CN101054997A - Permanent-magnetic biased axial magnetic bearing - Google Patents
Permanent-magnetic biased axial magnetic bearing Download PDFInfo
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- CN101054997A CN101054997A CNA200710098748XA CN200710098748A CN101054997A CN 101054997 A CN101054997 A CN 101054997A CN A200710098748X A CNA200710098748X A CN A200710098748XA CN 200710098748 A CN200710098748 A CN 200710098748A CN 101054997 A CN101054997 A CN 101054997A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0474—Active magnetic bearings for rotary movement
- F16C32/0485—Active magnetic bearings for rotary movement with active support of three degrees of freedom
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2361/00—Apparatus or articles in engineering in general
- F16C2361/55—Flywheel systems
Abstract
A permanent magnet biased axial magnetic bearing is composed of a stator and a rotor, the stator is composed of four group of stator cores, a permanent magnet and windings, the four group of stator cores compose eight stator poles on circumference direction and are put along +X, -X, +Y, -Y direction, each stator core pole is winded with a winding. An axial magnetic gas gap is formed between the stator and the rotor, an arc permanent magnet is put between two stator core poles in each group of stator core, and a second gas gap is formed on the radial outside by the permanent magnet and two stator core poles of each group of stator core. The invention can realize the axial movement and radial twist control for the magnetic suspension rotor by the four group of stator cores distributed in +X, -X, +Y, -Y direction, and can greatly reduce the axial size of the system. The axial magnetic bearing also has the advantages of low power consume, reliable property and convenient control.
Description
Technical field
The present invention relates to a kind of non-contact magnetically suspension bearing, particularly a kind of permanent-magnetic biased axial magnetic bearing, can be used as the contactless support of rotary component in the astrovehicle such as microminiature satellite, be specially adapted to the non-contact supporting of magnetically levitated flywheel and magnetic suspension control torque gyroscope.
Background technique
Magnetic suspension bearing commonly used divides electromagnetism offset and permanent magnet bias to power up the hybrid magnetic suspension bearing of magnetic control system, the former adopts electric current to produce bias magnetic field, therefore operating current is big, power consumption is big, The latter permanent magnet place of current produces bias magnetic field, main bearing capacity is born in the magnetic field that permanent magnet produces, electromagnetism magnetic field provides auxiliary adjusting bearing capacity, thereby this bearing can reduce to control electric current greatly, reduces the wastage.But existing permanent-magnetic biased axial magnetic bearing, its electromagnetic circuit is through permanent magnet, thereby still power consumption is big, Chinese patent application number: the 200510011272.2 a kind of permanent-magnetic biased axial magnetic bearings that provide, as shown in Figure 1, this structure can be so that electromagnetic circuit process bearing support 1 by excitatory air gap 5, air gap and this excitatory air gap 5 form the loop, avoided electromagnetic circuit directly to pass through permanent magnet 3, thereby it is low in energy consumption, but the axial magnetic bearing of existing all structures, its stationary part and rotor portion all adopt entity structure, thereby still bigger in the stator and the iron loss in the rotor of entity structure.The more important thing is that existing axial magnetic bearing stator structure all is a completely circular structure, can only carry out axial translation control, can't utilize axial magnetic bearing that rotor is radially twisted control, thereby be restricted in applications such as magnetically levitated flywheels to rotor.This is because in applications such as magnetically levitated flywheel, it usually requires the flywheel axial length little and radial length is big, and existing magnetically levitated flywheel, in order to realize radially translation and radially twisting control, need to use in pairs radial direction magnetic bearing, so axial length is long, if axial magnetic bearing self can radially rotate control, radial direction magnetic bearing just can adopt one so, and only rotor is carried out radially translation control, can reduce the axial dimension of flywheel greatly.In a word, existing axial magnetic bearing exists power consumption big and can't radially twist control and be difficult to satisfy the defective of magnetically levitated flywheel to the axial length requirement.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, provide a kind of low in energy consumption, can carry out the axial translation and the permanent-magnetic biased axial magnetic bearing of twisting control radially.
Technical solution of the present invention is: be made up of stationary part and rotor, stationary part is made up of 4 groups of stator cores, permanent magnet and coils, 4 groups of stator cores constitute 8 stator core magnetic poles on the whole circumference direction, and edge+X ,-X ,+Y ,-placement of Y direction, be wound with coil on each stator core magnetic pole, form the axial magnetic air gap between stationary part and the rotor, be placed with arc-shaped permanent magnet between two stator core magnetic poles in every group of stator core, and two stator core magnetic poles of permanent magnet and every group of stator core form interstice at radial outside.
Described permanent magnet adopts radial magnetizing, in order to guarantee that electromagnetic circuit without permanent magnet and reduce the magnetomotive force loss of permanent magnet at interstice, should make the interstice magnetic resistance greater than 2 times of axial magnetic air-gap reluctances and less than the permanent magnet magnetic resistance.In addition, the axial magnetic air gap that forms between described stator core and the rotor is 0.2-0.4mm; Described rotor is the thrust disc that the good material of magnetic property is made, the perhaps part of system's rotating part of making for the good material of magnetic property.Described stator core adopts the good material of magnetic property to be overrided to form.
The principle of such scheme is: permanent magnet provides permanent magnet bias magnetic field to magnetic bearing, bears the suffered axial force of magnetic bearing, and regulating action is played in the magnetic field that field coil produces, and keeps magnetic bearing rotor air gap even, and makes rotor obtain contactless support.Shown in Fig. 2 solid arrow, permanent magnetic circuit of the present invention constitutes the closed-loop path by permanent magnet, stator core magnetic pole, air gap and rotor, forms the main magnetic circuit of magnetic suspension bearing; Shown in Fig. 2 dotted arrow, electromagnetic circuit constitutes the closed-loop path by stator core magnetic pole, air gap, rotor and interstice.Guaranteed that like this electromagnetic circuit is not by permanent magnet inside, reduced the magnetic resistance of electromagnetic circuit, reduced exciting curent, reduced the power consumption of bearing, because stator core partly adopts the lamination compacting to form, and eddy current loss unshakable in one's determination is directly proportional with lamination thickness, and the stator that therefore adopts lamination is than having the power consumption that the axial magnetic bearing with entity structure stator has reduced magnetic bearing now.Axial magnetic bearing of the present invention needs to use in pairs, is defined as I and II respectively, the stator core magnetic pole that guarantees two axial magnetic bearings during installation over against, 4 groups of stator cores that promptly guarantee two axial magnetic bearings simultaneously respectively edge+X ,-X ,+Y and-placement of Y direction.When the rotor to axial magnetic bearing carries out axial translation control, if axial magnetic bearing rotor along z axially+the z direction translational, air gap between axial magnetic bearing I and the rotor reduces, air gap between axial magnetic bearing II and the rotor increases, this moment, directions X and the Y direction coil of axial magnetic bearing I and II fed electric current, make the electromagnetism magnetic flux that the air gap place produces between the stator of axial magnetic bearing I and rotor offset permanent magnet flux, simultaneously the electromagnetism magnetic flux that the air gap place produces between the stator of axial magnetic bearing II and rotor superposes with permanent magnet flux, makes rotor return to the equilibrium position; In like manner, when axial magnetic bearing rotor along z axially-during the z direction translational, air gap between axial magnetic bearing II and the rotor reduces, air gap between axial magnetic bearing I and the rotor increases, this moment, directions X and the Y direction coil of axial magnetic bearing I and II fed electric current, make the electromagnetism magnetic flux that the air gap place produces between the stator of axial magnetic bearing I and rotor superpose with permanent magnet flux, simultaneously the electromagnetism magnetic flux that the air gap place produces between the stator of axial magnetic bearing II and rotor is offset permanent magnet flux, makes rotor return to the equilibrium position; When axial magnetic bearing rotor is radially twisted control, if axial magnetic bearing rotor twists around directions X owing to disturbance, the stator core magnetic pole of axial magnetic bearing I+Y direction and the magnetic air gap between the rotor are reduced, the stator core magnetic pole of-Y direction and the magnetic air gap between the rotor increase, and the stator of axial magnetic bearing II+Y direction and the magnetic air gap between the rotor increase, the stator core magnetic pole of-Y direction and the magnetic air gap between the rotor reduce, make the stator core pole coil of axial magnetic bearing I Y direction and axial magnetic bearing II Y direction feed electric current by the axial magnetic bearing controller this moment, make the electromagnetism magnetic flux that the air gap place produces between the stator core magnetic pole of axial magnetic bearing I+Y direction and the rotor offset permanent magnet flux, the electromagnetism magnetic flux that the air gap place produces between-Y direction stator core magnetic pole and rotor superposes with permanent magnet flux, the electromagnetism magnetic flux of the stator core magnetic pole of axial magnetic bearing II+Y direction and the generation of the air gap place between the rotor and permanent magnet flux stack simultaneously, the electromagnetism magnetic flux that the air gap place produces between-Y direction stator core magnetic pole and the rotor is offset permanent magnet flux, make rotor return to original equilibrium position, realize the twisting control of rotor around directions X.In like manner, when axial magnetic bearing rotor twists around the Y direction owing to disturbance, the stator core magnetic pole of axial magnetic bearing I+X direction and the magnetic air gap between the rotor are reduced, the stator core magnetic pole of-directions X and the magnetic air gap between the rotor increase, and the stator of axial magnetic bearing II+X direction and the magnetic air gap between the rotor increase, the stator core magnetic pole of-directions X and the magnetic air gap between the rotor reduce, make the stator core pole coil of axial magnetic bearing I directions X and axial magnetic bearing IIX direction feed electric current by the axial magnetic bearing controller this moment, make the electromagnetism magnetic flux that the air gap place produces between the stator core magnetic pole of axial magnetic bearing I+X direction and the rotor offset permanent magnet flux, the electromagnetism magnetic flux that the air gap place produces between-directions X stator core magnetic pole and rotor superposes with permanent magnet flux, the electromagnetism magnetic flux of the stator core magnetic pole of axial magnetic bearing II+X direction and the generation of the air gap place between the rotor and permanent magnet flux stack simultaneously, the electromagnetism magnetic flux that the air gap place produces between-directions X stator core magnetic pole and the rotor is offset permanent magnet flux, make rotor return to original equilibrium position, realize the twisting control of rotor around the Y direction.
The present invention's advantage compared with prior art is: the present invention is owing to adopt permanent magnetic field as bias magnetic field, compare with the traditional electrical magnetic bearing and to have eliminated the bias current that in coil current, accounts for fundamental component, reduced winding copper loss and the loss of control power amplifier, therefore low in energy consumption.Compare with existing permanent magnet biased magnetic bearing, the stationary part of permanent-magnetic biased axial magnetic bearing of the present invention has adopted 4 groups of stator lasmination iron cores, has therefore further reduced the magnetic bearing power consumption.Because the present invention adopts 4 groups of 8 magnetic pole of the stator on the stator cores formation whole circumference direction, and edge+X ,-X ,+Y ,-placement of Y direction, thereby the axial translation that both can realize rotor is controlled, also can realize the radially twisting control of rotor, this makes the radial direction magnetic bearing of existing magnetic bearing-supported flywheel system or suspension control moment gyro system only use one, and only realize that radially translation control gets final product, and has reduced the axial dimension of magnetically levitated flywheel or magnetic suspension control torque gyroscope greatly.
Description of drawings
Fig. 1 is the permanent-magnetic biased axial magnetic bearing sectional view of patent applied for.
Fig. 2 is a permanent-magnetic biased axial magnetic bearing axial, cross-sectional view of the present invention.
Fig. 3 is a permanent-magnetic biased axial magnetic bearing end view drawing of the present invention.
Structural drawing when Fig. 4 is a permanent-magnetic biased axial magnetic bearing as installed of the present invention, wherein (a) is axial, cross-sectional view, (b) is end view drawing.
Fig. 5 is the permanent magnet biased magnetic bearing axial, cross-sectional view of another kind of form of the present invention.
Embodiment
As shown in Figures 2 and 3, the present invention is made up of stationary part and rotor 1, stationary part is made up of 4 groups of stator cores 4, permanent magnet 3 and coil 5,4 groups of 8 stator core magnetic poles that stator core 4 constitutes on the whole circumference direction, and edge+X ,-X ,+Y ,-placement of Y direction, for the sectional area that increases the stator core magnetic pole to improve the bearing capacity of axial magnetic bearing, the area of stator core magnetic pole is made arc surface.Be wound with coil 5 on each stator core magnetic pole, form axial magnetic air gap 6 between stationary part and the rotor, be placed with arc-shaped permanent magnet 3 between two stator core magnetic poles in every group of stator core 4, and two stator core magnetic poles of permanent magnet 3 and every group of stator core 4 form interstice 2 at radial outside.Wherein stator core 4 is 0.2-0.4mm with the axial magnetic air gap 6 that rotor 1 forms.In order to guarantee that electromagnetic circuit without permanent magnet and reduce permanent magnet in the loss of the magnetomotive force of interstice, should make the interstice magnetic resistance greater than 2 times of axial magnetic air-gap reluctances and less than the permanent magnet magnetic resistance.Axial magnetic bearing of the present invention needs to use in pairs, is defined as I and II respectively, the stator core magnetic pole that guarantees two axial magnetic bearings during installation over against, 4 groups of stator cores that promptly guarantee two axial magnetic bearings simultaneously respectively edge+X ,-X ,+Y and-placement of Y direction.When the rotor to axial magnetic bearing carries out axial translation control, if axial magnetic bearing rotor along z axially+the z direction translational, air gap between axial magnetic bearing I and the rotor reduces, air gap between axial magnetic bearing II and the rotor increases, this moment, directions X and the Y direction coil of axial magnetic bearing I and II fed electric current, make the electromagnetism magnetic flux that the air gap place produces between the stator of axial magnetic bearing I and rotor offset permanent magnet flux, simultaneously the electromagnetism magnetic flux that the air gap place produces between the stator of axial magnetic bearing II and rotor superposes with permanent magnet flux, makes rotor return to the equilibrium position; In like manner, when axial magnetic bearing rotor along z axially-during the z direction translational, air gap between axial magnetic bearing II and the rotor reduces, air gap between axial magnetic bearing I and the rotor increases, this moment, directions X and the Y direction coil of axial magnetic bearing I and II fed electric current, make the electromagnetism magnetic flux that the air gap place produces between the stator of axial magnetic bearing I and rotor superpose with permanent magnet flux, simultaneously the electromagnetism magnetic flux that the air gap place produces between the stator of axial magnetic bearing II and rotor is offset permanent magnet flux, makes rotor return to the equilibrium position; When axial magnetic bearing rotor is radially twisted control, if axial magnetic bearing rotor twists around directions X owing to disturbance, the stator core magnetic pole of axial magnetic bearing I+Y direction and the magnetic air gap between the rotor are reduced, the stator core magnetic pole of-Y direction and the magnetic air gap between the rotor increase, and the stator of axial magnetic bearing II+Y direction and the magnetic air gap between the rotor increase, the stator core magnetic pole of-Y direction and the magnetic air gap between the rotor reduce, make the stator core pole coil of axial magnetic bearing I Y direction and axial magnetic bearing II Y direction feed electric current by the axial magnetic bearing controller this moment, make the electromagnetism magnetic flux that the air gap place produces between the stator core magnetic pole of axial magnetic bearing I+Y direction and the rotor offset permanent magnet flux, the electromagnetism magnetic flux that the air gap place produces between-Y direction stator core magnetic pole and rotor superposes with permanent magnet flux, the electromagnetism magnetic flux of the stator core magnetic pole of axial magnetic bearing II+Y direction and the generation of the air gap place between the rotor and permanent magnet flux stack simultaneously, the electromagnetism magnetic flux that the air gap place produces between-Y direction stator core magnetic pole and the rotor is offset permanent magnet flux, make rotor return to original equilibrium position, realize the twisting control of rotor around directions X.In like manner, when axial magnetic bearing rotor twists around the Y direction owing to disturbance, the stator core magnetic pole of axial magnetic bearing I+X direction and the magnetic air gap between the rotor are reduced, the stator core magnetic pole of-directions X and the magnetic air gap between the rotor increase, and the stator of axial magnetic bearing II+X direction and the magnetic air gap between the rotor increase, the stator core magnetic pole of-directions X and the magnetic air gap between the rotor reduce, make the stator core pole coil of axial magnetic bearing I directions X and axial magnetic bearing II directions X feed electric current by the axial magnetic bearing controller this moment, make the electromagnetism magnetic flux that the air gap place produces between the stator core magnetic pole of axial magnetic bearing I+X direction and the rotor offset permanent magnet flux, the electromagnetism magnetic flux that the air gap place produces between-directions X stator core magnetic pole and rotor superposes with permanent magnet flux, the electromagnetism magnetic flux of the stator core magnetic pole of axial magnetic bearing II+X direction and the generation of the air gap place between the rotor and permanent magnet flux stack simultaneously, the electromagnetism magnetic flux that the air gap place produces between-directions X stator core magnetic pole and the rotor is offset permanent magnet flux, make rotor return to original equilibrium position, realize the twisting control of rotor around the Y direction.
The used stator core 4 of the present invention can form with magnetic property good electric thin steel sheet such as magnetic material punching presses such as electrical steel plate DR510, DR470, DW350,1J50,1J79 or the silicon steel thin belt system of changing; The thrust disc that rotor 1 is made for the good material of magnetic property such as electrical pure iron, 1J50,1J79 etc., the perhaps part of system's rotating part of making for the good material of magnetic property such as electrical pure iron, S06 steel etc.; The material of permanent magnet 2 is good rare-earth permanent magnet of magnetic property or ferrite permanent magnet, and permanent magnet 2 is a radial magnetizing, and paint-dipping drying forms after the good electromagnetic wire coiling of field coil 5 usefulness conductions.
In actual applications, the axial magnetic bearing stator outside as shown in Figure 2 will be equipped with bearing support, and as shown in Figure 4,7 is bearing support among the figure, selects for use non-magnet material to make, as copper, aluminium, titanium alloy etc.Fig. 4 (a) is the axial, cross-sectional view that has the permanent-magnetic biased axial magnetic bearing of the present invention of bearing support, Fig. 4 (b) is for having the end view drawing of permanent-magnetic biased axial magnetic bearing of the present invention of bearing support, adopt among the figure screw and restraint zone will along+X ,-X ,+Y ,-4 groups of stator cores that the Y direction is placed fix.
Except axial magnetic bearing sectional view shown in Figure 2, also permanent magnet 3 and stator core 4 can be formed interstice 2 at radially inner side, as shown in Figure 5.
The content that is not described in detail in the specification of the present invention belongs to related domain professional and technical personnel's known prior art.
Claims (7)
1, a kind of permanent-magnetic biased axial magnetic bearing, it is characterized in that: form by stationary part and rotor (1), stationary part is by 4 groups of stator cores (4), permanent magnet (3) and coil (5) are formed, 4 groups of stator cores (4) constitute 8 stator core magnetic poles on the whole circumference direction, and edge+X,-X, + Y,-Y direction is placed, be wound with coil (5) on each stator core magnetic pole, form axial magnetic air gap (6) between stationary part and the rotor, be placed with arc-shaped permanent magnet (3) between two stator core magnetic poles in every group of stator core (4), and two stator core magnetic poles of permanent magnet (3) and every group of stator core (4) form interstice (2) at radial outside.
2, permanent-magnetic biased axial magnetic bearing according to claim 1 is characterized in that: described permanent magnet (3) is a radial magnetizing.
3, permanent-magnetic biased axial magnetic bearing according to claim 1 is characterized in that: the axial magnetic air gap (6) that forms between described stator core (4) and the rotor (1) is 0.2-0.4mm.
4, permanent-magnetic biased axial magnetic bearing according to claim 1 is characterized in that: described permanent magnet (3) adopts rare earth permanent-magnetic material or ferrite permanent-magnet materials to make.
5, permanent-magnetic biased axial magnetic bearing according to claim 1 is characterized in that: described stator core (4) adopts the good material of magnetic property to be overrided to form.
6, permanent-magnetic biased axial magnetic bearing according to claim 1 is characterized in that: the thrust disc that described rotor (1) is made for the good material of magnetic property, the perhaps part of system's rotating part of making for the good material of magnetic property.
7, permanent-magnetic biased axial magnetic bearing according to claim 1 is characterized in that: described axial magnetic bearing needs to use in pairs, and rotor (1) is carried out axial translation control and radially twisting control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710098748XA CN100487257C (en) | 2007-04-26 | 2007-04-26 | Permanent-magnetic biased axial magnetic bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710098748XA CN100487257C (en) | 2007-04-26 | 2007-04-26 | Permanent-magnetic biased axial magnetic bearing |
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| Publication Number | Publication Date |
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| CN101054997A true CN101054997A (en) | 2007-10-17 |
| CN100487257C CN100487257C (en) | 2009-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB200710098748XA Expired - Fee Related CN100487257C (en) | 2007-04-26 | 2007-04-26 | Permanent-magnetic biased axial magnetic bearing |
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| CN (1) | CN100487257C (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101771308A (en) * | 2008-12-31 | 2010-07-07 | 张玉宝 | Magnetic levitation rotor support system, magnetic levitation bearing and magnetic biasing weight reducing device |
| CN102392852A (en) * | 2011-11-03 | 2012-03-28 | 贾新涛 | Axial magnetic bearing |
| CN102537048A (en) * | 2012-02-08 | 2012-07-04 | 南京信息工程大学 | Axial magnetic bearing capable of controlling radial twisting |
| CN103758865A (en) * | 2014-01-09 | 2014-04-30 | 西安交通大学 | Permanent magnet biased unilateral axial magnetic suspension bearing |
| CN109229426A (en) * | 2018-11-26 | 2019-01-18 | 北京航空航天大学 | A kind of five degree of freedom double-frame magnetic suspension control moment gyro |
| CN109236858A (en) * | 2018-11-26 | 2019-01-18 | 谢晓旋 | A kind of Three Degree Of Freedom axial magnetic bearing |
| CN110285142A (en) * | 2019-06-04 | 2019-09-27 | 清华大学 | The thrust magnetic suspension bearing of semi-open type |
| CN110661348A (en) * | 2018-06-28 | 2020-01-07 | 浙江迪堡智能科技有限公司 | 65000-rotation permanent magnet magnetic suspension high-speed motor system |
| CN111828475A (en) * | 2020-06-22 | 2020-10-27 | 北京控制工程研究所 | Radial magnetic bearing structure and multi-degree-of-freedom magnetic suspension mechanism comprising same |
| CN112228279A (en) * | 2019-06-30 | 2021-01-15 | 北京金风科创风电设备有限公司 | Generator and wind generating set |
| CN112366911A (en) * | 2020-09-27 | 2021-02-12 | 合肥珀利机电设备有限公司 | Permanent magnet axial flux magnetic suspension motor and fan |
| CN113285558A (en) * | 2021-04-22 | 2021-08-20 | 东南大学 | Bias magnetic field adjustable force balance type stator permanent magnet motor magnetic bearing |
-
2007
- 2007-04-26 CN CNB200710098748XA patent/CN100487257C/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101771308A (en) * | 2008-12-31 | 2010-07-07 | 张玉宝 | Magnetic levitation rotor support system, magnetic levitation bearing and magnetic biasing weight reducing device |
| CN101771308B (en) * | 2009-04-26 | 2015-12-16 | 张玉宝 | A kind of magnetic suspension rotor support system and magnetic suspension bearing and magnetic bias weight reducing device |
| CN102392852A (en) * | 2011-11-03 | 2012-03-28 | 贾新涛 | Axial magnetic bearing |
| CN102392852B (en) * | 2011-11-03 | 2014-05-14 | 北方工业大学 | Axial magnetic bearing |
| CN102537048A (en) * | 2012-02-08 | 2012-07-04 | 南京信息工程大学 | Axial magnetic bearing capable of controlling radial twisting |
| CN103758865A (en) * | 2014-01-09 | 2014-04-30 | 西安交通大学 | Permanent magnet biased unilateral axial magnetic suspension bearing |
| CN110661348A (en) * | 2018-06-28 | 2020-01-07 | 浙江迪堡智能科技有限公司 | 65000-rotation permanent magnet magnetic suspension high-speed motor system |
| CN109229426B (en) * | 2018-11-26 | 2021-09-17 | 北京航空航天大学 | Five-freedom-degree double-frame magnetic suspension control moment gyroscope |
| CN109229426A (en) * | 2018-11-26 | 2019-01-18 | 北京航空航天大学 | A kind of five degree of freedom double-frame magnetic suspension control moment gyro |
| CN109236858A (en) * | 2018-11-26 | 2019-01-18 | 谢晓旋 | A kind of Three Degree Of Freedom axial magnetic bearing |
| CN110285142A (en) * | 2019-06-04 | 2019-09-27 | 清华大学 | The thrust magnetic suspension bearing of semi-open type |
| CN112228279A (en) * | 2019-06-30 | 2021-01-15 | 北京金风科创风电设备有限公司 | Generator and wind generating set |
| CN112228279B (en) * | 2019-06-30 | 2023-03-03 | 北京金风科创风电设备有限公司 | Generator and wind generating set |
| CN111828475A (en) * | 2020-06-22 | 2020-10-27 | 北京控制工程研究所 | Radial magnetic bearing structure and multi-degree-of-freedom magnetic suspension mechanism comprising same |
| CN112366911A (en) * | 2020-09-27 | 2021-02-12 | 合肥珀利机电设备有限公司 | Permanent magnet axial flux magnetic suspension motor and fan |
| CN112366911B (en) * | 2020-09-27 | 2021-09-24 | 江苏中工高端装备研究院有限公司 | Permanent magnet axial flux magnetic suspension motor and fan |
| CN113285558A (en) * | 2021-04-22 | 2021-08-20 | 东南大学 | Bias magnetic field adjustable force balance type stator permanent magnet motor magnetic bearing |
| CN113285558B (en) * | 2021-04-22 | 2022-04-29 | 东南大学 | Bias magnetic field adjustable force balance type stator permanent magnet motor magnetic bearing |
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| CN100487257C (en) | 2009-05-13 |
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Granted publication date: 20090513 Termination date: 20180426 |