CN1542532A - Hollow shaft absolute type matrix encoder possessing 13 bits code output - Google Patents
Hollow shaft absolute type matrix encoder possessing 13 bits code output Download PDFInfo
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- CN1542532A CN1542532A CNA031276571A CN03127657A CN1542532A CN 1542532 A CN1542532 A CN 1542532A CN A031276571 A CNA031276571 A CN A031276571A CN 03127657 A CN03127657 A CN 03127657A CN 1542532 A CN1542532 A CN 1542532A
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Abstract
The present invention is 13 bit output hollow shaft absolute matrix coder, and belongs to the field of angular displacement and angular speed measurement in photoelectronic measuring technology. The present invention includes shafting, photoelectronic reading system, casing and outer mechanical connecting part. The shafting has hollow main shaft, the photoelectronic reading system has coding disc and slit disc in three coding circle-three slit circle structure. The coding disc and the slit disc are installed on one main shaft coaxially and parallelly with some interval in between. When the hollow main shaft rotates the coding disc, the coding disc produces relative displacement relatively to the slit disc, and in transmitting area, the receiver receives high level signal to output code. Compared with similar coder, the present invention has three order of magnitude higher angular resolution, smaller size and wider application range.
Description
One, technical field: the invention belongs to the angular displacement, the angular velocity that relate in the photoelectricity test technical field and test the tubular shaft absolute matrix scrambler that has thirteen bits output with a kind of.
Two, technical background: the absolute matrix scrambler belongs to a type of optical electric axial angle encoder, it is the representational optoelectronic sensor of angular displacement, angular velocity measurement, along with industrialization and high-tech development and needs,, more and more urgent to the requirement of absolute matrix scrambler miniaturization.Requirement to the miniaturization of absolute matrix scrambler, the most direct solution is exactly to dwindle the radial dimension of code-disc and slit plate, after the radial dimension of code-disc and slit plate dwindles, the number of turns of delineation will reduce, this can directly have influence on the reduction of angle resolution, yet, under the situation that the radial dimension of code-disc and slit plate dwindles, to the design of code-disc code channel with to the design of the slit layout of slit plate and to the structural design at some position of scrambler, take design measure cleverly also can further improve the output figure place of scrambler, and then improve angle resolution.
The prior art the most approaching with the present invention, be the Matrix Photoelectric Rotary Encoder (" optical-mechanical " periodical the 5th phase P65～P70 page or leaf Cao Zhen husband work that the Changchun ray machine is edited) developed of Changchun Institute of Optics, Fine Mechanics and Physics, CAS as shown in Figure 1: by axle system, photoelectric translating system, housing and externally mechanical connecting element form.Axle system comprises main shaft 7, axle sleeve 8, bearing 9; Photoelectric translating system comprises that receiving element 1, electro-optical system support 2, slit plate 3, screw 4, code-disc 5, spacer ring 6, light-emitting component 11, housing and external mechanical connecting element comprise screw 10, ring flange 12, housing 13.This Matrix Photoelectric Rotary Encoder can only be exported 8 bit codes, and angle resolution only reaches 1.40625 °.The minimum profile radial dimension of scrambler can only be accomplished φ 65mm, and these parameters are indicating that this scrambler angle resolution is low, the profile radial dimension is bigger than normal, are subjected to certain restriction on range of application.
Three, summary of the invention: in order to overcome the shortcoming that prior art exists, the objective of the invention is to dwindle the profile radial dimension of scrambler, the angle resolution of raising scrambler, enlarge the application and the scope of application of scrambler, a kind of tubular shaft absolute matrix scrambler of ad hoc meter with thirteen bits output.
The technical problem to be solved in the present invention is: a kind of tubular shaft absolute matrix scrambler with thirteen bits output is provided.The technical scheme of technical solution problem is as shown in Figure 2: comprise a system, photoelectric translating system, housing and external mechanical connecting element.
Axle system comprises: hollow spindle 15, axle sleeve 22, bearing 24; Photoelectric translating system comprises receiving element 14, electro-optical system support 16, screw 18, spacer ring 19, slit plate 20, code-disc 21, light-emitting component 26; Housing and external mechanical connecting element comprise: housing 17, screw 23, ring flange 25.
The structure of the one-piece construction of this scrambler and traditional absolute matrix scrambler, do not have special difference, maximum characteristics are that code-wheel adopts three circle channel and slit to be complementary to export thirteen bits and main shaft employing hollow shaft structure can dwindle the radial dimension of scrambler.
The one-piece construction of this scrambler is: with hollow spindle 15 is the center, bearing 24 is sleeved on the hollow spindle 15, the outside suit of bearing 24 axle sleeve 22,24 rollings contact by bearing between the three, the face of code-disc 21 is vertical with hollow spindle 15 axial lines, be installed on the shoulder of hollow spindle 15, rotate with hollow spindle 15, slit plate 20 is contained in the interior circle of electro-optical system support 16 following boss, both are connected, hollow spindle 15 passes the center pit of electro-optical system support 16, both are contactless, be contained in face and the maintenance certain clearance parallel of the slit plate 20 in the interior circle of boss below the electro-optical system support 16 with the face of code-disc 21, when hollow spindle 15 drive code-discs clockwise rotate, produce relative angular displacement between code-disc and the slit plate, be spacer ring 19 between electro-optical system support 16 and the axle sleeve 22, can regulate the size in gap between code-disc 21 and the slit plate 20, electro-optical system support 16, spacer ring 19, axle sleeve 22 threes are fixing by screw 18, light-emitting component 26 is contained in the hole of axle sleeve 22, this hole is positioned at the shoulder outside of hollow spindle 15, below the transparent zone of code-disc 21, receiving element 14 is contained in the hole of electro-optical system support 16, this hole be positioned at slit plate 20 transparent zones above, light-emitting component 26 and receiving element 14 equidistant relative installation on the radial dimension of scrambler, the center pit of ring flange 25 is passed in the lower end of hollow spindle 15, contactless between the two, ring flange 25 is connected by screw 23 and axle sleeve 22, housing 17 is at electro-optical system support 16, spacer ring 19, on the outside mask of axle sleeve 22 and ring flange 25 boss, fix with the boss of screw and ring flange 25.
Code-wheel is made of code-disc and slit plate coupling, the code channel layout of code-disc as shown in Figure 3: delineation has three circle channel, first lap code channel to be divided into two zones on code-disc, and 0 °～180 ° is the opaque zone territory, and 180 °～360 ° is the transparent zone territory; The second circle code channel is divided in 0 °～45 °, 45 °～90 °, 90 °～135 °, 135 °～180 °, 180 °～225 °, 225 °～270 °, 270 °～315 °, 315 °～360 ° eight sector regions, and the setting of each regional transparent zone section and opaque zone section is different.In 0 °～45 ° zone, a transparent zone section is arranged, be located at the centre in this zone, both sides are opaque zone sections, the width of transparent zone section and opaque zone section equates, so the width of the opaque zone section of transparent zone section both sides just equals half of transparent zone section width, this width is 45 °/4=11.25 °, and the width of transparent zone section is 11.25 ° * 2=22.5 °; In 45 °～90 ° zone, two transparent zone sections are arranged, the width of transparent zone section and opaque zone section equates and distributes alternately, near 45 ° and near 90 ° an opaque zone respectively arranged, its width is half of opaque zone section width, width in 90 °～135 ° zone, has four transparent zone sections for the width of (90 °～45 °)/8=5.625 ° transparent zone section and opaque zone section all is 5.625 ° * 2=11.25 °.The width of transparent zone section and opaque zone section equates and distributes alternately, near 90 ° and near 135 ° an opaque zone respectively arranged, its width is half of opaque zone section width, width is (135 °～90 °)/16=2.8125 °, and the width of transparent zone section and opaque zone section all is 2.8125 ° * 2=5.625 °; In 135 °～180 ° zone, eight transparent zone sections are arranged, the width of transparent zone section and opaque zone section equates and distributes alternately, near 135 ° and near 180 ° an opaque zone respectively arranged, its width is half of opaque zone section width, width is (180 °～135 °)/32=1.40625 °, and the width of transparent zone section and opaque zone section all is 1.40625 ° * 2=2.8125 °; In 180 °～225 ° zone, 16 transparent zone sections are arranged, the width of transparent zone section and opaque zone section equates and distributes alternately, near 180 ° and near 225 ° an opaque zone respectively arranged, its width is half of opaque zone section width, width is (225 °～180 °)/64=0.703125 °, and the width of transparent zone section and opaque zone section all is 0.703125 ° * 2=1.40625 °; In 225 °～270 ° zone, 32 transparent zone sections are arranged, the width of transparent zone section and opaque zone section equates and distributes alternately, near 225 ° and near 270 ° an opaque zone respectively arranged, its width is half of opaque zone section width, width is (270 °～225 °)/128=0.3515625 °, and the width of transparent zone section and opaque zone section all is 0.3515625 ° * 2=0.703125 °; In 270 °～315 ° zone, 64 transparent zone sections are arranged, the width of transparent zone section and opaque zone section equates and distributes alternately, near 270 ° and near 315 ° an opaque zone respectively arranged, its width is half of opaque zone section width, width is (315 °～270 °)/256=0.17578125 °, and the width of transparent zone section and opaque zone section all is 0.17578125 ° * 2=0.3515625 °; In 315 °～360 ° zone, 128 transparent zone sections are arranged, the width of transparent zone section and opaque zone section equates and distributes alternately, near 315 ° and near 360 ° an opaque zone respectively arranged, its width is half of opaque zone section width, width is (360 °～315 °)/512=0.087890625 °, and the width of transparent zone section and opaque zone section all is 0.087890625 ° * 2=0.17578125 °.
Three circle channel is smart code channel, be to be provided with 2,048 transparent zone sections in the whole circumference equal intervals, the width of transparent zone section and opaque zone section equates and distributes alternately, near 0 ° of (360 °) both sides an opaque zone is arranged respectively, its width is half of opaque zone width, 360 ° of width/2048 * 2/2=0.087890625 °, just 0 ° (360 °) line passes the center of an opaque zone section, and the width of transparent zone section and opaque zone section all is 0.087890625 ° * 2=0.17578125 °.
The slit layout of slit plate is as shown in Figure 4: be provided with three circle slits on slit plate, first lap is provided with a1, a2, a3, a4, a5, a6, eight slits of a7, a8, a1 0 ° of position, a2 45 ° of positions, a3 90 ° of positions, a4 135 ° of positions, a5 202.5 ° of positions, a6 247.5 ° of positions, a7 292.5 ° of positions, a8 is 337.5 ° of positions; Second circle is provided with b1, b2, b3, b4, b5, b6, b7, b8, eight slits, they are distributed on the circumference every 45 °, b1 0 ° of position, b2 45 ° of positions, b3 90 ° of positions, b4 135 ° of positions, b5 180 ° of positions, b6 225 ° of positions, b7 270 ° of positions, b8 is 315 ° of positions; The 3rd circle is provided with c1, c2, four slits of c3, c4, c1 and c2 are distributed in the both sides of 90 ° of lines, the angle of c1 and 90 ° of lines is 4 °, the angle of c2 and 90 ° of lines is 4.087890625 °, c3 and c4 are distributed in the both sides of 270 ° of lines, the angle of c3 and 270 ° of lines is 4.17578125 °, and the angle of c4 and 270 ° of lines is 4.263671875 °.
The principle of work explanation: coaxial mounted code-disc and slit plate are when hollow spindle clockwise rotates, and code-disc rotates with hollow spindle.Produce relative angular displacement between code-disc and the slit plate.The first lap code channel of code-disc and the first lap slit of slit plate are complementary, the second circle code channel and the second circle slit coupling, three circle channel and the 3rd circle slit coupling, when light-emitting component sends the transparent zone of light signal process code-disc and slit plate, receiving element receives light signal and presents high level state, and signal output is arranged; The light signal that light-emitting component sends is at the opaque zone of code-disc and slit plate, receiving element does not receive the signal of light, present low level state, do not have signal output, the code record of code-wheel output just the angular displacement position that the scrambler hollow spindle rotates.
First lap slit a
1, a
2, a
3, a
4, a
6, a
7, a
8The light signal that receives is as shown in Figure 5: A
1Represent the transparent zone high level signal, obstructed smooth low level signal is represented in the space, and these signal Processing become the relational expression of traditional cycle binary code to be:
A
1＝a
1
A
2＝a
3
A
3＝a
2a
4
A
4＝(a
5a
6)+(a
7a
8)
The second circle slit b
1, b
2, b
3, b
4, b
5, b
6, b
7, b
8, the light signal that receives as shown in Figure 6: these relational expressions that are processed into traditional cycle binary code are:
A
5＝b
1 1 2 3+b
8 1 2A
3+b
7 1A
2 3+b
6 1A
2 3+b
5A
1A
2 3+b
4A
1A
2A
3+b
3A
1 2A
3+b
2A
1 2 3
A
6＝b
2 1 2 3+b
1 1 2A
3+b
8 1A
2 3+b
7 1A
2 3+b
6A
1A
2 3+b
5A
1A
2A
3+b
4、A
1 2A
3+b
3A
1 2 3
A
7＝b
3 1 2 3+b
2 1 2A
3+b
1 1A
2 3+b
8 1A
2 3+b
7A
1A
2 3+b
6A
1A
2A
3+b
5A
1 2A
3+b
4、A
1 2 3
A
8＝b
4、
1 2 3+b
3 1 2A
3+b
2 1A
2 3+b
1 1A
2 3+b
8A
1A
2 3+b
7A
1A
2A
3+b
6A
1 2A
3+b
5A
1 2 3
A
9＝b
5 1 2 3+b
4、
1 2A
3+b
3 1A
2 3+b
2 1A
2 3+b
1A
1A
2 3+b
8A
1A
2A
3+b
7A
1 2A
3+b
6A
1 2 3
A
10＝b
6 1 2 3+b
5 1 2A
3+b
4、
1A
2 3+b
3 1A
2 3+b
2A
1A
2 3+b
1A
1A
2A
3+b
8A
1 2A
3+b
7A
1 2 3
A
11＝b
7 1 2 3+b
6 1 2A
3+b
5 1A
2 3+b
4、
1A
2 3+b
3A
1A
2 3+b
2A
1A
2A
3+b
1A
1 2A
3+b
8A
1 2 3
A
12＝b
8 1 2 3+b
7 1 2A
3+b
6 1A
2 3+b
5 1A
2 3+b
4、A
1A
2 3+b
3A
1A
2A
3+b
2A
1 2A
3+b
1A
1 2 3
The 3rd circle slit c
1, c
2, c
3, c
4The light signal phase differential that receives is four road signals in 1/4 cycle, c
1With c
3, c
2With c
4Enter amplifier respectively and carry out difference processing, obtain the sine wave signal that the two-way phase differential was 1/2 cycle, this two paths of signals is to A
1～A
12Each bit code is carried out treatment for correcting, wherein c
1With c
3After entering the amplifier difference, the signal that obtains is traditional cycle binary code A
13, c
2With c
4After entering the amplifier difference, the signal code that obtains is not done the output of sign indicating number position for proofreading and correct control code.
Good effect of the present invention: because code-wheel adopts unconventional meticulous structural design only just can export thirteen bits with three circle channel, the similar absolute matrix scrambler with routine of angle resolution is compared, and improves several grades of three amounts.Reach 0.087890625 °, main shaft adopts hollow shaft structure, makes scrambler profile radial dimension reduce nearly 10mm than the profile radial dimension of conventional similar absolute matrix scrambler, and the range of application of this scrambler has enlarged widely.
Four, description of drawings: Fig. 1 is the structural representation of prior art, and Fig. 2 is a structural representation of the present invention.Fig. 3 is the layout structure synoptic diagram of code-disc code channel of the present invention, and Fig. 4 is a slit layout structure synoptic diagram on the slit plate of the present invention, and Fig. 5 is first lap code channel of the present invention and first lap slit a
1, a
2... a
8Be complementary, the high level signal that receives at the different angles transparent zone shows form, and Fig. 6 is the second circle code channel of the present invention and the second circle slit b
1, b
2B
8Be complementary,, be processed into the demonstration form of traditional binary code at the signal that the different angles transparent zone receives.
Five, embodiment: the present invention implements by structure shown in Figure 2.The material of code-disc and slit plate adopts k
9Optics ripple glass, chrome-faced, the layout structure of code channel is implemented by structure shown in Figure 3 on the code-disc.The layout structure of slit is implemented by structure shown in Figure 4 on the slit plate, and the material of hollow spindle 15, electro-optical system support 16 adopts 45
#Steel.The material of housing 17, ring flange 25 adopts cast aluminium.The TSIP440 type luminotron that the German TELEFUNKEN of light-emitting component 26 employings company produces, the BPW16N type receiving tube that the German TELEFUNKEN of receiving element 14 employings company produces, spacer ring 19 adopts 45
#Steel.
Claims (2)
1, a kind of tubular shaft absolute matrix scrambler with thirteen bits output, comprise a system, photoelectric translating system, housing and external mechanical connecting element, it is characterized in that the main shaft in the axle system adopts hollow spindle (15), the structure that code-disc in the photoelectric translating system (21) adopts three circle channel and slit plate (20) to adopt three circle slits to be complementary, the output thirteen bits.
2, by claims 1 described a kind of tubular shaft absolute matrix scrambler with thirteen bits output, the three circle channel layout structure that it is characterized in that the code-disc (21) in the code-wheel is as follows: the first lap code channel is divided into two zones, 0 °～180 ° is the opaque zone territory, and 180 °～360 ° is the transparent zone territory; The second circle code channel is divided in 0 °～45 °, 45 °～90 °, 90 °～135 °, 135 °～180 °, 180 °～225 °, 225 °～270 °, 270 °～315 °, 315 °～360 ° eight sector regions, and the setting of each regional transparent zone section and opaque zone section is different.In 0 °～45 ° zone, a transparent zone section is arranged, be located at the centre in this zone, both sides are opaque zone sections, the width of transparent zone section and opaque zone section equates, so the width of the opaque zone section of transparent zone section both sides just equals half of transparent zone section width, this width is 45 °/4=11.25 °, and the width of transparent zone section is 11.25 ° * 2=22.5 °; In 45 °～90 ° zone, two transparent zone sections are arranged, the width of transparent zone section and opaque zone section equates and distributes alternately, near 45 ° and near 90 ° an opaque zone respectively arranged, its width is half of opaque zone section width, width in 90 °～135 ° zone, has four transparent zone sections for the width of (90 °～45 °)/8=5.625 ° transparent zone section and opaque zone section all is 5.625 ° * 2=11.25 °.The width of transparent zone section and opaque zone section equates and distributes alternately, near 90 ° and near 135 ° an opaque zone respectively arranged, its width is half of opaque zone section width, width is (135 °～90 °)/16=2.8125 °, and the width of transparent zone section and opaque zone section all is 2.8125 ° * 2=5.625 °; In 135 °～180 ° zone, eight transparent zone sections are arranged, the width of transparent zone section and opaque zone section equates and distributes alternately, near 135 ° and near 180 ° an opaque zone respectively arranged, its width is half of opaque zone section width, width is (180 °～135 °)/32=1.40625 °, and the width of transparent zone section and opaque zone section all is 1.40625 ° * 2=2.8125 °; In 180 °～225 ° zone, 16 transparent zone sections are arranged, the width of transparent zone section and opaque zone section equates and distributes alternately, near 180 ° and near 225 ° an opaque zone respectively arranged, its width is half of opaque zone section width, width is (225 °～180 °)/64=0.703125 °, and the width of transparent zone section and opaque zone section all is 0.703125 ° * 2=1.40625 °; In 225 °～270 ° zone, 32 transparent zone sections are arranged, the width of transparent zone section and opaque zone section equates and distributes alternately, near 225 ° and near 270 ° an opaque zone respectively arranged, its width is half of opaque zone section width, width is (270 °～225 °)/128=0.3515625 °, and the width of transparent zone section and opaque zone section all is 0.3515625 ° * 2=0.703125 °; In 270 °～315 ° zone, 64 transparent zone sections are arranged, the width of transparent zone section and opaque zone section equates and distributes alternately, near 270 ° and near 315 ° an opaque zone respectively arranged, its width is half of opaque zone section width, width is (315 °～270 °)/256=0.17578125 °, and the width of transparent zone section and opaque zone section all is 0.17578125 ° * 2=0.3515625 °; In 315 °～360 ° zone, 128 transparent zone sections are arranged, the width of transparent zone section and opaque zone section equates and distributes alternately, near 315 ° and near 360 ° an opaque zone respectively arranged, its width is half of opaque zone section width, width is (360 °～315 °)/512=0.087890625 °, and the width of transparent zone section and opaque zone section all is 0.087890625 ° * 2=0.17578125 °; Three circle channel is smart code channel, be to be provided with 2,048 transparent zone sections in the whole circumference equal intervals, the width of transparent zone section and opaque zone section equates and distributes alternately, near 0 ° of (360 °) both sides an opaque zone is arranged respectively, its width is half of opaque zone width, 360 ° of width/2048 * 2/2=0.087890625 °, just 0 ° (360 °) line passes the center of an opaque zone section, and the width of transparent zone section and opaque zone section all is 0.087890625 ° * 2=0.17578125 °; Three circle slit layouts of the slit plate in the code-wheel (20) are as follows: first lap is provided with a
1, a
2, a
3, a
4, a
5, a
6, a
7, a
8Eight slits, a
1At 0 ° of position, a
2At 45 ° of positions, a
3At 90 ° of positions, a
4At 135 ° of positions, a
5At 202.5 ° of positions, a
6At 247.5 ° of positions, a
7At 292.5 ° of positions, a
8337.5 ° of positions; Second circle is provided with b
1, b
2, b
3, b
4, b
5, b
6, b
7, b
8, eight slits, they are distributed on the circumference b every 45 °
1At 0 ° of position, b
2At 45 ° of positions, b
3At 90 ° of positions, b
4At 135 ° of positions, b
5180 ° of positions,, b
6At 225 ° of positions, b
7At 270 ° of positions, b
8315 ° of positions; The 3rd circle is provided with c
1, c
2, c
3, c
4Four slits, c
1And c
2Be distributed in the both sides of 90 ° of lines, c
1With the angle of 90 ° of lines be 4 °, c
2With the angle of 90 ° of lines be 4.087890625 °, c
3With c
4Be distributed in the both sides of 270 ° of lines, c
3With the angle of 270 ° of lines be 4.17578125 °, c
4With the angle of 270 ° of lines be 4.263671875 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031276571A CN1542532A (en) | 2003-07-28 | 2003-07-28 | Hollow shaft absolute type matrix encoder possessing 13 bits code output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031276571A CN1542532A (en) | 2003-07-28 | 2003-07-28 | Hollow shaft absolute type matrix encoder possessing 13 bits code output |
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| Publication Number | Publication Date |
|---|---|
| CN1542532A true CN1542532A (en) | 2004-11-03 |
Family
ID=34322072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031276571A Pending CN1542532A (en) | 2003-07-28 | 2003-07-28 | Hollow shaft absolute type matrix encoder possessing 13 bits code output |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1330931C (en) * | 2003-07-28 | 2007-08-08 | 中国科学院长春光学精密机械与物理研究所 | Absolute type matrix coding disk for exporting thirteen bits by utilizing three circle channels |
| CN103512598A (en) * | 2013-08-16 | 2014-01-15 | 衢州学院 | Absolute type matrix encoder |
| CN107639413A (en) * | 2017-10-27 | 2018-01-30 | 北京无线电测量研究所 | The calibrating installation and its calibration installation method of a kind of servo turntable |
-
2003
- 2003-07-28 CN CNA031276571A patent/CN1542532A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1330931C (en) * | 2003-07-28 | 2007-08-08 | 中国科学院长春光学精密机械与物理研究所 | Absolute type matrix coding disk for exporting thirteen bits by utilizing three circle channels |
| CN103512598A (en) * | 2013-08-16 | 2014-01-15 | 衢州学院 | Absolute type matrix encoder |
| CN103512598B (en) * | 2013-08-16 | 2015-10-28 | 衢州学院 | a kind of absolute type matrix encoder |
| CN107639413A (en) * | 2017-10-27 | 2018-01-30 | 北京无线电测量研究所 | The calibrating installation and its calibration installation method of a kind of servo turntable |
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