CN100458199C - Permanent magnet biased axial magnetic suspension bearing - Google Patents
Permanent magnet biased axial magnetic suspension bearing Download PDFInfo
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- CN100458199C CN100458199C CNB2007100251391A CN200710025139A CN100458199C CN 100458199 C CN100458199 C CN 100458199C CN B2007100251391 A CNB2007100251391 A CN B2007100251391A CN 200710025139 A CN200710025139 A CN 200710025139A CN 100458199 C CN100458199 C CN 100458199C
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- permanent magnet
- magnetic
- axial
- edge face
- guiding loop
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Abstract
This invention relates to a magnet offset axial magnetic-suspension bearing including a stator sleeve, a control winding, a stator disk, an axial magnetic pole, a ring magnet, a magnetic-conduction ring and a main shaft sleeved with a thrust disk, which is simple, small, light with small power loss.
Description
One, technical field
Permanent magnet biased axial magnetic suspension bearing of the present invention belongs to the hybrid magnetic suspension bearing in the magnetic suspension bearing.
Two, background technique
At present, the magnetic suspension bearing difference of setting up mode according to magnetic field can be divided into three types of active, passive-type and hybrid types.
Active magnetic suspension bearing is set up bias magnetic field by feeding galvanic magnetic bias winding in air gap, the control winding that all is subjected to the alternating current of real-time control by the feeding size and Orientation is set up controlling magnetic field in air gap, stack and the counteracting in air gap of this two magnetic fields produced the magnetic field suction that size and Orientation can ACTIVE CONTROL, thereby realized the stable suspersion of rotor, such magnetic suspension bearing rigidity is big, can accurate control, but it is also all bigger to produce unit bearing capacity required volume, weight and power consumption.
The suspension that the passive-type magnetic suspension bearing utilizes suction between the magnetic material or repulsion to realize rotor, required controller is simple, and power consumption is little, but rigidity and damping are also all smaller.
The hybrid magnetic suspension bearing combines the characteristics of active magnetic suspension bearing and passive-type magnetic suspension bearing, adopt permanent-magnet material to substitute the magnetic bias coil and produce required bias magnetic field, so active magnetic suspension bearing much less of electromagnetic coil turn ratio, reduced the power loss of magnetic suspension bearing largely, reduced to produce the required volume and weight of unit bearing capacity, above characteristics make it have the field of strict demand that irreplaceable advantage is arranged to volume and power consumption, so the hybrid magnetic suspension bearing has become an important directions of magnetic suspension bearing research and development.
Three, summary of the invention
The objective of the invention is to propose a kind of simple in structure, volume is little, and is in light weight, the permanent magnet biased axial magnetic suspension bearing that power consumption is few.
Permanent magnet biased axial magnetic suspension bearing of the present invention comprises stator sleeve, axial pole, magnetic guiding loop, main shaft, annular permanent magnet, stator disk, thrust disc and control winding.Described stator disk is sleeved on stator sleeve inside, and the exterior edge face of this stator disk contacts with the stator sleeve interior edge face; Described control winding is positioned at the space that stator sleeve and stator disk surround; Described axial pole is sleeved on stator disk inside, and the exterior edge face of this axial pole contacts with the stator disk interior edge face; Described annular permanent magnet is embedded between axial pole and the magnetic guiding loop, and the exterior edge face of this annular permanent magnet contacts with the axial pole interior edge face, and the interior edge face of this annular permanent magnet contacts with the magnetic guiding loop exterior edge face; Described main shaft is installed in the axis hole that is formed by the magnetic guiding loop interior edge face, and has air gap between the outerface of spindle and the magnetic guiding loop interior edge face; Described thrust disc is sleeved on the main shaft, place axial end and the axial end of annular permanent magnet and the common interior annulus that forms of axial end of magnetic guiding loop of axial pole, and there is air gap between the axial end of the axial end of thrust disc and axial pole, the axial end of annular permanent magnet and magnetic guiding loop, annular permanent magnet constitutes magnetic loop by axial pole, thrust disc, magnetic guiding loop, sets up bias magnetic field in the air gap between air gap between axial pole and thrust disc and thrust disc and the magnetic guiding loop.The control winding forms magnetic loop by stator sleeve, stator disk, thrust disc after feeding electric current, set up controlling magnetic field in the air gap between axial pole and thrust disc.Its basic functional principle is: when thrust disc is positioned at the neutral position, promptly during the equilibrium position, because the symmetry properties of structure, the magnetic flux that annular permanent magnet produces equates that at the air gap on the thrust disc right side and the air gap place on the left side this moment, left and right sides suction equated.If thrust disc is subjected to the outer power of disturbing left at this moment, thrust disc will depart from the equilibrium position to left movement, cause the variation of the magnetic flux of bias magnetic field in the left and right sides air gap that annular permanent magnet produces, promptly the air gap on the left side reduces, and the magnetic flux of bias magnetic field increases in the air gap; The air gap on the right side increases, and the magnetic flux of bias magnetic field reduces in the air gap.Because square being directly proportional of magnetic field suction and magnetic field flux amount when the magnetic pole area is certain, therefore suction left is greater than to the right suction, and before controlling winding and not feeding electric current, thrust disc can't be got back to the equilibrium position.This moment, displacement transducer detected the displacement amount that thrust disc departs from its reference position, controller is transformed into the control electric current with this displacement signal, this electric current control winding of flowing through is set up a controlling magnetic field in unshakable in one's determination and air gap, controlling magnetic field in the air gap and bias magnetic field stack, the magnetic flux in magnetic field in the air gap of the thrust disc left side is reduced, the magnetic flux in magnetic field increases in the air gap of the right side, produces a suction to the right, and thrust disc is retracted the equilibrium position.In like manner, if thrust disc is subjected to outer disturbance to the right, the degenerative permanent magnet biased axial magnetic suspension bearing in band position is by the electric current in the controller control winding, and the size of regulating each air-gap flux can keep thrust disc in the equilibrium position all the time.
Permanent magnet biased axial magnetic suspension bearing of the present invention, utilize the annular permanent magnet of two radial magnetizings to set up quiescent biasing magnetic field, form closed magnetic circuit by magnetic guiding loop, thrust disc and axial pole, only need a cover control winding to set up controlling magnetic field, form closed magnetic circuit by stator sleeve, stator disk and axial pole, volume, weight and power consumption have been dwindled, all have broad application prospects in various magnetic suspension systems, fields such as Aero-Space and naval vessels that it is used in then have more significance.
Four, description of drawings
Fig. 1 is a permanent magnet biased axial magnetic suspension bearing structural plan schematic representation.
Label title among Fig. 1: 1, stator sleeve.2, axial pole.3, magnetic guiding loop.4, main shaft.5, annular permanent magnet.6, stator disk.7, thrust disc.8, control winding.
Fig. 2 is the permanent magnet biased axial magnetic suspension bearing schematic diagram.
Label title among Fig. 2: single arrow is represented permanent magnet bias magnetic field, and double-head arrow represents to control the magnetic field that winding produces.
Five, embodiment
Fig. 1 is a permanent magnet biased axial magnetic suspension bearing of the present invention structural plan schematic representation, stator sleeve 1 among the figure, axial pole 2, magnetic guiding loop 3, stator disk 6 and thrust disc 7 are solid soft magnetic material and make, annular permanent magnet 5 is made by rare earth permanent-magnetic material, and main shaft 4 is made by non-magnet_conductible material.Stator disk 6 is sleeved on stator sleeve 1 inside, its exterior edge face contacts with stator sleeve 1 interior edge face, the control winding 8 of enameled cable coiled is positioned at the space that stator sleeve 1 and stator disk 6 surround, axial pole 2 is sleeved on stator disk 6 inside, its exterior edge face contacts with stator disk 6 interior edge faces, annular permanent magnet 5 is embedded between axial pole 2 and the magnetic guiding loop 3, its exterior edge face contacts with axial pole 2 interior edge faces, interior edge face contacts with magnetic guiding loop 3 exterior edge faces, and the thrust disc 7 that is sleeved on the main shaft 4 places in the stator sleeve 1.Two annular permanent magnets form magnetic loop by the air gap between the air gap between axial pole, axial pole and the thrust disc, thrust disc, thrust disc and the magnetic guiding loop, magnetic guiding loop respectively, set up bias magnetic field in the air gap between air gap between axial pole and thrust disc and thrust disc and the magnetic guiding loop.After feeding electric current in the control winding, form magnetic loop, in main air gap, set up controlling magnetic field by the air gap between stator sleeve, stator disk, axial pole and the thrust disc, thrust disc.
Claims (1)
1, a kind of permanent magnet biased axial magnetic suspension bearing, it is characterized in that: comprise stator sleeve (1), axial pole (2), magnetic guiding loop (3), main shaft (4), annular permanent magnet (5), stator disk (6), thrust disc (7) and control winding (8), described stator disk (6) is sleeved on stator sleeve (1) inside, and the exterior edge face of this stator disk (6) contacts with stator sleeve (1) interior edge face; Described control winding (8) is positioned at the space that stator sleeve (1) and stator disk (6) surround; Described axial pole (2) is sleeved on stator disk (6) inside, and the exterior edge face of this axial pole (2) contacts with stator disk (6) interior edge face; Described annular permanent magnet (5) is embedded between axial pole (2) and the magnetic guiding loop (3), and the exterior edge face of this annular permanent magnet (5) contacts with axial pole (2) interior edge face, and the interior edge face of this annular permanent magnet (5) contacts with magnetic guiding loop (3) exterior edge face; Described main shaft (4) is installed in the axis hole that is formed by magnetic guiding loop (3) interior edge face, and has air gap between main shaft (4) outer surface and magnetic guiding loop (3) interior edge face; Described thrust disc (7) is sleeved on the main shaft (4), place axial end and the axial end of annular permanent magnet (5) and the common interior annulus that forms of axial end of magnetic guiding loop (3) of axial pole (2), and have air gap between the axial end of the axial end of the axial end of thrust disc (7) and axial pole (2), annular permanent magnet (5) and magnetic guiding loop (3), annular permanent magnet (5) constitutes magnetic loop by axial pole (2), thrust disc (7), magnetic guiding loop (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100251391A CN100458199C (en) | 2007-07-13 | 2007-07-13 | Permanent magnet biased axial magnetic suspension bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100251391A CN100458199C (en) | 2007-07-13 | 2007-07-13 | Permanent magnet biased axial magnetic suspension bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101092990A CN101092990A (en) | 2007-12-26 |
| CN100458199C true CN100458199C (en) | 2009-02-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100251391A Expired - Fee Related CN100458199C (en) | 2007-07-13 | 2007-07-13 | Permanent magnet biased axial magnetic suspension bearing |
Country Status (1)
| Country | Link |
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| CN (1) | CN100458199C (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100545474C (en) * | 2008-03-17 | 2009-09-30 | 南京化工职业技术学院 | Low power consumption 5-freedom permanent magnetism off-set magnetic suspension bearing system |
| CN101619745B (en) * | 2008-07-04 | 2011-02-02 | 沈阳黎明航空发动机(集团)有限责任公司 | Force-bearing device capable of bearing large axial load |
| CN102052402B (en) * | 2009-10-30 | 2013-06-19 | 张平 | Permanent magnet suspension bearing and permanent magnet suspension bearing component |
| CN101893038A (en) * | 2010-08-04 | 2010-11-24 | 南京化工职业技术学院 | Permanent magnet biased axial magnetic bearing |
| CN102588433B (en) * | 2011-01-11 | 2016-08-17 | 北京京冶永磁悬浮轴承有限公司 | A kind of permanent-magnet suspension bearing and mounting structure thereof |
| CN102588434B (en) * | 2011-01-11 | 2016-06-01 | 北京京冶永磁悬浮轴承有限公司 | A kind of permanent-magnet suspension bearing and mounting structure thereof |
| CN102562800A (en) * | 2012-02-28 | 2012-07-11 | 南京化工职业技术学院 | Permanent-magnet-biased axial magnetic bearing |
| CN102644662B (en) * | 2012-05-03 | 2014-12-03 | 洛阳润环电机轴承有限公司 | Magnetic suspension bearing |
| CN103216528A (en) * | 2013-04-22 | 2013-07-24 | 南京航空航天大学 | One-side hybrid axial magnetic bearing |
| CN104454989B (en) * | 2013-09-13 | 2017-03-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Magnetic suspension bearing and centrifugal compressor |
| CN103925291B (en) * | 2014-03-25 | 2016-03-30 | 中国人民解放军海军工程大学 | A kind of permanent magnet bias mixing axial magnetic bearing |
| CN105090245B (en) * | 2015-09-15 | 2017-10-20 | 北京航空航天大学 | A kind of asymmetric permanent-magnetic biased axial magnetic bearing |
| CN106438691A (en) * | 2016-10-13 | 2017-02-22 | 中国人民解放军海军工程大学 | Permanent magnet bias hybrid axial magnetic bearing |
| CN108087425A (en) * | 2018-01-20 | 2018-05-29 | 营口万意达智能装备科技有限公司 | A kind of servomotor magnetic thrust bearing |
| CN108506343B (en) * | 2018-04-12 | 2020-02-07 | 南京邮电大学 | Half-freedom-degree axial-magnetizing hybrid axial magnetic bearing |
| CN108547868B (en) * | 2018-04-12 | 2020-02-07 | 南京邮电大学 | Semi-freedom degree radial magnetizing hybrid axial magnetic bearing |
| CN108644228B (en) * | 2018-05-22 | 2019-08-16 | 北京航空航天大学 | A kind of small volume low watt consumption axial magnetic suspension bearing |
| CN108953376B (en) * | 2018-06-26 | 2020-06-26 | 南京邮电大学 | Semi-freedom degree mixed axial magnetic bearing with permanent magnet on rotor |
| CN110748562B (en) * | 2019-09-17 | 2021-04-13 | 南京航空航天大学 | Surrounding permanent magnet biased axial-radial magnetic suspension bearing |
| CN113048148B (en) * | 2019-12-28 | 2023-09-01 | 坎德拉(深圳)新能源科技有限公司 | Magnetic bearing and rotating mechanism using same |
| CN114941653B (en) * | 2022-06-10 | 2023-05-02 | 珠海格力电器股份有限公司 | Magnetic bearing control method and device, magnetic bearing system and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001146917A (en) * | 1999-11-24 | 2001-05-29 | Meidensha Corp | Thrust magnetic bearing using both of electromagnet and permanent magnet |
| US6563244B1 (en) * | 1999-07-28 | 2003-05-13 | Seiko Instruments Inc. | Composite-type electromagnet and 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 |
| CN1648479A (en) * | 2005-01-27 | 2005-08-03 | 北京航空航天大学 | Low power consumption permanent magnet biased axial magnetic bearing |
| CN1667286A (en) * | 2005-04-06 | 2005-09-14 | 北京航空航天大学 | Permanent magnet biased inner rotor radial magnetic bearing |
-
2007
- 2007-07-13 CN CNB2007100251391A patent/CN100458199C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6563244B1 (en) * | 1999-07-28 | 2003-05-13 | Seiko Instruments Inc. | Composite-type electromagnet and radial magnetic bearing |
| JP2001146917A (en) * | 1999-11-24 | 2001-05-29 | Meidensha Corp | Thrust magnetic bearing using both of electromagnet and permanent magnet |
| 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 |
| CN1648479A (en) * | 2005-01-27 | 2005-08-03 | 北京航空航天大学 | Low power consumption permanent magnet biased axial magnetic bearing |
| CN1667286A (en) * | 2005-04-06 | 2005-09-14 | 北京航空航天大学 | Permanent magnet biased inner rotor radial magnetic bearing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101092990A (en) | 2007-12-26 |
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Granted publication date: 20090204 |