CN205352423U - Reluctance type one -loop absolute type photoelectric encoder - Google Patents
Reluctance type one -loop absolute type photoelectric encoder Download PDFInfo
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- CN205352423U CN205352423U CN201521023903.8U CN201521023903U CN205352423U CN 205352423 U CN205352423 U CN 205352423U CN 201521023903 U CN201521023903 U CN 201521023903U CN 205352423 U CN205352423 U CN 205352423U
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- 239000000463 material Substances 0.000 claims abstract description 6
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 4
- 230000005291 magnetic effect Effects 0.000 claims description 14
- 238000012827 research and development Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000035800 maturation Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000011218 segmentation Effects 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model relates to a reluctance type one -loop absolute type photoelectric encoder belongs to encoder passive measurement technical field. A metallic disc centre of a circle and rotation axis center eccentric mounting, this metallic disc no. 1 are ferromagnetic nature material, and a magneto resistive sensor no. 1 places the radial orientation at rotation center, and with a metallic disc coplanar, eccentric mounting is adopted with rotation center in two centres of a circle of another metallic disc, makes two metallic disc's rotation axis center 1 orthogonal, another magneto resistive sensor no. 2 with magneto resistive sensor no. 1 places in same position, and overlaps from top to bottom, corresponds a metallic disc respectively. The advantage is: novel structure, it is low to the environmental requirement, used magneto resistive sensor technology maturation, the metallic disc processing degree of difficulty is low, has also solved the problem that photoelectric encoder expected much to the machining precision in the time of reduce cost, user simple to operate requires to hang down to the motor, and expansion nature is good, can be applied to one -loop absolute type photoelectric encoder, incremental encoder.
Description
Technical field
This utility model belongs to encoder passive measurement technical field.
Background technology
Absolute type encoder has the wide market demand, therefore each producer insistent research and development absolute type encoder all the time.Absolute encoder is always up taking as the leading factor with photo-electric for a long time, there is certain angular deviation in the groove of grating disc and the groove of indication grating, after grating disc rotates, irradiates through directional light, light cell produces light and dark Morie fringe, light cell perception light intensity change output cosine and sine signal.
Shortcoming is that environmental requirement is higher, it is easy to be subject to the erosion of greasy dirt.Grating disc is glass material, it is easy to be subject to the impact of the environment such as exterior vibration, impact, and code-disc occurs broken, and needs to do encapsulation process.
Magneto-electric RESEARCH AND DEVELOPMENT OF SINGLE RING ABSOLUTE ENCODER also answers the market demand to be applied in every field simultaneously, its principle: fix a magnetic post in the axle center of rotating shaft, hall device is placed in the surface of magnetic post, magnetic post rotates in one week process, the magnetic flux direction that Hall element receives is continually changing, and exports cosine and sine signal by processing of circuit.
This mounting means is only applicable to axle head and installs, it is impossible to realizing big hollow axle and install, and the magnetic scope of magnetic post is little, the waveform sine obtained is inadequate, limits the segmentation to waveform.
Summary of the invention
This utility model relates to a kind of reluctance type RESEARCH AND DEVELOPMENT OF SINGLE RING ABSOLUTE ENCODER, with solve to exist environmental requirement is higher, be only applicable to axle head and install, it is impossible to realizing big hollow axle and install, and the magnetic scope of magnetic post is little, the waveform sine obtained is inadequate, the problem limiting the segmentation to waveform.
This utility model adopts the technical scheme that: rosette one center of circle is eccentrically mounted with rotating shaft center, this rosette one is ferromagnetic property material, one magnetoresistive transducer one is placed on the radial direction of center of rotation, and with rosette one same plane, another rosette two center of circle adopts eccentrically mounted with center of rotation, the eccentric direction making two rosettes is orthogonal, another magnetoresistive transducer two is placed on same position with described magnetoresistive transducer one, and overlapping up and down, a corresponding rosette respectively.
This utility model one embodiment is, N number of rosette center of circle adopts eccentrically mounted with center of rotation, N > 2, N is natural number, the eccentric direction of N number of rosette differs certain number of degrees, and N number of magnetoresistive transducer is placed on same position, and overlapping up and down, N number of magnetoresistive transducer is placed on the radial direction of center of rotation, respectively a corresponding rosette.
This utility model one embodiment is, rosette is made a call to an aperture at eccentric direction or adds a metal derby in eccentric opposite direction.
This utility model one embodiment is, signal processor is connected respectively with each magnetic group sensor.
The utility model has the advantages that: novel structure, environmental requirement is low: to use magnetoresistive transducer, can be used for optical-electricity encoder cannot the environment of greasy dirt of normal operation, anti-vibration, relatively photoelectric encoder failure rate is low；Magnetoresistive sensor technology used is ripe, and rosette difficulty of processing is low, also solves, while reducing cost, the problem that photoelectric encoder is high to requirement on machining accuracy；User installation is convenient: user's location and installation is convenient, precision is reliable, it is adapted for mount on bigbore hollow axle or solid shafting rear end, and do not interfere with other installation equipment of motor shaft end, motor is required low: the method can solve photoelectric encoder to problems such as axial float and circular runout sensitivities, improves the adaptability of product；Expansion is good: can apply to RESEARCH AND DEVELOPMENT OF SINGLE RING ABSOLUTE ENCODER, incremental encoder.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present utility model；
Fig. 2 is structure principle chart of the present utility model；
Fig. 3 has material reducing aperture or at reversely reinforced structural representation on this utility model rosette；
Fig. 4 is the structural representation of the N number of rosette of this utility model and N number of magnetoresistive transducer；
Fig. 5 is the structural representation of the N number of rosette of this utility model and N number of magnetoresistive transducer.
Detailed description of the invention
Rosette 1 center of circle O1 and rotating shaft 3 center O is eccentrically mounted, this rosette one is ferromagnetic property material, one magnetoresistive transducer 1 is placed on the radial direction of center of rotation, and with rosette one same plane, another rosette 21 ' center of circle O2 and center of rotation O adopt eccentrically mounted, the eccentric direction making two rosettes is orthogonal, another magnetoresistive transducer 22 ' is placed on same position with described magnetoresistive transducer one, and overlapping up and down, a corresponding rosette respectively.
This utility model one embodiment is, N number of rosette center of circle adopts eccentrically mounted with center of rotation, N > 2, N is natural number, the eccentric direction of N number of rosette differs certain number of degrees, and N number of magnetoresistive transducer is placed on same position, and overlapping up and down, N number of magnetoresistive transducer is placed on the radial direction of center of rotation, respectively a corresponding rosette.
This utility model one embodiment is, rosette is made a call to an aperture 5 at eccentric direction or adds a metal derby 6 in eccentric opposite direction.Satisfying dynamic equilibrium requirement, keeps rosette not produce centrifugal force.
This utility model one embodiment is, signal processor 4 is connected respectively with each magnetic group sensor.
Rosette 1, rosette 21 ' revolve in the process turned around, with the gap of magnetoresistive transducer in sinusoidal regular change, namely exporting signal is sine relation with rotational angle, exports the sine waves of two differences 90 degree.
The cosine and sine signal of magnetoresistive transducer output, after signal processor segments, the sine and cosine ripple in one cycle is subdivided into N part, every portion has absolute positional relation, can use as absolute type encoder, there is positioning function, it is possible to any position in measuring 360 degree, it is possible to measure local angle change.As: the joint etc. that the little scope of industrial robot rotates.
This utility model applies also for the situation of N number of rosette and N number of magnetoresistive transducer, as shown in Fig. 4, Fig. 5, i.e. and magnetoresistive transducer one, magnetoresistive transducer two ... magnetoresistive transducer N is placed on center of rotation radial direction, and overlapped.Rosette one, rosette two ... the eccentric direction of .. rosette N differs certain number of degrees, magnetoresistive transducer one, magnetoresistive transducer two ... magnetoresistive transducer N is placed on the radial direction of center of rotation, a corresponding rosette respectively, can obtaining the signal of the sine and cosine waveform of the certain phase contrast of N number of difference, N > 2, N is natural number.
Claims (4)
1. a reluctance type RESEARCH AND DEVELOPMENT OF SINGLE RING ABSOLUTE ENCODER, it is characterized in that: rosette one center of circle is eccentrically mounted with rotating shaft center, this rosette one is ferromagnetic property material, one magnetoresistive transducer one is placed on the radial direction of center of rotation, and with rosette one same plane, another rosette two center of circle adopts eccentrically mounted with center of rotation, the eccentric direction making two rosettes is orthogonal, another magnetoresistive transducer two is placed on same position with described magnetoresistive transducer one, and overlapping up and down, a corresponding rosette respectively.
2. a kind of magnetic resistance absolute type encoder according to claim 1, it is characterized in that: N number of rosette center of circle adopts eccentrically mounted with center of rotation, N > 2, N is natural number, the eccentric direction of N number of rosette differs certain number of degrees, and N number of magnetoresistive transducer is placed on same position, and overlapping up and down, N number of magnetoresistive transducer is placed on the radial direction of center of rotation, respectively a corresponding rosette.
3. a kind of magnetic resistance absolute type encoder according to claim 1, it is characterised in that: rosette is made a call to an aperture at eccentric direction or adds a metal derby in eccentric opposite direction.
4. a kind of magnetic resistance absolute type encoder according to claim 1, it is characterised in that: signal processor is connected respectively with each magnetic group sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521023903.8U CN205352423U (en) | 2015-12-11 | 2015-12-11 | Reluctance type one -loop absolute type photoelectric encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521023903.8U CN205352423U (en) | 2015-12-11 | 2015-12-11 | Reluctance type one -loop absolute type photoelectric encoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205352423U true CN205352423U (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521023903.8U Active CN205352423U (en) | 2015-12-11 | 2015-12-11 | Reluctance type one -loop absolute type photoelectric encoder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205352423U (en) |
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2015
- 2015-12-11 CN CN201521023903.8U patent/CN205352423U/en active Active
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |