CN108007478A - Electromagnetic damper - Google Patents
Electromagnetic damper Download PDFInfo
- Publication number
- CN108007478A CN108007478A CN201711324091.4A CN201711324091A CN108007478A CN 108007478 A CN108007478 A CN 108007478A CN 201711324091 A CN201711324091 A CN 201711324091A CN 108007478 A CN108007478 A CN 108007478A
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- Prior art keywords
- stator
- damper
- rotor
- magnetic
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- Prior art date
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C25/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
- G01C25/005—Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass initial alignment, calibration or starting-up of inertial devices
-
- 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
- G01C21/165—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 combined with non-inertial navigation instruments
-
- 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
- G01C21/18—Stabilised platforms, e.g. by gyroscope
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Manufacturing & Machinery (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present invention relates to a kind of electromagnetic damper, including damper stator, damper rotor and magnetic shielding cover, by installing damper rotor on gyro sensor apparatus, damper stator is installed in rotor correspondence position, it is connected with housing, is powered using stator coil and produces air-gap field, electromagnetic attraction is produced to rotor, rotor magnetic core is moved to stator core, reach gyro sensor vertical radial alignment.Solve in gyrotheodolite gyro sensor decentralization process, the amplitude of oscillation is excessive, shake is serious, deviates CCD capture gyro sensor movement cursors transfers again again, it is necessary to hold up gyro sensor.Gyro sensor is set once to transfer success, north is sought in quickening.
Description
Technical field
It is especially a kind of to be installed on gyrotheodolite gyro sensor bottom the present invention relates to gyrotheodolite technical field
The electromagnetic damper in portion.Some measures that this electromagnetic damper is taken improving the sensitive part device radial alignment of gyro, are suitable for
The automatic north-seeking system of gyro and the system for needing suspension sensitive device vertical radial alignment.
Background technology
The automatic north-seeking system of gyro is a kind of entirely autonomous formula orientation system.It is independently widely used in military affairs with high accuracy
Aim at orientation and the fields of measurement such as positioning, warship, mine oil exploitation.
Gyrotheodolite is one kind of automatic north-seeking system.It is to hang mechanical rotor gyro sensor as core using hang spring
The heart.Using the gyroscopic inertia and precession of gyro under the influence of earth rotation, the moment of face for being directed toward north is produced, makes gyro rotation
Axis is moved back and forth around it, so as to obtain geographical north orientation.The geography side of any point independently can be accurately indicated with reference to theodolite
Position.
During gyro automatic seeking north, first carry out " rough north-seeking " and carry out " essence seeks north " again.The purpose of " rough north-seeking " be by
Gyro sensitive device is within the certain angle of " geographical north " direction, using " tracking reversal point method ".Under gyro sensitive device is automatic
After putting, start gyro work, gyro sensitive device movement locus can be captured by CCD, show movement cursor, be walked by rotating
Stepper motor makes movement cursor be in the middle position of graticle all the time, calculate the thick north to." essence seeks north " use " culmination method "
Inversion point position of the observation movement cursor on graticle, between recording transit time, " geographical north " direction is calculated according to formula.This mistake
There is the demand of rapid north-seeking in journey：
When gyro sensitive device does not work, pinning is lifted up, protects hang spring and rotor gyro sensor.During work, profit
Gyro sensor is transferred to by designated position by hang spring with lifting gear, power-up starts gyro, makes the movement amplitude of oscillation optimal
Within the scope of.But actually in lifting gear decentralization process, gyro sensor may it is excessive due to the amplitude of oscillation, shake is serious,
Deviate CCD capture movement cursor scopes, can not rotating stepper motor pursuit movement cursor, decentralization just it is unsuccessful, it is necessary to hold up top
Spiral shell sensor is transferred again again, until meeting the requirements.This allows for the lengthening of gyroscope north searching time.But also it is subject to gyro start and stop
The limitation of number.
The content of the invention
It is an object of the invention to make up the deficiencies in the prior art part, there is provided one kind is installed on gyrotheodolite gyro
The electromagnetic damper of sensor bottom, which can make gyro sensor, and hang spring reaches vertical after the completion of decentralization
State radial alignment, once transfers successful purpose.
The purpose of the present invention is what is realized by following technological means：
A kind of electromagnetic damper, it is characterised in that：Including damper stator, damper rotor and magnetic shielding cover, damper
Rotor is installed on the hang spring transition axis of gyro sensor bottom, its geometric center and hang spring transition overlapping of axles；Damper is determined
Son is coaxially disposed with damper rotor, and is located at the lower section or outside of damper rotor, damper stator and gyro sensor
Housing be connected；Magnetic shielding cover is arranged at the outside of damper stator and damper rotor.
Moreover, when damper stator is located at the lower section of damper rotor, the damper rotor is with rotor magnetic
The disk of core, rotor magnetic core are installed in rotor magnetic-conduction plate, and uniformly distributed geometric center is located at the center of rotor magnetic-conduction plate mounting hole
On line with hang spring transition overlapping of axles；Damper stator is the disk with stator core belt coil, and stator core is installed on stator
On magnetic conductive board, uniformly distributed geometric center is located on the center line of stator magnetic-conduction plate centre bore and hang spring transition overlapping of axles, and and shell
Body is connected.
Moreover, the rotor magnetic-conduction plate and rotor magnetic core material are magnetically soft alloy, stator magnetic-conduction plate and stator magnet core
Material can be magnetically soft alloy permeability magnetic material or non-magnet material.
Moreover, the stator core is wound with coil, two sets of stator coils are formed, i.e.,：Sets of stator coils one and fixed
Subcoil group two, coil cross arrangement contained by the sets of stator coils one and sets of stator coils two；The magnetic field pole of two groups of stator coils
" N, S " are connected in series cross-distribution to property, and the connection between coil is realized by stator coil terminal plate.
Moreover, when damper stator is located at the outside of damper rotor, the damper rotor is equal for tooth-shape structure
Cloth rotor magnetic pole, the uniformly distributed geometric center of rotor magnetic pole are located on damper rotor installation centerline hole and hang spring transition axis weight
Close；Damper stator includes stator core and coil, is internal tooth magnetic pole loop configuration, and the uniformly distributed geometric center of internal tooth magnetic pole is located at
With hang spring transition overlapping of axles in the geometric center lines of loop configuration, and it is connected with housing.
Moreover, the damper stator includes stator core, sets of stator coils one and sets of stator coils two, stator core
Salient pole is evenly distributed with for internal tooth form structure, winds sets of stator coils one and sets of stator coils two, sets of stator coils one and stator line thereon
Coil cross arrangement contained by circle group two, " N, S's polarity of the magnetic field of two groups of stator coils " connect cross arrangement.
Moreover, the damper rotor material is magnetically soft alloy permeability magnetic material, damper stator material can be soft magnetism
Alloy permeability magnetic material or non-magnet material.
The advantages and positive effects of the present invention are：
1st, the process transferred again is held up to eliminate gyro sensor, reaches and once transfer successful purpose, the present invention
Some measures are taken in structure, increase electromagnetic damper.After gyro sensor transfers to designated position, start damping
Device works, and the hang spring of suspension gyro sensor is in vertical, the position of radial alignment.That is with housing benchmark
Keep radial alignment, reduce the amplitude of oscillation it is excessive, shake defect, ensure gyro sensor be in " geographical north " direction predetermined angular with
It is interior.Afterwards, power off damper and depart from work, start gyro work, radially " essence seeks north ".
2nd, the present invention can overcome that the existing structure gyro sensor decentralization amplitude of oscillation is big, shake is serious, deviates CCD capture light
Region is marked, " slightly looking for north " can not be realized and be transferred again again, it is necessary to hold up gyro sensor, until meet the requirements the defects of.Make
With can ensure after the present invention gyro sensor decentralization after be in vertical state radial alignment, once transfer successfully.
3rd, after the present invention uses electromagnetic damper device, it is ensured that once transfer successfully, be conducive to rapid north-seeking, shorten
Seek the northern time.
4th, The present invention gives two kinds of electromagnetic damper structures：One kind be stator and rotor up and down formatting structure, stator and rotor magnetic
Core is salient pole.One kind is the flat formatting structure of stator and rotor coaxial water, the non-tooth-shape structure of stator and rotor magnetic core.Two are wound on stator core
Group coil.Two kinds of structures can realize gyro sensor vertical radial alignment, and north is sought in quickening.Can be according to different gyro longitudes and latitudes
Instrument structure, selects suitable structure.
5th, this electromagnetic damper structure is not limited to gyrotheodolite application, and can also expand to be applied to other needs vertical footpath
To the system of centering.
Brief description of the drawings
Fig. 1 is the structure diagram (embodiment one) of electromagnetic damper of the present invention；
Fig. 2 is stator schematic diagram (embodiment one) of the present invention；
Fig. 2 a are the schematic diagrames of stator；Fig. 2 b are the side views of Fig. 2 a；
Fig. 3 is rotor schematic diagram (embodiment one) of the present invention；
Fig. 3 a are the schematic diagrames of rotor；Fig. 3 b are the side views of Fig. 3 a；
Fig. 4 is stator and rotor schematic diagram (embodiment two) of the present invention.
Embodiment
Below in conjunction with the accompanying drawings in detail narration the embodiment of the present invention, it is necessary to explanation, the present embodiment be it is narrative, no
It is limited, it is impossible to which protection scope of the present invention is limited with this.
Embodiment one：
A kind of electromagnetic damper, including damper stator 4, damper rotor 1 and magnetic shielding cover 3.Damper rotor is installed
On the hang spring transition axis 2 of gyro sensor bottom, its geometric center and hang spring transition overlapping of axles.Damper stator 4 and resistance
Buddhist nun's device rotor 1 is coaxially disposed, and positioned at the lower section of damper rotor 1, damper stator 4 and the housing of gyro sensor are consolidated
Even.The layout of damper stator, rotor structures is upper and lower radial centering, and has gap between damper stator and rotor, which sets
For h.To have prevented external magnetic field interference, magnetic shielding cover is provided with the outside of damper stator 4 and damper rotor 1.
As shown in Fig. 2, damper stator is the disk with eight 6 belt coils of stator core, eight stator cores 6 are uniformly distributed
In stator magnetic-conduction plate 5, uniformly distributed geometric center is located on the center line of 5 centre bore of stator magnetic-conduction plate and hang spring transition axis
2 overlap, and are connected with housing.
Eight stator cores are wound with eight coils, form two sets of stator coils, i.e.,：Sets of stator coils 1
With sets of stator coils 29, the sets of stator coils one and sets of stator coils two respectively contain four coils, cross arrangement；Coil 1,3,5,7
For sets of stator coils one, coil 2,4,6,8 is sets of stator coils two.Polarity of the magnetic field " N, S " the company of series connection of two groups of stator coils
Cross-distribution is connect, " A1, B1 " are one whole story exit of sets of stator coils, and " A2, B2 " are two whole story exit of sets of stator coils.Line
Connection between circle is realized by stator coil terminal plate 8.
As shown in figure 3, damper rotor is the disk with four rotor magnetic cores 10, four rotor magnetic cores 10 are uniformly installed
In rotor magnetic-conduction plate 11, uniformly distributed geometric center is located on the center line of 11 mounting hole of rotor magnetic-conduction plate and hang spring transition axis 2
Overlap；
The rotor magnetic-conduction plate and rotor magnetic core material are magnetically soft alloy, and stator magnetic-conduction plate 5 and 6 material of stator core can
To be magnetically soft alloy permeability magnetic material or non-magnet material.Big to generation high-intensity magnetic field, suction, led using magnetically soft alloy
Magnetic material, small to suction requirement uses non-magnet material.
According to damper operation principle, the magnetic core quantity of stator and rotor is unrestricted, and magnetic core quantity is more, the synthesis of generation
Electromagnetic force is big, but magnetic core number must be 2 multiple.
When damper works, it is powered to sets of stator coils one and sets of stator coils two, air gap is produced between stator and rotor
Magnetic field, magnetizes rotor magnetic core, produces suction, makes rotor movement shortest path, reach stator and rotor magnetic core radial alignment.
Ensure that the hang spring transition axis of suspension gyro sensor is in vertical state.
Embodiment two：
Its operation principle, structure type and Fig. 1 structures is consistent.It is simply different in form in layout.
As shown in figure 4, a kind of electromagnetic damper, including damper stator 14, damper rotor 12 and magnetic shielding cover 3.Resistance
Buddhist nun's device rotor 12 is installed on the hang spring transition axis 2 of gyro sensor bottom, its geometric center is overlapped with hang spring transition axis 2.
Damper stator 14 is coaxially disposed with damper rotor 12, and positioned at the outside of damper rotor 12, damper stator 14 and top
The housing of spiral shell sensor is connected.The layout of damper stator, rotor structures is upper and lower radial centering, and damper stator and rotor it
Between there is gap h.To have prevented external magnetic field interference, magnetic screen is provided with the outside of damper stator 14 and damper rotor 12
Cover.
Damper rotor 12 is evenly distributed with four rotor magnetic poles 17, the uniformly distributed geometry of four rotor magnetic poles 17 for cross tooth-shape structure
Center is located on the installation centerline hole of damper rotor 12 to be overlapped with hang spring transition axis 2；Damper stator 14 includes stator core
13 and sets of stator coils 1 wound on it, sets of stator coils 2 16, it is eight internal tooth magnetic pole loop configuration, eight internal tooth magnetic poles
Uniformly distributed geometric center is located in the geometric center lines of loop configuration to be overlapped with hang spring transition axis 2, and is connected with housing.Damper
Rotor material is magnetically soft alloy permeability magnetic material, damper stator core material can be magnetically soft alloy permeability magnetic material or
Non-magnet material.Larger magnetic field can be produced by being powered using magnetically soft alloy material coil, to damping rotor suction bigger.Stator coil
Group one and two each four coils of sets of stator coils, cross arrangement, coil 1,3,5,7 is sets of stator coils one, and coil 2,4,6,8 is
Sets of stator coils two, " N, S's polarity of the magnetic field of two groups of stator coils " connect cross arrangement." A1, B1 " are sets of stator coils one
Whole story exit, " A2, B2 " are two whole story exit of sets of stator coils.
According to damper operation principle, the magnetic core quantity of stator and rotor is unrestricted, and magnetic core quantity is more, the synthesis of generation
Electromagnetic force is big, but magnetic core number must be 2 multiple.
When damper works, it is powered to sets of stator coils 1 and sets of stator coils 2 16, is produced between stator and rotor
Air-gap field, magnetizes rotor, produces suction, makes rotor movement shortest path, reach stator and rotor salient pole centering.Ensure
The hang spring of suspension gyro sensor is in vertical state, radial alignment.
The present invention design principle be：
Gyrotheodolite overall structure is consistent with existing structure, simply increases between the bottom of gyro sensor and housing
Magnetic damper device is powered up, in the rotor part of the bottom of gyro sensor installation damper, therewith below correspondence position
Damper stator component is co-axially mounted, is connected with housing, ensures certain gap between stator and rotor.Implementation is as follows：
1st, damper is electromagnetic component, is made of stator and rotor, and the size between stator and rotor according to force sets certain
Gap；The establishment of damper stator and rotor can be inside and outside distribution, can also be distributed up and down.Inside and outside distribution gap is radial direction, on
Lower distribution gap is axial.No matter which kind of structure, rotor is both mounted in gyro sensor, and stator is installed on corresponding position
Put, be connected with housing.
2nd, the stator of electromagnetic damper is used to produce magnetic field, magnetizes magnetic conduction rotor, makes rotor close to stator, reach closed loop
Magnetic-path is most short.Stator coil is divided to two kinds, every group of four coils.The polarity in every group of generation magnetic field is " N, S, N, S " are arranged alternately.
Two groups of coils are circumferentially evenly arranged.Coil can be the coil of air core coil or ribbon core.In the complete phase of coil
With in the case of, the magnetic field that the coil of ribbon core produces is stronger, and core material is magnetically soft alloy, is selected according to system requirements
Select.
3rd, the rotor of electromagnetic damper is used to form magnetic loop magnetic conduction.The material of rotor is non-retentive alloy.Damper
The structure of rotor is according to stator structure design.
4th, in addition to above-mentioned electromagnetic damper structure stator and rotor number of poles, the number of poles of damper structure stator and rotor is to adjust
, number of poles is more, and stator coil generation magnetic field is bigger to the suction of rotor, can accelerate radial alignment, but number of poles is 2n (n
=1,2 ...).
Claims (7)
- A kind of 1. electromagnetic damper, it is characterised in that：Including damper stator, damper rotor and magnetic shielding cover, damper turns Son is installed on the hang spring transition axis of gyro sensor bottom, its geometric center and hang spring transition overlapping of axles；Damper stator It is coaxially disposed with damper rotor, and positioned at the lower section or outside of damper rotor, damper stator and gyro sensor Housing is connected；Magnetic shielding cover is arranged at the outside of damper stator and damper rotor.
- A kind of 2. electromagnetic damper according to claim 1, it is characterised in that：When damper stator is located at damper rotor Lower section when, the damper rotor is the disk with rotor magnetic core, and rotor magnetic core is installed in rotor magnetic-conduction plate, uniformly distributed Geometric center be located on the center line of rotor magnetic-conduction plate mounting hole and hang spring transition overlapping of axles；Damper stator is with stator The disk of magnetic core belt coil, stator core are installed in stator magnetic-conduction plate, and uniformly distributed geometric center is located at stator magnetic-conduction plate center With hang spring transition overlapping of axles on the center line in hole, and it is connected with housing.
- A kind of 3. electromagnetic damper according to claim 2, it is characterised in that：The rotor magnetic-conduction plate and rotor magnetic core Material is magnetically soft alloy, and stator magnetic-conduction plate and stator core material can be magnetically soft alloy permeability magnetic materials or non-magnetic Material.
- A kind of 4. electromagnetic damper according to claim 2, it is characterised in that：The stator core is wound with coil, Two sets of stator coils are formed, i.e.,：Sets of stator coils one and sets of stator coils two, the sets of stator coils one and sets of stator coils two Contained coil cross arrangement；" N, S " are connected in series cross-distribution to the polarity of the magnetic field of two groups of stator coils, the connection between coil Realized by stator coil terminal plate.
- A kind of 5. electromagnetic damper according to claim 1, it is characterised in that：When damper stator is located at damper rotor Outside when, the damper rotor be evenly distributed with rotor magnetic pole for tooth-shape structure, and the uniformly distributed geometric center of rotor magnetic pole is positioned at hindering Buddhist nun's device rotor installation centerline hole on hang spring transition overlapping of axles；Damper stator includes stator core and coil, is internal tooth magnetic Pole loop configuration, the uniformly distributed geometric center of internal tooth magnetic pole be located in the geometric center lines of loop configuration with hang spring transition overlapping of axles, And it is connected with housing.
- A kind of 6. electromagnetic damper according to claim 5, it is characterised in that：The damper stator includes stator magnet Core, sets of stator coils one and sets of stator coils two, stator core are evenly distributed with salient pole for internal tooth form structure, wind sets of stator coils thereon One and sets of stator coils two, coil cross arrangement contained by sets of stator coils one and sets of stator coils two, the magnetic of two groups of stator coils " N, S " connect cross arrangement for polarity.
- A kind of 7. electromagnetic damper according to claim 5, it is characterised in that：The damper rotor material is soft magnetism Alloy permeability magnetic material, damper stator material can be magnetically soft alloy permeability magnetic material or non-magnet material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711324091.4A CN108007478A (en) | 2017-12-13 | 2017-12-13 | Electromagnetic damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711324091.4A CN108007478A (en) | 2017-12-13 | 2017-12-13 | Electromagnetic damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108007478A true CN108007478A (en) | 2018-05-08 |
Family
ID=62058344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711324091.4A Pending CN108007478A (en) | 2017-12-13 | 2017-12-13 | Electromagnetic damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108007478A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443335A (en) * | 2018-10-31 | 2019-03-08 | 中国船舶重工集团公司第七0七研究所 | A kind of novel sensitivity portion for pendulum type gyroscope north searching instrument |
| CN109780109A (en) * | 2019-03-07 | 2019-05-21 | 梁军 | Electromagnetic damper structure and electromagnetic damper |
| CN110926443A (en) * | 2019-12-10 | 2020-03-27 | 西安航天精密机电研究所 | Sensor for three-floating gyroscope and stator manufacturing process thereof |
Citations (5)
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|---|---|---|---|---|
| CN1126310A (en) * | 1995-02-28 | 1996-07-10 | 中国航天工业总公司第一研究院第十三研究所 | Quick high accuracy gyroscope theodolite |
| CN1820152A (en) * | 2003-07-31 | 2006-08-16 | 财团法人生产技术研究奖励会 | Electromagnetic damper controller |
| CN103307101A (en) * | 2013-05-08 | 2013-09-18 | 南京航空航天大学 | Mixed damper |
| CN106594140A (en) * | 2017-03-01 | 2017-04-26 | 河北宝力工程装备股份有限公司 | Novel electromagnetic damper |
| CN107387631A (en) * | 2017-08-28 | 2017-11-24 | 中国船舶重工集团公司第七〇九研究所 | A kind of self-induction reluctance type electromagnetic damper |
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2017
- 2017-12-13 CN CN201711324091.4A patent/CN108007478A/en active Pending
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| CN1126310A (en) * | 1995-02-28 | 1996-07-10 | 中国航天工业总公司第一研究院第十三研究所 | Quick high accuracy gyroscope theodolite |
| CN1820152A (en) * | 2003-07-31 | 2006-08-16 | 财团法人生产技术研究奖励会 | Electromagnetic damper controller |
| CN103307101A (en) * | 2013-05-08 | 2013-09-18 | 南京航空航天大学 | Mixed damper |
| CN106594140A (en) * | 2017-03-01 | 2017-04-26 | 河北宝力工程装备股份有限公司 | Novel electromagnetic damper |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109443335A (en) * | 2018-10-31 | 2019-03-08 | 中国船舶重工集团公司第七0七研究所 | A kind of novel sensitivity portion for pendulum type gyroscope north searching instrument |
| CN109780109A (en) * | 2019-03-07 | 2019-05-21 | 梁军 | Electromagnetic damper structure and electromagnetic damper |
| CN110926443A (en) * | 2019-12-10 | 2020-03-27 | 西安航天精密机电研究所 | Sensor for three-floating gyroscope and stator manufacturing process thereof |
| CN110926443B (en) * | 2019-12-10 | 2024-01-09 | 西安航天精密机电研究所 | Sensor for three-floating gyroscope and stator preparation process thereof |
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Application publication date: 20180508 |