CN103617882A - Outer rotor axial magnetic circuit single-pole reluctance type rotary transformer with redundant winding - Google Patents

Abstract

The invention discloses an outer rotor axial magnetic circuit single-pole reluctance type rotary transformer with a redundant winding and relates to the technical field of outer rotor axial magnetic circuit single-pole reluctance type rotary transformers with redundant windings. The outer rotor axial magnetic circuit single-pole reluctance type rotary transformer with the redundant winding aims at solving the problems that a current rotary transformer used for measuring angles is complicated in structure and large in error. One end face of a first ring of the outer rotor axial magnetic circuit single-pole reluctance type rotary transformer is in butt joint with one end face of a second ring, and the other end face of the second ring is in butt joint with one end face of a third ring. The second ring is an inclined ring and made of permeability magnetic materials, and a first sinusoidal signal winding, a second sinusoidal signal winding, a first cosine signal winding and a second cosine signal winding are arranged on an upper teeth and a lower teeth at intervals in a winding mode respectively. A first exciting winding and a second exciting winding are arranged in a through annular groove in a winding mode. When the outer rotor axial magnetic circuit single-pole reluctance type rotary transformer rotates to work, the output impedance of the outer rotor axial magnetic circuit single-pole reluctance type rotary transformer varies little and is not affected by loads. According to the structure with the redundant winding, when one set of coil winding breaks down, the outer rotor axial magnetic circuit single-pole reluctance type rotary transformer can still work normally.

Description

Outer roller axial magnetic circuit one pole magnetoresistance transformer with redundancy winding

Technical field

The present invention relates to a kind of technical field of the outer roller axial magnetic circuit one pole magnetoresistance transformer with redundancy winding.

Background technology

Traditional Wound-rotor type resolver, owing to there being the existence of slip ring or coupling transformer that its volume increase, reliability are reduced.Magnetoresistance transformer has solved traditional Wound-rotor type and has revolved a difficult problem that becomes excitation structure complexity, has contactless, simple in structure, durable reliable advantage, has obtained in recent years development rapidly.Make a general survey of a domestic outward turning popular form of narrative literature flourishing in the Tang Dynasty and offer and product, existing magnetoresistance transformer adopts radial magnetic structure mostly, by changing gas length, changes air-gap permeance.When gas length becomes large, can make the output impedance of resolver significantly reduce, and be subject to load effect larger.Meanwhile, because rotor is used salient-pole structure, make the volume of radial magnetic circuit magnetoresistance transformer very large, be not suitable for applying in small space.Range of application is diminished.

Summary of the invention

The object of the invention is in order to solve the problems such as the current existing complex structure of resolver, error for angle measurement is larger, and a kind of outer roller axial magnetic circuit one pole magnetoresistance transformer with redundancy winding is provided.

Described object realizes by following scheme: described a kind of outer roller axial magnetic circuit one pole magnetoresistance transformer with redundancy winding, is comprised of circular ring type rotor, stator, the first sinusoidal signal winding, the second sinusoidal signal winding, the first cosine signal winding, the second cosine signal winding, the first excitation winding, the second excitation winding; Circular ring type rotor is enclosed within stator outside, between circular ring type rotor inner headed face and the periphery of stator, has air gap; Described circular ring type rotor is comprised of the first annulus, the second annulus, the 3rd annulus; The first one of annulus end face docks with an end face of the second annulus, and another end face of the second annulus docks with an end face of the 3rd annulus, and the second annulus is oblique annulus; The material of the second annulus is permeability magnetic material, and the material of the first annulus and the 3rd annulus is non-magnet material; On described stator outer surface, have vertically 4N teeth groove, the middle part of stator outer surface has a logical annular groove along the circumferential direction, and logical annular groove bottom surface diameter is identical with the bottom surface diameter of teeth groove; By teeth groove and logical annular groove, to the cutting apart of stator periphery, and on the outside of stator, form tooth and 4N lower tooth on evenly distributed 4N; The first sinusoidal signal winding, the second sinusoidal signal winding and the first cosine signal winding, the second cosine signal winding respectively interval are wrapped on tooth and lower tooth; Described the first excitation winding, the second excitation winding are wrapped in logical annular groove.

The present invention is when rotary work, and its output impedance changes little, is not subject to load effect.Have advantages of that volume is little simultaneously.Also adopted the structure with redundance type winding, when a set of coil windings breaks down, still can work, thereby reduced because winding failure causes resolver the brought trouble of can not working.

Accompanying drawing explanation

Fig. 1 is overall structure schematic diagram of the present invention;

Fig. 2 is that sectional structure schematic diagram is looked up in the axle center of crossing of Fig. 1;

Fig. 3 be in Fig. 1 circular ring type rotor 1 look up structural representation.

Embodiment

Embodiment one: as shown in Figure 1, Figure 2, Figure 3 shows, it is comprised of circular ring type rotor 1, stator 2, the first sinusoidal signal winding 4, the second sinusoidal signal winding 4-1, the first cosine signal winding 5, the second cosine signal winding 5-1, the first excitation winding 6, the second excitation winding 6-1; Circular ring type rotor 1 is enclosed within stator 2 outsides, between circular ring type rotor 1 inner headed face and the periphery of stator 2, has air gap 3; Described circular ring type rotor 1 is comprised of the first annulus 1-1, the second annulus 1-2, the 3rd annulus 1-3; The first mono-of annulus 1-1 end face docks with an end face of the second annulus 1-2, and another end face of the second annulus 1-2 docks with an end face of the 3rd annulus 1-3, and the second annulus 1-2 is oblique annulus; The material of the second annulus 1-2 is permeability magnetic material, and the material of the first annulus 1-1 and the 3rd annulus 1-3 is non-magnet material; On described stator 2 outer surfaces, have vertically 4N teeth groove 2-2, the middle part of stator 2 outer surfaces has a logical annular groove 2-3 along the circumferential direction, and logical annular groove 2-3 bottom surface diameter is identical with the bottom surface diameter of teeth groove 2-2; By teeth groove 2-2 and logical annular groove 2-3, to the cutting apart of stator 2 peripheries, and on the outside of stator 2, form tooth 2-1 and 4N lower tooth 2-4 on evenly distributed 4N; The first sinusoidal signal winding 4, the second sinusoidal signal winding 4-1 and the first cosine signal winding 5, the second cosine signal winding 5-1 are wrapped on tooth 2-1 and lower tooth 2-4 at interval respectively; Described the first excitation winding 6, the second excitation winding 6-1 are wrapped in logical annular groove 2-3.

The material of described the second annulus 1-2 is permeability magnetic material, specifically can select silicon steel sheet stack to add the materials such as structure, polonium Mo alloy or soft magnetic ferrite.The material of the first annulus 1-1 and the 3rd annulus 1-3 is non-magnet material, specifically can select aluminum alloy materials.

Embodiment two: as shown in Figure 1, Figure 2, Figure 3 shows, this embodiment is that with the difference of embodiment one described the first sinusoidal signal winding 4, the second sinusoidal signal winding 4-1, the first cosine signal winding 5, the second cosine signal winding 5-1, the first excitation winding 6, the second excitation winding 6-1 adopt inside and outside distribution mode setting.Other composition and annexation are identical with embodiment one.

Embodiment three: as shown in Figure 1, Figure 2, Figure 3 shows, this embodiment is that with the difference of embodiment one described the first excitation winding 6, the second excitation winding 6-1 are adopted as concentrated winding, and umber of turn is identical, and line style is identical.Other composition and annexation are identical with embodiment one.Present embodiment can realize the first excitation winding 6 and equate with the second excitation winding 6-1 resistance, thereby has identical performance when the first excitation winding 6 is worked with the second excitation winding 6-1.

Embodiment four: as shown in Figure 1, Figure 2, Figure 3 shows, the difference of this embodiment and embodiment one be described upper tooth 2-1 and lower tooth 2-4 and logical annular groove 2-3 between the two along stator 2 equal in length on axially.Other composition and annexation are identical with embodiment one.

Operation principle: the gas length g between fixed, the circular ring type rotor of resolver keeps invariable, relies on the coupling area changing between fixed, circular ring type rotor to change air-gap permeance.In circular ring type rotor rotation process, gas length g remains unchanged, and the coupling area of stator 2 teeth and circular ring type rotor 1 changes according to sine and cosine rule, 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 2-4 can be expressed as:

${\mathrm{\&Lambda;}}_i={\mathrm{\&mu;}}_0\&CenterDot;\frac{S}{g}={\mathrm{\&mu;}}_0\&CenterDot;\frac{K\&CenterDot;\cos \mathrm{\&theta;}}{g}={\mathrm{<figure-callout\; id="1"\; label="C"\; filenames="131210115143.png"\; state="\{\{state\}\}">C</figure-callout>}}_1\cos [\mathrm{\&theta;}+(i-1)\frac{2\mathrm{\&pi;}}{Z_s}]$

Wherein, $S=K\&CenterDot;\cos [\mathrm{\&theta;}+(i-1)\frac{2\mathrm{\&pi;}}{Z_s}]$

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 2-4 are:

${\mathrm{\&phi;}}_i={\mathrm{<figure-callout\; id="2"\; label="C"\; filenames="131210115143.png"\; state="\{\{state\}\}">C</figure-callout>}}_2\&CenterDot;\cos [\mathrm{\&theta;}+(i-1)\frac{2\mathrm{\&pi;}}{Z_s}]$

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:

$\left\{\begin{array}{ccc}{\mathrm{\&psi;}}_s=\underset{i=1}{\overset{3}{\mathrm{\&Sigma;}}}& {\mathrm{<figure-callout\; id="2"\; label="N"\; filenames="131210115143.png"\; state="\{\{state\}\}">N</figure-callout>}}_2{\mathrm{\&phi;}}_i-\underset{i=7}{\overset{9}{\mathrm{\&Sigma;}}}& {\mathrm{<figure-callout\; id="2"\; label="N"\; filenames="131210115143.png"\; state="\{\{state\}\}">N</figure-callout>}}_2{\mathrm{\&phi;}}_i\\ {\mathrm{\&psi;}}_c=\underset{i=4}{\overset{6}{\mathrm{\&Sigma;}}}& {\mathrm{<figure-callout\; id="2"\; label="N"\; filenames="131210115143.png"\; state="\{\{state\}\}">N</figure-callout>}}_2{\mathrm{\&phi;}}_i-\underset{i=10}{\overset{12}{\mathrm{\&Sigma;}}}& {\mathrm{<figure-callout\; id="2"\; label="N"\; filenames="131210115143.png"\; state="\{\{state\}\}">N</figure-callout>}}_2{\mathrm{\&phi;}}_i\end{array}\right.$

The magnetizing flux amount substitution above formula of the upper tooth 2-1 of every a pair of stator 2 and lower tooth 2-4 is obtained:

$\left\{\begin{array}{c}{\mathrm{\&psi;}}_s={\mathrm{<figure-callout\; id="2"\; label="Z\; S\; N"\; filenames="131210115143.png"\; state="\{\{state\}\}">Z</figure-callout>}}_S{N}_{}{}_2{\mathrm{\&phi;}}_i\sin \mathrm{N\&theta;}\\ {\mathrm{\&psi;}}_c={\mathrm{<figure-callout\; id="2"\; label="Z\; S\; N"\; filenames="131210115143.png"\; state="\{\{state\}\}">Z</figure-callout>}}_S{N}_{}{}_2{\mathrm{\&phi;}}_i\cos \mathrm{N\&theta;}\end{array}\right.$

So the output potential of positive chorded winding and cosine winding can be expressed as:

$\left\{\begin{array}{c}{e}_s=-\frac{{\mathrm{d\&psi;}}_s}{\mathrm{dt}}=-Z_{\mathrm{<figure-callout\; id="2"\; label="S\; N"\; filenames="131210115143.png"\; state="\{\{state\}\}">S</figure-callout>}}{N}_{}{}_2\sin \mathrm{N\&theta;}\frac{{\mathrm{d\&phi;}}_i}{\mathrm{dt}}=-e_m\sin \mathrm{N\&theta;}\\ e_c=-\frac{d{\mathrm{\&psi;}}_c}{\mathrm{dt}}=-Z_{\mathrm{<figure-callout\; id="2"\; label="S\; N"\; filenames="131210115143.png"\; state="\{\{state\}\}">S</figure-callout>}}{N}_{}{}_2\cos \mathrm{N\&theta;}\frac{{\mathrm{d\&phi;}}_i}{\mathrm{dt}}=-e_m\cos \mathrm{n\&theta;}\end{array}\right.$

In formula, e _mfor 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 sine or the cosine function of circular ring type angle of rotor.

Claims (4)

1. with the outer roller axial magnetic circuit one pole magnetoresistance transformer of redundancy winding, it is characterized in that it is comprised of circular ring type rotor (1), stator (2), the first sinusoidal signal winding (4), the second sinusoidal signal winding (4-1), the first cosine signal winding (5), the second cosine signal winding (5-1), the first excitation winding (6), the second excitation winding (6-1); Circular ring type rotor (1) is enclosed within stator (2) outside, between circular ring type rotor (1) inner headed face and the periphery of stator (2), has air gap (3); Described circular ring type rotor (1) is comprised of the first annulus (1-1), the second annulus (1-2), the 3rd annulus (1-3); End face of the first annulus (1-1) docks with an end face of the second annulus (1-2), and another end face of the second annulus (1-2) docks with an end face of the 3rd annulus (1-3), and the second annulus (1-2) is oblique annulus; The material of the second annulus (1-2) is permeability magnetic material, and the material of the first annulus (1-1) and the 3rd annulus (1-3) is non-magnet material; On described stator (2) outer surface, have vertically 4N teeth groove (2-2), the middle part of stator (2) outer surface has a logical annular groove (2-3) along the circumferential direction, and logical annular groove (2-3) bottom surface diameter is identical with the bottom surface diameter of teeth groove (2-2); By teeth groove (2-2) and logical annular groove (2-3), to the cutting apart of stator (2) periphery, and on the outside of stator (2), form evenly distributed 4N upper tooth (2-1) and 4N lower tooth (2-4); The first sinusoidal signal winding (4), the second sinusoidal signal winding (4-1) and the first cosine signal winding (5), the second cosine signal winding (5-1) respectively interval are wrapped on tooth (2-1) and lower tooth (2-4); Described the first excitation winding (6), the second excitation winding (6-1) are wrapped in logical annular groove (2-3).

2. the outer roller axial magnetic circuit one pole magnetoresistance transformer with redundancy winding according to claim 1, is characterized in that described the first sinusoidal signal winding (4), the second sinusoidal signal winding (4-1), the first cosine signal winding (5), the second cosine signal winding (5-1), the first excitation winding (6), the second excitation winding (6-1) adopt inside and outside distribution mode setting.

3. the outer roller axial magnetic circuit one pole magnetoresistance transformer with redundancy winding according to claim 1, it is characterized in that described the first excitation winding (6), the second excitation winding (6-1) are adopted as concentrated winding, umber of turn is identical, and line style is identical.

4. the outer roller axial magnetic circuit one pole magnetoresistance transformer with redundancy winding according to claim 1, it is characterized in that described upper tooth (2-1) and lower tooth (2-4) and logical annular groove (2-3) between the two along stator (2) equal in length on axially.

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