CN100383896C - High pressure resistant bilaterally rotating permanent proportion electro-magnet - Google Patents
High pressure resistant bilaterally rotating permanent proportion electro-magnet Download PDFInfo
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- CN100383896C CN100383896C CNB2006100492092A CN200610049209A CN100383896C CN 100383896 C CN100383896 C CN 100383896C CN B2006100492092 A CNB2006100492092 A CN B2006100492092A CN 200610049209 A CN200610049209 A CN 200610049209A CN 100383896 C CN100383896 C CN 100383896C
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- piece
- stator pole
- magnet
- pole shoes
- yoke
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- 239000000696 magnetic material Substances 0.000 claims abstract description 4
- 239000004020 conductor Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 4
- 230000003068 static effect Effects 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 4
- 230000002457 bidirectional effect Effects 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 5
- 230000004907 flux Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- Permanent Magnet Type Synchronous Machine (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The present invention discloses a high-pressure resistant permanent magnetic bidirectional rotation ratio electric magnet which belongs to an electric-mechanical converted mechanism used for ratio valves and servo valves in fluid control systems. The present invention adopts a pair of stator pole shoes welded by non-magnetic materials; an armature rotor formed from a permanent magnet and a rotating shaft is arranged in each stator pole shoe; the outer surface of the stator pole shoe is provided with yoke iron; a control coil is wound on the yoke iron; a bias magnetic field generated by the permanent magnet, and a control field generated by the control coil are differentially superposed; bidirectional and continuous output torque proportionate to input signals can be obtained on the armature rotor. The present invention has the advantages of low energy consumption, less hysteresis and no zero dead area, and has the good characteristics of a static and a dynamic states. Thus, the present invention can be applied to the direct drive of power-stage valve cores of the ratio valves and the servo valves.
Description
Technical field
The present invention relates to the electromechanical switching mechanism that proportioning valve in the fluid control systems, servo valve are used, relate in particular to a kind of high pressure resistant bilaterally rotating permanent proportion electro-magnet.
Background technology
Though tradition rotation proportion electro-magnet output corner and output torque are bigger, only can provide the unidirectional drive ability, and because coil bore communicates with high-voltage oil cavity, do not have high pressure resistant property.Though conventional servo valve pilot stage torque-motor frequency response height, and have high pressure resistant property, output corner and output torque are less, and the linear work interval is little, and has negative magnetic spring rate, and control characteristic is not good, directly driving power level spool; In addition, conventional torque-motor is to obtain high pressure resistant property, cost costliness by complex structure, processing difficulties every pressuring film plate.
Summary of the invention
In order to improve output corner and output torque, increase linear work interval and frequency response, obtain high pressure resistant property by simple and reliable mode, reduce system energy consumption, the object of the present invention is to provide a kind of high pressure resistant bilaterally rotating permanent proportion electro-magnet.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of high pressure resistant bilaterally rotating permanent proportion electro-magnet is characterized in that: comprise stator pole shoes, armature rotor, N piece yoke, housing, a N control coil, front end housing, rear end cap, bearing; Stator pole shoes is an integral body that is formed by circumferential N piece non-magnetizer that evenly distributes alternately in edge and the seam of N piece magnetic conductor; The armature rotor is housed in the stator pole shoes, N piece permanent magnet and rotating shaft that the armature rotor is arranged by radial symmetric are formed, cross section, rotating shaft stage casing is the regular polygon on N limit, rotating shaft two end sections are circular, N piece permanent magnet is fixed on the rotating shaft stage casing, magnetic pole is interspersed, and is opposite along the magnetic direction of circumferential adjacent pole; The bearings of armature rotor by being fixed on the rotating shaft two ends is in front end housing and rear end cap; Housing inner cylinder face upper edge circumferentially is symmetrically fixed with N piece yoke, on the inner face of N piece yoke stator pole shoes is housed, N piece yoke, stator pole shoes and housing three are fixed into one, N piece magnetic conductor on the stator pole shoes and the closely contact mutually of N piece yoke, and be symmetrical distribution; Every permanent magnet forms two working gas gaps with magnetic conductor on the relative stator pole shoes on the armature rotor; Above-described N is the even number more than or equal to 2.
N piece non-magnetizer is the fan-shaped of symmetry on the stator pole shoes, and makes per two interblocks of N piece magnetic conductor form one every yoke distance.
The magnetic pole strength radius of curvature of N piece permanent magnet is greater than the radius of curvature of cylinder in the stator pole shoes on the armature rotor.
Described front end housing, rear end cap are the non-magnetizer that non-magnet material is made.
Described housing, N piece yoke, rotating shaft are the good magnetic conductor that soft magnetic material is made.
The present invention compares with background technology, and the useful effect that has is:
1, output torque (or corner) can two-way continuous control, no zero-bit dead band;
2, output torque (or corner) is big, the power-weight ratio height, and linear work is interval big;
3, have positive magnetic spring rate, good operating stability;
4, the static characteristic nonlinearity erron is little, and the ring that stagnates is little, and frequency response is higher;
5, high pressure resistant simple and reliable for structure, realize that easily operating pressure is up to 31.5MPa;
6, rotor permanent magnet magnetizes simply, need not radially to magnetize.
Therefore, the present invention can be applicable to the direct driving of proportioning valve, servo valve power stage spool.
Description of drawings
Fig. 1 is a structural principle schematic diagram of the present invention;
Fig. 2 for the A-A of structural principle schematic diagram of the present invention to cutaway view;
Fig. 3 is a pivot structure schematic diagram of the present invention;
Fig. 4 is stator pole shoes of the present invention and magnet structure schematic diagram;
Fig. 5 is the present invention's work schematic diagram under the different incentive conditions when zero-bit;
Fig. 6 is the static zero current-torque characteristics of the present invention.
Among the figure: 1, front end housing, 2, housing, 3,4,5,6, yoke, 7, stator pole shoes, 8,9,10,11, control coil, 12, rear end cap, 13, bearing, 14, armature rotor, 15,16,17,18, permanent magnet, 19, rotating shaft, 20, keep snap ring, 21,22,23,24, magnetic conductor, 25,26,27,28, non-magnetizer, 29,30,31,32,33,34,35,36, working gas gap, 37, front end housing external part, 38, rear end cap external part, 39, sealing ring, 40, the rotating shaft stage casing.
Embodiment
The present invention is example with the quaternary structure, and the invention will be further described below in conjunction with accompanying drawing.
As Fig. 1, Fig. 2, shown in Figure 3, the present invention includes stator pole shoes 7, armature rotor 14, yoke 3,4,5,6, housing 2, control coil 8,9,10,11, front end housing 1, rear end cap 12, bearing 13; Stator pole shoes 7 is an integral body by non-magnetizer 25,26,27,28 along circumferentially being evenly divided into four part magnetic conductors 21,22,23,24 and seam, and very high fluid pressure can be born in inside; Stator pole shoes 7 fixes with rear end cap 12, and front end housing 1 and rear end cap 12 are separately fixed on the housing 2; Armature rotor 14 is housed in the stator pole shoes 7, four permanent magnets 15 that armature rotor 14 is arranged by radial symmetric, 16,17,18 and rotating shaft 19 form, 40 cross sections, rotating shaft 19 stage casings are the regular polygon of even number of sides, 19 liang of end sections of rotating shaft are circular, permanent magnet 15,16,17,18 are fixed on rotating shaft 19 stage casings 40, magnetic pole is interspersed, circumferentially the magnetic direction of adjacent pole is opposite, wherein, permanent magnet 16,18 the N utmost point outwardly, permanent magnet 15,17 the S utmost point outwardly, armature rotor 14 is supported in front end housing 1 and the rear end cap 12 by the bearing 13 that is fixed on rotating shaft 19 two ends, can rotate around central shaft; Front end housing external part 37 and rear end cap external part 38 match with the inner cylinder face of stator pole shoes 7 respectively, have cannelure on front end housing external part 37 and the rear end cap external part 38, can put into sealing ring 39 and make control coil 8,9,10,11 and hydraulic oil isolated; Housing 2 outer surfaces have a lead fairlead near the end, link to each other with convenient control coil 8,9,10,11 ends are drawn with extraneous control circuit; Housing 2 inner cylinder face upper edges circumferentially are symmetrically fixed with four yokes 3,4,5,6, on the inner face of yoke 3,4,5,6 stator pole shoes 7 is housed, yoke 3,4,5,6, stator pole shoes 7 and housing 2 threes are fixed into one, magnetic conductor 21,22,23,24 on the stator pole shoes 7 closely contacts mutually with yoke 3,4,5,6 respectively, and is symmetrical distribution; Every permanent magnet forms two working gas gaps with magnetic conductor on the relative stator pole shoes 7 on the armature rotor 14, permanent magnet 15 forms two working gas gaps 29 with magnetic conductor 21,24 respectively, 30, permanent magnet 16 forms two working gas gaps 31 with magnetic conductor 21,22 respectively, 32, permanent magnet 17 forms two working gas gaps 33,34 with magnetic conductor 22,23 respectively, permanent magnet 18 forms two working gas gaps 35,36 with magnetic conductor 23,24 respectively.
As shown in Figure 4, for obtaining Linear Control characteristic and positive magnetic spring rate, increase the linear work interval, the polar front shape of stator pole shoes 7 and permanent magnet 15,16,17,18 has passed through particular design.Non-magnetizer 25,26,27,28 is the fan-shaped of symmetry on the stator pole shoes 7, and makes 21,22,23,24 of magnetic conductors form one every yoke distance ζ, reduces output torque every the too small meeting of yoke distance ξ, crosses conference every yoke distance ξ and increases nonlinearity erron; The magnetic pole strength radius of curvature R 1 of permanent magnet 15,16,17,18 is greater than the radius of curvature R 2 of cylinder in the stator pole shoes 7 on the armature rotor 14, and radius of curvature R 1 too small meeting increases nonlinearity erron, reduces the linear work interval.
Make permanent magnet 21,22,23,24 secure fixation on rotating shaft 19 stage casings 40 by the maintenance snap ring of making by non-magnet material 20.
For satisfying the requirement of biasing magnetic flux and control magnetic flux, front end housing 1, the rear end cap 12 of high pressure resistant bilaterally rotating permanent proportion electro-magnet are the non-magnetizer that non-magnet material is made, and housing 2, yoke 3,4,5,6, rotating shaft 19 are the good magnetic conductor that soft magnetic material is made.
Shown in Fig. 5 (a), the obstructed electric current of control coil, the bias magnetic field that has only permanent magnet 15,16,17,18 to produce in the working gas gap 29,30,31,32,33,34,35,36, and the magnetic field intensity in the working gas gap 29,30,31,32,33,34,35,36 is all identical, and armature rotor 14 rests on meta; Shown in Fig. 5 (b), control coil 8,9,10,11 feeds the direction as shown Control current, wherein,
Table
Show Control current along paper inwards, " ⊙ " expression Control current is outside along paper; The control flow direction along paper down in the yoke 3, in the yoke 4 control flow direction along paper towards the right side, the control flow direction along paper up in the yoke 5, in the yoke 6 control flow direction along paper towards a left side, control magnetic flux and biasing magnetic flux mutual superposition in working gas gap 29,30,31,32,33,34,35,36, magnetic field intensity strengthens in the working gas gap 30,32,34,36, magnetic field intensity weakens in the working gas gap 29,31,33,35, rotor armature 14 is subjected to clockwise moment, toward the clockwise direction rotation; In like manner, after control coil 8,9,10,11 feeds rightabout Control current, rotor armature 14 will be subjected to clockwise moment, and rotation toward the clockwise direction is shown in Fig. 5 (c).The working method of high pressure resistant bilaterally rotating permanent proportion electro-magnet is a differential-type.
Because permanent magnet 15,16,17,18 magnetic resistance are big, and working gas gap the 29,30,31,32,33,34,35, the 36th changes and changes by overlapping area, change but not pass through variable in distance, so corner-torque factor has negative slope, the magnetic spring rate be on the occasion of, static zero current-torque characteristics is linear, as shown in Figure 6.
Above-mentioned embodiment is used for the present invention that explains, rather than limits the invention, and in the protection range of spirit of the present invention and claim, any modification and change to the present invention makes all fall into protection scope of the present invention.
Claims (5)
1. a high pressure resistant bilaterally rotating permanent proportion electro-magnet is characterized in that: comprise stator pole shoes (7), armature rotor (14), N piece yoke, housing (2), a N control coil, front end housing (1), rear end cap (12), bearing (13); Stator pole shoes (7) is an integral body that is formed by circumferential N piece non-magnetizer that evenly distributes alternately in edge and the seam of N piece magnetic conductor; Armature rotor (14) is housed in the stator pole shoes (7), N piece permanent magnet and rotating shaft (19) that armature rotor (14) is arranged by radial symmetric are formed, cross section, rotating shaft (19) stage casing (40) is the regular polygon on N limit, rotating shaft (19) two end sections are circular, N piece permanent magnet is fixed on rotating shaft (19) stage casing (40), magnetic pole is interspersed, and is opposite along the magnetic direction of circumferential adjacent pole; Armature rotor (14) is supported in front end housing (1) and the rear end cap (12) by the bearing (13) that is fixed on rotating shaft (19) two ends; Housing (2) inner cylinder face upper edge circumferentially is symmetrically fixed with N piece yoke, stator pole shoes (7) is housed on the inner face of N piece yoke, N piece yoke, stator pole shoes (7) and housing (2) three are fixed into one, N piece magnetic conductor on the stator pole shoes (7) and the closely contact mutually of N piece yoke, and be symmetrical distribution; The last every permanent magnet of armature rotor (14) forms two working gas gaps with magnetic conductor on the relative stator pole shoes (7); Above-described N is the even number more than or equal to 2.
2. a kind of high pressure resistant bilaterally rotating permanent proportion electro-magnet according to claim 1 is characterized in that: stator pole shoes (7) is gone up N piece non-magnetizer and is the fan-shaped of symmetry, and makes per two interblocks of N piece magnetic conductor form one every yoke distance (ξ).
3. a kind of high pressure resistant bilaterally rotating permanent proportion electro-magnet according to claim 1 is characterized in that: armature rotor (14) is gone up the radius of curvature (R2) of the magnetic pole strength radius of curvature (R1) of N piece permanent magnet greater than the interior cylinder of stator pole shoes (7).
4. a kind of high pressure resistant bilaterally rotating permanent proportion electro-magnet according to claim 1 is characterized in that: the non-magnetizer that described front end housing (1), rear end cap (12) are made for non-magnet material.
5. a kind of high pressure resistant bilaterally rotating permanent proportion electro-magnet according to claim 1 is characterized in that: described housing (2), N piece yoke, rotating shaft (19) are the good magnetic conductor that soft magnetic material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100492092A CN100383896C (en) | 2006-01-23 | 2006-01-23 | High pressure resistant bilaterally rotating permanent proportion electro-magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100492092A CN100383896C (en) | 2006-01-23 | 2006-01-23 | High pressure resistant bilaterally rotating permanent proportion electro-magnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1805078A CN1805078A (en) | 2006-07-19 |
| CN100383896C true CN100383896C (en) | 2008-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100492092A Expired - Fee Related CN100383896C (en) | 2006-01-23 | 2006-01-23 | High pressure resistant bilaterally rotating permanent proportion electro-magnet |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984496B (en) * | 2010-08-31 | 2012-04-25 | 浙江大学 | K-type disc proportional electromagnet |
| CN101984495B (en) * | 2010-08-31 | 2012-07-25 | 浙江大学 | Stepped disc type ratio electromagnet |
| CN103674073A (en) * | 2012-08-31 | 2014-03-26 | 鼎佳（天津）汽车电子有限公司 | Three-pole-piece sensor |
| JP6519452B2 (en) * | 2015-11-11 | 2019-05-29 | 日本精工株式会社 | Yoke cover, torque detection device and electric power steering device, method of manufacturing yoke cover, and method of manufacturing electric power steering device |
| CN105913995B (en) * | 2016-05-16 | 2017-08-04 | 山东康达精密机械制造有限公司 | A kind of proportion electro-magnet structure for electron speed regulator |
| CN109448950B (en) * | 2018-12-07 | 2020-11-03 | 太原理工大学 | Radial magnetizing moving-magnet type proportional electromagnet |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3317426A1 (en) * | 1983-05-13 | 1984-11-15 | Schramme GmbH, 7778 Markdorf | Rotating magnet |
| DE3415431A1 (en) * | 1983-05-25 | 1984-11-29 | Isliker Magnete AG, Andelfinger | Rotating magnet |
-
2006
- 2006-01-23 CN CNB2006100492092A patent/CN100383896C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3317426A1 (en) * | 1983-05-13 | 1984-11-15 | Schramme GmbH, 7778 Markdorf | Rotating magnet |
| DE3415431A1 (en) * | 1983-05-25 | 1984-11-29 | Isliker Magnete AG, Andelfinger | Rotating magnet |
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| CN1805078A (en) | 2006-07-19 |
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Granted publication date: 20080423 Termination date: 20120123 |