CN205981091U - Miniaturized differential transformer angle sensor - Google Patents
Miniaturized differential transformer angle sensor Download PDFInfo
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- CN205981091U CN205981091U CN201620741506.2U CN201620741506U CN205981091U CN 205981091 U CN205981091 U CN 205981091U CN 201620741506 U CN201620741506 U CN 201620741506U CN 205981091 U CN205981091 U CN 205981091U
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- coil
- double wedge
- primary coil
- dogtooth
- differential transformer
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Abstract
The utility model provides a miniaturized differential transformer angle sensor, its includes the stator shell of tubbiness, fixedly connected with coil skeleton on the inner wall of stator shell, wear to be equipped with the pivot in the coil skeleton, fixed cover is equipped with the iron core in the pivot, wherein: the one end and the setting of pivot are in the first end cover of stator shell left end is connected, the other end passes the setting and is in the second end cover of stator shell right -hand member extends to the outside of stator shell, along circumference evenly arrange size and identical first dogtooth, second dogtooth, third dogtooth and the fourth dogtooth of shape on coil skeleton's the inner wall, around being equipped with primary group and secondary coil group on first dogtooth, second dogtooth, third dogtooth and the fourth dogtooth, be provided with first bellying and second bellying along the circumference symmetry on the outer wall of iron core, first bellying reaches the central angle of second bellying is 90. The utility model discloses a 45 the non -contact angular surveying of~+ 45 within ranges, it has good resistance to shock and measurement accuracy.
Description
Technical field
The utility model is related to sensor and manufactures field, especially a kind of miniaturization differential transformer type angular transducer.
Background technology
Potentiometer type angular transducer is the angular transducer commonly using at present, and such angular transducer adopts contact
Metering system, is internally provided with resistance and the brush contact being connected with resistance, and tested moving component makes brush contact occur to turn
Dynamic, so that the resistance of resistance changes, the angular surveying to tested moving component is realized by change in resistance amount.When
When the vibration of site of deployment is larger, easily loose contact in potentiometer type angular transducer brush contact of the prior art,
Thus affecting reliability and certainty of measurement.
In order to solve above-mentioned technical problem it is necessary to develop new, there is non-contact measurement mode angle sensor
Device.
Utility model content
In order to achieve the above object, the utility model provides a kind of miniaturization differential transformer type angular transducer, its
It is capable of the angle displacement measurement in the range of -45 ° to+45 °, its detailed technology scheme is as follows：
A kind of miniaturization differential transformer type angular transducer, it includes the stator casing of tubbiness, described stator casing
It is fixedly connected with coil rack on inwall, in described coil rack, is equipped with rotating shaft, fixation in described rotating shaft is arranged with iron core；Its
In：One end of described rotating shaft is connected with the first end cap being arranged on described stator casing left end；The other end is described through being arranged on
Second end cap of stator casing right-hand member simultaneously extends to the outside of described stator casing；Circumferentially equal on the inwall of described coil rack
Even be placed with size and identical first double wedge of shape, the second double wedge, the 3rd double wedge and the 4th double wedge, described first is convex
It is arranged with primary coil group and secondary coil group on tooth, the second double wedge, the 3rd double wedge and the 4th double wedge；On the outer wall of described iron core
Circumferentially it is symmetrically arranged with the first lug boss and the second lug boss, the central angle of described first lug boss and described second lug boss
It is 90 °.
Further, described first end lid is provided with clutch shaft bearing, and described second end cap is provided with second bearing, described turn
One end of axle is located on described clutch shaft bearing, and the other end of described rotating shaft passes through described second bearing and extends to described stator
The outside of shell.
Further, described stator casing is equipped with wire hole.
Further, described primary coil group and described secondary coil group are formed by insulated paint copper-clad wire coiling.
Further, described primary coil group include circumferentially being sequentially connected in series described first double wedge, the second double wedge, the 3rd
The first primary coil on double wedge and the 4th double wedge, the second primary coil, the 3rd primary coil and the 4th primary coil, described
One primary coil, the second primary coil, the 3rd primary coil and the 4th primary coil the number of turn all equal；Described secondary coil group
Including being circumferentially sequentially connected in series first level on described first double wedge, the second double wedge, the 3rd double wedge and the 4th double wedge for the reversal connection
Coil, second subprime coil, third time level coil and the 4th secondary coil, described first secondary coil, second subprime coil,
The number of turn of three secondary coils and the 4th secondary coil is all equal.
Compared with prior art, the beneficial effects of the utility model are：(1) contactless in the range of -45～45 ° of realization
Angular surveying, its vibration resistance, certainty of measurement are significantly improved；(2) its structure is simple, easy to use, low production cost.
Brief description
Fig. 1 is explosive view of the present utility model；
Fig. 2 is the structural representation of the coil rack in Fig. 1；
Fig. 3 is the structural representation of the iron core in Fig. 1；
Fig. 4 is the structural representation of the primary coil group in Fig. 1 and secondary coil group；
When Fig. 5 is 0 ° for the corner of iron core, the location diagram of iron core and coil rack；
When Fig. 6 is+45 ° for the corner of iron core, the location diagram of iron core and coil rack；
When Fig. 7 is -45 ° for the corner of iron core, the location diagram of iron core and coil rack.
Specific embodiment
For make above-mentioned purpose of the present utility model, feature and advantage, can become apparent from understandable, below in conjunction with the accompanying drawings and tool
Body embodiment is described in further detail to the utility model.
As shown in Figures 1 to 4, in a specific embodiment, miniaturization differential transformer type angle of the present utility model
Sensor includes the stator casing 1 of tubbiness, rotating shaft 2, coil rack 3 and iron core 4.
The left end of described stator casing 1 is provided with the first end cap 5, and described first end cap 5 is provided with clutch shaft bearing 7.Described fixed
The right-hand member of subshell 1 is provided with the second end cap 6, and described second end cap 6 is provided with second bearing 8.Also wear on described stator casing 1
There is wire hole (not shown), power supply source line passes through.
Described coil rack 3 is fixedly connected on the inwall of described stator casing 1.Described rotating shaft 2 is located in described stator
The inside of shell 1, its one end is located on described clutch shaft bearing 7, and the other end passes through second bearing 8 and extends to outside described stator
The outside of shell 1, for connecting tested moving component (not shown).
Described iron core 4 fixation is set in described rotating shaft 2, and described iron core 4 is located in the inner chamber of described coil rack 3, and
Coaxial with described coil rack 3.Described rotating shaft 2 can drive described iron core 4 to rotate in described coil rack 3.
As shown in Fig. 2 size and shape identical four are circumferentially uniformly placed with the inwall of described coil rack 3
Individual double wedge, the respectively first double wedge 31, the second double wedge 32, the 3rd double wedge 33 and the 4th double wedge 34.
As shown in figure 3, the first lug boss 41 and the second lug boss are circumferentially symmetrically arranged with the outer wall of described iron core 4
42.The central angle of described first lug boss 31 and described second lug boss 32 is 90 °.As shown in figure 5, initial position (iron core 4
Corner be 0 °) when, the first lug boss 41 just covers half end face of the first double wedge 31 and the second double wedge 32 (towards iron simultaneously
The end face of core 4), the second lug boss 42 just covers half end face of the 3rd double wedge 33 and the 4th double wedge 34 (towards iron core 4 simultaneously
End face).
Miniaturization differential transformer type angular transducer of the present utility model also includes primary coil group and secondary coil
Group.As shown in figure 4, described primary coil group includes circumferentially being sequentially connected in series in described first double wedge 31, the second double wedge the 32, the 3rd
The first primary coil P1 on double wedge 33 and the 4th double wedge 34, the second primary coil P2, the 3rd primary coil P3 and the 4th are primary
Coil P4, described first primary coil P1, the second primary coil P2, the number of turn of the 3rd primary coil P3 and the 4th primary coil P4
All equal.Described secondary coil group includes circumferentially being sequentially connected in series reversal connection convex in described first double wedge 31, the second double wedge the 32, the 3rd
The first secondary coil S1 on tooth 33 and the 4th double wedge 34, second subprime coil S2, third time level coil S3 and the 4th secondary wire
Circle S4, described first secondary coil S1, second subprime coil S2, third time level coil S3 and the 4th secondary coil S4 the number of turn equal
Equal.
That is, described first primary coil P1 and described first secondary coil are arranged with described first double wedge 31
S1, described second double wedge 32 is arranged with described second primary coil P2 and described second subprime coil S2, described 3rd double wedge
It is arranged with described 3rd primary coil P3 and described third time level coil S3 on 33, described 4th double wedge 34 is arranged with described
Four primary coil P4 and described 4th secondary coil S4.
The coiling initiating terminal of described primary coil group is connected with external power source, to produce pumping signal.Described secondary coil
Coiling initiating terminal be used for exporting induced potential signal.Described primary coil group and described secondary coil group are by insulated paint copper-clad
Wire coiling forms, and its making is simple, surface insulation performance is good.
As shown in Figures 5 to 7, operation principle of the present utility model：
When primary coil group turns on and obtains driving voltage Usr with external power source, the first primary coil P1, the second primary
Coil P2, the 3rd primary coil P3 and the 4th primary coil P4 produce magnetic flux Φ 1, Φ 2, Φ 3 and Φ 4, wherein Φ 1 and Φ respectively
3 direction is consistent, and Φ 2 is consistent with the direction of Φ 4.
When the tested moving component (not shown) being connected with rotating shaft 2 is rotated, iron core 4 produces in coil rack 3
Synchronous axial system, thus cause the first secondary coil S1, second subprime coil S2, third time level coil S3 and the 4th secondary coil S4
In induced potential produce respective change, finally make secondary coil group output differential output voltage Usc occur respective change.
In the present embodiment, due to described first secondary coil S1, second subprime coil S2, third time level coil S3 and the 4th
Secondary coil S4 is sequentially connected in series reversal connection, so the direction one of the induced potential of the first secondary coil S1 and tertiary coil S3 generation
Cause, second subprime coil S2 is consistent with the direction of the induced potential that described 4th secondary coil S4 produces.Differential output voltage Usc
The induced potential sum being described first secondary coil S1 and described third time level coil S3 deducts in described second subprime line
The induced potential sum of circle S2 and described 4th secondary coil S4.
It is 0 °, as a example+45 ° and -45 °, further describes operation principle of the present utility model by the corner of iron core 4 below,
Specific as follows：
As shown in figure 5, when the corner of iron core 4 is 0 ° (initial position), described first lug boss 41 covers the first double wedge
31 and second double wedge 32 end face, described second lug boss 42 covers the end face of the 3rd double wedge 33 and the 4th double wedge 34, and：The
One double wedge 31, the area equation of the second double wedge 32, the 3rd double wedge 33 and the capped end face of the 4th double wedge 34 (are half end face
Capped).Now, magnetic flux phi 1, Φ 2, Φ 3 and Φ's 4 is equal in magnitude, the first secondary coil S1, second subprime coil S2,
The size of the generation induced potential of third time level coil S3 and the 4th secondary coil S4 is also equal.Corresponding, secondary coil group is defeated
The differential output voltage Usc going out is zero.
As shown in fig. 6, when the corner of iron core 4 is+45 ° (rotating clockwise), described first double wedge 31 and the 3rd double wedge
33 end face is completely exposed, and the end face of described second double wedge 32 and the 4th double wedge 34 is raised by the first lug boss 41 and second respectively
Portion 42 is completely covered.Now, magnetic flux phi 1 and Φ 3 reach maximum, the sense of the first secondary coil S1 and third time level coil S3
Raw potential reaches maximum；Magnetic flux phi 2 and Φ 4 reach minimum of a value, the sense of second subprime coil S2 and the 4th secondary coil S4
Raw potential reaches minimum of a value.Corresponding, the differential output voltage Usc of secondary coil group output reaches positive maximum.
As shown in fig. 7, when the corner of iron core 4 is -45 ° (rotating counterclockwise), described first double wedge 31 and the 3rd double wedge
33 end face is completely covered by the first lug boss 41 and the second lug boss 42 respectively, described second double wedge 32 and the 4th double wedge 34
End face is completely exposed.Now, magnetic flux phi 1 and Φ 3 reach minimum of a value, the sense of the first secondary coil S1 and third time level coil S3
Raw potential reaches minimum of a value；Magnetic flux phi 2 and Φ 4 reach maximum, the sense of second subprime coil S2 and the 4th secondary coil S4
Raw potential reaches maximum.Corresponding, the differential output voltage Usc of secondary coil group output reaches reverse maximum.
Certainly, when other angles that the corner of iron core 4 is between -45～45 °, differential output voltage Usc also can obtain
Corresponding output valve, due to differential output voltage Usc linear with the rotational angle of iron core 4 it is possible to according to differential
The value of voltage iron core 4 calculates size and the direction of the rotational angle of iron core 4.It can be seen that, the utility model be capable of -45 ° to+
Accurate angle measurement in the range of 45 °.
Above the utility model has been carried out with the description with certain particularity detailed enough.Common in art
It is to be understood by the skilled artisans that what the description in embodiment was merely exemplary, without departing from true spirit of the present utility model and
Make all changes on the premise of scope and all should belong to protection domain of the present utility model.The utility model is required for protection
Scope is to be defined by described claims, rather than to be limited by the foregoing description in embodiment.
Claims (5)
1. a kind of miniaturization differential transformer type angular transducer it is characterised in that：It includes the stator casing of tubbiness, described fixed
It is fixedly connected with coil rack on the inwall of subshell, in described coil rack, is equipped with rotating shaft, described rotating shaft is fixed sheathed
Cored；Wherein,
One end of described rotating shaft is connected with the first end cap being arranged on described stator casing left end, and the other end is described through being arranged on
Second end cap of stator casing right-hand member simultaneously extends to the outside of described stator casing；
Size and identical first double wedge of shape, second convex are circumferentially uniformly placed with the inwall of described coil rack
Tooth, the 3rd double wedge and the 4th double wedge, described first double wedge, the second double wedge, the 3rd double wedge and the 4th double wedge are arranged with primary line
Circle group and secondary coil group；
First lug boss and the second lug boss, described first lug boss and institute are circumferentially symmetrically arranged with the outer wall of described iron core
The central angle stating the second lug boss is 90 °.
2. as claimed in claim 1 miniaturization differential transformer type angular transducer it is characterised in that：On described first end lid
It is provided with clutch shaft bearing, described second end cap is provided with second bearing, one end of described rotating shaft is located on described clutch shaft bearing, institute
The other end stating rotating shaft passes through described second bearing and extends to the outside of described stator casing.
3. as claimed in claim 1 miniaturization differential transformer type angular transducer it is characterised in that：On described stator casing
It is equipped with wire hole.
4. as claimed in claim 1 miniaturization differential transformer type angular transducer it is characterised in that：Described primary coil group
And described secondary coil group is formed by insulated paint copper-clad wire coiling.
5. as claimed in claim 1 miniaturization differential transformer type angular transducer it is characterised in that：
Described primary coil group includes circumferentially being sequentially connected in series convex in described first double wedge, the second double wedge, the 3rd double wedge and the 4th
The first primary coil on tooth, the second primary coil, the 3rd primary coil and the 4th primary coil, described first primary coil,
The number of turn of the second primary coil, the 3rd primary coil and the 4th primary coil is all equal；
Described secondary coil group includes circumferentially being sequentially connected in series reversal connection in described first double wedge, the second double wedge, the 3rd double wedge and
The first secondary coil on four double wedges, second subprime coil, third time level coil and the 4th secondary coil, described first secondary wire
Circle, second subprime coil, third time level coil and the 4th secondary coil the number of turn all equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620741506.2U CN205981091U (en) | 2016-07-14 | 2016-07-14 | Miniaturized differential transformer angle sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620741506.2U CN205981091U (en) | 2016-07-14 | 2016-07-14 | Miniaturized differential transformer angle sensor |
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| Publication Number | Publication Date |
|---|---|
| CN205981091U true CN205981091U (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620741506.2U Active CN205981091U (en) | 2016-07-14 | 2016-07-14 | Miniaturized differential transformer angle sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN205981091U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918653A (en) * | 2018-05-18 | 2018-11-30 | 哈尔滨工业大学深圳研究生院 | Ferromagnetism slender member non-destructive testing device and method |
-
2016
- 2016-07-14 CN CN201620741506.2U patent/CN205981091U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918653A (en) * | 2018-05-18 | 2018-11-30 | 哈尔滨工业大学深圳研究生院 | Ferromagnetism slender member non-destructive testing device and method |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |