CN102072249B - Large-bearing-capacity radial magnetic bearing - Google Patents
Large-bearing-capacity radial magnetic bearing Download PDFInfo
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- CN102072249B CN102072249B CN 201110006754 CN201110006754A CN102072249B CN 102072249 B CN102072249 B CN 102072249B CN 201110006754 CN201110006754 CN 201110006754 CN 201110006754 A CN201110006754 A CN 201110006754A CN 102072249 B CN102072249 B CN 102072249B
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Abstract
The invention relates to a large-bearing-capacity radial magnetic bearing. The large-bearing-capacity radial magnetic bearing consists of a permanent magnet, a control side stator magnetically-conducting ring, a control side stator iron core, excitation coils, a control side rotor iron core, a bearing side stator magnetically-conducting ring, a big end of a bearing side stator iron core, a small end of the bearing side stator iron core, a bearing side rotor iron core and a rotor magnetically-conducting ring, wherein the stator iron cores are divided into a left end and a right end, namely the control side and the bearing side respectively; the control side stator iron core comprises four stator magnetic poles in X positive and negative directions and Y positive and negative directions; the four stator magnetic poles are connected with one another through a yoke part; each stator magnetic pole is wound with the excitation coil; the bearing side stator iron core comprises a large-area magnetic pole and a small-area magnetic pole in the gravity direction; and the permanent magnet is positioned between the control side stator magnetically-conducting ring and the bearing side stator magnetically-conducting ring and is used for providing a bias magnetic field to the control side and providing a permanent magnetic field capable of generating a single-side magnetic tensile force to the bearing side. The large-bearing-capacity radial magnetic bearing overcomes the defects of large volume and large suspended current when the conventional radial magnetic bearing supports large rotor gravity, and has the advantages of reliable performance and contribution to control.
Description
Technical field
The present invention relates to a kind of non-contact magnetically suspension bearing, particularly a kind of large bearing capacity radial direction magnetic bearing, can be used as the contactless support of rotary component in the machinery such as motor, lathe.
Background technique
Be applied to the magnetic levitation technology of ground installation, often require radial direction magnetic bearing can support larger rotor gravity, as magnetic suspension high speed motor, magnetic levitation energy storage flywheel etc.Being applied at present the axial magnetic axle construction that ground supporting uses mainly contains following several: the pure electromagnetic bearing of the first, the disturbing force that the magnetic pull that produces by electromagnetism magnetic field overcomes rotor gravity and is subject to.This magnetic bearing volume is larger, and the electric current of use is large, power consumption is large, and when large bearing capacity, the coil copper loss will sharply rise especially.It two is passive magnetic bearings, and it utilizes suction or repulsion between permanent magnet to produce suspending power.This kind structure magnetic bearing is consumed power not, but its rigidity, damping are uncontrollable, and on the General Requirements rotor, permanent magnet is installed, and is not suitable for being applied in the equipment of High Rotation Speed.It three is permanent magnet biased magnetic bearings, and main bearing capacity is born in the magnetic field that this kind magnetic bearing utilizes permanent magnet to produce, and electromagnetism magnetic field provides auxiliary adjusting power, thereby this magnetic bearing can reduce to control electric current greatly, reduces the wastage.Yet, each bias magnetic electrode structure of traditional permanent magnet offset radial magnetic bearing is symmetrical, the permanent magnetic of magnetic pole of respectively setovering on each degrees of freedom is cancelled each other, in some Diagnosing System for Oil Pumps, rotor is suspended in the central position usually, this moment, permanent magnet biased magnetic bearing still needed logical larger electric current to overcome gravity to produce larger unilateral magnetic force, so the volume of this kind magnetic bearing and power consumption are still considerable.In view of the foregoing, existing magnetic bearing structure can't satisfy the requirement of the larger constant bearing capacity in Ground Application.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, provide a kind of permanent magnetic that utilizes to overcome gravity, can regulate electromagnetic force simultaneously and carry out ACTIVE CONTROL, volume is little, large bearing capacity radial direction magnetic bearing low in energy consumption.
one of technical solution of the present invention is: the large bearing capacity radial direction magnetic bearing, by permanent magnet, control side stator magnetic guiding loop, control the side stator core, field coil, control the side rotor core, load-bearing side stator magnetic guiding loop, the large end of load-bearing side stator core, load-bearing side stator core small end, the rotor core of load-bearing side, the rotor magnetic guiding loop forms, stator core is divided into the two ends, left and right, be respectively and control side and load-bearing side, control the side stator core and comprise X, 4 magnetic pole of the stator on the positive negative direction of Y, connect by yoke section between them, each magnetic pole of the stator is wound with field coil, the large end of load-bearing side stator core is that a major axis is to magnetic pole of the stator, load-bearing side stator core small end is a short axial magnetic pole of the stator, control the side stator core outside for controlling side stator magnetic guiding loop, the large end of load-bearing side stator core and load-bearing side stator core small end are outside is load-bearing side stator magnetic guiding loop, permanent magnet is presented axially in to be controlled between side magnetic guiding loop and load-bearing side magnetic guiding loop, control the side stator core inner for controlling the side rotor core, the large end of load-bearing side stator core and load-bearing side stator core small end are inner is the rotor core of load-bearing side, control side stator core internal surface and leave certain gap with control side rotor core outer surface, formation control side air gap, the large end of load-bearing side rotor core, load-bearing side rotor core small end internal surface and load-bearing side rotor core outer surface leave certain gap, form load-bearing side air gap, the rotor magnetic guiding loop is arranged on control side rotor core and the rotor core of load-bearing side is inner, and the both sides rotor core is coupled together, form flux path.The large bearing capacity radial direction magnetic bearing is characterized in that: the axial length of load-bearing side stator core small end is 0.4～0.7 times of the large end of load-bearing side stator core.Described permanent magnet is an axial annulus, magnetizes vertically, adopts rare earth permanent-magnetic material or ferrite permanent-magnet materials to make.The large end of load-bearing side stator core, load-bearing side stator core small end, control side stator magnetic guiding loop, load-bearing side stator magnetic guiding loop and rotor magnetic guiding loop and all adopt the good material of magnetic property, make as any one of electrical pure iron, 1J50 or silicon steel.Control side gap length is 0.5～1 times of load-bearing side gap length.
The principle of such scheme is: the present invention is divided into radial direction magnetic bearing the load-bearing side and controls two parts of side, and the load-bearing side is used for overcoming rotor gravity, is used for overcoming and control side the disturbing force that rotor is subject to.Permanent magnet is by controlling side stator magnetic guiding loop, the stator core of control side, control side air gap, the rotor core of control side, rotor magnetic guiding loop, the rotor core of load-bearing side, load-bearing side air gap, consisting of magnetic circuit through the large end of load-bearing side stator core and small end, load-bearing side stator magnetic guiding loop simultaneously.Electromagnetic circuit consists of the loop in the stator core of control side, control side air gap, the rotor core of control side.In the load-bearing side, because two stator core magnetic pole axial lengths are different, permanent magnetic circuit produces respectively the permanent magnetism pulling force of different sizes at the air gap place of large and small two ends iron core, after two power are synthetic to the unilateral magnetic force of rotor in order to overcome rotor gravity; Controlling side, permanent magnetic circuit is respectively at 4 air gap place's generation bias magnetic fields that stator core is corresponding, electromagnetic circuit is regulated magnetic field in this air gap place's generation, because rotor gravity is born by the permanent magnetic of load-bearing side, control side and only need bear the disturbing force that rotor is subject to, therefore compare the permanent magnet offset radial magnetic bearing structure that existing two ends are all symplex structure, the suspension electric current of this structure is less, and the bearing volume is also less.Permanent magnetic circuit of the present invention is: magnetic flux is from the permanent magnet N utmost point, by control side stator magnetic guiding loop, control the side stator core, control the side air gap, control the side rotor core, interior magnetic guiding loop to rotor core, the load-bearing side air gap of load-bearing side, the process load-bearing large end of side stator core and load-bearing side stator core small end, load-bearing side outer magnetizer are got back to the permanent magnet S utmost point respectively to be divided into two-way, form the main magnetic circuit of magnetic suspension bearing, as shown in Figure 1.The magnetic flux that electromagnetic circuit produces after the X postive direction magnetic pole field coil energising is as example: X postive direction magnetic pole of the stator, X postive direction air gap, control the side rotor core, be divided into three the tunnel respectively by after X negative direction, Y postive direction and Y negative direction air gap, get back to X postive direction magnetic pole through magnetic pole of the stator corresponding to each air gap and consist of the closed-loop path, as shown in Figure 3.
Two of technical solution of the present invention is: the large bearing capacity radial direction magnetic bearing is comprised of permanent magnet, control side stator magnetic guiding loop, the stator core of control side, field coil, the rotor core of control side, load-bearing side stator magnetic guiding loop, the large end of load-bearing side stator core, load-bearing side stator core small end, the rotor core of load-bearing side, rotor magnetic guiding loop.Stator core is divided into the two ends, left and right, is respectively to control side and load-bearing side.The stator core of control side comprises 4 magnetic pole of the stator on the positive negative direction of X, Y, connect by yoke section between them, each magnetic pole of the stator is wound with field coil, the large end of load-bearing side stator core is the long magnetic pole of the stator of a length of pole arc, load-bearing side stator core small end is a magnetic pole of the stator that the length of pole arc is shorter, and the small end length of pole arc is generally 0.4～0.7 times of large end.control the side stator core outside for controlling side stator magnetic guiding loop, the large end of load-bearing side stator core and load-bearing side stator core small end are outside is load-bearing side stator magnetic guiding loop, permanent magnet is presented axially in to be controlled between side magnetic guiding loop and load-bearing side magnetic guiding loop, control the side stator core inner for controlling the side rotor core, the large end of load-bearing side stator core and load-bearing side stator core small end are inner is the rotor core of load-bearing side, control side stator core internal surface and leave certain gap with control side rotor core outer surface, formation control side air gap, the large end of load-bearing side rotor core, load-bearing side rotor core small end internal surface and load-bearing side rotor core outer surface leave certain gap, form load-bearing side air gap, control side air gap is generally 0.5～1 times of load-bearing side air gap.The rotor magnetic guiding loop is arranged on control side rotor core and the rotor core of load-bearing side is inner, and the both sides rotor core is coupled together, and forms flux path.
The principle of such scheme is: the present invention is divided into radial direction magnetic bearing the load-bearing side and controls two parts of side, and the load-bearing side is used for overcoming rotor gravity, is used for overcoming and control side the disturbing force that rotor is subject to.Permanent magnet is by controlling side stator magnetic guiding loop, the stator core of control side, control side air gap, the rotor core of control side, rotor magnetic guiding loop, the rotor core of load-bearing side, load-bearing side air gap, consisting of magnetic circuit through the large end of load-bearing side stator core and small end, load-bearing side stator magnetic guiding loop simultaneously.Electromagnetic circuit consists of the loop in the stator core of control side, control side air gap, the rotor core of control side.In the load-bearing side, because two stator core magnetic pole lengths of pole arc are inconsistent, permanent magnetic circuit produces respectively the permanent magnetism pulling force of different sizes at the air gap place of large and small two ends magnetic pole, after two power are synthetic to the unilateral magnetic force of rotor in order to overcome rotor gravity; Controlling side, permanent magnetic circuit is respectively at 4 air gap place's generation bias magnetic fields that stator core is corresponding, electromagnetic circuit is regulated magnetic field in this air gap place's generation, because rotor gravity is born by the permanent magnetic of load-bearing side, control side and only need bear the disturbing force that rotor is subject to, therefore compare the permanent magnet offset radial magnetic bearing structure that existing two ends are all symplex structure, the suspension electric current of this structure is less, and the bearing volume is also less.Permanent magnetic circuit of the present invention is: magnetic flux is from the permanent magnet N utmost point, by control side stator magnetic guiding loop, control the side stator core, control the side air gap, control the side rotor core, interior magnetic guiding loop to rotor core, the load-bearing side air gap of load-bearing side, the process load-bearing large end of side stator core and load-bearing side stator core small end, load-bearing side outer magnetizer are got back to the permanent magnet S utmost point respectively to be divided into two-way, form the main magnetic circuit of magnetic suspension bearing, as shown in Figure 4.The magnetic flux that electromagnetic circuit produces take Y-direction magnetic pole field coil is as example: Y postive direction magnetic pole of the stator, Y postive direction air gap, control side rotor core, Y negative direction air gap, Y negative direction magnetic pole, get back to Y postive direction magnetic pole and consist of the closed-loop path through controlling the side rotor core, as shown in Figure 5.
The present invention's advantage compared with prior art is: the present invention is divided into radial direction magnetic bearing the load-bearing side and controls two parts of side.Without field coil, utilize two magnetic poles by the inconsistent structure generation unilateral magnetic force of area at load-bearing side magnetic pole, make the load-bearing side only need less magnetic pole area can overcome larger gravity.Therefore, the permanent magnet offset radial magnetic bearing structure that is all symplex structure with existing both sides is compared, and when being applied to identical load-bearing occasion, this structure has been dwindled volume, has alleviated weight, has reduced 4 field coils, has improved the reliability of system.Simultaneously, this radial direction magnetic bearing can keep rotor stability to suspend because rotor gravity is born by the load-bearing side fully therefore the control side only need pass to less electric current.Therefore, another advantage of this structure is that the suspension electric current is little, and copper loss is little.
Description of drawings
Fig. 1 is the large bearing capacity radial direction magnetic bearing axial, cross-sectional view of one of the technology of the present invention solution;
Fig. 2 is the large bearing capacity radial direction magnetic bearing load-bearing side stator core structure figure of one of the technology of the present invention solution;
Fig. 3 is that one of the technology of the present invention solution, two large bearing capacity radial direction magnetic bearing are controlled side shaft to end view drawing;
Fig. 4 is two large bearing capacity radial direction magnetic bearing axial, cross-sectional view of the technology of the present invention solution;
Fig. 5 is that two large bearing capacity radial direction magnetic bearing load-bearing side shaft of the technology of the present invention solution is to end view drawing.
Embodiment
As shown in Figure 1, the unequal permanent magnet biased internal rotor radial magnetic bearing of load-bearing side magnetic pole axial length for one of the technology of the present invention solution, be citation form of the present invention, it is controlled 3,4 control side field coils of side stator core 4,1 control side rotor magnetic guiding loop, 7,1 large end 8 of load-bearing side stator core of 1 load-bearing side stator magnetic guiding loop, 11,1 rotor magnetic guiding loop 12 of 9,1 load-bearing side rotor core of 1 load-bearing side stator core small end and is formed by 1 permanent magnet 1,12,1 of control side stator magnetic guiding loop.Wherein control side stator core 3 and comprised 4 magnetic pole of the stator on magnetic bearing one end X, Y-direction, connect by yoke section between magnetic pole, each magnetic pole of the stator of controlling side is wound with field coil 4, controls side stator core 3 outside for controlling side stator magnetic guiding loop 2, as shown in Figure 3.The large end 8 of load-bearing side stator core and load-bearing side stator core small end 9 have formed 2 magnetic pole of the stator on magnetic bearing the other end Y-direction, pass through the different yoke section connection in the middle part of iron core of axial length between magnetic pole, the axial length of load-bearing side stator core small end 9 is 0.4～0.7 times of large end 8, occurrence is determined by rotor weight, rotor is heavier, value is less, as shown in Figure 2.The large end 8 of load-bearing side stator core, load-bearing side stator core small end 9 be outside is load-bearing side stator magnetic guiding loop 7, and permanent magnet 1 is presented axially in to be controlled between side stator magnetic guiding loop 2 and load-bearing side stator magnetic guiding loop 7.control side stator core 3 inner for controlling side rotor core 6, control side stator core 3 internal surfaces and leave certain gap with control side rotor core 6 outer surfaces, formation control side air gap 5, the large end 8 of load-bearing side stator core, load-bearing side stator core small end 9 is inner is load-bearing side rotor core 11, the large end 8 of load-bearing side stator core, load-bearing side stator core small end 9 internal surfaces and load-bearing side rotor core 11 outer surfaces leave certain gap, form load-bearing side air gap 10, control side air gap is 0.5～1 times of load-bearing side air gap, rotor magnetic guiding loop 12 is arranged on controls side rotor core 6 and load-bearing side rotor core 11 inside, and will control side rotor core 6 and couple together with load-bearing side rotor core 11, form flux path.
As shown in Figure 4, be two the unequal permanent magnet biased internal rotor radial magnetic bearing of the load-bearing side magnetic pole length of pole arc of the technology of the present invention solution, it is controlled 2,1 of side stator magnetic guiding loop by 1 permanent magnet 1,1 and controls 3,4 of side stator cores and control 4,1 of side field coil and control side rotor magnetic guiding loop, 7,1 large end 8 of load-bearing side stator core of 1 load-bearing side stator magnetic guiding loop, 11,1 rotor magnetic guiding loop 12 of 9,1 load-bearing side rotor core of 1 load-bearing side stator core small end and form.Wherein control side stator core 3 and comprised 4 magnetic pole of the stator on magnetic bearing one end X, Y-direction, connect by yoke section between magnetic pole, each magnetic pole of the stator of controlling side is wound with field coil 4, controls side stator core 3 outside for controlling side stator magnetic guiding loop 2, as shown in Figure 3.The large end 8 of load-bearing side stator core and load-bearing side stator core small end 9 have formed 2 magnetic pole of the stator on magnetic bearing the other end Y-direction, connect by yoke section between magnetic pole, the length of pole arc of load-bearing side stator core small end 9 is 0.4～0.7 times of large end 8, occurrence is determined by rotor weight, rotor is heavier, value is less, as shown in Figure 5.The large end 8 of load-bearing side stator core, load-bearing side stator core small end 9 be outside is load-bearing side stator magnetic guiding loop 7, and permanent magnet 1 is presented axially in to be controlled between side stator magnetic guiding loop 2 and load-bearing side stator magnetic guiding loop 7.control side stator core 3 inner for controlling side rotor core 6, control side stator core 3 internal surfaces and leave certain gap with control side rotor core 6 outer surfaces, formation control side air gap 5, the large end 8 of load-bearing side stator core, load-bearing side stator core small end 9 is inner is load-bearing side rotor core 11, the large end 8 of load-bearing side stator core, load-bearing side stator core small end 9 internal surfaces and load-bearing side rotor core 11 outer surfaces leave certain gap, form load-bearing side air gap 10, control side air gap is 0.5～1 times of load-bearing side air gap, rotor magnetic guiding loop 12 is arranged on controls side rotor core 6 and load-bearing side rotor core 11 inside, and will control side rotor core 6 and couple together with load-bearing side rotor core 11, form flux path.
Each technological scheme of the invention described above large end 8 of load-bearing side stator core, load-bearing side stator core small end 9, control side stator magnetic guiding loop 2, load-bearing side stator magnetic guiding loop 7 and rotor magnetic guiding loop 12 used all made with the good material of magnetic property, as magnetic materials such as electrical pure iron, various carbon steel, cast iron, cast steel, alloyed steel, 1J50 and 1J79.Controlling side stator core 3, control side rotor core 6 and load-bearing side rotor core 11 can form with magnetic property good electric thin steel sheet such as the magnetic material punching presses such as electrical pure iron, electrical steel plate DR510, DR470, DW350,1J50 and the 1J79 system of changing.The material of permanent magnet 1 is the good rare-earth permanent magnet of magnetic property or ferrite permanent magnet, and permanent magnet 1 is an axial annulus, magnetizes vertically.After the good electromagnetic wire coiling of field coil 4 use conductions, paint-dipping drying forms.
Claims (10)
1. large bearing capacity radial direction magnetic bearing, by permanent magnet (1), control side stator magnetic guiding loop (2), control side stator core (3), field coil (4), control side rotor core (6), load-bearing side stator magnetic guiding loop (7), the large end of load-bearing side stator core (8), load-bearing side stator core small end (9), load-bearing side rotor core (11), rotor magnetic guiding loop (12) forms, it is characterized in that: stator core is divided into the two ends, left and right, be respectively and control side and load-bearing side, control side stator core (3) and comprise X, 4 magnetic pole of the stator on the positive negative direction of Y, connect by yoke section between them, each magnetic pole of the stator is wound with field coil (4), the large end of load-bearing side stator core (8) is that a major axis is to magnetic pole of the stator, load-bearing side stator core small end (9) is a short axial magnetic pole of the stator, control side stator core (3) outside for controlling side stator magnetic guiding loop (2), the large end of load-bearing side stator core (8) and load-bearing side stator core small end (9) are outside is load-bearing side stator magnetic guiding loop (7), permanent magnet (1) is presented axially in to be controlled between side magnetic guiding loop (2) and load-bearing side magnetic guiding loop (7), control side stator core (3) inner for controlling side rotor core (6), the large end of load-bearing side stator core (8) and load-bearing side stator core small end (9) are inner is load-bearing side rotor core (11), control side stator core (3) internal surface and leave certain gap with control side rotor core (6) outer surface, formation control side air gap (5), the large end of load-bearing side rotor core (8), load-bearing side rotor core small end (9) internal surface and load-bearing side rotor core (11) outer surface leave certain gap, form load-bearing side air gap (10), rotor magnetic guiding loop (12) is arranged on controls side rotor core (6) and load-bearing side rotor core (11) inside, and the both sides rotor core is coupled together, form flux path.
2. large bearing capacity radial direction magnetic bearing according to claim 1, it is characterized in that: the axial length of load-bearing side stator core small end (9) is 0.4～0.7 times of the large end of load-bearing side stator core (8).
3. large bearing capacity radial direction magnetic bearing according to claim 1, it is characterized in that: the large end of described load-bearing side stator core (8), load-bearing side stator core small end (9), control side stator magnetic guiding loop (2), load-bearing side stator magnetic guiding loop (7) and rotor magnetic guiding loop (12) and all adopt the good material of magnetic property, for any one of electrical pure iron, 1J50 or silicon steel made.
4. large bearing capacity radial direction magnetic bearing according to claim 1, it is characterized in that: described permanent magnet (1) is an axial annulus, magnetizes vertically.
5. large bearing capacity radial direction magnetic bearing according to claim 1 is characterized in that: control side air gap (5) length and be load-bearing side air gap (10) length 0.5～1 times.
6. large bearing capacity radial direction magnetic bearing, by permanent magnet (1), control side stator magnetic guiding loop (2), control side stator core (3), field coil (4), control side rotor core (6), load-bearing side stator magnetic guiding loop (7), the large end of load-bearing side stator core (8), load-bearing side stator core small end (9), load-bearing side rotor core (11), rotor magnetic guiding loop (12) forms, it is characterized in that: stator core is divided into the two ends, left and right, be respectively and control side and load-bearing side, control side stator core (3) and comprise X, 4 magnetic pole of the stator on the positive negative direction of Y, connect by yoke section between them, each magnetic pole of the stator is wound with field coil (4), the large end of load-bearing side stator core (8) is a large polar arc magnetic pole of the stator, load-bearing side stator core small end (9) is a little polar arc magnetic pole of the stator, control side stator core (3) outside for controlling side stator magnetic guiding loop (2), the large end of load-bearing side stator core (8) and load-bearing side stator core small end (9) are outside is load-bearing side stator magnetic guiding loop (7), permanent magnet (1) is presented axially in to be controlled between side magnetic guiding loop (2) and load-bearing side magnetic guiding loop (7), control side stator core (3) inner for controlling side rotor core (6), the large end of load-bearing side stator core (8) and load-bearing side stator core small end (9) are inner is load-bearing side rotor core (11), control side stator core (3) internal surface and leave certain gap with control side rotor core (6) outer surface, formation control side air gap (5), the large end of load-bearing side rotor core (8), load-bearing side rotor core small end (9) internal surface and load-bearing side rotor core (11) outer surface leave certain gap, form load-bearing side air gap (10), rotor magnetic guiding loop (12) is arranged on controls side rotor core (6) and load-bearing side rotor core (11) inside, and the both sides rotor core is coupled together, form flux path.
7. large bearing capacity radial direction magnetic bearing according to claim 6, it is characterized in that: the length of pole arc of load-bearing side stator core small end (9) is 0.4～0.7 times of the large end of load-bearing side stator core (8).
8. large bearing capacity radial direction magnetic bearing according to claim 6, it is characterized in that: the large end of described load-bearing side stator core (8), load-bearing side stator core small end (9), control side stator magnetic guiding loop (2), load-bearing side stator magnetic guiding loop (7) and rotor magnetic guiding loop (12) and all adopt the good material of magnetic property, for any one of electrical pure iron, 1J50 or silicon steel made.
9. large bearing capacity radial direction magnetic bearing according to claim 6, it is characterized in that: described permanent magnet (1) is an axial annulus, magnetizes vertically.
10. large bearing capacity radial direction magnetic bearing according to claim 6 is characterized in that: control side air gap (5) length and be load-bearing side air gap (10) length 0.5～1 times.
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| CN 201110006754 CN102072249B (en) | 2011-01-13 | 2011-01-13 | Large-bearing-capacity radial magnetic bearing |
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| CN 201110006754 CN102072249B (en) | 2011-01-13 | 2011-01-13 | Large-bearing-capacity radial magnetic bearing |
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| CN102072249A CN102072249A (en) | 2011-05-25 |
| CN102072249B true CN102072249B (en) | 2013-05-08 |
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| CN 201110006754 Expired - Fee Related CN102072249B (en) | 2011-01-13 | 2011-01-13 | Large-bearing-capacity radial magnetic bearing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103836069A (en) * | 2012-11-26 | 2014-06-04 | 张玉宝 | Magnetic bearing and control mode thereof |
| CN104179801A (en) * | 2013-05-26 | 2014-12-03 | 张玉宝 | Radial-axial magnetic suspension composite unit |
| CN104141717B (en) * | 2014-06-30 | 2016-08-17 | 山东科技大学 | A kind of for suppressing big damping hybrid magnetoresistive Buddhist nun's device of rotor oscillation |
| CN104214218A (en) * | 2014-08-07 | 2014-12-17 | 南京航空航天大学 | Method and structure capable of balancing static loads in magnetic bearing |
| 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 |
| CN107181359B (en) * | 2017-06-15 | 2023-07-25 | 北京昆腾迈格技术有限公司 | Multilayer permanent magnet bias magnetic suspension unit, magnetic suspension motor and household air conditioner |
| CN111022499B (en) * | 2019-12-31 | 2023-09-29 | 淮阴工学院 | Radial large bearing capacity hybrid magnetic bearing |
| CN111828475B (en) * | 2020-06-22 | 2022-03-04 | 北京控制工程研究所 | Radial magnetic bearing structure and multi-degree-of-freedom magnetic suspension mechanism comprising same |
| CN115076234A (en) * | 2022-07-21 | 2022-09-20 | 重庆开山流体机械有限公司 | Asymmetric electromagnetic bearing |
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| CN1648478A (en) * | 2005-01-27 | 2005-08-03 | 北京航空航天大学 | Low power consumption permanent magnet biased internal rotor radial magnetic bearing |
| CN1707127A (en) * | 2004-12-30 | 2005-12-14 | 北京航空航天大学 | Low-power consumption permanent magnetic offset mixed radial magnetic bearing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001224154A (en) * | 2000-02-10 | 2001-08-17 | Japan Science & Technology Corp | Method and apparatus for multipole magnetically levitating rotation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1707127A (en) * | 2004-12-30 | 2005-12-14 | 北京航空航天大学 | Low-power consumption permanent magnetic offset mixed radial magnetic bearing |
| CN1648478A (en) * | 2005-01-27 | 2005-08-03 | 北京航空航天大学 | Low power consumption permanent magnet biased internal rotor radial magnetic bearing |
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| JP特开2001-224154A 2001.08.17 |
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