CN108374837B - A kind of three magnetic circuit Lorentz force magnetic bearings - Google Patents
A kind of three magnetic circuit Lorentz force magnetic bearings Download PDFInfo
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- CN108374837B CN108374837B CN201810118697.0A CN201810118697A CN108374837B CN 108374837 B CN108374837 B CN 108374837B CN 201810118697 A CN201810118697 A CN 201810118697A CN 108374837 B CN108374837 B CN 108374837B
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- magnet steel
- interior
- axial charging
- charging magnet
- rotor component
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 159
- 239000010959 steel Substances 0.000 claims abstract description 159
- 229910000828 alnico Inorganic materials 0.000 claims abstract description 65
- 230000004907 flux Effects 0.000 claims abstract description 33
- 230000000903 blocking Effects 0.000 claims abstract description 12
- 238000004804 winding Methods 0.000 claims abstract description 8
- 210000002356 Skeleton Anatomy 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000725 suspension Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- F16C2202/00—Solid materials defined by their properties
- F16C2202/30—Electric properties; Magnetic properties
- F16C2202/40—Magnetic
- F16C2202/42—Magnetic soft-magnetic, ferromagnetic
Abstract
The invention discloses a kind of three magnetic circuit Lorentz force magnetic bearings, it is mainly made of internal rotor component, outer rotor component and stator module, internal rotor component specifically includes that interior upper axial charging magnet steel, interior middle axial charging magnet steel, interior lower axial charging magnet steel, interior upper radial magnetizing ring alnico, interior lower radial magnetizing ring alnico, interior magnetism-isolating loop；Outer rotor component specifically includes that outside upper axial charging magnet steel, outer middle axial charging magnet steel, outer lower axial charging magnet steel, outside upper radial magnetizing ring alnico, outer lower radial magnetizing ring alnico, outer magnetism-isolating loop；Stator module mainly includes cup-shaped stator skeleton and winding coil.Magnet steel work in combination that the axial domain magnetizes magnet steel and radial blocking magnetizes, it is three flux circuits by traditional single flux circuit topology, achieve the effect that promote magnetic field linear degree and magnetic field strength by circuit magnetic field superposition two-by-two, using the axial domain magnetize magnet steel compensation radial blocking magnet steel stitching portion magnetic field discontinuity, can be effectively reduced power consumption, promoted control precision.
Description
Technical field
The present invention relates to a kind of magnetic bearings, more particularly to a kind of three magnetic circuit Lorentz force magnetic bearings.
Background technique
It is calculated according to electromagnetic force and magnetic bearing can be divided into reluctance type magnetic bearing and Lorentz force by the difference of representation method
Magnetic bearing.The former is changed electromagnetic force size and Orientation and is realized by the air-gap reluctance size between control magnetic bearing stator and rotor
The contactless suspension of rotor；The latter changes electromagnetism by the size and Orientation for the stator coil electric current being placed in stationary magnetic field
Power size and Orientation realizes rotor suspension.After Lorentz force magnetic bearing design of scheme, air-gap reluctance and magnetomotive force are constant,
Flux density size and Orientation is constant, and coil effective length is definite value, the electromagnetic force that conductive coil generates only with it is current related and theoretical
It is upper in a linear relationship, there is the preferable linearity, thus Lorentz force magnetic bearing is generally adapted for high-precision control.
A kind of outer rotor Lorentz force axial magnetic bearing described in granted patent ZL 201510146044.X uses single-edge magnetic
Steel construction has the characteristics that structure is simple, good reliability.A kind of bimorph transducer described in granted patent ZL 201510144912.0
Three Degree Of Freedom Lorentz force magnetic bearing can be realized axial translation and radial two-freedom deflection control, and be translatable control and deflection
Control room is full decoupled, improves control performance.A kind of two-freedom long-range navigation described in granted patent ZL 201510243920.0
Hereby power outer rotor spherical surface magnetic bearing uses spherical shell shape air gap, and rotor can be deflected with larger angle.But it is all made of in above-mentioned patent point
The radial magnetizing ring alnico that block is spliced is single flux circuit, and magnetic flux density is smaller at working gas gap, considerably increases coil
Power consumption, while magnet steel stitching portion magnetic field is discontinuous, constrains the promotion of control precision.
Summary of the invention
The object of the present invention is to provide a kind of three magnetic circuit Lorentz force magnetic bearings, magnetized magnet steel and radial direction using the axial domain
Piecemeal magnetizes the mode of magnet steel work in combination, is three flux circuits by traditional single flux circuit topology.
The purpose of the present invention is what is be achieved through the following technical solutions:
Three magnetic circuit Lorentz force magnetic bearings of the invention, mainly by internal rotor component, outer rotor component and stator module three
Part forms, and the internal rotor component specifically includes that interior upper axial charging magnet steel, interior middle axial charging magnet steel, interior lower axial direction are filled
Magnetic magnet steel, interior upper radial magnetizing ring alnico, interior lower radial magnetizing ring alnico, interior magnetism-isolating loop；The outer rotor component specifically includes that outside upper
Axial charging magnet steel, outer middle axial charging magnet steel, outer lower axial charging magnet steel, outside upper radial magnetizing ring alnico, outer lower radial magnetizing
Magnet steel, outer magnetism-isolating loop；The stator module mainly includes cup-shaped stator skeleton and winding coil；The internal rotor component is located at fixed
Sub-component radially inner side, interior magnetism-isolating loop are located at the inner radial of internal rotor component, and interior upper axial charging magnet steel is located at internal rotor group
Part radially outer upper end, interior middle axial charging magnet steel are located among internal rotor component radially outer, interior lower axial charging magnet steel position
In internal rotor component radially outer lower end, interior upper radial magnetizing ring alnico is located at internal rotor component radially outer, interior upper axial charging
Between magnet steel and interior middle axial charging magnet steel, interior lower radial magnetizing ring alnico is located at internal rotor component radially outer, interior middle axial direction is filled
Between magnetic magnet steel and interior lower axial charging magnet steel；The outer rotor component is located at stator module radial outside, and outer magnetism-isolating loop is located at
The radially outer of outer rotor component, outside upper axial charging magnet steel are located at outer rotor component inner radial upper end, outer middle axial charging
Magnet steel is located among outer rotor component inner radial, and outer lower axial charging magnet steel is located at outer rotor component inner radial lower end, outside
Upper radial magnetizing ring alnico is located between outer rotor component inner radial, outside upper axial charging magnet steel and outer middle axial charging magnet steel,
Outside lower radial magnetizing ring alnico be located at outer rotor component inner radial, outer middle axial charging magnet steel and outer lower radial magnetizing ring alnico it
Between.
As seen from the above technical solution provided by the invention, three magnetic circuits Lorentz force magnetic provided in an embodiment of the present invention
Bearing, due to magnetizing magnet steel using the axial domain and radial blocking magnetizes the organization plan of magnet steel work in combination, by traditional single magnetic
Logical loop topology is three flux circuits, and the effect for promoting magnetic field linear degree and magnetic field strength is reached by circuit magnetic field superposition two-by-two
Fruit, using the axial domain magnetize magnet steel compensation radial blocking magnet steel stitching portion magnetic field discontinuity, can be effectively reduced long-range navigation
The hereby power consumption of power magnetic bearing, promotion control precision.
Detailed description of the invention
Fig. 1 is the revolved sectional view of three magnetic circuits Lorentz force magnetic bearing provided in an embodiment of the present invention；
Fig. 2 a is that the axial domain in the embodiment of the present invention magnetizes the cross-sectional view of magnet steel；
Fig. 2 b is that the axial domain in the embodiment of the present invention magnetizes the three-dimensional schemes figure of magnet steel；
Fig. 3 a, Fig. 3 b are respectively the fan ring magnet steel vertical view and cross-sectional view that the radial blocking in the embodiment of the present invention magnetizes；
Fig. 4 is three magnetic circuit finite element two dimension magnetic circuit distribution maps in the embodiment of the present invention.
Specific embodiment
The embodiment of the present invention will be described in further detail below.What is be not described in detail in the embodiment of the present invention is interior
Appearance belongs to the prior art well known to professional and technical personnel in the field.
Three magnetic circuit Lorentz force magnetic bearings of the invention, preferable specific embodiment is:
It is mainly made of internal rotor component, outer rotor component and stator module three parts, the internal rotor component mainly wraps
It includes: interior upper axial charging magnet steel, interior middle axial charging magnet steel, interior lower axial charging magnet steel, interior upper radial magnetizing ring alnico, interior lower diameter
To the magnet steel that magnetizes, interior magnetism-isolating loop；The outer rotor component specifically include that outside upper axial charging magnet steel, outer middle axial charging magnet steel,
Lower axial charging magnet steel, outside upper radial magnetizing ring alnico, outer lower radial magnetizing ring alnico, outer magnetism-isolating loop outside；The stator module is main
Including cup-shaped stator skeleton and winding coil；The internal rotor component is located at stator module radially inner side, and interior magnetism-isolating loop is located at interior
The inner radial of rotor assembly, interior upper axial charging magnet steel are located at internal rotor component radially outer upper end, interior middle axial charging magnetic
Steel is located among internal rotor component radially outer, and interior lower axial charging magnet steel is located at internal rotor component radially outer lower end, it is interior on
Radial magnetizing ring alnico is located between internal rotor component radially outer, interior upper axial charging magnet steel and interior middle axial charging magnet steel, interior
Lower radial magnetizing ring alnico is located between internal rotor component radially outer, interior middle axial charging magnet steel and interior lower axial charging magnet steel；
The outer rotor component is located at stator module radial outside, and outer magnetism-isolating loop is located at the radially outer of outer rotor component, outside upper axial direction
The magnet steel that magnetizes is located at outer rotor component inner radial upper end, and outer middle axial charging magnet steel is located in outer rotor component inner radial
Between, outer lower axial charging magnet steel is located at outer rotor component inner radial lower end, and outside upper radial magnetizing ring alnico is located at outer rotor component
Between inner radial, outside upper axial charging magnet steel and outer middle axial charging magnet steel, outer lower radial magnetizing ring alnico is located at outer rotor group
Between part inner radial, outer middle axial charging magnet steel and outer lower radial magnetizing ring alnico.
The interior upper axial charging magnet steel, interior middle axial charging magnet steel, interior lower axial charging magnet steel, outside upper axial charging
Magnet steel, outer middle axial charging magnet steel, outer lower axial charging magnet steel are annulus magnet steel, using domain axial charging.
The interior upper radial magnetizing ring alnico, interior lower radial magnetizing ring alnico, outside upper radial magnetizing ring alnico, outer lower radial magnetizing
Magnet steel is spliced by several fan ring magnet steel, is magnetized using radial blocking.
Interior upper axial charging magnet steel, interior upper radial magnetizing ring alnico, outside upper axial charging magnet steel and the outside upper radial direction is filled
Magnetic magnet steel constitutes the first flux circuit.
The interior upper radial magnetizing ring alnico, interior middle axial charging magnet steel, interior lower radial magnetizing ring alnico, outside upper radial magnetizing
Magnet steel, outer middle axial charging magnet steel, outer lower radial magnetizing ring alnico constitute the second flux circuit.
The interior lower radial magnetizing ring alnico, interior lower axial charging magnet steel, outer lower radial magnetizing ring alnico, outer lower axial charging
Magnet steel constitutes third flux circuit.
At first flux circuit and the second flux circuit magnetic field superposition, the second flux circuit and third flux circuit
It is the working gas gap of winding coil at magnetic field superposition.
Three magnetic circuit Lorentz force magnetic bearings of the invention, axial domain magnet steel and the radial blocking magnet steel that magnetizes that magnetizes combine work
Traditional single flux circuit topology is three flux circuits, passes through circuit magnetic field superposition two-by-two by the novel Lorentz force magnetic bearing made
Achieve the effect that promote magnetic field linear degree and magnetic field strength, be magnetized magnet steel compensation radial blocking magnet steel stitching portion using the axial domain
The discontinuity in magnetic field can be effectively reduced power consumption, promote control precision.
The advantages of the present invention over the prior art are that:
The present invention, will due to magnetizing magnet steel using the axial domain and radial blocking magnetizes the organization plan of magnet steel work in combination
Traditional list flux circuit topology is three flux circuits, reaches promotion magnetic field linear degree by circuit magnetic field superposition two-by-two and magnetic field is strong
The effect of degree, using the axial domain magnetize magnet steel compensation radial blocking magnet steel stitching portion magnetic field discontinuity, can effectively drop
The power consumption of low Lorentz force magnetic bearing promotes control precision.
Specific embodiment:
As shown in Figures 1 to 4, a kind of three magnetic circuit Lorentz force magnetic bearings, mainly by internal rotor component, outer rotor component and
Stator module three parts composition；Internal rotor component specifically include that interior upper axial charging magnet steel 2A, interior middle axial charging magnet steel 2B,
Interior lower axial charging magnet steel 2C, interior upper radial magnetizing ring alnico 4A), interior lower radial magnetizing ring alnico 4B, interior magnetism-isolating loop 3；Outer rotor group
Part specifically includes that outside upper axial charging magnet steel 7A, outer middle axial charging magnet steel 7B, outer lower axial charging magnet steel 7C, outside upper radial direction
Magnetize magnet steel 6A, outer lower radial magnetizing ring alnico 6B, outer magnetism-isolating loop 8；Stator module mainly includes cup-shaped stator skeleton 1 and winding wire
Circle 5；Internal rotor component is located at stator module radially inner side, and interior magnetism-isolating loop 3 is located at the inner radial of internal rotor component, interior upper axial direction
The magnet steel 2A that magnetizes is located at internal rotor component radially outer upper end, and interior middle axial charging magnet steel 2B is located at internal rotor component radially outer
Centre, interior lower axial charging magnet steel 2C are located at internal rotor component radially outer lower end, and interior upper radial magnetizing ring alnico 4A is located at interior turn
Between sub-component radially outer, interior upper axial charging magnet steel 2A and interior middle axial charging magnet steel 2B, interior lower radial magnetizing ring alnico 4B
Between internal rotor component radially outer, interior middle axial charging magnet steel 2B and interior lower axial charging magnet steel 2C；Outer rotor component
Positioned at stator module radial outside, outer magnetism-isolating loop 8 is located at the radially outer of outer rotor component, and outside upper axial charging magnet steel 7A is located at
Outer rotor component inner radial upper end, outer middle axial charging magnet steel 7B are located among outer rotor component inner radial, outer lower axial direction
The magnet steel 7C that magnetizes is located at outer rotor component inner radial lower end, and it is inside that outside upper radial magnetizing ring alnico 6A is located at outer rotor component diameter
Between portion, outside upper axial charging magnet steel 7A and outer middle axial charging magnet steel 7B, outer lower radial magnetizing ring alnico 6B is located at outer rotor group
Between part inner radial, outer middle axial charging magnet steel 7B and outer lower radial magnetizing ring alnico 6B.
Interior upper axial charging magnet steel 2A, interior middle axial charging magnet steel 2B, interior lower axial charging magnet steel 2C, outside upper axial charging
Magnet steel 7A, outer middle axial charging magnet steel 7B, outer lower axial charging magnet steel 7C are annulus magnet steel, using domain axial charging.
Interior upper radial magnetizing ring alnico 4A, interior lower radial magnetizing ring alnico 4B, outside upper radial magnetizing ring alnico 6A, outer lower radial magnetizing
Magnet steel 6B is spliced by several fan ring magnet steel, is magnetized using radial blocking.
Interior upper axial charging magnet steel 2A, interior upper radial magnetizing ring alnico 4A, outside upper axial charging magnet steel 7A and outside upper radial direction are filled
Magnetic magnet steel 6A constitutes the first flux circuit.Interior upper radial magnetizing ring alnico 4A, interior middle axial charging magnet steel 2B, interior lower radial magnetizing magnetic
Steel 4B, outside upper radial magnetizing ring alnico 6A, outer middle axial charging magnet steel 7B, outer lower radial magnetizing ring alnico 6B constitute the second magnetic flux and return
Road；Interior lower radial magnetizing ring alnico 4B, interior lower axial charging magnet steel 2C, outer lower radial magnetizing ring alnico 6B, outer lower axial charging magnet steel
7C constitutes third flux circuit.
As shown in figure 4, at the first flux circuit and the second flux circuit magnetic field superposition, the second flux circuit and third magnetic flux
It is the working gas gap of winding coil 5 at the magnetic field superposition of circuit.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Within the technical scope of the present disclosure, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (1)
1. a kind of three magnetic circuit Lorentz force magnetic bearings, mainly by internal rotor component, outer rotor component and stator module three parts group
At, it is characterised in that:
The internal rotor component specifically includes that interior upper axial charging magnet steel (2A), interior middle axial charging magnet steel (2B), interior lower axial direction
It magnetizes magnet steel (2C), interior upper radial magnetizing ring alnico (4A), interior lower radial magnetizing ring alnico (4B), interior magnetism-isolating loop (3)；
The outer rotor component specifically includes that outside upper axial charging magnet steel (7A), outer middle axial charging magnet steel (7B), outer lower axial direction
It magnetizes magnet steel (7C), outside upper radial magnetizing ring alnico (6A), outer lower radial magnetizing ring alnico (6B), outer magnetism-isolating loop (8)；
The stator module mainly includes cup-shaped stator skeleton (1) and winding coil (5)；
The internal rotor component is located at stator module radially inner side, and interior magnetism-isolating loop (3) is located at the inner radial of internal rotor component, interior
Upper axial charging magnet steel (2A) is located at internal rotor component radially outer upper end, and interior middle axial charging magnet steel (2B) is located at internal rotor group
Among part radially outer, interior lower axial charging magnet steel (2C) is located at internal rotor component radially outer lower end, interior upper radial magnetizing magnetic
Steel (4A) is located between internal rotor component radially outer, interior upper axial charging magnet steel (2A) and interior middle axial charging magnet steel (2B),
Interior lower radial magnetizing ring alnico (4B) is located at internal rotor component radially outer, interior middle axial charging magnet steel (2B) and interior lower axial charging
Between magnet steel (2C)；
The outer rotor component is located at stator module radial outside, and outer magnetism-isolating loop (8) is located at the radially outer of outer rotor component, outside
Upper axial charging magnet steel (7A) is located at outer rotor component inner radial upper end, and outer middle axial charging magnet steel (7B) is located at outer rotor group
Among part inner radial, outer lower axial charging magnet steel (7C) is located at outer rotor component inner radial lower end, outside upper radial magnetizing magnetic
Steel (6A) is located between outer rotor component inner radial, outside upper axial charging magnet steel (7A) and outer middle axial charging magnet steel (7B),
Lower radial magnetizing ring alnico (6B) is located at outer rotor component inner radial, outer middle axial charging magnet steel (7B) and outer lower radial magnetizing outside
Between magnet steel (6B)；
It is the interior upper axial charging magnet steel (2A), interior middle axial charging magnet steel (2B), interior lower axial charging magnet steel (2C), outside upper
Axial charging magnet steel (7A), outer middle axial charging magnet steel (7B), outer lower axial charging magnet steel (7C) are annulus magnet steel, and use is whole
Ring axial charging；
The interior upper radial magnetizing ring alnico (4A), interior lower radial magnetizing ring alnico (4B), outside upper radial magnetizing ring alnico (6A), it is outer under
Radial magnetizing ring alnico (6B) is spliced by several fan ring magnet steel, is magnetized using radial blocking；
The interior upper axial charging magnet steel (2A), interior upper radial magnetizing ring alnico (4A), outside upper axial charging magnet steel (7A) and outer
Upper radial magnetizing ring alnico (6A) constitutes the first flux circuit；
It is the interior upper radial magnetizing ring alnico (4A), interior middle axial charging magnet steel (2B), interior lower radial magnetizing ring alnico (4B), outside upper
Radial magnetizing ring alnico (6A), outer middle axial charging magnet steel (7B), outer lower radial magnetizing ring alnico (6B) constitute the second flux circuit；
The interior lower radial magnetizing ring alnico (4B), interior lower axial charging magnet steel (2C), outer lower radial magnetizing ring alnico (6B), it is outer under
Axial charging magnet steel (7C) constitutes third flux circuit；
At first flux circuit and the second flux circuit magnetic field superposition, the second flux circuit and third flux circuit magnetic field
It is the working gas gap of winding coil (5) at superposition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810118697.0A CN108374837B (en) | 2018-02-06 | 2018-02-06 | A kind of three magnetic circuit Lorentz force magnetic bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810118697.0A CN108374837B (en) | 2018-02-06 | 2018-02-06 | A kind of three magnetic circuit Lorentz force magnetic bearings |
Publications (2)
| Publication Number | Publication Date |
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| CN108374837A CN108374837A (en) | 2018-08-07 |
| CN108374837B true CN108374837B (en) | 2019-07-12 |
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| CN201810118697.0A Active CN108374837B (en) | 2018-02-06 | 2018-02-06 | A kind of three magnetic circuit Lorentz force magnetic bearings |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110645269B (en) * | 2019-08-20 | 2020-09-15 | 江苏理工学院 | Self-suspension axial magnetic suspension bearing |
| CN112803602A (en) * | 2020-12-29 | 2021-05-14 | 瑞声精密制造科技(常州)有限公司 | Electronic equipment and wireless charging system |
| CN112803603A (en) * | 2020-12-29 | 2021-05-14 | 瑞声精密制造科技(常州)有限公司 | Electronic equipment and wireless charging system |
| CN113452230B (en) * | 2021-07-02 | 2022-08-02 | 哈尔滨工业大学 | High-thrust-density electromagnetic actuator for nano-satellite deployer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392852B (en) * | 2011-11-03 | 2014-05-14 | 北方工业大学 | Axial magnetic bearing |
| CN104533948B (en) * | 2015-01-13 | 2017-07-25 | 北京航空航天大学 | A kind of passive hybrid magnetic bearing of permanent magnet offset external rotor four-degree-of-freedom master |
| US10767691B2 (en) * | 2015-02-26 | 2020-09-08 | Carrier Corporation | Magnetic bearing |
| CN106895075B (en) * | 2017-04-06 | 2018-12-18 | 北京石油化工学院 | A kind of implicit Lorentz force deflection magnetic bearing of double deflection |
| CN106838004B (en) * | 2017-04-06 | 2018-11-02 | 北京石油化工学院 | A kind of implicit Lorentz force magnetic bearing of Three Degree Of Freedom |
| CN106763187B (en) * | 2017-04-06 | 2018-11-02 | 北京石油化工学院 | A kind of implicit Lorentz force deflection magnetic bearing of the poly- magnetic effect of U-shaped |
| CN107289003B (en) * | 2017-07-14 | 2019-04-19 | 中国人民解放军海军工程大学 | Homopolarity formula permanent magnet offset radial magnetic bearing |
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