CN204085447U - A kind of angular transducer based on parallel magnetic field - Google Patents
A kind of angular transducer based on parallel magnetic field Download PDFInfo
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- CN204085447U CN204085447U CN201420540948.1U CN201420540948U CN204085447U CN 204085447 U CN204085447 U CN 204085447U CN 201420540948 U CN201420540948 U CN 201420540948U CN 204085447 U CN204085447 U CN 204085447U
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- magnetic field
- permanent magnet
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Abstract
The utility model proposes a kind of angular transducer based on parallel magnetic field, the parallel magnetic field comprising permanent magnet and be made up of permanent magnetism, permanent magnet is fixed on turning axle end, permanent magnet and and the parallel magnetic field that is made up of permanent magnetism rotate with rotating shaft, the magnetic line of force of parallel magnetic field is perpendicular to turning axle; For measuring two sensors of this parallel magnetic field magnetic field intensity, the magnetic line of force direction in the magnetic field of these two sensor measurements is mutually vertical, and these two sensors are fixed on non-rotating side, do not rotate with rotating shaft.Parallel magnetic field rotates with rotating shaft, determines the anglec of rotation of parallel magnetic field, thus obtain the angle of rotating shaft by measuring parallel magnetic field two orthogonal components.
Description
Technical field
The present invention relates to a kind of angular transducer, particularly a kind of angular transducer adopting permanent magnetism parallel magnetic field to carry out measurement of angle.
Background technology
In recent years, the application of permagnetic synchronous motor is more and more extensive, the application particularly in electric automobile field.In the application of electric motor car, the angle control precision of permagnetic synchronous motor requires much lower compared to servo-control system, but much higher to the requirement of cost.Rotor angle sensor conventional in servo-control system is photoelectric code disk and rotary transformer, but both costs are all higher.The present invention adopts the mode measuring parallel magnetic field angle to take measurement of an angle, and greatly reduces cost.
Summary of the invention
1) technical matters solved
For reducing the cost of permagnetic synchronous motor angular transducer further, the present invention devises a kind of linear magnetic encoding angle sensor.
2) technical scheme
The present invention proposes a kind of angular transducer based on parallel magnetic field, its ultimate principle utilizes permanent magnet to construct a parallel magnetic field, this parallel magnetic field rotates with rotating shaft, determine the anglec of rotation of parallel magnetic field by measuring parallel magnetic field two orthogonal components, thus obtain the angle of rotating shaft.
The parallel magnetic field that its structure comprises permanent magnet and is made up of permanent magnetism, permanent magnet is fixed on turning axle end, permanent magnet and and the parallel magnetic field that is made up of permanent magnetism rotate with rotating shaft, the magnetic line of force of parallel magnetic field is perpendicular to turning axle; For measuring two sensors of this parallel magnetic field magnetic field intensity, the magnetic line of force direction in the magnetic field of these two sensor measurements is mutually vertical, and these two sensors are fixed on non-rotating side, do not rotate with rotating shaft.Be Hall effect element for measuring two sensors of this parallel magnetic field magnetic field intensity, these two Hall effect elements are welded in a printed circuit board.Be Hall effect element for measuring two sensors of this parallel magnetic field magnetic field intensity, adopt the mould that a non-magnet material makes, two Hall effect elements by Hall effect element cover inside, are fixed, and are kept two Hall effect elements mutually vertical by this mould.Two sensors for measuring this parallel magnetic field magnetic field intensity abut against together.Parallel magnetic field is formed by two parts permanent magnet, and the magnetic line of force of parallel magnetic field from a part of permanent magnet out, enters another permanent magnet, and this two parts permanent magnet is parallel to each other.For ensureing the homogeneity of convenience and the parallel magnetic field processed further, also can design like this: parallel magnetic field is formed by two parts permanent magnet, the parallel placement of two parts permanent magnet, parallel magnetic field is between two parts permanent magnet, and inside two parts permanent magnet, respectively have a slice magnetic conduction sheet to be close to two parts permanent magnet place, the magnetic line of force of parallel magnetic field from a part of permanent magnet out, through magnetic conduction sheet, enter air gap, through another sheet magnetic conduction sheet, enter another permanent magnet.In order to permanent magnet and parallel magnetic field be fixed, permanent magnet is positioned in the parts that a non-magnet material makes, and permanent magnet is fixed by these parts, form an entirety, and entirety is fixed on the end in turning axle, rotates with turning axle.The parts of fixing permanent magnetism have two grooves, and two parts permanent magnet inserts in groove respectively.Adopt and gluing permanent magnet to be fixed in groove.Permanent magnet is Ferrite Material.
3) beneficial effect
Adopt parallel magnetic field and Hall element to carry out measurement of angle in the present invention, significantly reduce cost, and precision is higher.
Accompanying drawing explanation
Fig. 1: 1-parallel magnetic field, 2-part permanent magnet, 3-another part permanent magnet, 4-magnetic field strength transducer, 5-magnetic field strength transducer.Fig. 2: 4-Hall effect element, 5-Hall effect element, 6-printed circuit board (PCB).
Fig. 3: 4-Hall effect element, 5-Hall effect element, 6-printed circuit board (PCB), 12-fixes the mould of Hall element.
Fig. 4: 7-magnetic conduction sheet, 8-magnetic conduction sheet, the parts of 9-fixed permanent magnet.
The parts of Fig. 5: 9-fixed permanent magnet, 10-groove, 11-groove.
Embodiment
The present invention proposes a kind of angular transducer based on parallel magnetic field, the parallel magnetic field 1 comprising permanent magnet 2,3 and be made up of permanent magnetism, permanent magnet 2,3 is fixed on turning axle end, permanent magnet 2,3 and and the parallel magnetic field 1 that is made up of permanent magnetism rotate with rotating shaft, the magnetic line of force of parallel magnetic field 1 is perpendicular to turning axle; For measuring two sensors 4,5 of this parallel magnetic field 1 magnetic field intensity, the magnetic line of force direction in the magnetic field that these two sensors 4,5 are measured is mutually vertical, and these two sensors 4,5 are fixed on non-rotating side, do not rotate with rotating shaft.For measuring two sensors 4,5 of this parallel magnetic field 1 magnetic field intensity for Hall effect element, these two Hall effect elements 4,5 are welded in a printed circuit board 6.For measuring two sensors 4,5 of this parallel magnetic field 1 magnetic field intensity for Hall effect element, adopt the mould 12 that a non-magnet material makes, Hall effect element 4,5 overlaps inside by this mould 12, two Hall effect elements 4,5 are fixed, and keeps two Hall effect elements 4,5 mutually vertical.Two sensors 4,5 for measuring this parallel magnetic field 1 magnetic field intensity abut against together.Parallel magnetic field 1 is formed by two parts permanent magnet 2,3, and the magnetic line of force of parallel magnetic field 1 from a part of permanent magnet 2 out, enters another permanent magnet 3, and this two parts permanent magnet 2,3 is parallel to each other.For ensureing the homogeneity of convenience and the parallel magnetic field 1 processed further, also can design like this: parallel magnetic field 1 is formed by two parts permanent magnet 2,3, the parallel placement of two parts permanent magnet 2,3, parallel magnetic field 1 is between two parts permanent magnet 2,3, inside two parts permanent magnet 2,3, respectively have a slice magnetic conduction sheet 7,8 to be close to two parts permanent magnet 2,3 place, the magnetic line of force of parallel magnetic field 1 from a part of permanent magnet 2 out, through magnetic conduction sheet 8, enter air gap, through another sheet magnetic conduction sheet 7, enter another permanent magnet 3.In order to permanent magnet 2,3 and parallel magnetic field 1 are fixed, be positioned over by permanent magnet 2,3 in the parts 9 that a non-magnet material makes, permanent magnet 2,3 is fixed by these parts 9, forms an entirety, and entirety is fixed on the end in turning axle, rotates with turning axle.The parts 9 of fixing permanent magnetism have two grooves 10,11, and two parts permanent magnet 2,3 inserts in groove 10,11 respectively.Adopt and gluing permanent magnet 2,3 to be fixed in groove 10,11.Permanent magnet 2,3 is Ferrite Material.
Claims (10)
1. the angular transducer based on parallel magnetic field, it is characterized in that, the parallel magnetic field comprising permanent magnet and be made up of permanent magnetism, permanent magnet is fixed on turning axle end, permanent magnet and and the parallel magnetic field that is made up of permanent magnetism rotate with rotating shaft, the magnetic line of force of parallel magnetic field is perpendicular to turning axle; For measuring two sensors of this parallel magnetic field magnetic field intensity, the magnetic line of force direction in the magnetic field of these two sensor measurements is mutually vertical, and these two sensors are fixed on non-rotating side, do not rotate with rotating shaft.
2. a kind of angular transducer based on parallel magnetic field as claimed in claim 1, it is characterized in that, be Hall effect element for measuring two sensors of this parallel magnetic field magnetic field intensity, and these two Hall effect elements are welded in a printed circuit board.
3. a kind of angular transducer based on parallel magnetic field as claimed in claim 1, it is characterized in that, be Hall effect element for measuring two sensors of this parallel magnetic field magnetic field intensity, adopt the mould that a non-magnet material makes, this mould by Hall effect element cover inside, two Hall effect elements are fixed, and keeps two Hall effect elements mutually vertical.
4. a kind of angular transducer based on parallel magnetic field as claimed in claim 1, is characterized in that, abut against together for two sensors measuring this parallel magnetic field magnetic field intensity.
5. a kind of angular transducer based on parallel magnetic field as claimed in claim 1, it is characterized in that, parallel magnetic field is formed by two parts permanent magnet, and the magnetic line of force of parallel magnetic field from a part of permanent magnet out, enter another permanent magnet, this two parts permanent magnet is parallel to each other.
6. a kind of angular transducer based on parallel magnetic field as claimed in claim 1, it is characterized in that, parallel magnetic field is formed by two parts permanent magnet, the parallel placement of two parts permanent magnet, and parallel magnetic field is between two parts permanent magnet, inside two parts permanent magnet, respectively have a slice magnetic conduction sheet to be close to two parts permanent magnet place, the magnetic line of force of parallel magnetic field from a part of permanent magnet out, through magnetic conduction sheet, enters air gap, through another sheet magnetic conduction sheet, enter another permanent magnet.
7. a kind of angular transducer based on parallel magnetic field as claimed in claim 1, is characterized in that, permanent magnet is positioned in the parts that a non-magnet material makes, permanent magnet is fixed by these parts, form an entirety, and entirety is fixed on the end in turning axle, rotates with turning axle.
8. a kind of angular transducer based on parallel magnetic field as claimed in claim 7, is characterized in that, the parts of fixing permanent magnetism have two grooves, and two parts permanent magnet inserts in groove respectively.
9. a kind of angular transducer based on parallel magnetic field as claimed in claim 8, is characterized in that, adopts gluingly to be fixed in groove by permanent magnet.
10. a kind of angular transducer based on parallel magnetic field as claimed in claim 1, it is characterized in that, permanent magnet is Ferrite Material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420540948.1U CN204085447U (en) | 2014-09-21 | 2014-09-21 | A kind of angular transducer based on parallel magnetic field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420540948.1U CN204085447U (en) | 2014-09-21 | 2014-09-21 | A kind of angular transducer based on parallel magnetic field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204085447U true CN204085447U (en) | 2015-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420540948.1U Active CN204085447U (en) | 2014-09-21 | 2014-09-21 | A kind of angular transducer based on parallel magnetic field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204085447U (en) |
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2014
- 2014-09-21 CN CN201420540948.1U patent/CN204085447U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Nanjing Dun En Electric Applicance Co., Ltd Assignor: Liao Qixin Contract record no.: 2016320000177 Denomination of utility model: Angle sensor based on parallel magnetic field Granted publication date: 20150107 License type: Exclusive License Record date: 20160712 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model |