CN104158380A - Linear and rotary motion converter for asymmetric rotor - Google Patents
Linear and rotary motion converter for asymmetric rotor Download PDFInfo
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- CN104158380A CN104158380A CN201410453888.4A CN201410453888A CN104158380A CN 104158380 A CN104158380 A CN 104158380A CN 201410453888 A CN201410453888 A CN 201410453888A CN 104158380 A CN104158380 A CN 104158380A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 76
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 50
- 229910001172 neodymium magnet Inorganic materials 0.000 claims abstract description 49
- 229910052742 iron Inorganic materials 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims description 97
- 230000008844 regulatory mechanism Effects 0.000 claims description 23
- 230000011218 segmentation Effects 0.000 claims description 17
- 230000004323 axial length Effects 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000007246 mechanism Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000005389 magnetism Effects 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 9
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention discloses a linear and rotary motion converter for an asymmetric rotor. The linear and rotary motion converter can transmit torque and mechanical energy to achieve mutual conversion of linear motion and rotary motion. The linear and rotary motion converter for the asymmetric rotor comprises a rotary unit, a linear unit and a magnetism-adjusting mechanism, wherein the rotary unit comprises a rotor iron core and permanent magnet poles, and the permanent magnet poles are formed by splicing NdFeB permanent magnets and ferrite permanent magnets and are stuck onto the surface of the rotor iron core by adopting a segmental structure; the linear unit comprises a rotor yoke and permanent magnet poles, and radially-magnetized N-pole permanent magnets and radially-magnetized S-pole permanent magnets are stuck onto the surface of the rotor yoke alternately; the magnetism-adjusting mechanism consists of a magnetism-adjusting iron blocks for guiding magnetism. The rotary unit adopts a novel permanent magnetic rotor structure, so that the torque ripple is effectively reduced, jitter and loss of converter are reduced and the moving stability and the energy conversion efficiency of the converter are improved; the low-cost permanent magnets are used together with the high-cost permanent magnets, so that the manufacturing cost of the converter is reduced and the cost performance is improved.
Description
Technical field
The present invention relates to a kind of asymmetric rotor straight line transducer that rotatablely moves, be applicable to Non-contact speed-changing and drive occasion, belong to power transmission technical field.
Background technology
In fields such as industrial and agricultural production, national defence, Aeronautics and Astronautics, the motion that often rotation motion need to be in line, or rectilinear motion is become and rotatablely moved.According to the difference of application scenario, people develop various converting means or equipment meets above-mentioned requirements, such as rack-and-pinion, chain, steel wire rope, driving-belt, screw mandrel, crank connecting link, slide block mechanism, cam ejection pin mechanism etc.In these converting means, parts moving linearly and rotating moving part are in contact with one another, and have brought the problems such as friction, vibration, noise.
Magneto rack-and-pinion is a kind of contactless transmission device, there is good reliability, stable drive, life-span long, without frictional dissipation, without lubricated, without features such as greasy dirts, be applied to gradually rectilinear motion and rotatablely move the field of conversion mutually, but its torque density that can transmit is less, energy transfer efficiency is also lower, cannot meet the needs of industrial transmission.Along with magnetic field modulation application of principle is in permanent magnet gear topological structure, torque and efficiency that permanent magnet gear transmits have had large increase.Under this background, through the new topological structure of magneto rack-and-pinion conversion, introduce magnetic regulation mechanism, formed straight line rotation converter, this transducer is mainly by magnetic regulation mechanism, to realize the modulation of air-gap field, has improved torque density and through-put power.
Traditional p-m rotor adopts high performance permanent magnetic material, obtains high magnetic energy density, also makes the torque pulsation of rotor increase simultaneously, causes the vibration aggravation of transducer, and it is large that noise becomes, and operational efficiency reduces.By the permanent magnet splicing of the lower permanent magnet of residual flux density and high residual flux density, make the more approaching sine wave of waveform of air gap flux density, meet the requirement of transducer stable operation, reduced the cost of permanent magnet simultaneously.
Summary of the invention
Goal of the invention: for above-mentioned prior art, propose a kind of asymmetric rotor straight line transducer that rotatablely moves, can increase the torque density of traditional magneto gear & rack structure, improve the efficiency of power conversion, simultaneously torque ripple reduction.
Technical scheme: a kind of asymmetric rotor straight line transducer that rotatablely moves, comprise rotary unit, straight line units and magnetic regulation mechanism, described magnetic regulation mechanism is fixedly installed between rotary unit and straight line units; Wherein:
Described rotary unit comprises rotating shaft, rotor core and permanent magnet, and the axis hole of rotor core is passed in rotating shaft, and tightens together with rotor core, and permanent magnet is attached to the surface of rotor core or is embedded in rotor core; Wherein, permanent magnet comprises central angle, internal-and external diameter and axial length all N utmost point permanent magnet and the S utmost point permanent magnet of equal NdFeB material, also comprises central angle, internal-and external diameter and axial length all N utmost point permanent magnet and the S utmost point permanent magnet of equal Ferrite Material;
Every utmost point permanent magnet of rotary unit, along the circumference setting of described rotor core, forms multi-stage annular permanent magnet rotor structure; Each N utmost point permanent magnet of rotary unit is spliced by the N utmost point permanent magnet of a NdFeB material and the N utmost point permanent magnet of two Ferrite Materials, and wherein the N utmost point permanent magnet of two Ferrite Materials is separately positioned on the both sides of the N utmost point permanent magnet of NdFeB material along the circumferencial direction of rotor core; Each S utmost point permanent magnet of rotary unit is spliced by the S utmost point permanent magnet of a NdFeB material and the S utmost point permanent magnet of two Ferrite Materials, and wherein the S utmost point permanent magnet of two Ferrite Materials is separately positioned on the both sides of the S utmost point permanent magnet of NdFeB material along the circumferencial direction of rotor core;
The permanent magnet on described rotor core surface axially adopts segmentation structure setting along rotating shaft; Central angle, internal-and external diameter and axial length that every utmost point permanent magnet in every section of permanent magnet is corresponding all equate, in each utmost point permanent magnet, the central angle ratio of the permanent magnet of Ferrite Material and the permanent magnet of NdFeB material is 1: 15-20; In adjacent two sections of permanent magnets, adjacent two N utmost point permanent magnets are along the same rotor shaft direction equal angular that misplaces successively, and in adjacent two sections of permanent magnets, the permanent magnet of two adjacent S utmost points is along the same rotor shaft direction equal angular that misplaces successively; Wherein, in two neighboring pole permanent magnet, each section of permanent magnet dislocation direction is consistent;
Described straight line units comprises mover yoke, N utmost point permanent magnet and S utmost point permanent magnet, and described N utmost point permanent magnet and S utmost point permanent magnet are interwoven along the straight line units direction of motion, and is pasted on the surface of mover yoke or is embedded in mover yoke.
Further, the N utmost point permanent magnet of described NdFeB material and S utmost point permanent magnet, and the N utmost point permanent magnet of Ferrite Material and S utmost point permanent magnet are watt shape permanent magnet of radial magnetizing.
Further, described magnetic regulation mechanism comprises the adjustable magnetic iron block of magnetic conduction, and the width of described every adjustable magnetic iron block is identical; All adjustable magnetic iron blocks around the curved setting of rotor core, leave interior air gap between the permanent magnet of the end of all adjustable magnetic iron blocks and the corresponding utmost point in rotor core surface near one end of described rotary unit; All adjustable magnetic iron blocks leave the consistent outer air gap of width near one end of straight line units with described mover yoke surface.
Further, between described adjustable magnetic iron block, leave gap, in described gap, fill non-magnetic medium.
The asymmetric rotor straight line transducer that rotatablely moves, is characterized in that: comprise rotary unit, straight line units and magnetic regulation mechanism, described magnetic regulation mechanism is fixedly installed between rotary unit and straight line units; Wherein:
Described rotary unit comprises rotating shaft, rotor core and permanent magnet, and the axis hole of rotor core is passed in rotating shaft, and tightens together with rotor core, and permanent magnet is attached to the surface of rotor core or is embedded in rotor core; Wherein, permanent magnet comprises N utmost point permanent magnet and the S utmost point permanent magnet of NdFeB material, also comprises N utmost point permanent magnet and the S utmost point permanent magnet of Ferrite Material;
Every utmost point permanent magnet of rotary unit, along the circumference setting of described rotor core, forms multi-stage annular permanent magnet rotor structure; Each N utmost point permanent magnet of rotary unit is spliced by the N utmost point permanent magnet of a NdFeB material and the N utmost point permanent magnet of two Ferrite Materials, and wherein the N utmost point permanent magnet of two Ferrite Materials is separately positioned on the both sides of the N utmost point permanent magnet of NdFeB material along the circumferencial direction of rotor core; Each S utmost point permanent magnet of rotary unit is spliced by the S utmost point permanent magnet of a NdFeB material and the S utmost point permanent magnet of two Ferrite Materials, and wherein the S utmost point permanent magnet of two Ferrite Materials is separately positioned on the both sides of the S utmost point permanent magnet of NdFeB material along the circumferencial direction of rotor core;
The permanent magnet on described rotor core surface axially adopts segmentation structure setting along rotating shaft; Central angle, internal-and external diameter and axial length that every utmost point permanent magnet in every section of permanent magnet is corresponding all equate, in each utmost point permanent magnet, the central angle ratio of the permanent magnet of Ferrite Material and the permanent magnet of NdFeB material is 1: 15-20; Two N utmost point permanent magnets adjacent in adjacent two sections of permanent magnets are along axially alignment mutually of rotating shaft, and two S utmost point permanent magnets adjacent in adjacent two sections of permanent magnets are along axially alignment mutually of rotating shaft; Along in the axial segmentation structure of rotating shaft, two adjacent N utmost point permanent magnets are along same bus align center, and central angle size increases progressively successively; Along in the axial segmentation structure of rotating shaft, two adjacent S utmost point permanent magnets are along same bus align center, and the central angle size of two adjacent S utmost point permanent magnets increases progressively successively;
In adjacent two sections of permanent magnets, adjacent two N utmost point permanent magnets are along the same rotor shaft direction equal angular that misplaces successively, and in adjacent two sections of permanent magnets, the permanent magnet of two adjacent S utmost points is along the same rotor shaft direction equal angular that misplaces successively; Wherein, in two neighboring pole permanent magnet, each section of permanent magnet dislocation direction is consistent;
Described straight line units comprises mover yoke, N utmost point permanent magnet and S utmost point permanent magnet, and described N utmost point permanent magnet and S utmost point permanent magnet are interwoven along the straight line units direction of motion, and is pasted on the surface of mover yoke or is embedded in mover yoke.
Further, the N utmost point permanent magnet of described NdFeB material and S utmost point permanent magnet, and the N utmost point permanent magnet of Ferrite Material and S utmost point permanent magnet are watt shape permanent magnet of radial magnetizing.
Further, described magnetic regulation mechanism comprises the adjustable magnetic iron block of magnetic conduction, and the width of described every adjustable magnetic iron block is identical; All adjustable magnetic iron blocks around the curved setting of rotor core, leave interior air gap between the permanent magnet of the end of all adjustable magnetic iron blocks and the corresponding utmost point in rotor core surface near one end of described rotary unit; All adjustable magnetic iron blocks leave the consistent outer air gap of width near one end of straight line units with described mover yoke surface.
Further, between described adjustable magnetic iron block, leave gap, in described gap, fill non-magnetic medium.
Beneficial effect: the present invention proposes a kind of asymmetric rotor straight line transducer that rotatablely moves, adopt the high performance Nd-Fe-B permanent magnet material of low-cost ferrite permanent magnet material substitution part, the central angle ratio of the permanent magnet of Ferrite Material and the permanent magnet of NdFeB material is 1: 15-20, can not produce too much influence to the size of air gap flux density like this, also reduce the manufacturing cost of motor simultaneously.
Each N utmost point permanent magnet of rotary unit is spliced by the N utmost point permanent magnet of a NdFeB material and the N utmost point permanent magnet of two Ferrite Materials, wherein the N utmost point permanent magnet of two Ferrite Materials is separately positioned on the both sides of the N utmost point permanent magnet of NdFeB material along p-m rotor circumferencial direction, and each S utmost point magnet structure of p-m rotor is similar to each N utmost point permanent magnet.Adopt such permanent magnet rotor structure, make every section of corresponding air gap flux density stepped, more approaching sine wave; When the p-m rotor of this structure is applied in three phase alternating current motor, make the more approaching sine of back electromotive force, be convenient to motor and adopt sinusoidal wave control.
In the first structure, because the permanent magnet on rotor core surface axially adopts segmentation structure setting along rotating shaft, in adjacent two sections of permanent magnets, adjacent two N utmost point permanent magnets are along the same rotor shaft direction equal angular that misplaces successively, and in adjacent two sections of permanent magnets, the permanent magnet of two adjacent S utmost points is along the same rotor shaft direction equal angular that misplaces successively; Wherein, in two neighboring pole permanent magnet, each section of permanent magnet dislocation direction is consistent; Such segment fault bit architecture can reach the effect of oblique permanent magnet on the whole, and then torque ripple reduction and cogging torque, thereby avoid straight line to rotatablely move in transducer running, there is large noise and vibration, improve straight line rotatablely move stability and the efficiency of transducer operation.
In the second structure, because the permanent magnet on rotor core surface axially adopts segmentation structure setting along rotating shaft, two N utmost point permanent magnets adjacent in adjacent two sections of permanent magnets are along axially alignment mutually of rotating shaft, and two S utmost point permanent magnets adjacent in adjacent two sections of permanent magnets are along axially alignment mutually of rotating shaft; Along in the axial segmentation structure of rotating shaft, two adjacent N utmost point permanent magnets are along same bus align center, and central angle size increases progressively successively; Along in the axial segmentation structure of rotating shaft, two adjacent S utmost point permanent magnets are along same bus align center, and the central angle size of two adjacent S utmost point permanent magnets increases progressively successively; This kind of structure makes the more approaching sine of air gap flux density, and then torque ripple reduction and cogging torque, thereby avoid straight line to rotatablely move in transducer running, occurs large noise and vibration, improves straight line rotatablely move stability and the efficiency of transducer operation.
Accompanying drawing explanation
Fig. 1 is the rotatablely move structural representation of transducer of asymmetric rotor straight line;
Fig. 2 is the structural representation of the rotary unit of embodiment 1;
Fig. 3 is the structural representation of the rotary unit of embodiment 2.
Embodiment
Below in conjunction with accompanying drawing, the present invention is done further and explained.
Embodiment 1: a kind of asymmetric rotor straight line transducer that rotatablely moves, comprise rotary unit, straight line units and magnetic regulation mechanism, and this magnetic regulation mechanism is fixedly installed between rotary unit and straight line units.Wherein, rotary unit comprises rotating shaft 1, rotor core 2 and permanent magnet; The axis hole of rotor core 2 is passed in rotating shaft 1, and tightens together with rotor core 2, and permanent magnet is attached to the surface of rotor core 2.In the present embodiment, permanent magnet comprises two pairs of utmost point permanent magnets, pole embrace gets 0.6, permanent magnet comprises central angle, internal-and external diameter and axial length all N utmost point permanent magnet 4 and the S utmost point permanent magnet 7 of equal NdFeB material, also comprises central angle, internal-and external diameter and axial length all N utmost point permanent magnet 3 and the S utmost point permanent magnet 6 of equal Ferrite Material.The N utmost point permanent magnet 4 of NdFeB material and S utmost point permanent magnet 7, and the N utmost point permanent magnet 3 of Ferrite Material and S utmost point permanent magnet 6 are watt shape permanent magnet of radial magnetizing.
Every utmost point permanent magnet of rotary unit, along the circumference setting of rotor core 2, forms multi-stage annular permanent magnet rotor structure.Each N utmost point permanent magnet of rotary unit is spliced by the N utmost point permanent magnet 4 of a NdFeB material and the N utmost point permanent magnet 3 of two Ferrite Materials, and wherein the N utmost point permanent magnet 3 of two Ferrite Materials is separately positioned on the both sides of the N utmost point permanent magnet 4 of NdFeB material along the circumferencial direction of rotor core 2.Each S utmost point permanent magnet of rotary unit is spliced by the S utmost point permanent magnet 7 of a NdFeB material and the S utmost point permanent magnet 6 of two Ferrite Materials, and wherein the S utmost point permanent magnet 6 of two Ferrite Materials is separately positioned on the both sides of the S utmost point permanent magnet 7 of NdFeB material along the circumferencial direction of rotor core 2.
The permanent magnet on rotor core 2 surfaces axially adopts segmentation structure setting along rotating shaft; Corresponding central angle, internal-and external diameter and the axial length of every utmost point permanent magnet in every section of permanent magnet all equates, in each utmost point permanent magnet, the permanent magnet central angle sum of two Ferrite Materials and the central angle ratio of the permanent magnet of NdFeB material are 1: 15-20, in the present embodiment, this central angle ratio is 1: 20.In adjacent two sections of permanent magnets, adjacent two N utmost point permanent magnets are along same rotor shaft direction 2.5 degree that misplace successively, and in adjacent two sections of permanent magnets, the permanent magnet of two adjacent S utmost points is along same rotor shaft direction 2.5 degree that misplace successively; Wherein, in two neighboring pole permanent magnet, each section of permanent magnet dislocation direction is consistent.
Straight line units comprises mover yoke 12, N utmost point permanent magnet 10 and S utmost point permanent magnet 11.N utmost point permanent magnet 10 and S utmost point permanent magnet 11 are interwoven along the straight line units direction of motion, and are pasted on the surface of mover yoke 12.
Magnetic regulation mechanism comprises the adjustable magnetic iron block 9 of magnetic conduction, and the width of every adjustable magnetic iron block 9 is identical; All adjustable magnetic iron blocks 9 around the curved setting of rotor core 2, leave air gap between the permanent magnet of the end of all adjustable magnetic iron blocks 9 and the rotor core 2 surperficial corresponding utmost points near one end of rotary unit, and this air gap is called interior air gap; All adjustable magnetic iron blocks leave the consistent air gap of width near one end of straight line units with described mover yoke 12 surfaces, and this air gap is called outer air gap.Between adjustable magnetic iron block 9, leave gap, in this gap, fill non-magnetic medium.
In addition, N utmost point permanent magnet 10 and S utmost point permanent magnet 11 can also be interwoven along the straight line units direction of motion, and are embedded in mover yoke 12.
Embodiment 2: a kind of asymmetric rotor straight line transducer that rotatablely moves, comprise rotary unit, straight line units and magnetic regulation mechanism, and magnetic regulation mechanism is fixedly installed between rotary unit and straight line units.Wherein, rotary unit comprises rotating shaft 1, rotor core 2 and permanent magnet, and the axis hole of rotor core 2 is passed in rotating shaft 1, and tightens together with rotor core 2, and permanent magnet is attached to the surface of rotor core 2.In the present embodiment, permanent magnet comprises two pairs of utmost point permanent magnets, and pole embrace gets 0.6, and permanent magnet comprises N utmost point permanent magnet 4 and the S utmost point permanent magnet 7 of NdFeB material, also comprises N utmost point permanent magnet 3 and the S utmost point permanent magnet 6 of Ferrite Material.The N utmost point permanent magnet 4 of NdFeB material and S utmost point permanent magnet 7, and the N utmost point permanent magnet 3 of Ferrite Material and S utmost point permanent magnet 6 are watt shape permanent magnet of radial magnetizing.
Every utmost point permanent magnet of rotary unit, along the circumference setting of rotor core 2, forms multi-stage annular permanent magnet rotor structure.Each N utmost point permanent magnet of rotary unit is spliced by the N utmost point permanent magnet 4 of a NdFeB material and the N utmost point permanent magnet 3 of two Ferrite Materials, and wherein the N utmost point permanent magnet 3 of two Ferrite Materials is separately positioned on the both sides of the N utmost point permanent magnet 4 of NdFeB material along the circumferencial direction of rotor core 2.Each S utmost point permanent magnet of rotary unit is spliced by the S utmost point permanent magnet 7 of a NdFeB material and the S utmost point permanent magnet 6 of two Ferrite Materials, and wherein the S utmost point permanent magnet 6 of two Ferrite Materials is separately positioned on the both sides of the S utmost point permanent magnet 7 of NdFeB material along the circumferencial direction of rotor core 2.
The permanent magnet on rotor core 2 surfaces axially adopts segmentation structure setting along rotating shaft.Corresponding central angle, internal-and external diameter and the axial length of every utmost point permanent magnet in every section of permanent magnet all equates, the central angle sum of the permanent magnet of two Ferrite Materials in each utmost point permanent magnet is 1 with the central angle ratio of the permanent magnet of NdFeB material: 15-20, in the present embodiment, this central angle ratio is 1: 20.Two N utmost point permanent magnets adjacent in adjacent two sections of permanent magnets are along axially alignment mutually of rotating shaft, and two S utmost point permanent magnets adjacent in adjacent two sections of permanent magnets are along axially alignment mutually of rotating shaft; Along in the axial segmentation structure of rotating shaft, two adjacent N utmost point permanent magnets are along same bus align center, and central angle size increases progressively successively; Along in the axial segmentation structure of rotating shaft, two adjacent S utmost point permanent magnets are along same bus align center, and the central angle size of two adjacent S utmost point permanent magnets increases progressively successively.
In adjacent two sections of permanent magnets, adjacent two N utmost point permanent magnets are along the same rotor shaft direction equal angular that misplaces successively, and in adjacent two sections of permanent magnets, the permanent magnet of two adjacent S utmost points is along the same rotor shaft direction equal angular that misplaces successively; Wherein, in two neighboring pole permanent magnet, each section of permanent magnet dislocation direction is consistent.
Straight line units comprises mover yoke 12, N utmost point permanent magnet 10 and S utmost point permanent magnet 11.N utmost point permanent magnet 10 and S utmost point permanent magnet 11 are interwoven along the straight line units direction of motion, and are pasted on the surface of mover yoke 12.
Magnetic regulation mechanism comprises the adjustable magnetic iron block 9 of magnetic conduction, and the width of every adjustable magnetic iron block 9 is identical; All adjustable magnetic iron blocks 9 around the curved setting of rotor core 2, leave air gap between the permanent magnet of the end of all adjustable magnetic iron blocks 9 and the rotor core 2 surperficial corresponding utmost points near one end of rotary unit, and this air gap is called interior air gap; All adjustable magnetic iron blocks leave the consistent air gap of width near one end of straight line units with described mover yoke 12 surfaces, and this air gap is called outer air gap.Between adjustable magnetic iron block 9, leave gap, in this gap, fill non-magnetic medium.
In addition, N utmost point permanent magnet 10 and S utmost point permanent magnet 11 can also be interwoven along the straight line units direction of motion, and are embedded in mover yoke 12.
A kind of asymmetric rotor straight line that the present invention proposes transducer that rotatablely moves, by introducing the magnetic regulation mechanism of magnetic conduction, modulates the air gap flux density of inside and outside air gap, changes the space harmonics number of times of inside and outside air gap, realizes the transmission of energy and torque.Based on magnetic field modulation principle, the transducer of this structure has been realized the modulation of air-gap field, has improved the torque density of traditional magneto gear & rack structure, has also improved the efficiency of power conversion simultaneously.
The rotary unit of transducer adopts the hybrid permanent-magnet of segmented, by the high performance Nd-Fe-B permanent magnet material of low-cost ferrite permanent-magnet materials Substitute For Partial, reduced the manufacturing cost of transducer, the volume of the shared permanent magnet of ferrite permanent magnet of low performance is very little, the size of air gap flux density is not produced to too much influence yet, make air gap flux density stepped, more approaching sine wave simultaneously; Meanwhile, the permanent magnet of high-performance Ne-Fe-B permanent-magnet material adopts the structure of segmentation dislocation, torque ripple reduction and cogging torque, thus avoid occurring large noise and vibration having improved stability and the efficiency of transducer operation in transducer running.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. the asymmetric rotor straight line transducer that rotatablely moves, is characterized in that: comprise rotary unit, straight line units and magnetic regulation mechanism, described magnetic regulation mechanism is fixedly installed between rotary unit and straight line units; Wherein:
Described rotary unit comprises rotating shaft (1), rotor core (2) and permanent magnet, rotating shaft (1) is through the axis hole of rotor core (2), and tighten together with rotor core (2), permanent magnet is attached to the surface of rotor core (2) or is embedded in rotor core (2); Wherein, permanent magnet comprises central angle, internal-and external diameter and axial length all N utmost point permanent magnet (4) and the S utmost point permanent magnet (7) of equal NdFeB material, also comprises central angle, internal-and external diameter and axial length all N utmost point permanent magnet (3) and the S utmost point permanent magnet (6) of equal Ferrite Material;
Every utmost point permanent magnet of rotary unit, along the circumference setting of described rotor core (2), forms multi-stage annular permanent magnet rotor structure; Each N utmost point permanent magnet of rotary unit is spliced by the N utmost point permanent magnet (4) of a NdFeB material and the N utmost point permanent magnet (3) of two Ferrite Materials, and wherein the N utmost point permanent magnet (3) of two Ferrite Materials is separately positioned on the both sides of the N utmost point permanent magnet (4) of NdFeB material along the circumferencial direction of rotor core (2); Each S utmost point permanent magnet of rotary unit is spliced by the S utmost point permanent magnet (7) of a NdFeB material and the S utmost point permanent magnet (6) of two Ferrite Materials, and wherein the S utmost point permanent magnet (6) of two Ferrite Materials is separately positioned on the both sides of the S utmost point permanent magnet (7) of NdFeB material along the circumferencial direction of rotor core (2);
The permanent magnet on described rotor core (2) surface axially adopts segmentation structure setting along rotating shaft; Central angle, internal-and external diameter and axial length that every utmost point permanent magnet in every section of permanent magnet is corresponding all equate, in each utmost point permanent magnet, the central angle ratio of the permanent magnet of Ferrite Material and the permanent magnet of NdFeB material is 1: 15-20; In adjacent two sections of permanent magnets, adjacent two N utmost point permanent magnets are along the same rotor shaft direction equal angular that misplaces successively, and in adjacent two sections of permanent magnets, the permanent magnet of two adjacent S utmost points is along the same rotor shaft direction equal angular that misplaces successively; Wherein, in two neighboring pole permanent magnet, each section of permanent magnet dislocation direction is consistent;
Described straight line units comprises mover yoke (12), N utmost point permanent magnet (10) and S utmost point permanent magnet (11), described N utmost point permanent magnet (10) and S utmost point permanent magnet (11) are interwoven along the straight line units direction of motion, and are pasted on the surface of mover yoke (12) or are embedded in mover yoke (12).
2. a kind of asymmetric rotor straight line according to claim 1 transducer that rotatablely moves, it is characterized in that: the N utmost point permanent magnet (4) of described NdFeB material and S utmost point permanent magnet (7), and the N utmost point permanent magnet (3) of Ferrite Material and S utmost point permanent magnet (6) are watt shape permanent magnet of radial magnetizing.
3. a kind of asymmetric rotor straight line according to claim 1 transducer that rotatablely moves, is characterized in that: described magnetic regulation mechanism comprises the adjustable magnetic iron block (9) of magnetic conduction, and the width of described every adjustable magnetic iron block (9) is identical; Interior air gap, around the curved setting of rotor core (2), is left between the end of all adjustable magnetic iron blocks (9) and the permanent magnet on rotor core (2) surface in one end of the close described rotary unit of all adjustable magnetic iron blocks (9); All adjustable magnetic iron blocks leave the consistent outer air gap of width near one end of straight line units with described mover yoke (12) surface.
4. a kind of asymmetric rotor straight line according to claim 4 transducer that rotatablely moves, is characterized in that: between described adjustable magnetic iron block (9), leave gap, fill non-magnetic medium in described gap.
5. the asymmetric rotor straight line transducer that rotatablely moves, is characterized in that: comprise rotary unit, straight line units and magnetic regulation mechanism, described magnetic regulation mechanism is fixedly installed between rotary unit and straight line units; Wherein:
Described rotary unit comprises rotating shaft (1), rotor core (2) and permanent magnet, rotating shaft (1) is through the axis hole of rotor core (2), and tighten together with rotor core (2), permanent magnet is attached to the surface of rotor core (2) or is embedded in rotor core (2); Wherein, permanent magnet comprises N utmost point permanent magnet (4) and the S utmost point permanent magnet (7) of NdFeB material, also comprises N utmost point permanent magnet (3) and the S utmost point permanent magnet (6) of Ferrite Material;
Every utmost point permanent magnet of rotary unit, along the circumference setting of described rotor core (2), forms multi-stage annular permanent magnet rotor structure; Each N utmost point permanent magnet of rotary unit is spliced by the N utmost point permanent magnet (4) of a NdFeB material and the N utmost point permanent magnet (3) of two Ferrite Materials, and wherein the N utmost point permanent magnet (3) of two Ferrite Materials is separately positioned on the both sides of the N utmost point permanent magnet (4) of NdFeB material along the circumferencial direction of rotor core (2); Each S utmost point permanent magnet of rotary unit is spliced by the S utmost point permanent magnet (7) of a NdFeB material and the S utmost point permanent magnet (6) of two Ferrite Materials, and wherein the S utmost point permanent magnet (6) of two Ferrite Materials is separately positioned on the both sides of the S utmost point permanent magnet (7) of NdFeB material along the circumferencial direction of rotor core (2);
The permanent magnet on described rotor core (2) surface axially adopts segmentation structure setting along rotating shaft; Central angle, internal-and external diameter and axial length that every utmost point permanent magnet in every section of permanent magnet is corresponding all equate, in each utmost point permanent magnet, the central angle ratio of the permanent magnet of Ferrite Material and the permanent magnet of NdFeB material is 1: 15-20; Two N utmost point permanent magnets adjacent in adjacent two sections of permanent magnets are along axially alignment mutually of rotating shaft, and two S utmost point permanent magnets adjacent in adjacent two sections of permanent magnets are along axially alignment mutually of rotating shaft; Along in the axial segmentation structure of rotating shaft, two adjacent N utmost point permanent magnets are along same bus align center, and central angle size increases progressively successively; Along in the axial segmentation structure of rotating shaft, two adjacent S utmost point permanent magnets are along same bus align center, and the central angle size of two adjacent S utmost point permanent magnets increases progressively successively;
In adjacent two sections of permanent magnets, adjacent two N utmost point permanent magnets are along the same rotor shaft direction equal angular that misplaces successively, and in adjacent two sections of permanent magnets, the permanent magnet of two adjacent S utmost points is along the same rotor shaft direction equal angular that misplaces successively; Wherein, in two neighboring pole permanent magnet, each section of permanent magnet dislocation direction is consistent;
Described straight line units comprises mover yoke (12), N utmost point permanent magnet (10) and S utmost point permanent magnet (11), described N utmost point permanent magnet (10) and S utmost point permanent magnet (11) are interwoven along the straight line units direction of motion, and are pasted on the surface of mover yoke (12) or are embedded in mover yoke (12).
6. a kind of asymmetric rotor straight line according to claim 1 transducer that rotatablely moves, it is characterized in that: the N utmost point permanent magnet (4) of described NdFeB material and S utmost point permanent magnet (7), and the N utmost point permanent magnet (3) of Ferrite Material and S utmost point permanent magnet (6) are watt shape permanent magnet of radial magnetizing.
7. a kind of asymmetric rotor straight line according to claim 1 transducer that rotatablely moves, is characterized in that: described magnetic regulation mechanism comprises the adjustable magnetic iron block (9) of magnetic conduction, and the width of described every adjustable magnetic iron block (9) is identical; Interior air gap, around the curved setting of rotor core (2), is left between the end of all adjustable magnetic iron blocks (9) and the permanent magnet on rotor core (2) surface in one end of the close described rotary unit of all adjustable magnetic iron blocks (9); All adjustable magnetic iron blocks leave the consistent outer air gap of width near one end of straight line units with described mover yoke (12) surface.
8. a kind of asymmetric rotor straight line according to claim 4 transducer that rotatablely moves, is characterized in that: between described adjustable magnetic iron block (9), leave gap, fill non-magnetic medium in described gap.
9. the asymmetric rotor straight line transducer that rotatablely moves, is characterized in that: comprise rotary unit, straight line units and magnetic regulation mechanism, described magnetic regulation mechanism is fixedly installed between rotary unit and straight line units; Wherein:
Described rotary unit comprises rotating shaft (1), rotor core (2) and permanent magnet, rotating shaft (1) is through the axis hole of rotor core (2), and tighten together with rotor core (2), permanent magnet is attached to the surface of rotor core (2) or is embedded in rotor core (2); Wherein, permanent magnet comprises N utmost point permanent magnet (4) and the S utmost point permanent magnet (7) of NdFeB material, also comprises N utmost point permanent magnet (3) and the S utmost point permanent magnet (6) of Ferrite Material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410453888.4A CN104158380B (en) | 2014-09-05 | 2014-09-05 | Linear and rotary motion converter for asymmetric rotor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410453888.4A CN104158380B (en) | 2014-09-05 | 2014-09-05 | Linear and rotary motion converter for asymmetric rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104158380A true CN104158380A (en) | 2014-11-19 |
| CN104158380B CN104158380B (en) | 2017-04-19 |
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| CN201410453888.4A Expired - Fee Related CN104158380B (en) | 2014-09-05 | 2014-09-05 | Linear and rotary motion converter for asymmetric rotor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356699A (en) * | 2015-11-09 | 2016-02-24 | 江苏大学 | Dual-rotor flux-switching motor for vehicle |
| CN105634193A (en) * | 2016-02-29 | 2016-06-01 | 东南大学 | Magnetic gear based rotating-linear variable speed motor |
| CN109586433A (en) * | 2018-11-27 | 2019-04-05 | 东南大学 | Modularization rotational alignment flux switch permanent magnet motor |
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| JPS59217057A (en) * | 1983-05-19 | 1984-12-07 | Yuji Kanzaki | Power transmission apparatus utilizing permanent magnet |
| CN102638119A (en) * | 2012-04-24 | 2012-08-15 | 河北科技大学 | Permanent magnet motor rotor with small output torque ripple |
| CN202424345U (en) * | 2011-12-31 | 2012-09-05 | 北京明诚技术开发有限公司 | Permanent magnet motor with mixed magnetic poles |
| CN103475185A (en) * | 2013-09-30 | 2013-12-25 | 东南大学 | Converter for linear motion and rotary motion |
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2014
- 2014-09-05 CN CN201410453888.4A patent/CN104158380B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59217057A (en) * | 1983-05-19 | 1984-12-07 | Yuji Kanzaki | Power transmission apparatus utilizing permanent magnet |
| CN202424345U (en) * | 2011-12-31 | 2012-09-05 | 北京明诚技术开发有限公司 | Permanent magnet motor with mixed magnetic poles |
| CN102638119A (en) * | 2012-04-24 | 2012-08-15 | 河北科技大学 | Permanent magnet motor rotor with small output torque ripple |
| CN103475185A (en) * | 2013-09-30 | 2013-12-25 | 东南大学 | Converter for linear motion and rotary motion |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356699A (en) * | 2015-11-09 | 2016-02-24 | 江苏大学 | Dual-rotor flux-switching motor for vehicle |
| CN105356699B (en) * | 2015-11-09 | 2018-04-24 | 江苏大学 | A kind of automobile-used birotor flux switch motor |
| CN105634193A (en) * | 2016-02-29 | 2016-06-01 | 东南大学 | Magnetic gear based rotating-linear variable speed motor |
| CN109586433A (en) * | 2018-11-27 | 2019-04-05 | 东南大学 | Modularization rotational alignment flux switch permanent magnet motor |
| CN109586433B (en) * | 2018-11-27 | 2021-02-09 | 东南大学 | Modularized rotary linear flux switching permanent magnet motor |
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| CN104158380B (en) | 2017-04-19 |
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