CN108361279B - Orthogonal magnetic circuit journal axle one magnetic suspension bearing based on symmetrical self-lubricating flexibility auxiliary bearing structure - Google Patents
Orthogonal magnetic circuit journal axle one magnetic suspension bearing based on symmetrical self-lubricating flexibility auxiliary bearing structure Download PDFInfo
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- CN108361279B CN108361279B CN201810109300.1A CN201810109300A CN108361279B CN 108361279 B CN108361279 B CN 108361279B CN 201810109300 A CN201810109300 A CN 201810109300A CN 108361279 B CN108361279 B CN 108361279B
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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
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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
- F16C32/0459—Details of the magnetic circuit
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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
-
- 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
- F16C32/0493—Active magnetic bearings for rotary movement integrated in an electrodynamic machine, e.g. self-bearing motor
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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
- F16C2380/00—Electrical apparatus
- F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
Abstract
The invention discloses a kind of orthogonal magnetic circuit journal axle one magnetic suspension bearings based on symmetrical self-lubricating flexibility auxiliary bearing structure, the radial direction magnetic bearing coil of the orthogonal magnetic circuit journal axle one magnetic suspension bearing is mounted in the stator tooth group of stator core, it is equipped at the outer disc of stator core there are the two of certain interval radial rigidity magnetic guiding loop, to prevent permanent magnetic circuit short-circuit；Axial magnetic bearing coil is located at the thrust disc of armature spindle, and axial magnetic bearing coil is mounted in the chamber of two magnetic guiding loops formation；The two sides of thrust disc are respectively equipped with the graphite annulus and auxiliary bearing skeleton for playing axial self-lubricating；Radial auxiliary bearing skeleton and graphite internal projecting ring are set in the interior ring cavity of radial compliance magnetic guiding loop, play radial self-lubricating.The present invention is integrated as integrated technological means with radial electromagnetic circuit and radial direction magnetic bearing and auxiliary bearing using axial, solves the low technical problem of traditional magnetic bearing concentricity.
Description
Technical field
The present invention relates to magnetic suspension bearings, more particularly, refer to a kind of based on symmetrical self-lubricating flexibility auxiliary bearing knot
The orthogonal magnetic circuit journal axle one magnetic suspension bearing of structure.
Background technique
Magnetic suspension bearing (Magnetic Bearing) is that rotor suspension is made in aerial to rotor and fixed using magneticaction
There is no Mechanical Contact between son.
" Modeling and Design of 3-DOF Magnetic is please referred to for the structure of magnetic suspension motor
Bearing for High-Speed Motor Including Eddy-Current Effects and Leakage
Effects ", happy rhythm of author etc., in June, 2016, the 6th phase of volume 63, was disclosed in " IEEE TRANSACTIONS ON
INDUSTRIAL ELECTRONICS".Fig. 1 of this document describes a kind of overall structure of typical high speed magnetic suspension motor,
In the right half part of described Fig. 1, formed by auxiliary bearing (Backup bearing) and journal axle one magnetic bearing (3-DOF MB)
The radial support of the high speed magnetic suspension motor.
The shortcomings that conventional maglev bearing and auxiliary bearing are used cooperatively:
1, it is separately fixed on different parts due to magnetic suspension bearing stator from auxiliary bearing, makes magnetic suspension bearing stator
It is extremely difficult to higher concentricity requirement with auxiliary bearing, and then keeps magnetic gap and auxiliary gap asymmetric, to make control system
System is extremely difficult to the high-precision control of magnetic suspension bearing.
2, fierce collision will occur with auxiliary bearing when high speed magnetic suspended rotor unstability, due to conventional mechanical bearings rigidity
Higher and damping is lower, and mechanical bearing ball is easy to be deformed by high-frequency percussion and make auxiliary bearing " stuck ", and then makes high speed
Severe friction occurs for rotor and auxiliary bearing inner ring, and a large amount of frictional heat generation can be such that rotor melts with auxiliary bearing to be welded together, make
High speed magnetic suspension motor is scrapped.
3, the axial length for making high speed magnetic suspension motor of magnetic suspension bearing and auxiliary bearing compares tradition machinery
The length of bearing electric machine is very much (at least 2 times or so), thereby reduces the rigid mode of rotor.
Summary of the invention
In order to improve the anti-unstability ability of high speed magnetic suspension motor and the rigid mode of rotor, and raising control system pair
The control precision of magnetic suspension bearing, the present invention devise a kind of orthogonal magnetic circuit based on symmetrical self-lubricating flexibility auxiliary bearing structure
Journal axle one magnetic suspension bearing.The magnetic suspension bearing is equipped with transverse bearing part and axial bearing part.Magnetic suspension shaft of the present invention
It holds and on the one hand uses the power on coil generating electromagnetic magnetic circuit, on the other hand generate permanent magnetic circuit, and electromagnetic circuit using permanent magnet
It is orthogonal space distribution with permanent magnetic circuit.The permanent magnetic circuit is by flexible auxiliary bearing, using the structure of auxiliary bearing as magnetic axis
The a part for holding magnetic circuit saves the space of magnetic suspension bearing, but also the structure of magnetic bearing and auxiliary bearing can carry out one
Bodyization design, and then magnetic suspension motor overall structure is made to become more compact, reach small size design.
The present invention is a kind of orthogonal magnetic circuit journal axle one magnetic suspension shaft based on symmetrical self-lubricating flexibility auxiliary bearing structure
It holds, it is characterised in that: the orthogonal magnetic circuit journal axle one magnetic suspension bearing is from A axial direction magnetic guiding loop (1A), B axle to magnetic guiding loop
(1D), permanent magnet A (1B), A radially magnetized rigidity magnetic guiding loop (1C), radially magnetized flexibility magnetic guiding loop (2A), B permanent magnet (2B), B
Radially magnetized rigidity magnetic guiding loop (2C), A axial direction auxiliary bearing skeleton (3A), B axle are to auxiliary bearing skeleton (3C), A graphite evagination
Ring (3B), B graphite outer bulge loop (3D), radially magnetized bearing skeleton (4A), graphite internal projecting ring (4B), radially magnetized bearing baffle ring
(4C), radial direction magnetic bearing coil group (5), axial magnetic bearing coil (5A) and stator core (8) composition；
The fine copper coiling that coil and axial magnetic bearing coil (5A) in radial direction magnetic bearing coil group (5) are line footpath 0.5mm；
The center of A axial direction magnetic guiding loop (1A) is equipped with the A central through hole (1A-1) passed through for armature spindle (6)；A is axially led
One end face of magnet ring (1A) is smooth panel, is equipped with AA interior annular from the inside to the outside on the other end of A axial direction magnetic guiding loop (1A)
(1A2), AA cavity (1A3), AA convex rotary table (1A5), AB cavity (1A4), AA outer toroid (1A1), the AB cavity (1A4)
For placing axial magnetic bearing coil (5A), the AA cavity (1A3) is used to place the A axial direction auxiliary bearing skeleton after assembly
The outer bulge loop (3B) of (3A) and A graphite；
B axle is equipped with the O central through hole (1D-1) passed through for armature spindle (6) to the center of magnetic guiding loop (1D)；B axle guide
One end face of magnet ring (1D) is smooth panel, and B axle is equipped with BA interior annular on the other end of magnetic guiding loop (1D) from the inside to the outside
(1D2), BA cavity (1D3), BA convex rotary table (1D5), BB cavity (1D4), BA outer toroid (1D1), the BB cavity (1D4)
For placing axial magnetic bearing coil (5A), the BA cavity (1D3) is used to place the B axle after assembly to auxiliary bearing skeleton
The outer bulge loop (3D) of (3C) and B graphite；
The thrust disc (61) of armature spindle (6) be fastened on A axial direction magnetic guiding loop (1A) AA convex rotary table (1A5) and B axle to
Between the BA convex rotary table (1D5) of magnetic guiding loop (1D)；
Radially magnetized flexibility magnetic guiding loop (2A) is equipped with outer toroid (2A1), interior annular (2A2), multiple triangle through hole
(2A4), triangle through hole (2A4) make between outer toroid (2A1) and interior annular (2A2) that there are the flexible arm of connection (2A3)；It is more
It is separated between a triangle through hole (2A4) by flexible arm (2A3)；
The center of radially magnetized flexibility magnetic guiding loop (2A) is equipped with the D central through hole (2A-1) passed through for armature spindle (6)；
One end face of radially magnetized flexibility magnetic guiding loop (2A) is smooth panel, on the other end of radially magnetized flexibility magnetic guiding loop (2A)
Equipped with convex rotary table (2A5), convex rotary table (2A5) is equipped with tapped blind hole (2A51), in interior dome platform (2A5) and interior annular
Interior ring cavity (2A6) is equipped between (2A2)；Graphite internal projecting ring (4B), radially magnetized bearing are installed in the interior ring cavity (2A6)
Baffle ring (4C) is fixed by screws on the convex rotary table (2A5) of radially magnetized flexibility magnetic guiding loop (2A)；
The center of permanent magnet A (1B) is equipped with the B central through hole (1B-1) passed through for armature spindle (6)；
The center of B permanent magnet (2B) is equipped with the E central through hole (2B-1) passed through for armature spindle (6)；
The center of A radial rigidity magnetic guiding loop (1C) is equipped with C central through hole (1C-1), the ring of A radial rigidity magnetic guiding loop (1C)
Internal side is equipped with A inner baffle ring (1C1)；
The center of B radial rigidity magnetic guiding loop (2C) is equipped with F central through hole (2C-1), the ring of B radial rigidity magnetic guiding loop (2C)
Internal side is equipped with B inner baffle ring (2C1)；
The A inner baffle ring (1C1) of A radial rigidity magnetic guiding loop (1C) and the B inner baffle ring (2C1) of B radial rigidity magnetic guiding loop (2C)
Between for placing the outer discs (8A) of stator core (8)；And A radial rigidity magnetic guiding loop (1C) and B radial rigidity magnetic guiding loop
There are the gap A (9) between (2C)；
The center of A axial direction auxiliary bearing skeleton (3A) is equipped with G central through hole (3A-1)；A axial direction auxiliary bearing skeleton (3A)
An end face be smooth panel, the other end of A axial direction auxiliary bearing skeleton (3A) is equipped with AA rotary table (3A3) and AB rotary table
(3A4)；Multiple AA through-holes passed through for AA graphite column (3B1) are distributed with by even circumferential on the AA rotary table (3A3)
(3A1)；Multiple AB through-holes passed through for AB graphite column (3B2) are distributed with by even circumferential on the AB rotary table (3A4)
(3A2)；
B axle is equipped with I central through hole (3C-1) to the center of auxiliary bearing skeleton (3C)；B axle is to auxiliary bearing skeleton (3C)
An end face be smooth panel, B axle to the other end of auxiliary bearing skeleton (3C) be equipped with BA rotary table (3C3) and BB rotary table
(3C4)；Multiple BA through-holes passed through for BA graphite column (3D1) are distributed with by even circumferential on the BA rotary table (3C3)
(3C1)；Multiple BB through-holes passed through for BB graphite column (3D2) are distributed with by even circumferential on the BB rotary table (3C4)
(3C2)；
The center of the outer bulge loop (3B) of A graphite is equipped with H central through hole (3B-1), and H central through hole (3B-1) is used for armature spindle (6)
It passes through；One end face of the outer bulge loop (3B) of A graphite is smooth panel, and the other end of the outer bulge loop (3B) of A graphite is equipped with by circumference point
The AA graphite column (3B1) and AB graphite column (3B2) of cloth；The AA graphite column (3B1) is mounted on A axial direction auxiliary bearing skeleton
In the AA of (3A) in the AA through-hole (3A1) of rotary table (3A3)；The AB graphite column (3B2) is mounted on A axial direction auxiliary bearing skeleton
In the AB through-hole (3A2) of the outer rotary table (3A4) of the AB of (3A)；
The center of the outer bulge loop (3D) of B graphite is equipped with P central through hole (3D-1), and P central through hole (3D-1) is used for armature spindle (6)
It passes through；One end face of the outer bulge loop (3D) of B graphite is smooth panel, and the other end of the outer bulge loop (3D) of B graphite is equipped with by circumference point
The BA graphite column (3D1) and BB graphite column (3D2) of cloth；The BA graphite column (3D1) is mounted on B axle to auxiliary bearing skeleton
In the BA of (3C) in the BA through-hole (3C1) of rotary table (3C3)；The BB graphite column (3C2) is mounted on B axle to auxiliary bearing skeleton
In the BB through-hole (3C2) of the outer rotary table (3C4) of the BB of (3C)；
The center of radially magnetized bearing skeleton (4A) is equipped with J central through hole (4A-1)；On radially magnetized bearing skeleton (4A)
Equipped with the A through-hole (4A1) and B through-hole (4A2) announced according to even circumferential, the A through-hole (4A1) is for filling graphite internal projecting ring
A graphite column (4A1) on (4B), the B through-hole (4A2) are used to install the B graphite column (4B2) on graphite internal projecting ring (4B)；
The center of graphite internal projecting ring (4B) is equipped with K central through hole (4B-1), is placed with radial punching in K central through hole (4B-1)
Magnetic bearing skeleton (4A)；Graphite internal projecting ring (4B) is equipped with the A graphite column (4B1) and B graphite column being distributed according to even circumferential
(4B2)；The A graphite column (4B1) is mounted in the A through-hole (4A1) of radially magnetized bearing skeleton (4A)；The B graphite column
(4B2) is mounted in the B through-hole (4A2) of radially magnetized bearing skeleton (4A)；
The center of radially magnetized bearing baffle ring (4C) is equipped with L central through hole (4C-1), radially magnetized bearing baffle ring (4C)
Disk is equipped with the D through-hole (4C1) passed through for screw；The disk of radially magnetized bearing baffle ring (4C) is led with B radially magnetized flexibility
The convex rotary table (2A5) of magnet ring (2A) is fixed by screw；
Radial direction magnetic bearing coil group (5) each coil is denoted as A coil (51), B coil (52), C coil (53), D coil
(54), E coil (55), F coil (56), G coil (57) and H coil (58)；
A coil (51) is mounted on the A stator tooth (81) of stator core (8)；
B coil (52) is mounted on the B stator tooth (82) of stator core (8)；
C coil (53) is mounted on the C stator tooth (83) of stator core (8)；
D coil (54) is mounted on the D stator tooth (84) of stator core (8)；
E coil (55) is mounted on the E stator tooth (85) of stator core (8)；
F coil (56) is mounted on the F stator tooth (86) of stator core (8)；
G coil (57) is mounted on the G stator tooth (87) of stator core (8)；
H coil (58) is mounted on the H stator tooth (88) of stator core (8)；
The inner ring side of stator core (8) is equipped with stator tooth corresponding with coil number, i.e. A stator tooth according to circumference layout
(81), B stator tooth (82), C stator tooth (83), D stator tooth (84), E stator tooth (85), F stator tooth (86), G stator tooth (87)
With H stator tooth (88)；There are the stator tooth sockets passed through for coil between two stator tooths.
The present invention is based on the excellent of the orthogonal magnetic circuit journal axle one magnetic suspension bearing of symmetrical self-lubricating flexibility auxiliary bearing structure
Point is:
1. the present invention is respectively equipped with axial self-lubricating component in the thrust disc two sides of armature spindle, while in the armature spindle
Radial self-lubricating component is arranged in left end, self-lubricating component is arranged simultaneously in the both direction of armature spindle, so that orthogonal magnetic-path
Axis one magnetic suspension bearing avoids the high thermal phenomenon of dry friction generation when there is unstability, but also rotor kinetic energy
Rapid dispersion, the Combination Design of both direction self-lubricating component are also the possibility for avoiding complete machine from scrapping in rotor unstability.
2. auxiliary bearing is designed as resilient arm structure by the present invention, the proportion of the rigidity and damping that make auxiliary bearing tends to close
Reason can convert the impact kinetic energy of rotor to the strain energy of elastic arm, eliminate " stuck " phenomenon, stone when unstability occurs
The application of Mo Huan makes bearing have self-lubricating function, avoids the high thermal phenomenon of dry friction generation, and eliminate that complete machine scraps can
Energy.
3. auxiliary bearing and magnetic suspension bearing are combined together by present invention design, keep complete machine structure more compact, reduces
Rotor length, improves rotor rigidity mode.With reference to " vibration mechanics ", author Ni Zhenhua, publishing house, Xi'an Communications University,
P371 pages of formula for natural frequencyWherein ωiFor the i-th rank intrinsic frequency (i=1,2,3 ... n, as i=1
That is the 1st rank intrinsic frequency is rigid mode), E is rotor elasticity modulus, and I is main inertia away from ρ is rotor density, and A cuts for rotor
Area, l are rotor length.It can be seen that length l is shorter, and rigid mode is higher in the case that rotor material and sectional area are constant.
4. the present invention using magnetic suspension bearing part be used as auxiliary bearing, realization compact-sized and magnetic suspension bearing with it is auxiliary
It helps bearing integratedization to design and assemble, the concentricity of magnetic center and sectional center can be improved, improve the control of magnetic suspension bearing
Precision processed.
5. in order to which the orthogonal magnetic circuit journal axle one magnetic suspension bearing designed with the present invention substitutes " IEEE TRANSACTIONS
The right half of Fig. 1 structure disclosed in ON INDUSTRIAL ELECTRONICS ", the present invention is divided into be divided centered on stator core
For the auxiliary bearing part on the left side and the auxiliary bearing part on the right, and tiled configuration is different, is replaced and is passed with auxiliary bearing component
System ball bearing realizes self-lubricating when rotor unstability so that the damping of auxiliary bearing and rigidity realize proportion optimizing design
With the rapid dispersion of rotor kinetic energy.
Detailed description of the invention
Fig. 1 is the orthogonal magnetic circuit journal axle one magnetic suspension bearing the present invention is based on symmetrical self-lubricating flexibility auxiliary bearing structure
External structure.
Figure 1A is the structure chart of the unassembled permanent magnetic circuit component of Fig. 1.
Figure 1B is the sectional structure chart of Fig. 1.
Fig. 1 C is the orthogonal magnetic circuit journal axle one magnetic suspension shaft the present invention is based on symmetrical self-lubricating flexibility auxiliary bearing structure
The exploded view held.
Fig. 2 is the structure chart of A axial direction magnetic guiding loop of the present invention.
Fig. 2A is structure chart of the B axle of the present invention to magnetic guiding loop.
Fig. 3 is the structure chart of radially magnetized flexibility magnetic guiding loop of the present invention.
Fig. 3 A is the another side structure chart of radially magnetized flexibility magnetic guiding loop of the present invention.
Fig. 3 B is the front view of radially magnetized flexibility magnetic guiding loop of the present invention.
Fig. 4 is the structure chart after A axial direction auxiliary bearing skeleton of the present invention and the outer bulge loop assembly of A graphite.
Fig. 4 A is another viewing angle constructions figure after A axial direction auxiliary bearing skeleton of the present invention and the outer bulge loop assembly of A graphite.
Fig. 5 is structure chart of the B axle of the present invention to outside auxiliary bearing skeleton and B graphite after bulge loop assembly.
Fig. 5 A is another viewing angle constructions figure of the B axle of the present invention to outside auxiliary bearing skeleton and B graphite after bulge loop assembly.
Fig. 5 B is structure chart of the B axle of the present invention to auxiliary bearing skeleton.
Fig. 5 C is the structure chart after the outer bulge loop assembly of B graphite of the present invention.
Fig. 6 is the structure chart after graphite internal projecting ring of the present invention and radially magnetized bearing Skeleton assembly.
Fig. 6 A is the structure chart of radially magnetized bearing skeleton of the present invention.
Fig. 6 B is the structure chart of graphite internal projecting ring of the present invention.
Fig. 7 is the structure chart of stator core of the present invention and coil assembly.
Fig. 7 A is the structure chart of stator core of the present invention.
Fig. 8 A is the orthogonal magnetic circuit journal axle one magnetic suspension shaft the present invention is based on symmetrical self-lubricating flexibility auxiliary bearing structure
The magnetic circuit schematic diagram held.
Fig. 8 B is the orthogonal magnetic circuit journal axle one magnetic suspension shaft the present invention is based on symmetrical self-lubricating flexibility auxiliary bearing structure
The magnetic circuit schematic diagram held.
Fig. 9 is the orthogonal magnetic circuit journal axle one magnetic based on symmetrical self-lubricating flexibility auxiliary bearing structure for designing the present invention
Suspension bearing is applied to the sectional structure chart in high speed magnetic suspension motor.
Specific embodiment
Below in conjunction with drawings and examples, the present invention is described in further detail.
Referring to shown in Fig. 1, Figure 1A, Figure 1B, Fig. 1 C, the present invention devises a kind of based on symmetrical self-lubricating flexibility auxiliary bearing
The orthogonal magnetic circuit journal axle one magnetic suspension bearing of structure, which is by A axial direction magnetic guiding loop
1A, B axle are to magnetic guiding loop 1D, permanent magnet A 1B, A radially magnetized rigidity magnetic guiding loop 1C, radially magnetized flexibility magnetic guiding loop 2A, B permanent magnet
2B, B radially magnetized rigidity magnetic guiding loop 2C, A axial direction auxiliary bearing skeleton 3A, B axle bulge loop to outside auxiliary bearing skeleton 3C, A graphite
The outer bulge loop 3D of 3B, B graphite, radially magnetized bearing skeleton 4A, graphite internal projecting ring 4B, radially magnetized bearing baffle ring 4C, radial magnetic axis
Coil group 5, axial magnetic bearing coil 5A and stator core 8 is held to form.
Wherein, A axial direction magnetic guiding loop 1A is identical as the structure of from B axle to magnetic guiding loop 1D；
Wherein, permanent magnet A 1B is identical as the structure of B permanent magnet 2B；
Wherein, A radially magnetized rigidity magnetic guiding loop 1C is identical as the structure of B radially magnetized rigidity magnetic guiding loop 2C；
Wherein, A axial direction auxiliary bearing skeleton 3A is identical as the structure of from B axle to auxiliary bearing skeleton 3C；
Wherein, the outer bulge loop 3B of A graphite is identical as the structure of the outer bulge loop 3D of B graphite；
In the present invention, A axial direction magnetic guiding loop 1A, B axle are to magnetic guiding loop 1D, permanent magnet A 1B, A radially magnetized rigidity magnetic guiding loop
1C, radially magnetized flexibility magnetic guiding loop 2A, B permanent magnet 2B and B radially magnetized rigidity magnetic guiding loop 2C constitute orthogonal magnetic circuit journal axle one
The permanent magnetic circuit component of magnetic suspension bearing.By Fig. 1 it will be clear that the permanent magnetic circuit component is can making for outside
For the part of shell.
In the present invention, radially magnetized flexibility magnetic guiding loop 2A, radial auxiliary bearing skeleton 4A, graphite internal projecting ring 4B and diameter
To the left redundant bearing assembly for rushing magnetic bearing baffle ring 4C composition magnetic suspension bearing of the present invention, referring to shown in Figure 1B.Left redundant bearing
Component can realize the self-lubricating of auxiliary bearing in armature spindle unstability.But also present invention employs by radial direction magnetic bearing
The design method being combined as a whole with auxiliary bearing solves traditional magnetic bearing technical problem low with auxiliary bearing concentricity.
The orthogonal magnetic circuit journal axle one magnetic suspension bearing that the present invention designs is socketed on armature spindle 6 by rotor core 7
It realizes and to be flexibly connected with rotor.The armature spindle 6 can be the output shaft of high speed magnetic suspension motor.
A axial direction magnetic guiding loop 1A and B axle are to magnetic guiding loop 1D
Referring to shown in Fig. 1, Figure 1B, Fig. 1 C, Fig. 2, A axial direction magnetic guiding loop 1A is the integral structure of electrical pure iron machine-shaping
Part.The center of A axial direction magnetic guiding loop 1A is equipped with the A central through hole 1A-1 passed through for armature spindle 6；One end of A axial direction magnetic guiding loop 1A
Face is smooth panel, is equipped in AA interior annular 1A2, AA cavity 1A3, AA from the inside to the outside on the other end of A axial direction magnetic guiding loop 1A
Dome platform 1A5, AB cavity 1A4, AA outer toroid 1A1, the AB cavity 1A4 are for placing axial magnetic bearing coil 5A, the AA
Cavity 1A3 is used to place A axial direction auxiliary bearing skeleton 3A and the outer bulge loop 3B of A graphite after assembly.
Referring to shown in Fig. 1, Figure 1B, Fig. 1 C, Fig. 2A, B axle is the integral structure of electrical pure iron machine-shaping to magnetic guiding loop 1D
Part.B axle is equipped with the O central through hole 1D-1 passed through for armature spindle 6 to the center of magnetic guiding loop 1D；B axle is to one end of magnetic guiding loop 1D
Face is smooth panel, and B axle is equipped in BA interior annular 1D2, BA cavity 1D3, BA from the inside to the outside on the other end of magnetic guiding loop 1D
Dome platform 1D5, BB cavity 1D4, BA outer toroid 1D1, the BB cavity 1D4 are for placing axial magnetic bearing coil 5A, the BA
Cavity 1D3 is used to place the bulge loop 3D to outside auxiliary bearing skeleton 3C and B graphite of the B axle after assembly.
The AB cavity 1A4 of A axial direction magnetic guiding loop 1A and B axle are to the BB cavity 1D4 of magnetic guiding loop 1D after docking in the present invention
It will form the cavity (referring to shown in Figure 1B) for placing axial magnetic bearing coil 5A, and in docking, armature spindle 6 is pushed away
Power disk 61 is the AA convex rotary table 1A5 for being fastened on A axial direction magnetic guiding loop 1A and B axle between the BA convex rotary table 1D5 of magnetic guiding loop 1D
, in this way when forming axial magnetic magnetic circuit, armature spindle 6, A axial direction magnetic guiding loop 1A and B axle to magnetic guiding loop 1D be conducting parts.
Radially magnetized flexibility magnetic guiding loop 2A
Referring to shown in Fig. 1, Figure 1B, Fig. 1 C, Fig. 3, Fig. 3 A, Fig. 3 B, radially magnetized flexibility magnetic guiding loop 2A adds for electrical pure iron
The molding integral structural member of work.It is logical that radially magnetized flexibility magnetic guiding loop 2A is equipped with outer toroid 2A1, interior annular 2A2, multiple triangles
Hole 2A4, triangle through hole 2A4 make the flexible arm 2A3 between outer toroid 2A1 and interior annular 2A2 there are connection.Multiple triangles
It is separated between through-hole 2A4 by flexible arm 2A3.Since multiple triangle through hole 2A4 that the present invention designs are located in outer toroid
Between 2A1 and interior annular 2A2, therefore triangle through hole 2A4 is laid out around the center of circle of radially magnetized flexibility magnetic guiding loop 2A, and three
Angular through-hole is being arc close to outer toroid 2A1 on one side.In turn, flexible arm 2A3 is also around radially magnetized flexibility magnetic guiding loop 2A
The center of circle layout.
Referring to shown in Fig. 3 A, the center of radially magnetized flexibility magnetic guiding loop 2A is equipped with the D central through hole passed through for armature spindle 6
2A-1；An end face of radially magnetized flexibility magnetic guiding loop 2A is smooth panel, on the other end of radially magnetized flexibility magnetic guiding loop 2A
It is equipped with tapped blind hole 2A51, is set between interior dome platform 2A5 and interior annular 2A2 equipped with convex rotary table 2A5, convex rotary table 2A5
There is interior ring cavity 2A6.Graphite internal projecting ring 4B is installed, radially magnetized bearing baffle ring 4C is fixed by screw in the interior ring cavity 2A6
On the convex rotary table 2A5 of radially magnetized flexibility magnetic guiding loop 2A.
Referring to the flexibility shown in Fig. 3 B, having in use for the radially magnetized flexibility magnetic guiding loop 2A for designing the present invention
It resets, then single flexible arm need to meet the design requirement of arc angle β (unit rad) and axial width a (unit mm).By diameter
It is denoted as r (unit mm) to the radius of flexible magnetic guiding loop, the axial width of radial compliance magnetic guiding loop is denoted as D (unit mm), then flexible
The configuration of magnetic guiding loop, which designs, to be met K is strain coefficient, and m is to turn
The quality of son, unit K g, u are the revolving speed of rotor, and unit rpm, E are elasticity modulus, and units MPa, σ is strain, dimensionless.
In the present invention, radially magnetized flexibility magnetic guiding loop 2A is designed between outer toroid 2A1 and interior annular 2A2 multiple
Flexible flexible arm 2A3 can solve auxiliary bearing by part deformation when unstability situation occurs in armature spindle 6
" stuck " phenomenon.
Permanent magnet A 1B and B permanent magnet 2B
Referring to shown in Fig. 1, Figure 1B, Fig. 1 C, permanent magnet A 1B is the integral structure annulus of neodymium iron boron or SmCo casting and forming
Part.The center of permanent magnet A 1B is equipped with the B central through hole 1B-1 passed through for armature spindle 6.
Referring to shown in Fig. 1, Figure 1B, Fig. 1 C, B permanent magnet 2B is the integral structure annulus of neodymium iron boron or SmCo casting and forming
Part.The center of B permanent magnet 2B is equipped with the E central through hole 2B-1 passed through for armature spindle 6.
A radially magnetized rigidity magnetic guiding loop 1C and B radially magnetized rigidity magnetic guiding loop 2C
Referring to shown in Fig. 1, Figure 1B, Fig. 1 C, A radial rigidity magnetic guiding loop 1C is electrical pure iron (or other high magnetic permeability metals)
The integral structure annulus part of machine-shaping.The center of A radial rigidity magnetic guiding loop 1C is equipped with C central through hole 1C-1, A radial rigidity and leads
A inner baffle ring 1C1 is equipped on the inside of the ring body of magnet ring 1C.
Referring to shown in Fig. 1, Figure 1B, Fig. 1 C, B radial rigidity magnetic guiding loop 2C is electrical pure iron (or other high magnetic permeability metals)
The integral structure annulus part of machine-shaping.The center of B radial rigidity magnetic guiding loop 2C is equipped with F central through hole 2C-1, B radial rigidity and leads
B inner baffle ring 2C1 is equipped on the inside of the ring body of magnet ring 2C.
In the present invention, the B inner baffle ring of the A inner baffle ring 1C1 of A radial rigidity magnetic guiding loop 1C and B radial rigidity magnetic guiding loop 2C
For placing the outer disc 8A (as shown in Figure 1B) of magnetic bearing stator core 8 between 2C1.
In the present invention, A radial rigidity magnetic guiding loop 1C and B radial rigidity is installed to lead on the outer disc 8A of stator core 8
Magnet ring 2C, and there are the gaps A 9 between A radial rigidity magnetic guiding loop 1C and B radial rigidity magnetic guiding loop 2C；It is rigid using two radial directions
Property magnetic guiding loop (1C, 2C) along the shaft orientation layout of armature spindle, and have certain interval, permanent magnetic circuit can be prevented short-circuit.
A axial direction auxiliary bearing skeleton 3A and B axle are to auxiliary bearing skeleton 3C
Referring to shown in Fig. 1, Figure 1B, Fig. 1 C, Fig. 4, Fig. 4 A, A axial direction auxiliary bearing skeleton 3A is 40Cr or 40CrNiMo material
Expect the annulus part of processing.The center of A axial direction auxiliary bearing skeleton 3A is equipped with G central through hole 3A-1.A axial direction auxiliary bearing skeleton
An end face of 3A is smooth panel, and the other end of A axial direction auxiliary bearing skeleton 3A is equipped with AA rotary table 3A3 and AB rotary table 3A4；Institute
It states and is distributed with multiple AA through-hole 3A1 passed through for AA graphite column 3B1 by even circumferential on AA rotary table 3A3；The AB rotary table 3A4
On by even circumferential be distributed with multiple AB through-hole 3A2 passed through for AB graphite column 3B2.
Referring to shown in Fig. 1, Figure 1B, Fig. 1 C, Fig. 5, Fig. 5 A, Fig. 5 B, Fig. 5 C, B axle to auxiliary bearing skeleton 3C be 40Cr or
The annulus part of 40CrNiMo material processing.B axle is equipped with I central through hole 3C-1 to the center of auxiliary bearing skeleton 3C.B axle is to auxiliary
An end face of bearing skeleton 3C is smooth panel, and B axle is equipped with BA rotary table 3C3 and BB circle to the other end of auxiliary bearing skeleton 3C
Platform 3C4；Multiple BA through-hole 3C1 passed through for BA graphite column 3D1 are distributed with by even circumferential on the BA rotary table 3C3；It is described
Multiple BB through-hole 3C2 passed through for BB graphite column 3D2 are distributed with by even circumferential on BB rotary table 3C4.
In the present invention, it is arranged what two column circumferencial directions were arranged in the axial direction of axial auxiliary bearing skeleton (3A, 3C)
For the through-hole of the graphite column installation of axial direction, graphite column is placed in through-holes, in magnetic suspension bearing work of the invention,
Making armature spindle in the axial direction has a self-lubricating effect, solves the stuck phenomenon of bearing and armature spindle.
The outer bulge loop 3B of the A graphite and outer bulge loop 3D of B graphite
Referring to shown in Figure 1A, Figure 1B, Fig. 1 C, Fig. 4, Fig. 4 A, the outer bulge loop 3B of A graphite is the molding integrated annulus of machining graphite
Structural member.The center of the outer bulge loop 3B of A graphite is equipped with H central through hole 3B-1, H central through hole 3B-1 and passes through for armature spindle.A graphite
An end face of outer bulge loop 3B is smooth panel, and the other end of the outer bulge loop 3B of A graphite is equipped with the AA graphite column by circle distribution
3B1 and AB graphite column 3B2.The AA that the AA graphite column 3B1 is mounted on rotary table 3A3 in the AA of A axial direction auxiliary bearing skeleton 3A is logical
In the 3A1 of hole；The AB graphite column 3B2 is mounted in the AB through-hole 3A2 of the outer rotary table 3A4 of AB of A axial direction auxiliary bearing skeleton 3A.
In the present invention, each graphite column respectively corresponds the through-hole on axial auxiliary bearing skeleton, the outer bulge loop of graphite and bearing skeleton
The self-lubricating of auxiliary bearing is realized in cooperation.
Referring to shown in Figure 1A, Figure 1B, Fig. 1 C, Fig. 5, Fig. 5 A, Fig. 5 B, Fig. 5 C, the outer bulge loop 3D of B graphite be machining graphite at
The integrated circular ring structure part of type.The center of the outer bulge loop 3D of B graphite is equipped with P central through hole 3D-1, P central through hole 3D-1 for turning
Sub- axis passes through.An end face of the outer bulge loop 3D of B graphite is smooth panel, and the other end of the outer bulge loop 3D of B graphite is equipped with by circumference point
The BA graphite column 3D1 and BB graphite column 3D2 of cloth.The BA graphite column 3D1 is mounted on BA inner circle of the B axle to auxiliary bearing skeleton 3C
In the BA through-hole 3C1 of platform 3C3；The BB graphite column 3C2 is mounted on B axle rotary table 3C4 to outside the BB of auxiliary bearing skeleton 3C
In BB through-hole 3C2.In the present invention, each graphite column respectively corresponds the through-hole on axial auxiliary bearing skeleton, the outer bulge loop of graphite
The self-lubricating of auxiliary bearing is realized with the cooperation of bearing skeleton.
Radially magnetized bearing skeleton 4A
Referring to shown in Fig. 1, Figure 1B, Fig. 1 C, Fig. 6, Fig. 6 A, radially magnetized bearing skeleton 4A is 40Cr or 40CrNiMo material
Expect the annulus part of processing.The center of radially magnetized bearing skeleton 4A is equipped with J central through hole 4A-1.Radially magnetized bearing skeleton 4A
A through-hole 4A1 and the B through-hole 4A2, the A through-hole 4A1 that announce according to even circumferential are equipped with for filling on graphite internal projecting ring 4B
A graphite column 4A1, the B through-hole 4A2 are for installing the B graphite column 4B2 on graphite internal projecting ring 4B.In the present invention, in radial punching
The through-hole for the graphite column installation for axial direction that two column circumferencial directions are arranged is arranged in the axial direction of magnetic bearing skeleton 4A, reaches
To the self-lubricating effect of radial direction upper bearing (metal).
Graphite internal projecting ring 4B
Referring to shown in Figure 1A, Figure 1B, Fig. 1 C, Fig. 6, Fig. 6 B, graphite internal projecting ring 4B is the molding integrated annulus of machining graphite
Structural member.The center of graphite internal projecting ring 4B is equipped in K central through hole 4B-1, K central through hole 4B-1 and is placed with radially magnetized bearing
Skeleton 4A.Graphite internal projecting ring 4B is equipped with the A graphite column 4B1 and B graphite column 4B2 being distributed according to even circumferential.The A graphite column
4B 1 is mounted in the A through-hole 4A1 of radially magnetized bearing skeleton 4A.The B graphite column 4B2 is mounted on radially magnetized bearing skeleton
In the B through-hole 4A2 of 4A.In the present invention, auxiliary is realized in the through-hole cooperation on each graphite column and radially magnetized bearing skeleton 4A
The self-lubricating of bearing.
Radially magnetized bearing baffle ring 4C
Referring to shown in Figure 1A, Figure 1B, Fig. 1 C, radially magnetized bearing baffle ring 4C is the integrated annulus of electrical pure iron machine-shaping
Structural member.The center of radially magnetized bearing baffle ring 4C is equipped with L central through hole 4C-1, sets on the disk of radially magnetized bearing baffle ring 4C
There is the D through-hole 4C1 passed through for screw.The disk of radially magnetized bearing baffle ring 4C and the convex of B radially magnetized flexibility magnetic guiding loop 2A
Rotary table 2A5 is fixed by screw.
Radial direction magnetic bearing coil group 5
Referring to shown in Figure 1A, Figure 1B, Fig. 1 C, Fig. 5, Fig. 7 A, radial direction magnetic bearing coil group 5 is the pairs of coil of fine copper coiling
It constitutes, generally four pairs of coils (totally 8 coils, two neighboring is one group) form a magnetic bearing coil group 5.Each coil
It (is adjusted according to rotor speed and output power of motor) for 90~120 circles, line footpath 0.5mm, orthogonal magnetic circuit axial magnetic
The power of bearing is 60W~80W (being adjusted according to rotor speed and output power of motor).Each coil is mounted on stator iron
On the stator tooth of core 8.
In the present invention, the layout shown in Figure 5 in order to clearly demonstrate 8 coils forms radial direction magnetic bearing coil
Each coil of group 5 is denoted as A coil 51, B coil 52, C coil 53, D coil 54, E coil 55, F coil 56, G coil 57 and H
Coil 58.
A coil 51 is mounted on the A stator tooth 81 of stator core 8；
B coil 52 is mounted on the B stator tooth 82 of stator core 8；
C coil 53 is mounted on the C stator tooth 83 of stator core 8；
D coil 54 is mounted on the D stator tooth 84 of stator core 8；
E coil 55 is mounted on the E stator tooth 85 of stator core 8；
F coil 56 is mounted on the F stator tooth 86 of stator core 8；
G coil 57 is mounted on the G stator tooth 87 of stator core 8；
H coil 58 is mounted on the H stator tooth 88 of stator core 8.
Axial magnetic bearing coil 5A
Referring to shown in Figure 1A, Figure 1B, Fig. 1 C, axial magnetic bearing coil 5A is fine copper coiling.General coil is 90~300
Circle (is adjusted) according to rotor speed and output power of motor, line footpath 0.5mm.In the present invention, axial magnetic bearing coil 5A
The electromagnetic field that can be generated is adjusted according to rotor speed and output power of motor.
Stator core 8
Referring to shown in Figure 1A, Figure 1B, Fig. 1 C, Fig. 7, Fig. 7 A, stator core 8 is that (thickness can be multilayer silicon steel sheet
0.2mm, 0.35mm and 0.5mm) the molding integrated circular ring structure part of superposition.The center of magnetic bearing stator core 8 is logical equipped with the center N
Hole 8-1, N central through hole 8-1 for placing rotor core 7, rotor core 7 be multilayer silicon steel sheet (thickness can be 0.2mm,
0.35mm and 0.5mm) the molding integrated circular ring structure part of superposition.The center of rotor core 7 is equipped with M central through hole 7-1, passes through M
Rotor core 7 is mounted on armature spindle 6 by central through hole 7-1.Stator core 8 is equipped with the stator for installing each coil
Tooth, and stator tooth is circumference uniform distribution, there are the stator tooth sockets passed through for coil between every two stator tooth.
In the present invention, stator core 8 is separately mounted in order to clearly demonstrate 8 coils referring to shown in Fig. 7, Fig. 7 A
On respective stator tooth, then the inner ring side of stator core 8 is equipped with 8 stator tooths corresponding with coil number according to circumference layout, i.e.,
A stator tooth 81, B stator tooth 82, C stator tooth 83, D stator tooth 84, E stator tooth 85, F stator tooth 86, G stator tooth 87 and H stator
Tooth 88.There are the stator tooth sockets passed through for coil between two stator tooths.
In the present invention, A radial rigidity magnetic guiding loop 1C and B radial rigidity is installed to lead on the outer disc 8A of stator core 8
Magnet ring 2C, and there are the gaps A 9 between A radial rigidity magnetic guiding loop 1C and B radial rigidity magnetic guiding loop 2C；It is rigid using two radial directions
Property magnetic guiding loop (1C, 2C) along the shaft orientation layout of armature spindle, and have certain interval, permanent magnetic circuit can be prevented short-circuit.Stator iron
The inner ring side of core 8 is equipped with 8 stator tooths corresponding with coil number according to circumference layout, and rotor iron is installed on the inside of stator tooth
Core 7.
The present invention uses is divided into left redundant bearing portions and right journal axle shaft centered on stator core 8 in the axial direction
Bearing portion point；In left redundant bearing portions and the design method that radial direction magnetic bearing and auxiliary bearing are combined as a whole is used, solution
It has determined traditional magnetic bearing technical problem low with auxiliary bearing concentricity.
The assembly for the orthogonal magnetic circuit journal axle one magnetic suspension bearing that the present invention designs:
(A) 8 coils are socketed in respectively on 8 stator tooths of stator core 8；
(B) all graphite columns outside A graphite on bulge loop 3B are each passed through respective logical on A axial direction auxiliary bearing skeleton 3A
Hole, and after making the outer bulge loop 3B and A axial direction auxiliary bearing skeleton 3A cooperation of A graphite, it is placed in the AA cavity of A axial direction magnetic guiding loop 1A
In 1A3；
(C) that all graphite columns outside B graphite on bulge loop 3D are each passed through B axle is respective logical on auxiliary bearing skeleton 3C
Hole, and after the outer bulge loop 3D of B graphite and B axle are cooperated to auxiliary bearing skeleton 3C, it is placed in BA cavity of the B axle to magnetic guiding loop 1D
In 1D3；
(D) all graphite columns on graphite internal projecting ring 4B are each passed through respective logical on radial auxiliary bearing skeleton 4A
Hole, and make graphite internal projecting ring 4B and radial direction auxiliary bearing skeleton 4A cooperation after, be placed in the BA inner ring of radial compliance magnetic guiding loop 2A
In chamber 2A6, then transverse bearing baffle ring 4C is fixed on the BA convex rotary table 2A5 of radial compliance magnetic guiding loop 2A with screw, is led to
It crosses and realizes the movement of transverse bearing baffle ring 4C limitation graphite internal projecting ring 4B and radial auxiliary bearing skeleton 4A in the axial direction；Diameter
To there are portable protective gaps, which is the half of magnetic gap between auxiliary bearing skeleton 4A and armature spindle 6, usually 0.2mm~
0.3mm；
(E) the end face both ends of the outer disc 8C of magnetic bearing stator core 8 install respectively A radial rigidity magnetic guiding loop 1C and
B radial rigidity magnetic guiding loop 2C, and there are the gaps A 9 between A radial rigidity magnetic guiding loop 1C and B radial rigidity magnetic guiding loop 2C；
(F) in the right end of A radial rigidity magnetic guiding loop 1C and B axle to being equipped with A permanent magnet 1B between the left end magnetic guiding loop 1D；
B permanent magnet 2B is installed between the left end and the left end radial compliance magnetic guiding loop 2A of B radial rigidity magnetic guiding loop 2C；
(G) axial coil 5A is placed in B axle into the BB cavity 1D4 of magnetic guiding loop 1D；
(H) rotor core 7 is socketed on armature spindle 6；
(I) armature spindle 6 for being socketed rotor core 7 is each passed through the components radial direction auxiliary bearing that above-mentioned assembly is completed
The I of the J central through hole 4A-1 of skeleton 4A, the N central through hole 8-1 of magnetic bearing stator core 8 and B axle to auxiliary bearing skeleton 3C
Central through hole 3C-1 makes the thrust disc 61 on armature spindle 6 be in contact with B axle to the BA dome platform 1D5 of magnetic guiding loop 1D；
(J) AA of the A axial direction magnetic guiding loop 1A of bulge loop 3B outside A axial direction auxiliary bearing skeleton 3A and A graphite will be assembled with
Outer toroid 1A1 and B axle are to the joint BA outer toroid 1D1 of magnetic guiding loop 1D；
(K) when radial direction magnetic bearing coil group 5 is powered, be socketed rotor core 7 armature spindle 6 can be suspended in it is radial auxiliary
Help the J central through hole 4A-1 of bearing skeleton 4A, the N central through hole 8-1 of magnetic bearing stator core 8, B axle to auxiliary bearing skeleton 3C
The G central through hole 4A-1 of I central through hole 3C-1, A axial direction auxiliary bearing skeleton 3A be formed by space.
(L) when axial coil 5A is powered, the thrust disc 61 for being socketed the armature spindle 6 of rotor core 7 can be suspended in B axle
In the space surrounded to the AA convex rotary table 1A5 of the BA convex rotary table 1D5 and A axial direction magnetic guiding loop 1A of magnetic guiding loop 1D.
Referring to the orthogonal magnetic based on symmetrical self-lubricating flexibility auxiliary bearing structure that shown in Fig. 8 A, Fig. 8 B, the present invention is designed
The magnetic circuit of approach axes one magnetic suspension bearing are as follows:
The permanent magnetic that permanent magnet generates can provide permanent magnet bias magnetic field to magnetic suspension bearing, undertake big suffered by magnetic bearing
Partially radially power and axial force.The electromagnetic force that magnet exciting coil generates can be provided by being superimposed with permanent magnetic to magnetic suspension bearing
It is accurately controlled power.Since most of radial and axial load is undertaken by permanent magnetic, so electromagnetic force only needs to export fraction
Power bears radial and axial load, is advantageously implemented the accurate control of electromagnetic force in this way, is more advantageous to and magnetic bearing is kept to turn surely
Sub- air gap is uniform, realizes the contactless suspension bearing of rotor.
Fig. 8 A show three magnetic circuits, respectively left side permanent magnetic circuit, right side permanent magnetic circuit and axial magnetic magnetic circuit.
The trend of left side permanent magnetic circuit: magnetic flux passes through radial compliance magnetic guiding loop from the pole N of B permanent magnet 2B respectively
2A, radial auxiliary bearing skeleton 4A, armature spindle 6, rotor core 7, magnetic bearing stator core 8, B radial rigidity magnetic guiding loop 2C are returned to
The pole S of B permanent magnet 2B.
The trend of right side permanent magnetic circuit: magnetic flux from the pole N of permanent magnet A 1B, by B axle to magnetic guiding loop 1D when
Time is divided into two branches, and a branch passes through downwards B axle and reaches thrust disc 61 to magnetic guiding loop 1D, and another branch passes through to the right A
Axial magnetic guiding loop 1A reaches thrust disc 61, and one magnetic circuit of stroke again after two branches converge at thrust disc 61, the magnetic circuit is again
The pole S of permanent magnet A 1B is returned to by armature spindle 6, rotor core 7, stator core 8, A radial rigidity magnetic guiding loop 1C respectively.
The trend of axial magnetic magnetic circuit: "●" shown in axial magnetic coil 5A indicates that current direction is vertical and flows out in Fig. 8 B
Paper, "×" indicate that current direction is vertical and flows into paper, and current direction and flow direction meet right-hand screw rule.Axial magnetic
Coil 5A is moved towards to be powered by illustrating current, then magnetic flux passes through A axial direction magnetic guiding loop 1A, thrust from B axle to magnetic guiding loop 1D respectively
Disk 61 returns to B axle to magnetic guiding loop 1D, forms a closed magnetic loop.
Fig. 8 B show radial electromagnetic circuit, stator tooth 81, stator tooth 82, the stator tooth 83, stator tooth of stator core 8
84, stator tooth 85, stator tooth 86, stator tooth 87, stator tooth 88.Radial direction magnetic bearing coil group 5 includes 8 coils, is respectively as follows:
Coil 51, coil 52, coil 53, coil 54, coil 55, coil 56, coil 57, coil 58.Each stator tooth is cased with accordingly
Coil, dot shown in each coil in figure ● indicate that the vertical cocurrent of current direction goes out paper, small fork × expression current direction
Vertically and paper is flowed into, current direction and flow direction meet right-hand screw rule, then have:
The trend of upper right corner electromagnetic circuit are as follows: coil 51 and coil 52 move towardss energization by illustrating current, then magnetic flux is from stator
Tooth 8A1 sets out, and returns to stator by the top-right part of the top-right part of outer disc C, stator tooth 8A2, rotor core 7 respectively
Tooth 8A1 forms the electromagnetic circuit in the upper right corner；
The trend of lower right corner electromagnetic circuit are as follows: coil 53 and coil 54 move towardss energization by illustrating current, then magnetic flux is from stator
Tooth 8A3 sets out, and returns to stator by the lower right corner part of the lower right corner part of outer disc C, stator tooth 8A4, rotor core 7 respectively
Tooth 8A3 forms the electromagnetic circuit in the lower right corner；
The trend of lower left corner electromagnetic circuit are as follows: coil 55 and coil 56 move towardss energization by illustrating current, then magnetic flux is from stator
Tooth 8A5 sets out, and returns to stator by the lower left corner part of the lower left corner part of outer disc C, stator tooth 8A6, rotor core 7 respectively
Tooth 8A5 forms the electromagnetic circuit in the lower left corner；
The trend of upper left corner electromagnetic circuit are as follows: coil 57 and coil 58 move towardss energization by illustrating current, then magnetic flux is from stator
Tooth 8A7 sets out, and returns to stator by the upper left hand corner section of the upper left hand corner section of outer disc C, stator tooth 8A8, rotor core 7 respectively
Tooth 8A7 forms the electromagnetic circuit in the upper left corner.
By Fig. 8 A and Fig. 8 B as it can be seen that plane where permanent magnetic circuit and axial magnetic magnetic circuit is parallel with rotor axis, radial electricity
Plane where magnetic magnetic circuit is vertical with rotor axis, and such magnetic circuit spatially forms orthohormbic structure, does not interfere with each other, and individually makees
With.
The present invention is on the basis of existing inner rotor radial pure electromagnetism magnetic bearing, by two permanent magnetic circuits and diameter axial magnetic
Magnetic circuit combines, and bigger permanent magnet bias magnetic flux is provided for rotor.The permanent magnet bias magnetic flux and axial magnetic magnetic flux and radial electromagnetism
Magnetic flux is orthogonal space arrangement, and using auxiliary bearing as a part of permanent magnetic circuit, accounts for magnetic bearing overall structure not
It is achieved that the promotion of suspension effect with more volumes, and then improves the operational effect of magnetic suspension high speed motor.
Embodiment 1
Orthogonal magnetic-path shown in Figure 9, that the present invention is designed based on symmetrical self-lubricating flexibility auxiliary bearing structure
Axis one magnetic suspension bearing, which is applied in high speed magnetic suspension motor, carries out performance specification.
The orthogonal magnetic circuit journal axle one magnetic suspension based on symmetrical self-lubricating flexibility auxiliary bearing structure that the present invention is designed
Bearing is applied in high speed magnetic suspension motor, i.e., armature spindle 6 is replaced with motor output shaft, will be assembled by rotor core 7
The good orthogonal magnetic circuit journal axle one magnetic suspension bearing of the present invention is mounted on motor output shaft, and in the thrust disc of armature spindle 6 61
One displacement sensor 20 is installed between the left side and stator core 8, high speed is installed in the left end of radially magnetized flexibility magnetic guiding loop 2A
The stator 30 of magnetic suspension motor.By comparison to conventional high rate magnetic suspension motor bearing (i.e. Fig. 1 of background technique reference),
The orthogonal magnetic circuit journal axle one magnetic suspension bearing of the present invention improves the control precision of magnetic bearing, improves the anti-mistake of magnetic suspension motor
The auxiliary bearing (Backup bearing) that tradition is applied in magnetic suspension motor is substituted with magnetic bearing of the invention in steady ability
With journal axle one magnetic bearing (3-DOF MB) structure, the overall structure of magnetic suspension high speed motor can be made more compact, mentioned simultaneously
The high concentricity of magnetic suspension bearing and auxiliary bearing, and then improve the control of the detection accuracy and control system of displacement sensor
Precision processed.
The present invention is a kind of orthogonal magnetic circuit journal axle one magnetic suspension shaft based on symmetrical self-lubricating flexibility auxiliary bearing structure
It holds, is to use journal axle one magnetic bearing and auxiliary bearing being integrated as integrated technological means, utilizes radial direction and axial magnetic
Road orthogonal space distribution mode solves traditional magnetic bearing technical problem low with auxiliary bearing concentricity, has reached same
Can be exported under magnetic bearing volume bigger suspending power, the rational proportion of auxiliary bearing rigidity and damping, mechanical coaxial degree it is high and
Control technical effect with high accuracy.In being applied to high speed magnetic suspension motor, the anti-unstability energy of high speed magnetic suspension motor is improved
The rigid mode of power and rotor, and control system is improved to the control precision of magnetic suspension bearing.
Claims (7)
1. a kind of orthogonal magnetic circuit journal axle one magnetic suspension bearing based on symmetrical self-lubricating flexibility auxiliary bearing structure, feature exist
In: the orthogonal magnetic circuit journal axle one magnetic suspension bearing be from A axial direction magnetic guiding loop (1A), B axle to magnetic guiding loop (1D), permanent magnet A
(1B), A radially magnetized rigidity magnetic guiding loop (1C), radially magnetized flexibility magnetic guiding loop (2A), B permanent magnet (2B), B radially magnetized rigidity
Magnetic guiding loop (2C), A axial direction auxiliary bearing skeleton (3A), B axle bulge loop (3B), B graphite to outside auxiliary bearing skeleton (3C), A graphite
Outer bulge loop (3D), radially magnetized bearing skeleton (4A), graphite internal projecting ring (4B), radially magnetized bearing baffle ring (4C), radial magnetic axis
Hold coil group (5), axial magnetic bearing coil (5A) and stator core (8) composition；
The fine copper coiling that coil and axial magnetic bearing coil (5A) in radial direction magnetic bearing coil group (5) are line footpath 0.5mm；
The center of A axial direction magnetic guiding loop (1A) is equipped with the A central through hole (1A-1) passed through for armature spindle (6)；A axial direction magnetic guiding loop
One end face of (1A) is smooth panel, be equipped on the other end of A axial direction magnetic guiding loop (1A) from the inside to the outside AA interior annular (1A2),
AA cavity (1A3), AA convex rotary table (1A5), AB cavity (1A4), AA outer toroid (1A1), the AB cavity (1A4) is for placing
Axial magnetic bearing coil (5A), the AA cavity (1A3) are used to place the A axial direction auxiliary bearing skeleton (3A) and A stone after assembly
The outer bulge loop (3B) of ink；
B axle is equipped with the O central through hole (1D-1) passed through for armature spindle (6) to the center of magnetic guiding loop (1D)；B axle is to magnetic guiding loop
One end face of (1D) be smooth panel, B axle on the other end of magnetic guiding loop (1D) from the inside to the outside be equipped with BA interior annular (1D2),
BA cavity (1D3), BA convex rotary table (1D5), BB cavity (1D4), BA outer toroid (1D1), the BB cavity (1D4) is for placing
Axial magnetic bearing coil (5A), the BA cavity (1D3) are used to place the B axle after assembly to auxiliary bearing skeleton (3C) and B stone
The outer bulge loop (3D) of ink；
The thrust disc (61) of armature spindle (6) is the AA convex rotary table (1A5) for being fastened on A axial direction magnetic guiding loop (1A) and B axle to magnetic conduction
Between the BA convex rotary table (1D5) of ring (1D)；
Radially magnetized flexibility magnetic guiding loop (2A) is equipped with outer toroid (2A1), interior annular (2A2), multiple triangle through hole (2A4),
Triangle through hole (2A4) makes between outer toroid (2A1) and interior annular (2A2) that there are the flexible arm of connection (2A3)；Multiple triangles
It is separated between shape through-hole (2A4) by flexible arm (2A3)；
The center of radially magnetized flexibility magnetic guiding loop (2A) is equipped with the D central through hole (2A-1) passed through for armature spindle (6)；Radial punching
One end face of magnetic flexibility magnetic guiding loop (2A) is smooth panel, and the other end of radially magnetized flexibility magnetic guiding loop (2A) is equipped with convex
Rotary table (2A5), convex rotary table (2A5) is equipped with tapped blind hole (2A51), between interior dome platform (2A5) and interior annular (2A2)
Equipped with interior ring cavity (2A6)；It is equipped with graphite internal projecting ring (4B) in the interior ring cavity (2A6), radially magnetized bearing baffle ring (4C) is logical
Screw is crossed to be fixed on the convex rotary table (2A5) of radially magnetized flexibility magnetic guiding loop (2A)；
The center of permanent magnet A (1B) is equipped with the B central through hole (1B-1) passed through for armature spindle (6)；
The center of B permanent magnet (2B) is equipped with the E central through hole (2B-1) passed through for armature spindle (6)；
The center of A radial rigidity magnetic guiding loop (1C) is equipped with C central through hole (1C-1), in the ring body of A radial rigidity magnetic guiding loop (1C)
Side is equipped with A inner baffle ring (1C1)；
The center of B radial rigidity magnetic guiding loop (2C) is equipped with F central through hole (2C-1), in the ring body of B radial rigidity magnetic guiding loop (2C)
Side is equipped with B inner baffle ring (2C1)；
Between the A inner baffle ring (1C1) of A radial rigidity magnetic guiding loop (1C) and the B inner baffle ring (2C1) of B radial rigidity magnetic guiding loop (2C)
For placing the outer disc (8A) of stator core (8)；And A radial rigidity magnetic guiding loop (1C) and B radial rigidity magnetic guiding loop (2C) it
Between there are the gap A (9)；
The center of A axial direction auxiliary bearing skeleton (3A) is equipped with G central through hole (3A-1)；The one of A axial direction auxiliary bearing skeleton (3A)
End face is smooth panel, and the other end of A axial direction auxiliary bearing skeleton (3A) is equipped with AA rotary table (3A3) and AB rotary table (3A4)；Institute
It states and is distributed with multiple AA through-holes (3A1) passed through for AA graphite column (3B1) by even circumferential on AA rotary table (3A3)；The AB
Multiple AB through-holes (3A2) passed through for AB graphite column (3B2) are distributed with by even circumferential on rotary table (3A4)；
B axle is equipped with I central through hole (3C-1) to the center of auxiliary bearing skeleton (3C)；B axle to auxiliary bearing skeleton (3C) one
End face is smooth panel, and B axle is equipped with BA rotary table (3C3) and BB rotary table (3C4) to the other end of auxiliary bearing skeleton (3C)；Institute
It states and is distributed with multiple BA through-holes (3C1) passed through for BA graphite column (3D1) by even circumferential on BA rotary table (3C3)；The BB
Multiple BB through-holes (3C2) passed through for BB graphite column (3D2) are distributed with by even circumferential on rotary table (3C4)；
The center of the outer bulge loop (3B) of A graphite is equipped with H central through hole (3B-1), and H central through hole (3B-1) is worn for armature spindle (6)
It crosses；One end face of the outer bulge loop (3B) of A graphite is smooth panel, and the other end of the outer bulge loop (3B) of A graphite, which is equipped with, presses circle distribution
AA graphite column (3B1) and AB graphite column (3B2)；The AA graphite column (3B1) is mounted on A axial direction auxiliary bearing skeleton (3A)
In AA in the AA through-hole (3A1) of rotary table (3A3)；The AB graphite column (3B2) is mounted on the AB of A axial direction auxiliary bearing skeleton (3A)
In the AB through-hole (3A2) of outer rotary table (3A4)；
The center of the outer bulge loop (3D) of B graphite is equipped with P central through hole (3D-1), and P central through hole (3D-1) is worn for armature spindle (6)
It crosses；One end face of the outer bulge loop (3D) of B graphite is smooth panel, and the other end of the outer bulge loop (3D) of B graphite, which is equipped with, presses circle distribution
BA graphite column (3D1) and BB graphite column (3D2)；The BA graphite column (3D1) is mounted on B axle to auxiliary bearing skeleton (3C)
In BA in the BA through-hole (3C1) of rotary table (3C3)；The BB graphite column (3D2) is mounted on BB of the B axle to auxiliary bearing skeleton (3C)
In the BB through-hole (3C2) of outer rotary table (3C4)；
The center of radially magnetized bearing skeleton (4A) is equipped with J central through hole (4A-1)；Radially magnetized bearing skeleton (4A) is equipped with
According to A through-hole (4A1) and B through-hole (4A2) that even circumferential is distributed, the A through-hole (4A1) is for filling graphite internal projecting ring (4B)
A graphite column (4B1), the B through-hole (4A2) is used to install B graphite column (4B2) on graphite internal projecting ring (4B)；
The center of graphite internal projecting ring (4B) is equipped with K central through hole (4B-1), is placed with radially magnetized axis in K central through hole (4B-1)
Hold skeleton (4A)；Graphite internal projecting ring (4B) is equipped with the A graphite column (4B1) and B graphite column (4B2) being distributed according to even circumferential；
The A graphite column (4B1) is mounted in the A through-hole (4A1) of radially magnetized bearing skeleton (4A)；B graphite column (4B2) installation
In the B through-hole (4A2) of radially magnetized bearing skeleton (4A)；
The center of radially magnetized bearing baffle ring (4C) is equipped with L central through hole (4C-1), the disk of radially magnetized bearing baffle ring (4C)
It is equipped with the D through-hole (4C1) passed through for screw；The disk and B radially magnetized flexibility magnetic guiding loop of radially magnetized bearing baffle ring (4C)
The convex rotary table (2A5) of (2A) is fixed by screw；
Radial direction magnetic bearing coil group (5) each coil is denoted as A coil (51), B coil (52), C coil (53), D coil (54), E
Coil (55), F coil (56), G coil (57) and H coil (58)；
A coil (51) is mounted on the A stator tooth (81) of stator core (8)；
B coil (52) is mounted on the B stator tooth (82) of stator core (8)；
C coil (53) is mounted on the C stator tooth (83) of stator core (8)；
D coil (54) is mounted on the D stator tooth (84) of stator core (8)；
E coil (55) is mounted on the E stator tooth (85) of stator core (8)；
F coil (56) is mounted on the F stator tooth (86) of stator core (8)；
G coil (57) is mounted on the G stator tooth (87) of stator core (8)；
H coil (58) is mounted on the H stator tooth (88) of stator core (8)；
The inner ring side of stator core (8) is equipped with stator tooth corresponding with coil number, i.e. A stator tooth (81), B according to circumference layout
Stator tooth (82), C stator tooth (83), D stator tooth (84), E stator tooth (85), F stator tooth (86), G stator tooth (87) and H stator
Tooth (88)；There are the stator tooth sockets passed through for coil between two stator tooths.
2. the orthogonal magnetic circuit journal axle one magnetcisuspension according to claim 1 based on symmetrical self-lubricating flexibility auxiliary bearing structure
Floating axle is held, it is characterised in that: radial compliance magnetic guiding loop can complete flexible reset, then the configuration design of radial compliance magnetic guiding loop is full
Footβ is the arc angle of single flexible arm, and a is the axial width of radial compliance magnetic guiding loop, and D is radial
The axial width of flexible magnetic guiding loop, K are strain coefficient, and m is the quality of rotor, and r is the radius of radial compliance magnetic guiding loop, and u is
The revolving speed of rotor, E are elasticity modulus, and σ is strain.
3. the orthogonal magnetic circuit journal axle one magnetcisuspension according to claim 1 based on symmetrical self-lubricating flexibility auxiliary bearing structure
Floating axle is held, it is characterised in that: the magnetic circuit of magnetic suspension bearing is axial orthogonal with radial direction.
4. the orthogonal magnetic circuit journal axle one magnetcisuspension according to claim 1 based on symmetrical self-lubricating flexibility auxiliary bearing structure
Floating axle is held, it is characterised in that: magnetic circuit trend are as follows:
The trend of left side permanent magnetic circuit: magnetic flux passes through radial compliance magnetic guiding loop from the pole N of B permanent magnet (2B) respectively
(2A), radial auxiliary bearing skeleton (4A), armature spindle (6), rotor core (7), magnetic bearing stator core (8), B radial rigidity are led
Magnet ring (2C) returns to the pole S of B permanent magnet (2B)；
The trend of right side permanent magnetic circuit: magnetic flux from the pole N of permanent magnet A (1B), by B axle to magnetic guiding loop (1D) when
Time is divided into two branches, and a branch passes through downwards B axle and reaches thrust disc (61) to magnetic guiding loop (1D), and another branch passes through to the right
It crosses A axial direction magnetic guiding loop (1A) and reaches thrust disc (61), one magnetic circuit of stroke again after two branches converge at thrust disc (61),
The magnetic circuit returns to A forever by armature spindle (6), rotor core (7), stator core (8), A radial rigidity magnetic guiding loop (1C) respectively again
The pole S of magnet (1B)；
The trend of axial magnetic magnetic circuit: current direction and flow direction meet right-hand screw rule；Axial magnetic coil (5A) is by electricity
It flows away to energization, then from B axle, to magnetic guiding loop, (the 1D) returns to by A axial direction magnetic guiding loop (1A), thrust disc (61) magnetic flux respectively
B axle forms a closed magnetic loop to magnetic guiding loop (1D)；
The trend of upper right corner electromagnetic circuit are as follows: coil (51) and coil (52) are powered by current trend, then magnetic flux is from stator tooth
(8A1) sets out, and passes through the top-right part of the top-right part of outer disc (8A), stator tooth (8A2), rotor core (7) respectively
Stator tooth (8A1) is returned to, the electromagnetic circuit in the upper right corner is formed；
The trend of lower right corner electromagnetic circuit are as follows: coil (53) and coil (54) are powered by current trend, then magnetic flux is from stator tooth
(8A3) sets out, and passes through the lower right corner part of outer disc (8A), the lower right corner part of stator tooth (8A4), rotor core (7) respectively
Stator tooth (8A3) is returned to, the electromagnetic circuit in the lower right corner is formed；
The trend of lower left corner electromagnetic circuit are as follows: coil (55) and coil (56) are powered by current trend, then magnetic flux is from stator tooth
(8A5) sets out, and passes through the lower left corner part of outer disc (8A), the lower left corner part of stator tooth (8A6), rotor core (7) respectively
Stator tooth (8A5) is returned to, the electromagnetic circuit in the lower left corner is formed；
The trend of upper left corner electromagnetic circuit are as follows: coil (57) and coil (58) are powered by current trend, then magnetic flux is from stator tooth
(8A7) sets out, and passes through the upper left hand corner section of the upper left hand corner section of outer disc (8A), stator tooth (8A8), rotor core (7) respectively
Stator tooth (8A7) is returned to, the electromagnetic circuit in the upper left corner is formed.
5. the orthogonal magnetic circuit journal axle one magnetcisuspension according to claim 1 based on symmetrical self-lubricating flexibility auxiliary bearing structure
Floating axle is held, it is characterised in that: radial direction magnetic bearing coil group (5) is that the pairs of coil of fine copper coiling is constituted, each coil is 90
~120 circles, line footpath 0.5mm.
6. the orthogonal magnetic circuit journal axle one magnetcisuspension according to claim 5 based on symmetrical self-lubricating flexibility auxiliary bearing structure
Floating axle is held, it is characterised in that: radial direction magnetic bearing coil group (5) can be that the power that orthogonal magnetic-path be provided to magnetic suspension bearing is
60W~80W.
7. the orthogonal magnetic circuit journal axle one magnetcisuspension according to claim 1 based on symmetrical self-lubricating flexibility auxiliary bearing structure
Floating axle is held, it is characterised in that: armature spindle (6) is the output shaft of high speed magnetic suspension motor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810109300.1A CN108361279B (en) | 2018-02-05 | 2018-02-05 | Orthogonal magnetic circuit journal axle one magnetic suspension bearing based on symmetrical self-lubricating flexibility auxiliary bearing structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810109300.1A CN108361279B (en) | 2018-02-05 | 2018-02-05 | Orthogonal magnetic circuit journal axle one magnetic suspension bearing based on symmetrical self-lubricating flexibility auxiliary bearing structure |
Publications (2)
| Publication Number | Publication Date |
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| CN108361279A CN108361279A (en) | 2018-08-03 |
| CN108361279B true CN108361279B (en) | 2019-05-03 |
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| CN201810109300.1A Active CN108361279B (en) | 2018-02-05 | 2018-02-05 | Orthogonal magnetic circuit journal axle one magnetic suspension bearing based on symmetrical self-lubricating flexibility auxiliary bearing structure |
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| CN113864336B (en) * | 2021-09-28 | 2022-07-22 | 珠海格力电器股份有限公司 | Radial magnetic suspension bearing and motor |
| CN115203863B (en) * | 2022-09-15 | 2023-02-17 | 浙电(宁波北仑)智慧能源有限公司 | Method and device for designing rotor-auxiliary bearing system in magnetic suspension equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008289283A (en) * | 2007-05-17 | 2008-11-27 | Shinano Kenshi Co Ltd | Motor with magnetic bearing portion |
| CN101769335B (en) * | 2010-01-26 | 2012-02-08 | 山东科技大学 | Low power-consumption hybrid magnetic bearing with permanent-magnetic upper attracting and lower repelling structure |
| CN102042327B (en) * | 2010-12-29 | 2013-04-17 | 北京奇峰聚能科技有限公司 | Low-power consumption large-bearing capacity permanent-magnet bias mixed radial magnetic bearing |
| CN102322481B (en) * | 2011-08-31 | 2013-03-20 | 北京航空航天大学 | Radial decoupling taper magnetic bearing with three degree of freedom |
| JP2013137067A (en) * | 2011-12-28 | 2013-07-11 | Daikin Industries Ltd | Magnetic bearing |
| JP5700033B2 (en) * | 2012-09-12 | 2015-04-15 | ダイキン工業株式会社 | Magnetic bearing |
| CN103196436B (en) * | 2013-03-15 | 2015-07-15 | 北京航空航天大学 | Five-freedom active magnetic bearing type dual-axis angular rate gyroscope |
| 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 |
| CN106606377B (en) * | 2015-10-21 | 2021-08-06 | 新加坡国立大学 | Self-supporting type active radial driving device for medical science |
| CN106594072B (en) * | 2016-11-29 | 2017-11-14 | 北京航空航天大学 | One kind is without thrust disc footpath axial direction integrated permanent-magnet biased magnetic bearing |
| CN107448475B (en) * | 2017-07-31 | 2019-06-11 | 北京航空航天大学 | A kind of Three Degree Of Freedom magnetic bearing and current vortex sensor integral structure |
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