CN105857647A - Production method of despinning acceleration magnetic field for low-speed spinning spatial unmagnetized metal debris - Google Patents
Production method of despinning acceleration magnetic field for low-speed spinning spatial unmagnetized metal debris Download PDFInfo
- Publication number
- CN105857647A CN105857647A CN201610177608.0A CN201610177608A CN105857647A CN 105857647 A CN105857647 A CN 105857647A CN 201610177608 A CN201610177608 A CN 201610177608A CN 105857647 A CN105857647 A CN 105857647A
- Authority
- CN
- China
- Prior art keywords
- magnetic field
- field intensity
- constant
- fragment
- change
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G4/00—Tools specially adapted for use in space
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0273—Magnetic circuits with PM for magnetic field generation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Remote Sensing (AREA)
- Aviation & Aerospace Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
The invention relates to a production method of a despinning acceleration magnetic field for low-speed spinning spatial unmagnetized metal debris. According to the magnetic field setting method, the variable magnetic field is applied in the direction orthogonal with a constant despinning magnetic field, thus, eddy currents are generated inside debris conductors and act together with eddy currents generated by debris spinning motion under the action of the constant magnetic field, the eddy current effect in the low-speed spinning debris is improved, the despinning torque under the action of the constant magnetic field is increased, and the despinning time of the debris is shortened. Compared with the prior art, the method has the following advantages that the variable magnetic field is used for generating the eddy currents superimposed on the eddy currents generated by the spinning motion of the unmagnetized metal debris in the magnetic field, the despinning torque is generated, the energy transfer efficiency is improved, the despinning torque is increased, and the despinning time is shortened.
Description
Technical field
The invention belongs to space junk Removal Technology field, relate to the magnetic field that space unmagnetized metal fragment is carried out racemization
Technology, is specifically related to the production method accelerating racemization magnetic field of a kind of low speed spin space unmagnetized metal fragment.
Background technology
" space junk " refers to be positioned on Earth's orbit or the culture of non-functional of atmospheric reentry, including
Its fragment and parts.Day by day frequent along with mankind's solar-system operation, the quantity of space junk is progression growth trend, and
Concentrating on the height region for 800-1000km, affected by space perturbative force, these fragments are often in spin at a high speed
Kinestate.This brings great difficulty to the seizure of space junk and cleaning work.Space junk is carried out racemization
It is to catch and the top priority of cleaning.Currently mainly there are contact racemization and contactless racemization.Space based on magnetic field
Fragment eddy current racemization technology belongs to contactless racemization, and the research is still in initial period, and existing research is mainly concentrated
Racemization method under stationary magnetic field, does not accounts for the magnetic field method to set up that stationary magnetic field cooperates with variation magnetic field.
" Study on the eddy in " ACTA ASTRONAUTICA " volume 76 145-153 page publication in 2012
current damping of the spin dynamics of space debris from the Ariane launcher upper
Stages " literary composition (author Praly, N. etc.), discuss the space junk produced by Ariane Upper Stage at the earth
Eddy current effect under the action of a magnetic field, show that, under geomagnetic field action, space can taper off the conclusion of spin at fragment.
Illustrate that the rotary motion of space junk can be played damping action by stationary magnetic field theoretically.This passive racemization side
The formula time is longer, generally about half a year.
" Eddy currents in " ACTA ASTRONAUTICA " volume 114 34-53 page publication in 2015
applied to de-tumbling of space debris:Analysis and validation of approximate proposed
Methods " literary composition (author Gomez, Natalia Ortiz etc.), it is proposed that set up stationary magnetic field by coil, utilize whirlpool
The active racemization technology of circulation square.The method realizes the racemization of space junk by actively building directional magnetic field, research
The size of eddy current torque and time of racemization.This technology sets up stationary magnetic field by single group coil, cuts by fragment motion
Cut the magnetic line of force and produce eddy current, generate racemization torque.Owing to the size of eddy current is relevant with fragment movement velocity, fragment moves
Speed is the fastest, and eddy current is the biggest, and racemization torque is the biggest, and when the speed that fragment rotates is slower, racemization torque also can be compared
Little, during racemization, the rotary speed of fragment can be more and more less, and racemization torque also can become more and more less, disappears
Rotation required time is longer.
The national inventing patent " a kind of method and apparatus removing space junk " of application in 2013, public announcement of a patent application
Number CN103434658A, inventor: Li Yi are brave, it is proposed that tied mutually by electric field force, magnetic field force or electromagnetic force
Close, change movement velocity and the direction of motion of space junk, make a kind of of fragment deviation trapped orbit remove space junk
Method.This technology does not refers to rotary motion and the racemization problem of fragment.
Prior art analyzes eddy current torque mechanism of production and implementation method, and the magnetic field used is stationary magnetic field, only
The eddy current torque relying on the rotary motion of fragment self to produce carries out racemization.Size and fragment movement velocity due to eddy current
Relevant, fragment movement velocity is the fastest, and eddy current is the biggest, and racemization torque is the biggest；When the speed that fragment rotates is slower, disappear
Spin moment also can be smaller.During racemization, the rotary speed of fragment can be more and more less, and racemization torque also can become
Obtaining more and more less, racemization required time then can be longer.
Summary of the invention
Solve the technical problem that
In place of the deficiencies in the prior art, the present invention proposes a kind of low speed spin space unmagnetized metal fragment
Accelerate the production method in racemization magnetic field, utilize variation magnetic field to produce eddy current on unmagnetized metal fragment, move with fragment
The whirlpool flowing common action produced in magnetic field, forms the variation magnetic field of eddy current torque, strengthens eddy current torque, accelerates racemization
Process, improves racemization efficiency.
Technical scheme
A kind of accelerate racemization magnetic field the production method of low speed spin space unmagnetized metal fragment, it is characterised in that:
The orthogonal direction of stationary magnetic field applies an alternating magnetic field, jointly produces eddy current at fragment conductor, strengthens eddy current and turns
Square, accelerates racemization process, specifically comprises the following steps that
Step 1: in the plane vertical with the rotation main shaft of unmagnetized metal fragment, passes through point for former with fragment main shaft
Point, selecting two any mutually orthogonal directions is x-axis and y-axis, applies magnetic field M and magnetic field at two axial directions
N；The positive direction of magnetic field M is y-axis negative direction, the positive direction of magnetic field N for x-axis positive direction；
Step 2: determine produce racemization torque condition:
1, it is that there is constant magnetic field intensity H as magnetic field M1Time, magnetic field N is magnetic field intensity H of change2:
Situation 1: when fragment rotates counterclockwise:
If magnetic field intensity H that magnetic field M is constant1＞ 0, magnetic field N applies magnetic field intensity H of change2Along x-axis positive direction
Reduce, for
If magnetic field M constant magnetic field intensity H1＜ 0, magnetic field N applies magnetic field intensity H of change2Square along x-axis
To increase, for
Situation 2: when fragment turns clockwise:
If magnetic field intensity H that magnetic field M is constant1＞ 0, magnetic field N applies magnetic field intensity H of change2Along x-axis positive direction
Increase, for
If magnetic field intensity H that magnetic field M is constant1＜ 0, magnetic field N applies magnetic field intensity H of change2Along x-axis positive direction
Reduce, for
2, magnetic field M has magnetic field intensity H of change1, magnetic field N has constant magnetic field intensity H2；
Situation 1: when fragment rotates counterclockwise:
If magnetic field intensity H that magnetic field N is constant2＞ 0, magnetic field M apply magnetic field intensity H of change1Along y-axis negative direction
Increase, for
If magnetic field intensity H that magnetic field N is constant2＜ 0, magnetic field M apply magnetic field intensity H of change1Along y-axis negative direction
Reduce, for
Situation 2: when fragment turns clockwise:
If magnetic field intensity H that magnetic field N is constant2＞ 0, magnetic field M apply magnetic field intensity H of change1Along y-axis negative direction
Reduce, for
If magnetic field intensity H that magnetic field N is constant2＜ 0, magnetic field M apply magnetic field intensity H of change1Along y-axis negative direction
Increase, for
The alternating magnetic field of described applying is square wave, triangular wave, sawtooth waveforms or trapezoidal wave.
Beneficial effect
The production method accelerating racemization magnetic field of a kind of low speed spin space unmagnetized metal fragment that the present invention proposes, profit
It is used on the direction mutually orthogonal with constant racemization magnetic field applying variation magnetic field, thus produces eddy current at fragment conductor,
The whirlpool flowing common action produced with fragment rotary motion under the effect of stationary magnetic field, to strengthen within low speed rotation fragment
Eddy current effect, improves the racemization torque under the effect of stationary magnetic field, shortens a kind of magnetic field method to set up of fragment racemization time.
The inventive method compared with the existing technology has the advantage that and utilizes variation magnetic field to produce eddy current, with unmagnetized gold
Belong to the eddy current superposition that fragment rotary motion produces in magnetic field, produce racemization torque, improve the efficiency of energy transmission,
Increase racemization torque, reduce the racemization time.
Accompanying drawing explanation
Fig. 1: the action of a magnetic field mode schematic diagram
Fig. 2: M is stationary magnetic field, faradic current schematic diagram when N is variation magnetic field
Fig. 3: M is stationary magnetic field, and when N is variation magnetic field, magnetic field arranges schematic diagram
Fig. 4: N is stationary magnetic field, faradic current schematic diagram when M is variation magnetic field
Fig. 5: N is stationary magnetic field, and when M is variation magnetic field, magnetic field arranges schematic diagram
Fig. 6: during alternating action, magnetic field arranges schematic diagram
Detailed description of the invention
In conjunction with embodiment, accompanying drawing, the invention will be further described:
The present invention is that one utilizes variation magnetic field to produce eddy current on unmagnetized metal fragment, moves in magnetic field with fragment
The whirlpool flowing common action produced, forms the variation magnetic field technology of eddy current torque, and it is following interior that it is technically characterized in that it contains
Hold:
(1) action mode in magnetic field
In the plane vertical with the rotation main shaft of unmagnetized metal fragment, arbitrarily select two mutually orthogonal directions,
With fragment main shaft by putting as initial point, two vertical direction are designated as x-axis and y-axis respectively.Respectively at two axial directions
Apply magnetic field M and magnetic field N.Convenient for discussing, it is stipulated that to be just when fragment direction of rotation is counterclockwise, magnetic field M's
Positive direction is y-axis negative direction, the positive direction of magnetic field N for x-axis positive direction；
(2) as magnetic field M, there is constant magnetic field intensity H1, magnetic field N has magnetic field intensity H of change2Time, produce
The condition of raw racemization torque
When fragment rotates counterclockwise, when magnetic field M has constant magnetic field intensity H1And during along y-axis negative direction, be designated as
H1＞ 0, the eddy current direction now produced is that in x-axis, in side conductor, electric current flows out paper, electric current stream in side conductor under x-axis
Enter paper.The direction of now eddy current torque is contrary with rotating speed, belongs to racemization torque.Turn for producing the racemization in same direction
Square, it is desirable to the eddy current direction that the magnetic field N in x-axis direction induces in the conductor should be with magnetic field M independent role
Time eddy current direction identical, i.e. the direction of induced field should be along x-axis positive direction, according to Lenz's law, faradism
The magnetic field of stream to hinder the change of former magnetic flux.Now, the condition that racemization torque produces is: the magnetic field intensity of magnetic field N
H2It is to reduce along x-axis positive direction, is designated asIn like manner, H is worked as1During ＜ 0, the condition that racemization torque produces is:
Magnetic field intensity H of magnetic field N2It is to increase along x-axis positive direction, is designated as
When fragment turns clockwise, it is similar to therewith.The most only provide conclusion.The condition that i.e. racemization torque produces is: when
H1During ＜ 0, magnetic field intensity H of magnetic field N2It is to reduce along x-axis positive direction, is designated asWork as H1> 0 time,
Magnetic field intensity H of magnetic field N2It is to increase along x-axis positive direction, is designated as
(3) magnetic field M has magnetic field intensity H of change1, magnetic field N has constant magnetic field intensity H2, generation disappears
The condition of spin moment
When fragment rotates counterclockwise, when magnetic field N has constant magnetic field intensity H2And during along x-axis positive direction, i.e. H2
During ＞ 0, the eddy current direction now produced is that in y-axis left conductor, electric current flows out paper, electric current stream in y-axis right conductor
Enter paper.The direction of now eddy current torque is contrary with rotating speed, belongs to racemization torque.Turn for producing the racemization in same direction
Square, it is desirable in the magnetic field in y-axis direction, the eddy current direction induced in the conductor should with during the independent role of N magnetic field
Eddy current direction is identical, i.e. the direction of induced field should be according to Lenz's law, faradic along y-axis positive direction
Magnetic field to hinder the change of former magnetic flux.Now, the condition that racemization torque produces is: magnetic field intensity H of magnetic field M1Edge
Y-axis negative direction is to increase, and is designated asIn like manner, H is worked as2During ＜ 0, the condition that racemization torque produces is: magnetic
Magnetic field intensity H of field M1It is to reduce along y-axis negative direction, is designated as
When fragment turns clockwise, it is similar to therewith.So the condition that racemization torque produces is: work as H2During ＜ 0, magnetic field
Magnetic field intensity H of M1It is to increase along y-axis negative direction, is designated asWork as H2During ＞ 0, the magnetic field of magnetic field M
Intensity H1It is to reduce along y-axis negative direction, is designated as
The present embodiment is that the version of fragment does not constitute shadow to magnetic field condition about the magnetic field condition producing racemization torque
Ringing, for convenience, choosing chip shape is hollow cylinder, rotates main shaft and is positioned at its center line, by the inverse time
Pin direction rotates.Choosing the rectangular coordinate system being perpendicular to the foundation of cylindrical cross section as is shown in fig. 1, initial point is and cuts open
The center of circle of face circle, takes any two vertical direction and sets up x-axis and y-axis, apply respectively with y-axis direction along the x-axis direction
M and N magnetic field, magnetic field intensity is respectively H1And H2, it is illustrated that direction is positive direction.
During as in figure 2 it is shown, fragment rotates counterclockwise, when magnetic field M has constant magnetic field intensity H1And bear along y-axis
During direction, it is designated as H1＞ 0, the eddy current direction now produced is that in x-axis, in side conductor, electric current flows out paper, on the downside of x-axis
In conductor, electric current flows into paper.The direction of now eddy current torque is contrary with rotating speed, belongs to racemization torque.Same for producing
The racemization torque in direction, it is desirable to the eddy current direction that the magnetic field N in x-axis direction induces in the conductor should be with magnetic field
Eddy current direction during M independent role is identical, i.e. the direction of induced field should be fixed according to Lenz along x-axis positive direction
Rule, faradic magnetic field to hinder the change of former magnetic flux.Now, the condition that racemization torque produces is: magnetic field N
Magnetic field intensity H2It is to reduce along x-axis positive direction, is designated asIn like manner, H is worked as1During ＜ 0, racemization torque produces
Condition be: magnetic field intensity H of magnetic field N2It is to increase along x-axis positive direction, is designated as
Now, M and the N magnetic field that the satisfied magnetic field producing racemization torque arranges condition can be arranged to shown in Fig. 3,
But it is not limited to the type shown in Fig. 3.From figure 3, it can be seen that in 0-t1 section, M magnetic field magnetic field intensity H1For
Just, N magnetic field magnetic field intensity H2Rate of changeIn t1-t2 section, M magnetic field magnetic field intensity H2It is negative, N magnetic
The rate of change of fieldNext cycle repeats said process, now produced torque and the direction of motion of fragment
On the contrary, for racemization torque.
As shown in Figure 4, when magnetic field N, there is constant magnetic field intensity H2And during along x-axis positive direction, i.e. H2During ＞ 0,
The eddy current direction now produced is that in y-axis left conductor, electric current flows out paper, and in y-axis right conductor, electric current flows into paper.
The direction of now eddy current torque is contrary with rotating speed, belongs to racemization torque.For producing the racemization torque in same direction, it is desirable to
In the magnetic field in y-axis direction, the eddy current direction induced in the conductor should be with the eddy current direction during independent role of N magnetic field
Identical, i.e. the direction of induced field should be along y-axis positive direction, and according to Lenz's law, faradic magnetic field to hinder
Hinder the change of former magnetic flux.Now, the condition that racemization torque produces is: magnetic field intensity H of magnetic field M1Along y-axis losing side
To be to increase, it is designated asIn like manner, H is worked as2During ＜ 0, the condition that racemization torque produces is: the magnetic of magnetic field M
Field intensity H1It is to reduce along y-axis negative direction, is designated as
Now, M and the N magnetic field that the satisfied magnetic field producing racemization torque arranges condition can be arranged to shown in Fig. 3,
But it is not limited to the type shown in Fig. 3.From figure 3, it can be seen that in 0-t1 section, N magnetic field magnetic field intensity H2For just,
M magnetic field magnetic field intensity H1Rate of changeIn t1-t2 section, N magnetic field magnetic field intensity H2It is negative, M magnetic field
Magnetic field intensity H1Rate of changeNext cycle repeats said process, now produced torque and the fortune of fragment
Dynamic in opposite direction, for racemization torque.
Comprehensive both the above situation, simultaneously takes account of stationary magnetic field and is changed to negative sense by forward and to have a change procedure, can
So that two kinds of magnetic fields are arranged to Fig. 4 mode.But it is not limited to mode shown in figure.As it can be seen, at 0-t1 section, M
For stationary magnetic field, and H1> 0, N is variation magnetic field, andIn t1-t2 section, N is stationary magnetic field, and H2< 0,
H1For variation magnetic field, andIn t2-t3 section, M is stationary magnetic field, and H1< 0, N is variation magnetic field, and
In t3-t4 section, N is stationary magnetic field, and H2> 0, M is variation magnetic field, andNext cycle repeats above-mentioned
Process.Now, the torque direction of generation is contrary with fragment direction of rotation, for racemization torque.
For fragment according to the in the case of of turning clockwise, technical scheme is given detailed condition, has the most no longer illustrated
Explanation.
Claims (2)
1. the production method accelerating racemization magnetic field of a low speed spin space unmagnetized metal fragment, it is characterized in that: the orthogonal direction in stationary magnetic field applies an alternating magnetic field, jointly produce eddy current at fragment conductor, strengthen eddy current torque, accelerate racemization process, specifically comprise the following steps that
Step 1: in the plane vertical with the rotation main shaft of unmagnetized metal fragment, with fragment main shaft by putting as initial point, selecting two any mutually orthogonal directions is x-axis and y-axis, applies magnetic field M and magnetic field N at two axial directions；The positive direction of magnetic field M is y-axis negative direction, the positive direction of magnetic field N for x-axis positive direction；
Step 2: determine produce racemization torque condition:
(1) it is, that there is constant magnetic field intensity H as magnetic field M1Time, magnetic field N is magnetic field intensity H of change2:
Situation 1: when fragment rotates counterclockwise:
If magnetic field intensity H that magnetic field M is constant1＞ 0, magnetic field N applies magnetic field intensity H of change2Reduce along x-axis positive direction, for
If magnetic field M constant magnetic field intensity H1＜ 0, magnetic field N applies magnetic field intensity H of change2Increase along x-axis positive direction, for
Situation 2: when fragment turns clockwise:
If magnetic field intensity H that magnetic field M is constant1＞ 0, magnetic field N applies magnetic field intensity H of change2Increase along x-axis positive direction, for
If magnetic field intensity H that magnetic field M is constant1＜ 0, magnetic field N applies magnetic field intensity H of change2Reduce along x-axis positive direction, for
(2), magnetic field M has magnetic field intensity H of change1, magnetic field N has constant magnetic field intensity H2；
Situation 1: when fragment rotates counterclockwise:
If magnetic field intensity H that magnetic field N is constant2＞ 0, magnetic field M apply magnetic field intensity H of change1Increase along y-axis negative direction, for
If magnetic field intensity H that magnetic field N is constant2＜ 0, magnetic field M apply magnetic field intensity H of change1Reduce along y-axis negative direction, for
Situation 2: when fragment turns clockwise:
If magnetic field intensity H that magnetic field N is constant2＞ 0, magnetic field M apply magnetic field intensity H of change1Reduce along y-axis negative direction, for
If magnetic field intensity H that magnetic field N is constant2＜ 0, magnetic field M apply magnetic field intensity H of change1Increase along y-axis negative direction, for
The production method accelerating racemization magnetic field of low speed spin space the most according to claim 1 unmagnetized metal fragment, it is characterised in that: the alternating magnetic field of described applying is square wave, triangular wave, sawtooth waveforms or trapezoidal wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610177608.0A CN105857647B (en) | 2016-03-25 | 2016-03-25 | The production method for accelerating racemization magnetic field of low speed spin space unmagnetized metal fragment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610177608.0A CN105857647B (en) | 2016-03-25 | 2016-03-25 | The production method for accelerating racemization magnetic field of low speed spin space unmagnetized metal fragment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105857647A true CN105857647A (en) | 2016-08-17 |
| CN105857647B CN105857647B (en) | 2018-06-29 |
Family
ID=56625300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610177608.0A Active CN105857647B (en) | 2016-03-25 | 2016-03-25 | The production method for accelerating racemization magnetic field of low speed spin space unmagnetized metal fragment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105857647B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106394941A (en) * | 2016-09-09 | 2017-02-15 | 西北工业大学 | Method for racemizing space non-magnetized metal debris |
| CN107176311A (en) * | 2017-07-06 | 2017-09-19 | 中国科学院上海技术物理研究所 | A kind of adaptive laser racemization system for space junk |
| CN115416879A (en) * | 2022-09-14 | 2022-12-02 | 北京理工大学 | Spatial non-magnetic metal body despinning device and method |
| CN116605424A (en) * | 2023-04-20 | 2023-08-18 | 哈尔滨工业大学 | Modularized hybrid excitation space debris magnetic racemization method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5883454A (en) * | 1996-06-28 | 1999-03-16 | Creative Gifts, Inc. | Electormagnetic drive method and apparatus for driving a rotationally stabilized magnetically levitated object |
| CN1416144A (en) * | 2002-10-16 | 2003-05-07 | 刘武青 | Method and device for magnetzing object without need of electromagnetic field so called magnetization effect of |
| CN1818592A (en) * | 2006-03-13 | 2006-08-16 | 中国科学院电工研究所 | Measuring method and device for object rotation inertia |
| WO2006087463A1 (en) * | 2005-02-15 | 2006-08-24 | Levisys | Method for stabilising a magnetically levitated object |
| CN105353823A (en) * | 2015-11-25 | 2016-02-24 | 西北工业大学 | Method for controlling DC despun magnetic field through spatial non-magnetized metal chips |
-
2016
- 2016-03-25 CN CN201610177608.0A patent/CN105857647B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5883454A (en) * | 1996-06-28 | 1999-03-16 | Creative Gifts, Inc. | Electormagnetic drive method and apparatus for driving a rotationally stabilized magnetically levitated object |
| CN1416144A (en) * | 2002-10-16 | 2003-05-07 | 刘武青 | Method and device for magnetzing object without need of electromagnetic field so called magnetization effect of |
| WO2006087463A1 (en) * | 2005-02-15 | 2006-08-24 | Levisys | Method for stabilising a magnetically levitated object |
| CN1818592A (en) * | 2006-03-13 | 2006-08-16 | 中国科学院电工研究所 | Measuring method and device for object rotation inertia |
| CN105353823A (en) * | 2015-11-25 | 2016-02-24 | 西北工业大学 | Method for controlling DC despun magnetic field through spatial non-magnetized metal chips |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106394941A (en) * | 2016-09-09 | 2017-02-15 | 西北工业大学 | Method for racemizing space non-magnetized metal debris |
| CN106394941B (en) * | 2016-09-09 | 2019-11-22 | 西北工业大学 | The method that a kind of pair of space unmagnetized metal fragment carries out racemization |
| CN107176311A (en) * | 2017-07-06 | 2017-09-19 | 中国科学院上海技术物理研究所 | A kind of adaptive laser racemization system for space junk |
| CN115416879A (en) * | 2022-09-14 | 2022-12-02 | 北京理工大学 | Spatial non-magnetic metal body despinning device and method |
| CN115416879B (en) * | 2022-09-14 | 2024-05-10 | 北京理工大学 | Device and method for speed reduction racemization of space nonmagnetic metal body |
| CN116605424A (en) * | 2023-04-20 | 2023-08-18 | 哈尔滨工业大学 | Modularized hybrid excitation space debris magnetic racemization method |
| CN116605424B (en) * | 2023-04-20 | 2023-11-28 | 哈尔滨工业大学 | Modularized hybrid excitation space debris magnetic racemization method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105857647B (en) | 2018-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105857647A (en) | Production method of despinning acceleration magnetic field for low-speed spinning spatial unmagnetized metal debris | |
| CN105717976B (en) | Method for setting alternating magnetic field for despinning spacial non-magnetized metal debris | |
| CN102545436B (en) | Magnetic pole structure of permanent magnet synchronous direct-driven motor and design method thereof | |
| CN106102300B (en) | Enhance the core column structure of superconducting cyclotron center magnetic focusing power | |
| CN106394941A (en) | Method for racemizing space non-magnetized metal debris | |
| CN108288933A (en) | A kind of exchange adjustable magnetic type memory electrical machine segmentation adjustable magnetic control method | |
| CN110022043A (en) | A kind of virtual pole spoke type permanent magnet synchronous motor of integer slot Distributed Winding and its low pulse design method | |
| CN103904851A (en) | Magnetic ring structure, shaft and permanent magnet synchronous motor with magnetic ring structure and shaft | |
| CN205509692U (en) | Changeable adjustable magnetism PMSM rotor of quadrature axis inductance | |
| CN101980420B (en) | Magnetic circuit structure of orientation magnetic field in plastic-magnetic rotor die | |
| CN204465185U (en) | The high speed rotor of motor of two ends counterbore and axle head annular knurl | |
| CN204465187U (en) | The rotor of permanent magnetic synchronous traction machine | |
| CN102214964A (en) | Single-phase self-starting permanent magnet motor rotor and manufacturing method thereof | |
| CN204361868U (en) | The sinusoidal magnetizer of p-m rotor | |
| CN202616901U (en) | Rotor of resultant magnetic field | |
| CN205725209U (en) | A kind of magneto tandem rotor | |
| CN102904359B (en) | A kind ofly be applicable to magneto that entirety magnetizes and preparation method thereof | |
| CN104319060A (en) | Sinusoidal magnetizing method and device for permanent magnet rotor | |
| CN204349618U (en) | A kind of high performance permanent magnetic synchronous motor rotor and apply the rotor punching of this rotor | |
| CN204243939U (en) | A kind of permanent-magnetic synchronous motor rotor and permagnetic synchronous motor | |
| CN109586441A (en) | A kind of acting type motor rotor constructions such as air-gap field | |
| CN202798417U (en) | Hybrid stepping-motor rotor | |
| CN208723743U (en) | A kind of magnet of magnetizing coil set and shoe magnetic pole | |
| CN107370268A (en) | P-m rotor and asynchronous starting permanent magnet synchronous motor with low loss of excitation risk | |
| CN103956839B (en) | Magnet ring structure and use its permagnetic synchronous motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |