CN104200976A - Harmonic-wave eliminating type axial magnetic circuit monopolar rotary transformer and winding method of signal windings - Google Patents
Harmonic-wave eliminating type axial magnetic circuit monopolar rotary transformer and winding method of signal windings Download PDFInfo
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- CN104200976A CN104200976A CN201410474909.0A CN201410474909A CN104200976A CN 104200976 A CN104200976 A CN 104200976A CN 201410474909 A CN201410474909 A CN 201410474909A CN 104200976 A CN104200976 A CN 104200976A
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Abstract
The invention discloses a harmonic-wave eliminating type axial magnetic circuit monopolar rotary transformer and a winding method of signal windings, belongs to the technical field of transformers and aims to solve the problem that an existing magneto-resistive type rotary transformer is overhigh in measurement accuracy caused by function error. An annular groove is processed in the inner ring surface of a stator and divides 4N long stator teeth into 4N upper stator teeth and 4N lower stator teeth, and 4N pairs of stator teeth are formed by the 4N upper stator teeth and the 4N lower stator teeth; an excitation winding is disposed in the annular groove; coarse and fine sine and cosine signal windings are wound on the stator teeth in a layered manner. Starting from a plane along the clockwise direction, the fine sine signal winding is wound on the first group of adjacent 2N pairs of stator teeth anticlockwise and wound on the second group of adjacent 2N pairs of stator teeth clockwise, and the coarse and fine sine and cosine signal windings are identical in winding mode and 90 electrical degrees in phase difference. The rotary transformer is applied to the occasion that rotary encoders cannot work normally.
Description
Technical field
The present invention relates to a kind of harmonic wave eliminating formula axial magnetic circuit resolver and signal winding method for winding, belong to transformer technology field.
Background technology
Resolver is as the high-precision sensor of reliability and high noise immunity, is suitable for the detection of completing place and speed in space manipulator control system, require lightweight, diameter is little, precision is high, simple in structure.Magnetoresistance transformer is fast-developing in recent years a kind of resolver.It is brushless, without coupling transformer formula structure, use reliable compared with phase-wound rotor resolver, life-span is long, be widely used in high temperature, severe cold, humidity, at a high speed, the occasion that cannot normally work of the rotary encoder such as high vibrations, as fields such as robot system, machine tool, automobile, electric power, metallurgy, weaving, printings.Be in crucial and primary study stage in the application of space flight and aviation field at present.Existing axial type magnetoresistance transformer precision is relatively low.
Summary of the invention
The object of the present invention is to provide a kind of harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer and signal winding method for winding, the certainty of measurement problems of too being caused by function error for solving existing magnetoresistance transformer, the present invention adopts specific winding mode, reasonably arrange signal winding, can more effectively weaken the error being produced by harmonic problem.
Realize above-mentioned purpose, the technical scheme of taking is as follows:
Harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer of the present invention, comprises stator, rotor, excitation winding, sinusoidal signal winding and cosine signal winding; Rotor and stator are drum, between stator and rotor, there is the air gap equating, stator inner loop face is processed with 4N stator elongated slot and 4N the long tooth of stator vertically, 4N stator elongated slot is along the uniform setting of stator inner loop face, in the middle of adjacent two stator elongated slots, be the described long tooth of stator, 4N stator elongated slot and 4N the long tooth of stator are positioned on the same circumference of stator inner loop face; The middle part of stator inner loop face is processed with a cannelure along the circumferential direction, and cannelure is opened in the middle part of stator elongated slot and the long tooth of stator, 4N the long tooth of stator is divided into 4N upper stator tooth and 4N lower stator tooth by cannelure, forms 4N to stator tooth by 4N upper stator tooth and 4N lower stator tooth; Wherein, N is natural number, and the span of N is 2～15; Excitation winding is positioned in the cannelure of stator, and excitation winding arranges with stator is concentric; Sinusoidal signal winding and cosine signal winding set up the two-layer 4N of being wound in separately on stator tooth.
Harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer winding method for winding of the present invention, described method is:
For sinusoidal signal winding, choose arbitrarily axis and not crossing with a stator tooth plane of crossing stator, and taking this plane as benchmark, along clockwise direction 4N is divided into two groups to stator tooth; Start along clockwise direction first group of adjacent 2N to be wound the line in the counterclockwise direction to stator tooth from plane, second group of adjacent 2N winds the line along clockwise direction to stator tooth; Described cosine signal winding winding mode is identical with sinusoidal signal winding winding mode, differs 90 ° of electrical degrees in phase place.
The present invention has following beneficial effect:
1, harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer of the present invention is a kind of high accuracy angle sensor element based on magnetic resistance change rate principle, it simple in structure, compact, not only make electromotive force stationary component reduce, can also eliminate to greatest extent the error of being brought by setting-up eccentricity etc., thereby improve certainty of measurement.
2, on rotor, there is permeability magnetic material, and permeability magnetic material is oblique ring type distribution.Excitation winding with just, cosine signal winding is arranged in stator elongated slot in orthogonal mode, and winding is not set on rotor.In the time that excitation winding passes to the alternating current of constant voltage frequency, above-mentioned two phase signals windings are exported respectively the voltage of electromotive force amplitude with angle of rotor work sine and varies with cosine.The present invention is applicable to speed and the position transducer of servo system.
3, this axial magnetic circuit magneto resistance type monopole rotary transformer with stator harmonic wave eliminating function of the present invention has improved certainty of measurement on existing axial magnetoresistance transformer basis.
4, the variation of air-gap permeance of invention mainly depends on the variation with mechanical angle of coupling area between rotor and stator, and the permeability magnetic material that is embodied as rotor is with the variation of relative position between the upper stator tooth of stator and lower stator tooth.
5, method of the present invention can reduce harmonic error content effectively, thereby improves certainty of measurement on existing magnetoresistance transformer basis.
To sum up, harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer of the present invention and signal winding method for winding can be widely used in high temperature, severe cold, humidity, at a high speed, the occasion that cannot normally work of the rotary encoder such as high vibrations, as fields such as robot system, machine tool, automobile, electric power, metallurgy, weaving, printings.
Brief description of the drawings
Fig. 1 is the structural representation of harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer;
Fig. 2 is the structural representation of rotor;
Fig. 3 is the axial section of harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer;
Fig. 4 be harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer just, the number of turn distribution map of cosine signal winding, what in figure, E referred to is sinusoidal phase, what F referred to is cosine phase, black region is expressed as the number of turn value of institute's respective signal winding;
Fig. 5 is the structural representation of excitation winding.
Component names shown in figure and label are as follows:
Rotor 1, tiltedly encircle 1-1, stop sleeve 1-2, stator 2, upper stator tooth 2-1, cannelure 2-2, lower stator tooth 2-3, air gap 3, sinusoidal signal winding 4, cosine signal winding 5, plane 6, stator elongated slot 7, excitation winding 8, stator tooth 9.
Embodiment
Embodiment one: as shown in Fig. 1～Fig. 5, harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer, comprises stator 2, rotor 1, excitation winding 8, sinusoidal signal winding 4 and cosine signal winding 5; Rotor 1 and stator 2 are drum, between stator 2 and rotor 1, there is the air gap 3 equating, stator 2 inner ring surfaces are processed with 4N stator elongated slot 7 and 4N the long tooth of stator vertically, 4N stator elongated slot 7 is along the uniform setting of stator 2 inner ring surface, in the middle of adjacent two stator elongated slots 7, be the described long tooth of stator, 4N stator elongated slot 7 and 4N the long tooth of stator are positioned on the same circumference of stator 2 inner ring surfaces; The middle part of stator 2 inner ring surfaces is processed with a cannelure 2-2 along the circumferential direction, and cannelure 2-2 is opened in the middle part of stator elongated slot 7 and the long tooth of stator, 4N the long tooth of stator is divided into 4N upper stator tooth 2-1 and 4N lower stator tooth 2-3 by cannelure 2-2, forms 4N to stator tooth 9 by 4N upper stator tooth 2-1 and 4N lower stator tooth 2-3; Wherein, N is natural number, and the span of N is 2～15; Excitation winding 8 is positioned in the cannelure 2-2 of stator 2, excitation winding 8 and the concentric setting of stator 2; Sinusoidal signal winding 4 sets up the two-layer 4N of being wound in separately on stator tooth 9 with cosine signal winding 5; Be that sinusoidal signal winding 4 and cosine signal winding 5 be not in same layer setting.
The groove width of cannelure 2-2 equals the axial length of stator tooth 2-1 and lower stator tooth 2-3.
Just, cosine signal winding is by sinusoidal rule coiling.
Embodiment two: as shown in Figure 1 and Figure 2, harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer described in embodiment one, described rotor 1 is dimerous by being positioned at the oblique ring 1-1 being made up of permeability magnetic material on rotor 1 circumferential side wall and being positioned at the stop sleeve 1-2 being made up of non-magnet material at the oblique ring axial both ends of 1-1; Tiltedly ring 1-1 is formed by the cut sth. askew rotor 1 of drum of two parallel planes.
Embodiment three: as shown in Figure 1 and Figure 2, the harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer described in embodiment two, the material of described oblique ring 1-1 is polonium Mo alloy or soft magnetic ferrite, or is the ring-shaped silicon steel sheet of stack; The material of described stop sleeve 1-2 is aluminium alloy.Such rotor 1 structural change stator tooth 9 coupling area with rotor 1, thereby realized the cyclic variation of air-gap permeance.
Embodiment four: as shown in Figure 1, the harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer described in embodiment one, described stator 2 is overrided to form by several pieces ring-shaped silicon steel sheets.This structure can reduce the wastage effectively.
Embodiment five: as shown in Figure 1, Figure 3, harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer described in embodiment one or two or three or four, described sinusoidal signal winding 4 and cosine signal winding 5 are concentrated winding, and umber of turn is identical, and line style is identical.Ensure that resistance equates, thereby had identical performance while ensureing double winding work; Described sinusoidal signal winding 4 numbers of turn and cosine signal winding 5 numbers of turn all distribute by sinusoidal rule.This special construction can be realized high-acruracy survey.
Embodiment six: as Figure 1 and Figure 4, the harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer winding method for winding described in embodiment five,
For sinusoidal signal winding 4, choose arbitrarily axis and not crossing with stator tooth 9 plane 6 of crossing stator 2, and taking this plane 6 as benchmark, along clockwise direction 4N is divided into two groups to stator tooth 9; Start along clockwise direction first group of adjacent 2N to be wound the line in the counterclockwise direction to stator tooth 9 from plane 6, second group of adjacent 2N winds the line along clockwise direction to stator tooth 9; Described cosine signal winding 5 winding modes are identical with sinusoidal signal winding 4 winding modes, differ 90 ° of electrical degrees in phase place.
The number of turn that just, cosine signal winding is wrapped on every pair of stator tooth 9 changes by sinusoidal rule.
Embodiment seven: as Figure 1 and Figure 4, the harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer winding method for winding described in embodiment six,
For sinusoidal signal winding 4, the number of turn is distributed as
For cosine signal winding 5, the number of turn is distributed as
In formula, Z
1for the number of turn of sinusoidal signal winding 4 on a pair of stator tooth 9, Z
2be the number of turn of cosine signal winding 5 on a stator tooth 9, Z
1, Z
2value round, Z
1, Z
2during for negative value, represent reverse coiling; K
1for the amplitude of sinusoidal signal winding 4 numbers of turn of looking ahead; K
2for the amplitude of cosine signal winding 5 numbers of turn of looking ahead, K
1, K
2unit be circle; A
1for the logarithm of the sinusoidal phase stator tooth of anomaly face 6, A
2for the cosine phase stator tooth logarithm of anomaly face 6, A
1, A
2span is 0～4N.
Claims (7)
1. a harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer, comprises stator (2), rotor (1), excitation winding (8), sinusoidal signal winding (4) and cosine signal winding (5); Rotor (1) and stator (2) are drum, it is characterized in that: between stator (2) and rotor (1), there is the air gap (3) equating, stator (2) inner ring surface is processed with 4N stator elongated slot (7) and 4N the long tooth of stator vertically, 4N stator elongated slot (7) is along the uniform setting of stator (2) inner ring surface, in the middle of adjacent two stator elongated slots (7), be the described long tooth of stator, 4N stator elongated slot (7) and 4N the long tooth of stator are positioned on the same circumference of stator (2) inner ring surface; The middle part of stator (2) inner ring surface is processed with a cannelure (2-2) along the circumferential direction, and cannelure (2-2) is opened in the middle part of stator elongated slot (7) and the long tooth of stator, 4N the long tooth of stator is divided into 4N upper stator tooth (2-1) and 4N lower stator tooth (2-3) by cannelure (2-2), forms 4N to stator tooth (9) by 4N upper stator tooth (2-1) and 4N lower stator tooth (2-3); Wherein, N is natural number, and the span of N is 2～15; Excitation winding (8) is positioned in the cannelure (2-2) of stator (2), excitation winding (8) and the concentric setting of stator (2); Sinusoidal signal winding (4) sets up the two-layer 4N of being wound in separately on stator tooth (9) with cosine signal winding (5).
2. harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer according to claim 1, is characterized in that: described rotor (1) is that axially the stop sleeve of being made up of non-magnet material (1-2) at both ends is dimerous by being positioned at the oblique ring (1-1) of being made up of permeability magnetic material on rotor (1) circumferential side wall and being positioned at oblique ring (1-1); Tiltedly ring (1-1) is to be formed by the cut sth. askew rotor (1) of drum of two parallel planes.
3. harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer according to claim 2, is characterized in that: the material of described oblique ring (1-1) is polonium Mo alloy or soft magnetic ferrite, or is the ring-shaped silicon steel sheet of stack; The material of described stop sleeve (1-2) is aluminium alloy.
4. harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer according to claim 1, is characterized in that: described stator (2) is overrided to form by several pieces ring-shaped silicon steel sheets.
5. according to the harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer described in claim 1 or 2 or 3 or 4, it is characterized in that: described sinusoidal signal winding (4) and cosine signal winding (5) are concentrated winding, umber of turn is identical, and line style is identical.Ensured that resistance equates, described sinusoidal signal winding (4) number of turn and cosine signal winding (5) number of turn all distribute by sinusoidal rule.
6. a harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer winding method for winding claimed in claim 5, is characterized in that: described method is:
For sinusoidal signal winding (4), choose arbitrarily axis and not crossing with stator tooth (9) plane (6) of crossing stator (2), and taking this plane (6) as benchmark, along clockwise direction 4N is divided into two groups to stator tooth (9); Start along clockwise direction first group of adjacent 2N to be wound the line in the counterclockwise direction to stator tooth (9) from plane (6), second group of adjacent 2N winds the line along clockwise direction to stator tooth (9); Described cosine signal winding (5) winding mode is identical with sinusoidal signal winding (4) winding mode, differs 90 ° of electrical degrees in phase place.
7. harmonic wave eliminating formula axial magnetic circuit monopole rotary transformer winding method for winding according to claim 6, is characterized in that:
For sinusoidal signal winding (4), the number of turn is distributed as
For cosine signal winding (5), the number of turn is distributed as
In formula, Z
1for the number of turn of the upper sinusoidal signal winding (4) of a pair of stator tooth (9), Z
2be the number of turn of the upper cosine signal winding (5) of a stator tooth (9), Z
1, Z
2value round, Z
1, Z
2during for negative value, represent reverse coiling; K
1for the amplitude of sinusoidal signal winding (4) number of turn of looking ahead; K
2for the amplitude of cosine signal winding (5) number of turn of looking ahead, K
1, K
2unit be circle; A
1for the logarithm of the sinusoidal phase stator tooth of anomaly face (6), A
2for the cosine phase stator tooth logarithm of anomaly face (6), A
1, A
2span is 0～4N.
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| CN201410474909.0A CN104200976B (en) | 2014-09-17 | 2014-09-17 | Harmonic elimination waves axial magnetic circuit monopole rotary transformer and signal winding method for winding |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108886314A (en) * | 2016-04-15 | 2018-11-23 | 三菱电机株式会社 | Rotary transformer |
| CN112289571A (en) * | 2020-10-19 | 2021-01-29 | 哈尔滨工业大学 | Rotor linear half-wave axial magnetic circuit reluctance type rotary transformer |
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2014
- 2014-09-17 CN CN201410474909.0A patent/CN104200976B/en active Active
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108886314A (en) * | 2016-04-15 | 2018-11-23 | 三菱电机株式会社 | Rotary transformer |
| CN112289571A (en) * | 2020-10-19 | 2021-01-29 | 哈尔滨工业大学 | Rotor linear half-wave axial magnetic circuit reluctance type rotary transformer |
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| CN104200976B (en) | 2016-08-31 |
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