CN105444792B - A kind of sinusoidal coder code-disc - Google Patents
A kind of sinusoidal coder code-disc Download PDFInfo
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- CN105444792B CN105444792B CN201510984874.XA CN201510984874A CN105444792B CN 105444792 B CN105444792 B CN 105444792B CN 201510984874 A CN201510984874 A CN 201510984874A CN 105444792 B CN105444792 B CN 105444792B
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- 239000012780 transparent material Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000002950 monocyclic group Chemical group 0.000 description 2
- 101000860173 Myxococcus xanthus C-factor Proteins 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000005329 float glass Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000005304 optical glass Substances 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000003442 weekly effect Effects 0.000 description 1
Abstract
The present invention relates to a kind of sinusoidal coder code-discs, including code-disc ontology, the code-disc ontology is equipped with the first variable code channel, the second variable code channel, third variable code channel and the 4th variable code channel being distributed from inside to outside, it is equipped with an increment code channel between the second variable code channel and third variable code channel, one group of zero signal is equipped between the increment code channel and the second variable code channel；The first variable code channel, the second variable code channel, third variable code channel, the 4th variable code channel and increment code channel arranged concentric, the phase difference between the first variable code channel, the second variable code channel, third variable code channel and the 4th variable code channel is 90 degree；It is each on the first variable code channel, the second variable code channel, third variable code channel and the 4th variable code channel that there are one single slits；The increment code channel is equipped with four group slits, and there are one single slits on the zero signal.The present invention can improve the precision of code-disc.
Description
Technical field
The present invention relates to Optical encoder fields, more particularly to a kind of sinusoidal coder code-disc.
Background technology
In encoder this technical field, it is exactly therein one to have many types, TR encoders, sinusoidal coder
Kind.Sinusoidal coder also belongs to incremental encoder, main difference is that sine wave analog signals when output signal, and
It is not digital quantity signal.Its appearance is used as the feedback detecting element of motor primarily to meet the needs of electric field.
On the basis of compared with other systems, in order to obtain when better dynamic characteristic, sinusoidal coder usually may be used.
Two kinds of the sinusoidal wavelength-division of existing sinusoidal coder output：One is the sine wave signal of multicycle incremental,
Another kind is monocyclic position type sine wave signals.The often circle of multicycle incremental sine wave is the grid line sine wave in n periods,
In the same grid line code channel of round dynamic grating outmost turns, read conversion is the increasing of multicycle for two-way sine wave signal A and B sampling
Measure signal.A and B is that two frequencies are equal, and phase difference is the sine wave signal of T/4, can be used for measuring the increment size of circumference, can be with
As velocity measuring and angle detecting；Monocyclic position type sine wave often encloses the grid line sine wave for a cycle, monocycle
Position type C and D signal when a cycle weekly sine wave signal, C signal and D signal phase differences T/4, C, D two paths of signals
Position signal is formed, C, D signal can be used for measuring the absolute value parameters such as turned position, the angle value of rotary shaft, while can also
Measure the direction of rotation.But can not meet the needs of some high-precision industries in the precision of existing sinusoidal coder.
Invention content
Technical problem to be solved by the invention is to provide a kind of sinusoidal coder code-discs, can improve the essence of code-disc
Degree.
The technical solution adopted by the present invention to solve the technical problems is：A kind of sinusoidal coder code-disc is provided, including
Code-disc ontology, the code-disc ontology are equipped with the first variable code channel, the second variable code channel, the third variable code being distributed from inside to outside
Road and the 4th variable code channel are equipped with an increment code channel, the increment between the second variable code channel and third variable code channel
One group of zero signal is equipped between code channel and the second variable code channel；The first variable code channel, the second variable code channel, third variable
Code channel, the 4th variable code channel and increment code channel arranged concentric, the first variable code channel, the second variable code channel, third variable code
Phase difference between road and the 4th variable code channel is 90 degree；The first variable code channel, the second variable code channel, third variable code
It is each on road and the 4th variable code channel that there are one single slits；The increment code channel is equipped with four group slits, on the zero signal
There are one single slits.
The thang-kng seam of the list slit is equal with the thang-kng slit width degree of grating.
The thang-kng seam of group's slit is equal with the thang-kng slit width degree of grating.
The thang-kng seam quantity of group's slit is odd number.
The code-disc ontology is made of transparent material.
Advantageous effect
Due to the adoption of the above technical solution, compared with prior art, the present invention having the following advantages that and actively imitating
Fruit：The increment code channel of the present invention is equipped with four group cracks, is read using group's crack, due to the area of photoelectric apparatus
More than one sector, to reduce short-term error.The present invention utilizes four variable code channels, and the phase of four variable code channels
Difference is 90 degree, to reduce error between circle.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Specific implementation mode
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, people in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
Embodiments of the present invention are related to a kind of sinusoidal coder code-disc, as shown in Figure 1, include code-disc ontology, it is described
Code-disc ontology is equipped with the first variable code channel B1 being distributed from inside to outside, the second variable code channel B2, third variable code channel B3 and the
An increment code channel C, the increment are equipped between four variable code channel B4, the second variable code channel B2 and third variable code channel B3
One group of zero signal Z is equipped between code channel C and the second variable code channel B2；The first variable code channel B1, the second variable code channel B2,
Third variable code channel B3, the 4th variable code channel B4 and increment code channel C arranged concentrics, the first variable code channel B1, the second variable
Phase difference between code channel B2, third variable code channel B3 and the 4th variable code channel B4 is 90 degree；The first variable code channel B1,
It is each on second variable code channel B2, third variable code channel B3 and the 4th variable code channel B4 that there are one single slits；On the increment code channel C
Equipped with four group slits, there are one single slits on the zero signal Z.
According to rotation curve it can be found that although the variation for haggling over level and photosignal amplitude can make the position of transfer point
It changes, still, if transition region is made to become smaller, the variable quantity of position of conversion point will be reduced.That is, when transfer point connects
When nearly zero, the position of transfer point is also just constant.If transfer point is close to zero, that is, the thang-kng seam of single slit
Just close to zero, but if the thang-kng of single slit, which sews up, is bordering on zero, at this moment just there is no photosignal, therefore yet yet
Select the thang-kng seam value of single slit appropriate critically important.Therefore, the thang-kng seam and grating of single slit described in present embodiment
Thang-kng slit width degree is equal.
The effect of group's slit and list slit are identical, relatively high or when code-disc radius is smaller in some digits,
Even if very faint if even if the thang-kng seam value of single slit is reached the photosignal amplitude obtained to greatest extent, it is further added by thang-kng
The width of seam does not allow, therefore only could improve the amplitude of photosignal, this use by increasing the number of thang-kng seam
The slit that several thang-kngs seam is combined into one group is referred to as group slit.The amplitude of photosignal can be increased using group's slit, gone back
The scoring errors of a part can be averaged out.Therefore, the thang-kng seam of group's slit described in present embodiment and the thang-kng of grating are stitched
Width is equal, and the thang-kng seam quantity of group's slit is odd number.
Code-disc is made of transparent material in present embodiment, such as optical glass, float glass, organic glass, plate-making glue
Piece, transparent material etc..These materials need to reach striped degree 3B, bubble degree 3C in general, and roughness is V grades.
It is not difficult to find that the increment code channel of the present invention is equipped with four group cracks, read using group's crack, due to photoelectricity
The area of receiving element is more than a sector, to reduce short-term error.The present invention utilizes four variable code channels, and four
Variable code channel is 90 degree, to reduce error between circle.
Claims (3)
1. a kind of sinusoidal coder code-disc, including code-disc ontology, which is characterized in that the code-disc ontology is equipped with from inside to outside
Distribution the first variable code channel, the second variable code channel, third variable code channel and the 4th variable code channel, the second variable code channel and
It is equipped with an increment code channel between third variable code channel, one group of zero-bit is equipped between the increment code channel and the second variable code channel and is believed
Number；The first variable code channel, the second variable code channel, third variable code channel, the 4th variable code channel and increment code channel arranged concentric,
Phase difference between the first variable code channel, the second variable code channel, third variable code channel and the 4th variable code channel is 90 degree；
It is each on the first variable code channel, the second variable code channel, third variable code channel and the 4th variable code channel that there are one single slits；It is described
Increment code channel is equipped with four group slits, and there are one single slits on the zero signal；The thang-kng of group's slit is stitched and grating
Thang-kng slit width degree it is equal；The thang-kng seam quantity of group's slit is odd number.
2. sinusoidal coder code-disc according to claim 1, which is characterized in that the thang-kng seam and grating of the list slit
Thang-kng slit width degree it is equal.
3. sinusoidal coder code-disc according to claim 1, which is characterized in that the code-disc ontology uses transparent material
It is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510984874.XA CN105444792B (en) | 2015-12-23 | A kind of sinusoidal coder code-disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510984874.XA CN105444792B (en) | 2015-12-23 | A kind of sinusoidal coder code-disc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105444792A CN105444792A (en) | 2016-03-30 |
| CN105444792B true CN105444792B (en) | 2018-08-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 315800 Zhejiang city of Ningbo province Beilun Daqi Longtan Road No. 51, building 1, No. 1 Applicant after: Ningbo microscience Au Optronics Co Address before: 315800 Zhejiang city of Ningbo province Beilun Daqi Longtan Road No. 51, building 1, No. 1 Applicant before: Ningbo Weco Elevator-Optical Co., Ltd. |
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| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 315800 No.1, building 1, 88 daqihulin Road, Beilun District, Ningbo City, Zhejiang Province Patentee after: NINGBO WECO OPTOELECTRONICS Co.,Ltd. Address before: 315800 No.1, building 1, No.51 Longtanshan Road, Daqi, Beilun District, Ningbo City, Zhejiang Province Patentee before: NINGBO WECO OPTOELECTRONICS Co.,Ltd. |