CN203422059U - Linear permanent magnetic angle measuring apparatus - Google Patents
Linear permanent magnetic angle measuring apparatus Download PDFInfo
- Publication number
- CN203422059U CN203422059U CN201320459279.0U CN201320459279U CN203422059U CN 203422059 U CN203422059 U CN 203422059U CN 201320459279 U CN201320459279 U CN 201320459279U CN 203422059 U CN203422059 U CN 203422059U
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- Prior art keywords
- linear
- magnetic field
- permanent magnet
- field ionization
- rotating shaft
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- Expired - Lifetime
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The utility model provides a linear permanent magnetic angle measuring apparatus. The apparatus comprises a permanent magnet and also comprises two linear magnetic field intensity measuring parts. The permanent magnet is fixed on the rotating shaft of a rotation object to be measured and rotates with the rotation object to be measured; the central axis of the permanent magnet is superposed with the rotating shaft of the rotation object to be measured; the magnetizing direction of the permanent magnet is vertical to the rotating shaft of the rotation object to be measured; the two linear magnetic field intensity measuring parts are fixed to non-rotary parts and are arranged near to the central axis of the permanent magnet for measuring the magnetic field formed by the permanent magnet; and the magnetic field measuring directions of the two linear magnetic field intensity measuring parts are mutually vertical and are both vertical to the rotating shaft of the rotation object to be measured.
Description
Technical field
The present invention relates to a kind of angular transducer, particularly a kind of angular transducer that adopts permanent magnetic field and linear hall-effect device to carry out measurement of angle.
Background technology
In recent years, the application of permagnetic synchronous motor is more and more extensive, particularly the application in electric automobile field.In the application of electric motor car, the angle control precision of permagnetic synchronous motor requires much lower than servo-control system, but much higher to the requirement of cost.In servo-control system, conventional rotor angle sensor is photoelectric code disk and rotary transformer, but both costs are all higher.The present invention adopts the mode of linear magnetic coding to take measurement of an angle, and has significantly reduced cost.
Summary of the invention
1) technical matters solving
For further reducing the cost of permagnetic synchronous motor angular transducer, the present invention has designed a kind of linear magnetic encoding angle sensor.
2) technical scheme
The present invention proposes a kind of linear permanent magnetism angle measurement unit, comprise a permanent magnet, this permanent magnet is fixed in the rotating shaft of tested gig, and with tested gig rotation, permanent magnet central shaft overlaps with the rotating shaft of tested gig; The magnetizing direction of this permanent magnet is vertical with the rotating shaft of tested gig; Also comprise two linear magnetic field ionization meter parts, these two linear magnetic field ionization meter parts are fixed on on-rotatably moving part, are arranged near permanent magnet central shaft, measure the magnetic field that permanent magnet forms; The magnetic direction that these two linear magnetic field ionization meter parts are measured is mutually vertical; The magnetic direction that these two linear magnetic field ionization meter parts are measured is all vertical with the rotating shaft of tested gig.This permanent magnet is cylindric, and there is a circular pit end of tested gig rotating shaft, and one end of permanent magnet cylinder embeds this pit; Between permanent magnet and the rotating shaft of tested gig, by gluing, be fixed, or pass through non-magnetic screw fastening between permanent magnet and the rotating shaft of tested gig; Two linear magnetic field ionization meter parts are installed in a printed circuit board; Two linear magnetic field ionization meter parts are 90 degree to be installed, and one end of linear magnetic field ionization meter parts nestles up another linear magnetic field ionization meter parts; The slotted eye that has many arcs on the printed circuit board (PCB) of two linear magnetic field ionization meter parts is housed, and screw is fixed to printed circuit board (PCB) on on-rotatably moving part by slotted eye, and when screw is unscrewed, circuit board can regulate the angle with on-rotatably moving part along slotted eye; The output signal of two linear magnetic field ionization meter parts is drawn by a shielding line; Permanent magnet is Ferrite Material or NdFeB material; Two linear magnetic field ionization meter parts are linear hall element.
3) beneficial effect
In the present invention, adopt linear Hall and permanent magnet to measure angle of rotor, significantly reduced cost.
Accompanying drawing explanation
1-rotating shaft, 2-pit, 3-permanent magnet, 4-printed circuit board (PCB), two linear magnetic field ionization meter parts of 5-, 6-slotted eye, 7-magnetic field of permanent magnet.Fig. 1 is the rotating shaft schematic diagram that has pit, and Fig. 2 is for installing the rotating shaft after permanent magnet, and Fig. 3 is the printed circuit board (PCB) with two each and every one linear magnetic field ionization meter parts, and Fig. 4 is angular transducer instrumentation plan.
Embodiment
The present invention proposes a kind of linear permanent magnetism angle measurement unit, comprise a permanent magnet 3, this permanent magnet 3 is fixed in the rotating shaft 1 of tested gig, and with tested gig rotation, permanent magnet 3 central shafts overlap with the rotating shaft 1 of tested gig; The magnetizing direction of this permanent magnet 3 is vertical with the rotating shaft of tested gig; Also comprise two linear magnetic field ionization meter parts 5, these two linear magnetic field ionization meter parts 5 are fixed on on-rotatably moving part, are arranged near permanent magnet 3 central shafts, measure the magnetic field 7 that permanent magnet 3 forms; The magnetic direction that these two linear magnetic field ionization meter parts 5 are measured is mutually vertical; The magnetic direction that these two linear magnetic field ionization meter parts 5 are measured is all vertical with the rotating shaft of tested gig.This permanent magnet 3 is cylindric, and there is a circular pit 2 end of tested gig rotating shaft 1, and one end of permanent magnet 3 cylinders embeds this pit 2; Between the rotating shaft 1 of permanent magnet 3 and tested gig, by gluing, be fixed, or pass through non-magnetic screw fastening between permanent magnet and the rotating shaft of tested gig; Two linear magnetic field ionization meter parts 5 are installed in a printed circuit board 4; Two linear magnetic field ionization meter parts 5 are 90 degree to be installed, and one end of linear magnetic field ionization meter parts nestles up another linear magnetic field ionization meter parts; The slotted eye 6 that has many arcs on the printed circuit board (PCB) 4 of two linear magnetic field ionization meter parts 5 is housed, and screw is fixed to printed circuit board (PCB) 4 on on-rotatably moving part by slotted eye 6, and when screw is unscrewed, circuit board can regulate the angle with on-rotatably moving part along slotted eye; The output signal of two linear magnetic field ionization meter parts 5 is drawn by a shielding line; Permanent magnet 3 is Ferrite Material or NdFeB material; Two linear magnetic field ionization meter parts 5 are linear hall element.
Claims (10)
1. a linear permanent magnetism angle measurement unit, is characterized in that, comprises a permanent magnet, and this permanent magnet is fixed in the rotating shaft of tested gig, and with tested gig rotation, permanent magnet central shaft overlaps with the rotating shaft of tested gig; The magnetizing direction of this permanent magnet is vertical with the rotating shaft of tested gig; Also comprise two linear magnetic field ionization meter parts, these two linear magnetic field ionization meter parts are fixed on on-rotatably moving part, are arranged near permanent magnet central shaft; The magnetic direction that these two linear magnetic field ionization meter parts are measured is mutually vertical; The magnetic direction that these two linear magnetic field ionization meter parts are measured is all vertical with the rotating shaft of tested gig.
2. a kind of linear permanent magnetism angle measurement unit as claimed in claim 1, is characterized in that, this permanent magnet is cylindric, and there is a circular pit end of tested gig rotating shaft, and one end of permanent magnet cylinder embeds this pit.
3. a kind of linear permanent magnetism angle measurement unit as claimed in claim 1, is characterized in that, between permanent magnet and the rotating shaft of tested gig, by gluing, is fixed.
4. a kind of linear permanent magnetism angle measurement unit as claimed in claim 1, is characterized in that, passes through non-magnetic screw fastening between permanent magnet and the rotating shaft of tested gig.
5. a kind of linear permanent magnetism angle measurement unit as claimed in claim 1, is characterized in that, two linear magnetic field ionization meter parts are installed in a printed circuit board.
6. a kind of linear permanent magnetism angle measurement unit as claimed in claim 1, is characterized in that, two linear magnetic field ionization meter parts are 90 degree to be installed, and one end of linear magnetic field ionization meter parts nestles up another linear magnetic field ionization meter parts.
7. a kind of linear permanent magnetism angle measurement unit as claimed in claim 1, it is characterized in that, the slotted eye that has many arcs on the printed circuit board (PCB) of two linear magnetic field ionization meter parts is housed, screw is fixed to printed circuit board (PCB) on on-rotatably moving part by slotted eye, when screw is unscrewed, circuit board can be along the angle of slotted eye adjusting and on-rotatably moving part.
8. a kind of linear permanent magnetism angle measurement unit as claimed in claim 1, is characterized in that the output signal of two linear magnetic field ionization meter parts is drawn by a shielding line.
9. a kind of linear permanent magnetism angle measurement unit as claimed in claim 1, is characterized in that permanent magnet is Ferrite Material.
10. a kind of linear permanent magnetism angle measurement unit as claimed in claim 1, is characterized in that two linear magnetic field ionization meter parts are linear hall element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320459279.0U CN203422059U (en) | 2013-07-31 | 2013-07-31 | Linear permanent magnetic angle measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320459279.0U CN203422059U (en) | 2013-07-31 | 2013-07-31 | Linear permanent magnetic angle measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203422059U true CN203422059U (en) | 2014-02-05 |
Family
ID=50021154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320459279.0U Expired - Lifetime CN203422059U (en) | 2013-07-31 | 2013-07-31 | Linear permanent magnetic angle measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203422059U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114270144A (en) * | 2019-09-05 | 2022-04-01 | 弗瑞柏私人有限公司 | Rotation angle measuring device, rotation angle measuring system, and motor |
-
2013
- 2013-07-31 CN CN201320459279.0U patent/CN203422059U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114270144A (en) * | 2019-09-05 | 2022-04-01 | 弗瑞柏私人有限公司 | Rotation angle measuring device, rotation angle measuring system, and motor |
| CN114270144B (en) * | 2019-09-05 | 2024-02-23 | 弗瑞柏私人有限公司 | Rotation angle measuring device, rotation angle measuring system and motor |
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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 DETOCN ELECTRIC CO.,LTD. Assignor: Liao Qixin Contract record no.: 2016320000177 Denomination of utility model: Linear permanent magnetic angle measuring apparatus Granted publication date: 20140205 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 | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140205 |