CN209709911U - The unidirectional proportion electro-magnet of symmetrical magneto based on air-gap compensation - Google Patents
The unidirectional proportion electro-magnet of symmetrical magneto based on air-gap compensation Download PDFInfo
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- CN209709911U CN209709911U CN201920127678.4U CN201920127678U CN209709911U CN 209709911 U CN209709911 U CN 209709911U CN 201920127678 U CN201920127678 U CN 201920127678U CN 209709911 U CN209709911 U CN 209709911U
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- 229910052742 iron Inorganic materials 0.000 claims description 6
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Abstract
The unidirectional proportion electro-magnet of symmetrical magneto based on air-gap compensation, stator front and back side are respectively provided with drive end bearing bracket, rear end cap, and yoke ring even circumferential is distributed N number of double wedge, and double wedge forms yoke magnetic pole, and the magnetic pole of the stator shape on each yoke is identical and axially aligns；Control coil is placed between second yoke and third yoke, forms control magnetic flux；Equipped with first every magnetic patch and the first magnet steel between first yoke, the second yoke；Equipped with second every magnetic patch and the second magnet steel between third yoke and the 4th yoke；First armature and the second armature have been uniformly distributed circumferentially armature magnetic pole, and armature magnetic pole face includes the circumferential flank of tooth and side elevation, and the flank of tooth and yoke magnetic pole form radial air gap；Side elevation is located in one end of the flank of tooth, forms axial air-gap with the side of yoke magnetic pole；Position of the side elevation of the armature magnetic pole of first armature and the second armature on the flank of tooth is reversed, and axial air-gap is made to be symmetrically distributed in the two sides of yoke magnetic pole.
Description
Technical field
The utility model relates to a kind of proportion electro-magnets.
Background technique
Rotary valve is a kind of relative position for changing spool, valve pocket using rotary motion, changes the flow path inside rotary valve, most
The reversal valve of flow path opening and closing or commutation is realized eventually.Rotary valve can be by manual, machine driving or directly by motor, motor and rotation
Solenoid actuated, to realize accurate servo/ratio control.Compared with slide valve or cone valve, rotary valve has high reliablity, structure letter
The advantages that list, working frequency are high, oil resistant liquid pollution capacity is strong can be widely applied to high-speed switch, high speed exciting, high speed and commutate
In hydraulic system, especially when the throttling slot number of spool valve pocket is more, single-stage rotary valve can obtain also bigger than multiple valve spools
Metered flow.However in existing electro-hydraulic servo/ratio control system, it is extensive that the application of rotary valve but can not show a candle to slide valve.It canvasses
Its reason, first is that the throttling channel of rotary valve/window processing is complex, second is that being used to drive the rotating electromagnet of rotary valve to obtain ratio control
Much more difficult than direct action type proportional electromagnet of characteristic processed, the latter is by using a magnetism-isolating loop structure, and magnetic circuit is in magnetism-isolating loop when excitation
Punishment is two-way axially and radially, the required horizontal throw-thrust performance of ratio control can be obtained after synthesis, although magnetic conduction
The welding of set is relatively complicated, but is not what big problem for high-volume automated production, and rotating electromagnet is often
Design is specifically optimized to stator tooth and armature odontoid could obtain relatively flat torque-corner characteristic, this is with regard to big
Its practical application is limited greatly.
For the promotion and application rotary valve in electro-hydraulic servo/ratio system, Magnetic circuit topologies knot of the people in rotating electromagnet
Numerous studies have been done in structure and torque angle displacement characteristic optimization.Widely applied torque is obtained in Nozzle flapper valve and jet pipe servo valve
Motor can also obtain the position control characteristic of ratio by the rational design to elastic element, but since its magnetic circuit is based on axis
To air gap, it is difficult to obtain biggish operating angle.AM General detect company Montagu propose based on radial working gas gap
Modified torque-motor expand its Work-corner range further, and itself have positive ELECTROMAGNETIC STIFFNESS, Ke Yi
Proportional positions control characteristic is obtained in the case where not additional elastic element.In order to obtain flat torque angle displacement characteristic curve, Hitachi is public
Designed moving-magnetic type torque-motor armature upper magnetic steel shape has been made special designing by the Fumio of department, and pole-face has radially been cut
Groove and non-magnet material is inserted, adjoint torque pulsation when compensating armature rotation with this.Japanese denso company into rattan
The magneto torque-motor of two youths design, two magnetic poles being made of discrete magnet steel are asymmetric in a manner of differing half of magnetic pole angle
It is arranged in the outside of shaft, the torque pulsation as caused by polygon magnetic pole periphery is compensated with this, to obtain stable power
Square-corner characteristic.The electrical excitation torque-motor of the developments such as Zhejiang University Zhang Guangqiong, to the shape of magnetic pole of the stator and armature pole-face into
It has gone special designing, has changed the torque angle displacement characteristic of motor by the magnetic flux degree of saturation at control stator magnet tip of pole shoe.Cui Jian etc.
People proposes a kind of moving-magnetic type rotational rate electromagnet based on radial working gas gap, based on differential magnetic circuit and has positive electromagnetism rigid
Degree, but structure is complex, is unfavorable for industrial applications and large-scale serial production.
Summary of the invention
In order to overcome existing rotating electromagnet to obtain horizontal moment-, corner characteristic is difficult, structure is complicated and is unfavorable for work
Industryization is applied and the shortcomings that large-scale serial production, the utility model provide it is a kind of it is based on hybrid air gap, with horizontal force
Square-corner characteristic, structure simply unidirectional proportion electro-magnet of symmetrical magneto based on air-gap compensation.
The basic principle of the utility model is as follows: common working gas gap has radial air gap and axis in electromechanical converter
To two kinds of air gap, radial air gap can have biggish Work-corner, but as the increase of error angle (is determined armature and is gradually aligned), defeated
Torque can reduce out, i.e., its torque angle displacement characteristic slope of a curve is negative；And axial air-gap working range is relatively narrow, but output torque with
The increase of error angle and increase, i.e., its torque angle displacement characteristic slope of a curve is positive.Therefore, the working gas gap of the utility model is divided into two
Part, groundwork air gap are radial air gap, increase an axial air-gap on the basis of radial air gap.Radial air gap and axial direction
The torque phase inter-modulation that air gap generates, is obtained with close to horizontal torque angle displacement characteristic curve, outside by reasonable parameter optimization
Add the position control characteristic that ratio is obtained with after spring balancing mechanism.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
The unidirectional proportion electro-magnet of symmetrical magneto based on air-gap compensation, as depicted in figs. 1 and 2, side difference before and after stator
Equipped with drive end bearing bracket 2, rear end cap 12, stator is provided with the first armature 3 and the second armature 13, and the first armature 3 and the second armature 13 are same
It is mounted on output shaft 1 to axis.The first yoke 4 that the stator is arranged by axial order, the second yoke 7, third yoke 8 and
Four yokes 10 composition, the first yoke 4, the second yoke 7, third yoke 8 and 10 ring even circumferential of the 4th yoke are distributed N number of double wedge,
Double wedge forms yoke magnetic pole 15,15 shape of yoke magnetic pole on the first yoke 4, the second yoke 7, third yoke 8 and the 4th yoke 10
Shape is identical and axially aligns, and is conducive to increase output torque.Second yoke 7 and third yoke 8 are provided with symmetrically along interface respectively
Groove, split formed annular groove, annular groove place control coil 14, formed control magnetic flux.First yoke 4, the second yoke 7 it
Between equipped with first every magnetic patch 5；Equipped with second every magnetic patch 9 between third yoke 8 and the 4th yoke 10；First yoke 4 and the second yoke
It is placed with the first magnet steel 6 between iron 7, is placed with the second magnet steel 11 among third yoke 8 and the 4th yoke 10, is used to form biasing
Magnetic flux.
First armature 3 and the second armature 13 coaxially splice, and the first armature 3 and the second armature 13 are uniformly distributed circumferentially
There is N number of armature tooth, armature tooth forms armature magnetic pole, and armature magnetic pole face includes the circumferential arc-shaped flank of tooth 31 and side elevation
32, the end composition radial air gap of the flank of tooth 31 and yoke magnetic pole 15.Side elevation 32 is located in one end of the flank of tooth 31, side elevation 32
Axial air-gap is formed with the side of yoke magnetic pole 15.The side elevation 32 of the armature magnetic pole of first armature 3 is located at one end of the flank of tooth 31,
The side elevation 32 of the armature magnetic pole of second armature 13 is located at the other end of the flank of tooth 31, and axial air-gap is made to be symmetrically distributed in yoke magnetic pole
15 two sides.To enable electromagnet to work normally, need to change the mode of armature axial direction side set, the i.e. rank of the second armature 13
Iron teeth needs one angle of double wedge of advanced yoke along clockwise direction, and the armature tooth of the first armature 3 is then fallen along clockwise direction
The angle of the double wedge same size of yoke afterwards.
Preferably, armature uses drag cup structure, reduces rotary inertia, is conducive to increase corresponding speed.The drive end bearing bracket 2
With rear end cap 12, output shaft 1 and first it is made every magnetic patch 9 of non-magnetic metal material every magnetic patch 5 and second, and the first rank
Iron 3, the second armature 13, the first yoke 4, the second yoke 7, third yoke 8 and the 4th high permeability of yoke 10 soft magnetic metal
Material is made.
All armature assemblies, the yoke axial line all having the same of the utility model, and, this reality coaxial with output shaft 1
Refer to the axial line of output shaft 1 with the novel axial direction.
Preferably, the first yoke 4, the second yoke 7, third yoke 8 and 10 ring even circumferential of the 4th yoke are distributed 8 yokes
Magnetic pole 15, each yoke magnetic pole 15 are separated by 45 °；First armature 3 and the second armature 13 have been uniformly distributed circumferentially 8 armature teeth.
Preferably, 1/4 angular pitch of double wedge of the armature tooth of the second armature 13 advanced yoke along clockwise direction, first
The armature tooth of armature 3 then falls behind 1/4 angular pitch of double wedge of yoke along clockwise direction.
The beneficial effects of the utility model are mainly manifested in:
1. obtaining horizontal torque-corner characteristic using hybrid working gas gap.The working gas gap of the utility model is divided into
Two parts, groundwork air gap are radial air gap, increase an axial air-gap on the basis of radial air gap.Radial air gap and axis
The torque phase inter-modulation generated to air gap, is obtained with by reasonable parameter optimization close to horizontal torque angle displacement characteristic curve,
The position control characteristic of ratio is obtained with after additional spring balancing mechanism.
2. fast response time, output torque are big.It is columnar structured compared to other rotary-type ratio electromagnet armature,
Its armature of scheme provided by the utility model is drag cup structure, and rotary inertia is small, help to obtain higher dynamic response speed
Degree.It is designed using more field structures, is conducive to promote output torque.
3. using axial magnetic circuit symmetrical structure.Compared to asymmetric shaft to magnetic structure, no matter clockwise or counterclockwise
Rotation, torque angle displacement characteristic keep symmetrical, ensure that the operating accuracy of proportion electro-magnet.
4. using unicoil excitation, control is simple.Compared to two-phase excitation structure, drive is can be effectively reduced in unicoil excitation
The complexity of dynamic circuit, controls more simple.
5. structure is simple, at low cost.Compared to other rotary-type ratio electromagnets, scheme zero provided by the utility model
Number of components is few, and processing, assembly are relatively easy to, and manufacturing cost is low, is conducive to industrialized practical application and extensive batch
Amount production.
Detailed description of the invention
Fig. 1 is the schematic diagram of the utility model；
Fig. 2 is the assembling schematic diagram of the utility model；
Fig. 3 is the schematic diagram of the output shaft of the utility model；
Fig. 4 is the drive end bearing bracket structural schematic diagram of the utility model；
Fig. 5 is the structural schematic diagram of first armature of the utility model；
Fig. 6 is the structural schematic diagram of first yoke of the utility model；
Fig. 7 is the utility model every magnetic patch structural schematic diagram；
Fig. 8 is the magnetic steel structure schematic diagram of the utility model；
Fig. 9 is the structural schematic diagram of second yoke of the utility model
Figure 10 is the rear end cover structure schematic diagram of the utility model；
Figure 11 is the structural schematic diagram of second armature of the utility model；
Figure 12 is radial air gap, axial air-gap and the torque angle displacement characteristic curve synoptic diagram for mixing air gap；
Figure 13 is the operation principle schematic diagram of the utility model；
Figure 14 is the operation principle schematic diagram of the utility model, and control coil 14 is passed through the electric current in a direction；
Figure 15 is the operation principle schematic diagram of the utility model, and control coil 14 is passed through the electric current in another direction.
Specific embodiment
The utility model is described further with reference to the accompanying drawing.
Referring to Fig.1~Figure 11, the unidirectional proportion electro-magnet of symmetrical magneto based on air-gap compensation, stator front and back side fill respectively
There are drive end bearing bracket 2, rear end cap 12, yoke is provided with the first armature 3 and the second armature 13, and the first armature 3 and the second armature 13 are coaxial
Ground is mounted in output shaft 1.
The first yoke 4, the second yoke 7, third yoke 8 and the 4th yoke 10 that yoke is arranged by axial order form, often
A yoke ring even circumferential is distributed 8 double wedges, which forms yoke magnetic pole 15, and each yoke magnetic pole 15 is separated by 45 °, the first yoke
Iron 4, the second yoke 7, third yoke 8 is identical with 15 shape of yoke magnetic pole on the 4th yoke 10 and axially aligns, and is conducive to increase
Add output torque.Yoke 7 and yoke 8 are provided with symmetrical groove along interface respectively, and split forms annular groove, and annular groove places control
Coil 14 processed forms control magnetic flux.Equipped with first every magnetic patch 5 between first yoke 4, the second yoke 7, first every in magnetic patch 5
Circle the first magnet steel 6 of setting；It is arranged every magnetic patch 9, second every 9 inner ring of magnetic patch between third yoke 8 and the 4th yoke 10 equipped with second
Second magnet steel 11, is used to form biasing magnetic flux.
First armature 3 and the second armature 13 coaxially splice, the first armature 3 and the radially even distribution of the second armature 13
There are 8 armature teeth, armature tooth forms armature magnetic pole, and the end face of each armature magnetic pole includes for the arc-shaped flank of tooth 31 and side elevation
32, the end face composition radial air gap of the flank of tooth 31 and yoke magnetic pole 15；Side elevation 32 is located at one end of the flank of tooth 31, side elevation 32 with
The side of yoke magnetic pole 15 forms axial air-gap.The side elevation 32 of the armature magnetic pole of first armature 3 is located at one end of the flank of tooth 31, the
The side elevation 32 of the armature magnetic pole of two armature 13 is located at the other end of the flank of tooth 31, and axial air-gap is made to be symmetrically distributed in yoke magnetic pole 15
Two sides.To enable electromagnet to work normally, need to change the mode of armature axial direction side set, the i.e. armature of the second armature 13
Tooth needs 1/4 angular pitch of double wedge of advanced yoke along clockwise direction, and the armature tooth of the first armature 3 is then fallen along clockwise direction
1/4 angular pitch of the double wedge of yoke afterwards.Armature uses drag cup structure, reduces rotary inertia, is conducive to increase corresponding speed.Institute
It states drive end bearing bracket 2 and rear end cap 12, output shaft 1 and is made every magnetic patch 5 and every magnetic patch 9 of non-magnetic metal material, and first
Armature 3, the second armature 13, the first yoke 4, the second yoke 7, third yoke 8 and the 4th yoke 10 are soft with the metal of high permeability
Magnetic material is made.
As shown in figure 13, when 14 no power of control coil, air-gap flux is only dependent upon the biasing magnetic flux of magnet steel, at this time
Determine that armature position relationship is identical, i.e., yoke magnetic pole 15 is identical with respective armature tooth offset angular under each magnetic pole of electromagnet
Arc surface, the radial air gap in four magnetic poles is identical with axial air-gap size, and the first armature 3 and the second armature 13 are in middle position
Initial position.
When control coil 14 is passed through forward current as shown in figure 14 simultaneously, the first magnetic pole g1 and the 4th magnetic pole g4 are not
It is influenced by control coil magnetization magnetic field, air-gap flux remains unchanged.Control coil encourages under the working gas gap of second magnetic pole g2
Magnetic magnetic field is identical as the bias magnetic field direction of magnet steel and is overlapped mutually, and air-gap flux increases；Under the working gas gap of third magnetic pole g3
The excitation field of control coil and the bias magnetic field of magnet steel are contrary and cancel out each other, and air-gap flux reduces, third armature g3
It is acted on by electromagnetic torque and rotating counterclockwise, the torque phase inter-modulation that radial air gap and axial air-gap respectively generate at this time, so that
Electromagnet obtains the torque angle displacement characteristic of almost horizontal, and the size of output torque can pass through the big minor adjustment of control electric current, line of engagement
The position control effect proportional to electric current can be obtained when property spring use.
When control coil 14 is passed through reverse current as shown in figure 15, the first magnetic pole g1 and the 4th magnetic pole g4 are uncontrolled
The influence in coil magnetization magnetic field, air-gap flux remain unchanged.The excitation field of control coil under the working gas gap of third magnetic pole g3
Identical as the bias magnetic field direction of magnet steel and be overlapped mutually, air-gap flux increases；Control line under the working gas gap of second magnetic pole g2
The excitation field of circle and the bias magnetic field of magnet steel are contrary and cancel out each other, and air-gap flux reduces, and the second armature 13 is by electricity
The effect of magnetic torque rotates clockwise, the torque phase inter-modulation that radial air gap and axial air-gap respectively generate at this time, so that electromagnetism
Iron obtains the torque angle displacement characteristic of almost horizontal, and the size of output torque can cooperate linear bullet by the big minor adjustment of control electric current
The position control effect proportional to electric current can be obtained when spring use.
Content described in this specification embodiment is only an enumeration of the implementation forms of the utility model concept, this is practical new
The protection scope of type should not be construed as being limited to the specific forms stated in the embodiments, the protection scope of the utility model also and
In those skilled in the art according to the utility model design it is conceivable that equivalent technologies mean.
Claims (4)
1. the unidirectional proportion electro-magnet of symmetrical magneto based on air-gap compensation, it is characterised in that: before side is respectively provided with before and after stator
End cap (2), rear end cap (12), stator are provided with the first armature (3) and the second armature (13), the first armature (3) and the second armature
(13) coaxially on output shaft (1)；The first yoke (4) that the stator is arranged by axial order, the second yoke (7),
Third yoke (8) and the 4th yoke (10) composition, the first yoke (4), the second yoke (7), third yoke (8) and the 4th yoke
(10) ring even circumferential is distributed N number of double wedge, and double wedge forms yoke magnetic pole (15), the first yoke (4), the second yoke (7), third yoke
Iron (8) is identical with yoke magnetic pole (15) shape on the 4th yoke (10) and axially aligns；Second yoke (7) and third yoke
(8) it is provided with symmetrical groove along interface respectively, split forms annular groove, and annular groove places control coil (14), forms control
Magnetic flux；Equipped with first every magnetic patch (5) between first yoke (4), the second yoke (7)；Third yoke (8) and the 4th yoke (10) it
Between equipped with second every magnetic patch (9)；It is placed between first yoke (4) and the second yoke (7) the first magnet steel (6), third yoke (8)
The second magnet steel (11) are placed with the 4th yoke (10) centre, are used to form biasing magnetic flux；
First armature (3) and the second armature (13) coaxially splice, and the first armature (3) and the second armature (13) circumferentially uniformly divide
It is furnished with N number of armature tooth, armature tooth forms armature magnetic pole, and armature magnetic pole face includes the arc-shaped circumferential flank of tooth (31) and side elevation
(32), the end of the flank of tooth (31) and yoke magnetic pole (15) forms radial air gap；Side elevation (32) is located in one end of the flank of tooth (31),
Axial air-gap is formed with the side of yoke magnetic pole (15)；The side elevation (32) of the armature magnetic pole of first armature (3) is located at the flank of tooth
(31) one end, the side elevation (32) of the armature magnetic pole of the second armature (13) are located at the other end of the flank of tooth (31), make axial air-gap
It is symmetrically distributed in the two sides of yoke magnetic pole (15)；The double wedge one of the armature tooth of second armature (13) advanced yoke along clockwise direction
A angle, the armature tooth of the first armature (3) then fall behind the angle of the double wedge same size of yoke along clockwise direction.
2. the unidirectional proportion electro-magnet of symmetrical magneto based on air-gap compensation as described in claim 1, it is characterised in that: armature
Using drag cup structure；The drive end bearing bracket (2) and rear end cap (12), output shaft (1) and first are every magnetic patch (5) and second every magnetic
Block (9) is made of non-magnetic metal material, and the first armature (3), the second armature (13), the first yoke (4), the second yoke
(7), third yoke (8) and the 4th yoke (10) are made of the metal soft magnetic material of high permeability.
3. the unidirectional proportion electro-magnet of symmetrical magneto based on air-gap compensation as claimed in claim 1 or 2, it is characterised in that:
First yoke (4), the second yoke (7), third yoke (8) and the 4th yoke (10) ring even circumferential are distributed 8 yoke magnetic poles
(15), each yoke magnetic pole (15) is separated by 45 °；First armature (3) and the second armature (13) have been uniformly distributed circumferentially 8 armature
Tooth.
4. the unidirectional proportion electro-magnet of symmetrical magneto based on air-gap compensation as claimed in claim 3, it is characterised in that: second
1/4 angular pitch of double wedge of the armature tooth of armature (13) advanced yoke along clockwise direction, the armature tooth of the first armature (3) then edge
Fall behind 1/4 angular pitch of double wedge of yoke clockwise.
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| CN201920127678.4U CN209709911U (en) | 2019-01-25 | 2019-01-25 | The unidirectional proportion electro-magnet of symmetrical magneto based on air-gap compensation |
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| CN201920127678.4U CN209709911U (en) | 2019-01-25 | 2019-01-25 | The unidirectional proportion electro-magnet of symmetrical magneto based on air-gap compensation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111490659A (en) * | 2019-01-25 | 2020-08-04 | 浙江工业大学 | Symmetric permanent magnet type unidirectional proportional electromagnet based on air gap compensation |
| CN111490658A (en) * | 2019-01-25 | 2020-08-04 | 浙江工业大学 | Bidirectional rotary torque motor |
-
2019
- 2019-01-25 CN CN201920127678.4U patent/CN209709911U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111490659A (en) * | 2019-01-25 | 2020-08-04 | 浙江工业大学 | Symmetric permanent magnet type unidirectional proportional electromagnet based on air gap compensation |
| CN111490658A (en) * | 2019-01-25 | 2020-08-04 | 浙江工业大学 | Bidirectional rotary torque motor |
| CN111490659B (en) * | 2019-01-25 | 2024-06-11 | 浙江工业大学 | Symmetric permanent magnet type unidirectional proportion electromagnet based on air gap compensation |
| CN111490658B (en) * | 2019-01-25 | 2024-06-11 | 浙江工业大学 | Bidirectional rotary torque motor |
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Granted publication date: 20191129 |