensor 7 is closely pasted onto outside low noise acoustic shielding bucket 4
In the middle part of wall, for monitoring 4 temperature of low noise magnetic shielding barrel, temperature control is carried out for feeding back water cooling unit.
A kind of integrated low noise magnetic screen of above-mentioned SERF magnetic field measuring device and magnetic compensation device, vacuum cavity 11
There is provided vacuum environment and support construction for inner space, vacuum light passing pipe 12 for by laser vacuum optical path, vacuum tube are provided
13 external vacuum pump groups.
A kind of integrated low noise magnetic screen of above-mentioned SERF magnetic field measuring device and magnetic compensation device, active magnetic compensation
Film coil 2 is using the flexible coil of FPC flexible circuit board technique production, altogether two groups of coils, including one group of three axis shimming
Coil and one group of three axis gradient coil, are pasted on 11 outer wall of vacuum cavity；Active magnetic compensation film coil 2 connects low noise
Signal generator, by measuring the atom signals of SERF magnetic field measuring device, signal generator driving coil be may be implemented internally
The remanent magnetism of portion's environment carries out closed loop active magnetic compensation, and three axis shim coils are used to compensate internal remanent magnetism, to make internal environment
Magnetic field is as closely as possible to zero, and is compensated using three axis gradient coils to gradient magnetic, can provide biggish magnetic field
Homogeneity range.
A kind of integrated low noise magnetic screen of above-mentioned SERF magnetic field measuring device and magnetic compensation device, water cooling tube 3 are tight
Close to be wrapped on active magnetic compensation film coil 2, helical form is closely wound on it, fills up axial space as far as possible；Outside water cooling tube 3
Connect can temperature control water cooling unit, the thermal energy that the heating element placed generates inside vacuum chamber 1 when using for completely cutting off prevents low noise
4 temperature of magnetic shielding barrel is excessively high；Temperature sensor 7 measures the temperature of low noise magnetic shielding barrel 4, temperature feedback is obtained, to pass through
Water cooling unit, water cooling tube 3 and temperature sensor 7 can realize the closed-loop control of temperature, guarantee low noise magnetic shielding barrel 4 in use process
Middle holding temperature is constant and is in optimum working temperature, enhances the stability of its shield effectiveness.
A kind of integrated low noise magnetic screen of above-mentioned SERF magnetic field measuring device and magnetic compensation device, low noise magnetic cup
The material for covering bucket 4 is Ferrite Material, provides high-performance magnetism shielding for inner space, has lesser magnetic noise, to guarantee
Its shielding properties keeps closed thereon as far as possible in addition to necessary aperture；Anti-magnetized coil 6 passes through 4 upper and lower covers of low noise magnetic shielding barrel
On aperture be wound in low noise magnetic shielding barrel 4, internal cabling is located between the outside of water cooling tube 3 and low noise magnetic shielding barrel 4,
Anti-magnetized coil 6 connects ac eraser in two the end of a thread that outside reserves, and being passed through AC demagnetization electric current can be to low noise magnetic screen
Bucket 4 carries out demagnetization.
A kind of integrated low noise magnetic screen of above-mentioned SERF magnetic field measuring device and magnetic compensation device, used material
Material is non-magnetic material in addition to low noise magnetic shielding barrel 4.
The advantages of the present invention over the prior art are that: traditional low noise magnetic screen and magnetic compensation device or will point
Vertical vacuum system, magnetic shielding barrel, water-cooling system, active magnetic compensation shim coil, active magnetic compensation gradient coil, anti-magnetized coil
Equal structural stratifications are independently installed, cause system structure complicated, and volume is larger, are easy to produce coupling influence between each other, or lack
Weary some of them function, such as vacuum system, water-cooling system, active magnetic compensation gradient coil, temperature feedback, it is of the present invention
The integrated low noise magnetic screen of SERF magnetic field measuring device and magnetic compensation device are institutes required for having comprehensively considered the device
Correlation between functional and each necessary part, by vacuum system, magnetic shielding barrel, water-cooling system, active magnetic compensation
The structures such as shim coil, active magnetic compensation gradient coil, anti-magnetized coil have carried out integrated design, reduce whole device
Volume reduces the mutual coupling influence of each component, enhances the reliability of device；In addition to this, monitoring is also added
The temperature sensor of magnetic shielding barrel temperature feeds back the temperature of practical shielding bucket；And active magnetic bucking coil is used instead
The film coil of FPC flexible circuit board technique manufacture is greatly reduced and accounts for instead of the structure of traditional skeleton wire casing coiling
With volume, and the precision of line position and the orthogonality of three-axle magnetic field are improved away, increases three axis gradient coils, so as to
Active magnetic compensation is carried out to remanent magnetism gradient, obtains bigger field homogeneity area；The placement that anti-magnetized coil is fixed, can be multiple
It reuses；Present invention accomplishes SERF magnetic field measuring devices to all demands of magnetic shielding device, and may be implemented internally
The closed loop active magnetic compensation in portion magnetic field and the closed-loop control of magnetic shielding barrel water cooling temperature, reduce the volume of device, enhance
The reliability of device reduces the mutual crosstalk between each component, for SERF magnetic field measuring device provide one it is stable low
The magnetic screen environment of noise.
Detailed description of the invention
Fig. 1 is the end of integrated the low noise magnetic screen and magnetic compensation device of a kind of SERF magnetic field measuring device of the invention
Face figure.
Fig. 2 is a kind of integrated low noise magnetic screen of SERF magnetic field measuring device of the invention and magnetic compensation device along axis
To sectional view.
Fig. 3 is a kind of integrated low noise magnetic screen of SERF magnetic field measuring device of the invention and magnetic compensation device along diameter
To sectional view.
In figure: 1 vacuum chamber；11 vacuum cavities；12 vacuum light passing pipes；13 vacuum tubes；2 active magnetic compensation film coils；3 water
Cold pipe；4 magnetic shielding barrels；5 fixtures；51 upper covers；52 bottoms；53 pull rods；6 anti-magnetized coils；7 temperature sensors.
Specific embodiment
With reference to the accompanying drawing and specific embodiment further illustrates the present invention.
A kind of integrated low noise magnetic screen of SERF magnetic field measuring device of the present invention and magnetic compensation device, including vacuum chamber
1, active magnetic compensation film coil 2, water cooling tube 3, low noise magnetic shielding barrel 4, fixture 5, anti-magnetized coil 6, temperature sensor 7；Its
Middle vacuum chamber 1 includes vacuum cavity 11, vacuum light passing pipe 12, vacuum tube 13；Fixture 5 includes upper cover 51, bottom 52 and pull rod 53；
Vacuum chamber 1 is located at the innermost layer of whole device, provides vacuum environment for inner space；It is pasted actively on 11 outer wall of vacuum cavity
Magnetic compensation film coil 2 can carry out Active Compensation with internal volume remanent magnetism；It is thin that water cooling tube 3 winds around active magnetic compensation
On film coil 2, for completely cutting off the heat that the internal heating device placed generates in use；Low noise magnetic shielding barrel 4 in outermost layer,
Magnetic screen is provided for inner space；Whole device is fastened by the fixture 5 with pull rod；Anti-magnetized coil 6 passes through fixture and low
Be wrapped in low noise magnetic shielding barrel 4 inside and outside aperture in 4 upper and lower covers of noise magnetic shielding barrel, internal cabling be located at water cooling tube 3 with it is low
In gap between noise magnetic shielding barrel 4；Temperature sensor 7 is closely pasted onto the middle part of 4 outer wall of low noise acoustic shielding bucket, for monitoring
4 temperature of low noise magnetic shielding barrel carries out temperature control for feeding back water cooling unit.
A kind of integrated low noise magnetic screen of SERF magnetic field measuring device and magnetic compensation device, vacuum cavity 11
There is provided vacuum environment and support construction for inner space, vacuum light passing pipe 12 for by laser vacuum optical path, vacuum tube are provided
13 external vacuum pump groups.
A kind of integrated low noise magnetic screen of SERF magnetic field measuring device and magnetic compensation device, active magnetic compensation
Film coil 2 is using the flexible coil of FPC flexible circuit board technique production, altogether two groups of coils, including one group of three axis shimming
Coil and one group of three axis gradient coil, are pasted on 11 outer wall of vacuum cavity；Active magnetic compensation film coil 2 connects low noise
Signal generator, by measuring the atom signals of SERF magnetic field measuring device, signal generator driving coil be may be implemented internally
The remanent magnetism of portion's environment carries out closed loop active magnetic compensation, and three axis shim coils are used to compensate internal remanent magnetism, to make internal environment
Magnetic field is as closely as possible to zero, and is compensated using three axis gradient coils to gradient magnetic, can provide biggish magnetic field
Homogeneity range.
A kind of integrated low noise magnetic screen of SERF magnetic field measuring device and magnetic compensation device, water cooling tube 3 are tight
Close to be wrapped on active magnetic compensation film coil 2, helical form is closely wound on it, fills up axial space as far as possible；Outside water cooling tube 3
Connect can temperature control water cooling unit, the thermal energy that the heating element placed generates inside vacuum chamber 1 when using for completely cutting off prevents low noise
4 temperature of magnetic shielding barrel is excessively high；Temperature sensor 7 measures the temperature of low noise magnetic shielding barrel 4, temperature feedback is obtained, to pass through
Water cooling unit, water cooling tube 3 and temperature sensor 7 can realize the closed-loop control of temperature, guarantee low noise magnetic shielding barrel 4 in use process
Middle holding temperature is constant and is in optimum working temperature, enhances the stability of its shield effectiveness.
A kind of integrated low noise magnetic screen of SERF magnetic field measuring device and magnetic compensation device, low noise magnetic cup
The material for covering bucket 4 is Ferrite Material, provides high-performance magnetism shielding for inner space, has lesser magnetic noise, to guarantee
Its shielding properties keeps closed thereon as far as possible in addition to necessary aperture；Anti-magnetized coil 6 passes through 4 upper and lower covers of low noise magnetic shielding barrel
On aperture be wound in low noise magnetic shielding barrel 4, internal cabling is located between the outside of water cooling tube 3 and low noise magnetic shielding barrel 4,
Anti-magnetized coil 6 connects ac eraser in two the end of a thread that outside reserves, and being passed through AC demagnetization electric current can be to low noise magnetic screen
Bucket 4 carries out demagnetization.
A kind of integrated low noise magnetic screen of SERF magnetic field measuring device and magnetic compensation device, used material
Material is non-magnetic material in addition to low noise magnetic shielding barrel 4.
The content not being described in detail in description of the invention belongs to the prior art well known to professional and technical personnel in the field.
Claims (6)
1. a kind of integrated low noise magnetic screen of SERF magnetic field measuring device and magnetic compensation device, it is characterised in that: the device
Including vacuum chamber (1), active magnetic compensation film coil (2), water cooling tube (3), low noise magnetic shielding barrel (4), fixture (5), demagnetization
Coil (6) and temperature sensor (7)；Wherein vacuum chamber (1) includes vacuum cavity (11), vacuum light passing pipe (12) and vacuum tube
(13)；Fixture (5) includes upper cover (51), bottom (52) and pull rod (53)；Vacuum chamber (1) is located at the innermost layer of whole device, is
Inner space provides vacuum environment；Active magnetic compensation film coil (2) are pasted on vacuum cavity (11) outer wall, it can be to inside
Space remanent magnetism carries out Active Compensation；Water cooling tube (3) is wound around on active magnetic compensation film coil (2), is used for completely cutting off
The heat that the middle internal heating device placed generates；Low noise magnetic shielding barrel (4) provides no magnet ring in outermost layer, for inner space
Border；Whole device is fastened by the fixture (5) with pull rod；Anti-magnetized coil (6) passes through fixture and low noise magnetic shielding barrel (4)
It is wrapped in inside and outside aperture in upper and lower covers on low noise magnetic shielding barrel (4), internal cabling is located at water cooling tube (3) and low noise magnetic screen
In gap between bucket (4)；Temperature sensor (7) is closely pasted onto the middle part of low noise acoustic shielding bucket (4) outer wall, for monitoring low noise
Sound magnetic shielding barrel (4) temperature carries out temperature control for feeding back water cooling unit.
2. a kind of integrated low noise magnetic screen of SERF magnetic field measuring device according to claim 1 and magnetic compensation fill
It sets, it is characterised in that: vacuum cavity (11) provides vacuum environment and support construction for inner space, and vacuum light passing pipe (12) is logical
The laser crossed provides vacuum optical path, vacuum tube (13) external vacuum pump group.
3. a kind of integrated low noise magnetic screen of SERF magnetic field measuring device according to claim 1 and magnetic compensation fill
It sets, it is characterised in that: active magnetic compensation film coil (2) is using the flexible coil of FPC flexible circuit board technique production, altogether
Two groups of coils, including one group of three axis shim coil and one group of three axis gradient coil, are pasted on vacuum cavity (11) outer wall；Actively
Magnetic compensation film coil (2) connects the signal generator of low noise, by measuring the atom signals of SERF magnetic field measuring device, letter
Number generator driving coil may be implemented to carry out closed loop active magnetic compensation to the remanent magnetism of internal environment, and three axis shim coils are for mending
Internal remanent magnetism is repaid, to make internal environment magnetic field be as closely as possible to zero, and using three axis gradient coils to gradient magnetic
It compensates, biggish field homogeneity area can be provided.
4. a kind of integrated low noise magnetic screen of SERF magnetic field measuring device according to claim 1 and magnetic compensation fill
It sets, it is characterised in that: water cooling tube (3) is wound around on active magnetic compensation film coil (2), and helical form closely twines on it
Around filling up axial space as far as possible；Water cooling tube (3) it is external can temperature control water cooling unit, is put inside vacuum chamber (1) when being used for completely cutting off
The thermal energy that the heating element set generates, prevents low noise magnetic shielding barrel (4) temperature excessively high；Temperature sensor (7) measures low noise
The temperature of magnetic shielding barrel (4) obtains temperature feedback, to can be achieved by water cooling unit, water cooling tube (3) and temperature sensor (7)
The closed-loop control of temperature guarantees that low noise magnetic shielding barrel (4) keep temperature constant in use and are in best effort temperature
Degree, enhances the stability of its shield effectiveness.
5. a kind of integrated low noise magnetic screen of SERF magnetic field measuring device according to claim 1 and magnetic compensation fill
It sets, it is characterised in that: the material of low noise magnetic shielding barrel (4) is Ferrite Material, provides high-performance magnetic cup for inner space
It covers, there is lesser magnetic noise as to keep closed as possible in addition to necessary aperture thereon to guarantee its shielding properties；Anti-magnetized coil
(6) it is wound on low noise magnetic shielding barrel (4) by the aperture in low noise magnetic shielding barrel (4) upper and lower covers, internal cabling is located at
On the outside of water cooling tube (3) and between low noise magnetic shielding barrel (4), anti-magnetized coil (6) is exchanged in two the end of a thread connection that outside reserves
Demagnetizer, demagnetization can be carried out to low noise magnetic shielding barrel (4) by being passed through AC demagnetization electric current.
6. a kind of integrated low noise magnetic screen of SERF magnetic field measuring device according to claim 1 and magnetic compensation fill
It sets, it is characterised in that: used material is non-magnetic material in addition to low noise magnetic shielding barrel (4).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811075297.2A CN109188318A (en) | 2018-09-14 | 2018-09-14 | A kind of integrated low noise magnetic screen of SERF magnetic field measuring device and magnetic compensation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811075297.2A CN109188318A (en) | 2018-09-14 | 2018-09-14 | A kind of integrated low noise magnetic screen of SERF magnetic field measuring device and magnetic compensation device |
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| CN109188318A true CN109188318A (en) | 2019-01-11 |
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| CN201811075297.2A Pending CN109188318A (en) | 2018-09-14 | 2018-09-14 | A kind of integrated low noise magnetic screen of SERF magnetic field measuring device and magnetic compensation device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441124A (en) * | 2019-07-24 | 2019-11-12 | 湖南红太阳新能源科技有限公司 | Laser heating device and heating means for atomic spin measurement of magnetic field |
| CN110646749A (en) * | 2019-09-12 | 2020-01-03 | 北京自动化控制设备研究所 | Temperature-adjustable stable field test system of atomic magnetometer |
| CN111014419A (en) * | 2019-12-23 | 2020-04-17 | 华中科技大学 | Device for decoupling electric effect in electromagnetic forming process |
| CN111025198A (en) * | 2019-11-28 | 2020-04-17 | 中国船舶重工集团有限公司第七一0研究所 | Ultra-weak magnetic field standard device |
| CN111609845A (en) * | 2020-05-07 | 2020-09-01 | 北京航空航天大学 | Integrated spin-exchange-free relaxation atomic gyroscope |
| CN111856350A (en) * | 2020-07-09 | 2020-10-30 | 吉林大学 | Non-shielding vector SERF atomic magnetic gradiometer adopting active magnetic field to offset |
| CN112444761A (en) * | 2020-11-06 | 2021-03-05 | 北京航空航天大学 | Design method of octagonal axial shimming coil |
| CN112857354A (en) * | 2021-01-08 | 2021-05-28 | 中国船舶重工集团公司第七0七研究所 | High-stability Faraday modulator for SERF gyroscope |
| CN112982501A (en) * | 2021-03-03 | 2021-06-18 | 哈尔滨工业大学 | Dielectric elastomer active micro-vibration isolation device based on deformation measurement in near-zero magnetic space |
| CN113008155A (en) * | 2021-03-03 | 2021-06-22 | 哈尔滨工业大学 | Fiber grating and piezoelectric ceramic combined magnetic noise suppression active vibration isolation device |
| CN114217248A (en) * | 2021-12-13 | 2022-03-22 | 北京航空航天大学 | Active and passive hybrid magnetic shielding system and design method |
| WO2023088352A1 (en) * | 2021-11-19 | 2023-05-25 | 中科知影(北京)科技有限公司 | Multi-detection-mode magnetic field compensation device, magnetic field compensation method, and magnetic shielding system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111856350A (en) * | 2020-07-09 | 2020-10-30 | 吉林大学 | Non-shielding vector SERF atomic magnetic gradiometer adopting active magnetic field to offset |
| CN111856350B (en) * | 2020-07-09 | 2022-01-07 | 吉林大学 | Non-shielding vector SERF atomic magnetic gradiometer adopting active magnetic field to offset |
| CN112444761A (en) * | 2020-11-06 | 2021-03-05 | 北京航空航天大学 | Design method of octagonal axial shimming coil |
| CN112444761B (en) * | 2020-11-06 | 2021-10-19 | 北京航空航天大学 | Design method of octagonal axial shimming coil |
| CN112857354A (en) * | 2021-01-08 | 2021-05-28 | 中国船舶重工集团公司第七0七研究所 | High-stability Faraday modulator for SERF gyroscope |
| CN112982501A (en) * | 2021-03-03 | 2021-06-18 | 哈尔滨工业大学 | Dielectric elastomer active micro-vibration isolation device based on deformation measurement in near-zero magnetic space |
| CN113008155A (en) * | 2021-03-03 | 2021-06-22 | 哈尔滨工业大学 | Fiber grating and piezoelectric ceramic combined magnetic noise suppression active vibration isolation device |
| CN112982501B (en) * | 2021-03-03 | 2022-05-31 | 哈尔滨工业大学 | Dielectric elastomer active micro-vibration isolation device based on deformation measurement in near-zero magnetic space |
| WO2023088352A1 (en) * | 2021-11-19 | 2023-05-25 | 中科知影(北京)科技有限公司 | Multi-detection-mode magnetic field compensation device, magnetic field compensation method, and magnetic shielding system |
| CN114217248A (en) * | 2021-12-13 | 2022-03-22 | 北京航空航天大学 | Active and passive hybrid magnetic shielding system and design method |
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