CN102664099B - Outer rotor axial magnetic circuit single-pole magnetic resistance type rotating transformer for space manipulator - Google Patents
Outer rotor axial magnetic circuit single-pole magnetic resistance type rotating transformer for space manipulator Download PDFInfo
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- CN102664099B CN102664099B CN201210183934.4A CN201210183934A CN102664099B CN 102664099 B CN102664099 B CN 102664099B CN 201210183934 A CN201210183934 A CN 201210183934A CN 102664099 B CN102664099 B CN 102664099B
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Abstract
The invention provides an outer rotor axial magnetic circuit single-pole magnetic resistance type rotating transformer for a space manipulator and aims to solve the problem that the conventional rotating transformer for measuring angles is complex in structure and high in error. The rotating transformer comprises a rotor and a stator, wherein the rotor and the stator are arranged concentrically; an air gap is formed between an inner surface of the rotor and an outer surface of the stator; two ends of the axial direction of the rotor are provided with non-magnetic materials; a magnetic material positioned in the middle of the axial direction of the rotor is an inclined short sleeve; 4N tooth grooves are formed on the surface of an excircle of the stator along the circumferential direction; a convex tooth part is formed between two adjacent tooth grooves; the convex tooth parts of the stator are upwards divided into two sections along the axial direction, namely upper teeth and lower teeth; through grooves are formed between the upper teeth and lower teeth; and the through grooves and the tooth grooves have the same inner diameter. The rotating transformer is simple in structure, low in price and suitable for an angle measurement or angle sensor element; and moreover, higher precision is achieved, and the requirement of angle measurement is comprehensively met.
Description
Technical field
The present invention relates to a kind of used by space manipulator outer roller axial magnetic circuit one pole magnetoresistance transformer, belong to rotary transformer technology field.
Background technology
Space manipulator works in space environment, vibrations, high accuracy, volume weight requirement condition harshness.Existing traditional resolver for angle measurement has contact resolver, with the resolver of coupling transformer and cursor type resolver etc.Contact resolver, because its structure is more complicated, causes the speed of service and life-span etc. to be all restricted.With the resolver of coupling transformer because having increased coupling transformer, thereby increased cumulative volume and the cost of resolver, it is complicated that structure is also tending towards.Although cursor type resolver has been realized non-brushing, winding type is too complicated, and error is larger, is unfavorable for high-precision requirement.In sum, during for the less angular surveying of number of pole-pairs, existing resolver is not desirable element.For more existing magnetoresistance transformers, during angular surveying, still there is the problems such as precision is poor.
Summary of the invention
The object of the invention is in order to solve the existing complex structure of the existing resolver for angle measurement, problem that error is larger, and then a kind of used by space manipulator outer roller axial magnetic circuit one pole magnetoresistance transformer is provided.
The object of the invention is to be achieved through the following technical solutions:
A used by space manipulator outer roller axial magnetic circuit one pole magnetoresistance transformer, comprising: rotor and stator, and described rotor arranges with stator is concentric, between the inner surface of rotor and the outer surface of stator, is provided with air gap; The two ends of described rotor axial are non-magnet material, and the permeability magnetic material that is positioned at rotor axial middle is oblique short cover; On described stator outer round surface, being along the circumferential direction placed with 4N teeth groove, is double wedge part between two adjacent sheaves, and the convex teeth portion split axle of stator is upwards divided into two sections, is respectively tooth and lower tooth, is groove between upper tooth and lower tooth, and groove is identical with the internal diameter of teeth groove.
The present invention has the following advantages: the present invention is simple in structure, low price, is applicable to angular surveying or angle sensor element.Reach higher precision, more fully met the requirement of angular surveying.
Accompanying drawing explanation
The structural representation of the used by space manipulator outer roller axial magnetic circuit one pole magnetoresistance transformer that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the structural representation of rotor;
The axial section of the used by space manipulator outer roller axial magnetic circuit one pole magnetoresistance transformer that Fig. 3 provides for the embodiment of the present invention;
Fig. 4 is the structural representation of the excitation winding of stator.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail: the present embodiment is implemented take technical solution of the present invention under prerequisite, provided detailed execution mode, but protection scope of the present invention is not limited to following embodiment.
As shown in Fig. 1 ~ Fig. 4, a kind of used by space manipulator outer roller axial magnetic circuit one pole magnetoresistance transformer that the present embodiment is related, comprise: rotor 1 and stator 2, described rotor 1 and the concentric setting of stator 2, be provided with air gap 3 between the inner surface of rotor 1 and the outer surface of stator 2; The axial two ends of described rotor 1 are non-magnet material 1-2, and the permeability magnetic material 1-1 that is positioned at rotor 1 axial middle is oblique short cover; On described stator 2 outer round surface, be along the circumferential direction placed with 4N teeth groove 7, between two adjacent sheaves 7, it is double wedge part, the convex teeth portion split axle of stator 2 is upwards divided into two sections, be respectively tooth 2-1 and lower tooth 2-3, between upper tooth 2-1 and lower tooth 2-3, be groove 2-2, groove 2-2 is identical with the internal diameter of teeth groove 7.
The permeability magnetic material 1-1 of described rotor 1 is silicon steel sheet stack structure or polonium Mo alloy, and described non-magnet material 1-2 is aluminium alloy.
The thickness of the permeability magnetic material 1-1 of described rotor 1 equates with the height of upper tooth 2-1.
Described upper tooth 2-1, lower tooth 2-3 and groove 2-2 be between the two equal in length on axially along stator 2.
Further, also comprise the first winding 4, the second winding 5 and excitation winding 6, described excitation winding 6 is positioned at the middle part of stator 2, along stator 2 circumferencial directions, be positioned in groove 2-2, on stator 2, every adjacent N upper tooth 2-1 and corresponding N lower tooth 2-3 are as one group of winding tooth, the first winding 4 and the second winding 5 respectively compartment of terrain are wrapped on the upper tooth 2-1 and corresponding lower tooth 2-3 of every group of winding tooth, form two symmetrical orthogonal winding.
It is described that to be wound in every couple of upper tooth 2-1 identical with the number of turn of the first winding 4 on lower tooth 2-3 and the second winding 5.
Described excitation winding 6 is for concentrating winding.
The stator 2 of resolver and air gap 3 length between rotor 1
keep invariable, rely on the coupling area changing between stator 2 and rotor 1 to change air-gap permeance.Air gap 3 length in rotor 1 rotation process
remain unchanged, stator 2 changes according to sine and cosine rule with the coupling area of rotor 1, and air-gap permeance changes according to sine and cosine rule.So the upper tooth 2-1 of every a pair of stator 2 and the air-gap permeance of lower tooth 2-3 can be expressed as:
Wherein,
Can be obtained fom the above equation, the upper tooth 2-1 of every a pair of stator 2 and the magnetizing flux amount of lower tooth 2-3 are:
According to concentrated connected modes of circle such as sine and cosine winding employings, can calculate sine and cosine winding magnetic linkage separately as follows:
The magnetizing flux amount substitution above formula of the upper tooth 2-1 of every a pair of stator 2 and lower tooth 2-3 is obtained:
So the output potential of positive chorded winding and cosine winding can be expressed as:
In formula,
for induced potential amplitude.As shown from the above formula, the amplitude of the induced potential of positive chorded winding and the output of cosine winding is angle of rotor sine or cosine function.
The above; it is only preferably embodiment of the present invention; these embodiments are all the different implementations based under general idea of the present invention; and protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.
Claims (6)
1. a used by space manipulator outer roller axial magnetic circuit one pole magnetoresistance transformer, is characterized in that, comprising: rotor and stator, and described rotor arranges with stator is concentric, between the inner surface of rotor and the outer surface of stator, is provided with air gap; The two ends of described rotor axial are non-magnet material, and the permeability magnetic material that is positioned at rotor axial middle is oblique short cover; On described stator outer round surface, being along the circumferential direction placed with 4N teeth groove, is double wedge part between two adjacent sheaves, and the convex teeth portion split axle of stator is upwards divided into two sections, is respectively tooth and lower tooth, is groove between upper tooth and lower tooth, and groove is identical with the internal diameter of teeth groove; Also comprise the first winding, the second winding and excitation winding, described excitation winding is positioned at the middle part of stator, along stator circumference direction, be positioned in groove, on stator, the individual upper tooth of every adjacent N and a corresponding N lower tooth are as one group of winding tooth, the first winding and the second winding respectively compartment of terrain are wrapped on the upper tooth and corresponding lower tooth of every group of winding tooth, form two symmetrical orthogonal winding; It is invariable that the stator of resolver and the gas length between rotor keep, and relies on the coupling area changing between stator and rotor to change air-gap permeance.
2. transformer according to claim 1, is characterized in that, the permeability magnetic material of described rotor is silicon steel sheet stack structure or polonium Mo alloy, and described non-magnet material is aluminium alloy.
3. transformer according to claim 2, is characterized in that, the thickness of the permeability magnetic material of described rotor equates with the height of upper tooth.
4. transformer according to claim 3, is characterized in that, equal in length along on stator shaft orientation of described upper tooth, lower tooth and groove between the two.
5. transformer according to claim 4, is characterized in that, described in to be wound in every pair of upper tooth identical with the number of turn of the first winding on lower tooth and the second winding.
6. transformer according to claim 5, is characterized in that, described excitation winding is for concentrating winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210183934.4A CN102664099B (en) | 2012-06-06 | 2012-06-06 | Outer rotor axial magnetic circuit single-pole magnetic resistance type rotating transformer for space manipulator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210183934.4A CN102664099B (en) | 2012-06-06 | 2012-06-06 | Outer rotor axial magnetic circuit single-pole magnetic resistance type rotating transformer for space manipulator |
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| CN102664099A CN102664099A (en) | 2012-09-12 |
| CN102664099B true CN102664099B (en) | 2014-03-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103617882A (en) * | 2013-12-10 | 2014-03-05 | 哈尔滨工业大学 | Outer rotor axial magnetic circuit single-pole reluctance type rotary transformer with redundant winding |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101394112A (en) * | 2007-09-17 | 2009-03-25 | 陈理文 | Highly efficient electricity generator |
| CN101425372A (en) * | 2008-08-08 | 2009-05-06 | 哈尔滨工业大学 | Slope magnetic conduction construction rotor and magneto resistance type monopole rotary transformer using the rotor |
| CN102034596A (en) * | 2010-11-17 | 2011-04-27 | 哈尔滨工业大学 | Axial magnetic path multi-pole pair reluctance type rotary transformer |
| CN102386742A (en) * | 2011-11-18 | 2012-03-21 | 何嘉颖 | Outer-rotor-type eccentric rotor variable reluctance motor |
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2012
- 2012-06-06 CN CN201210183934.4A patent/CN102664099B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101394112A (en) * | 2007-09-17 | 2009-03-25 | 陈理文 | Highly efficient electricity generator |
| CN101425372A (en) * | 2008-08-08 | 2009-05-06 | 哈尔滨工业大学 | Slope magnetic conduction construction rotor and magneto resistance type monopole rotary transformer using the rotor |
| CN102034596A (en) * | 2010-11-17 | 2011-04-27 | 哈尔滨工业大学 | Axial magnetic path multi-pole pair reluctance type rotary transformer |
| CN102386742A (en) * | 2011-11-18 | 2012-03-21 | 何嘉颖 | Outer-rotor-type eccentric rotor variable reluctance motor |
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