CN1504725A - Multiple rotating absolute encoder - Google Patents
Multiple rotating absolute encoder Download PDFInfo
- Publication number
- CN1504725A CN1504725A CNA02150752XA CN02150752A CN1504725A CN 1504725 A CN1504725 A CN 1504725A CN A02150752X A CNA02150752X A CN A02150752XA CN 02150752 A CN02150752 A CN 02150752A CN 1504725 A CN1504725 A CN 1504725A
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- potentiometer
- angular transducer
- output
- absolute encoder
- rotatable
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- Transmission And Conversion Of Sensor Element Output (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
A multiple rotation absolute encoder characterized in that it comprises two digital angle transducers through series connection, wherein the first digital angle transducer drives the second digital angle transducer through a gear speed reduction device, the output end of the first digital angle transducer is used as the low two position decimal number of the encoder output, the output end of the second digital angle transducer is used as the high three position of the encoder output, and the complete encoder output is the combination of the outputs from the two digital angle transducers.
Description
Technical field
The present invention relates to a kind of senser element that automatic field is measured physical quantitys such as the anglec of rotation, straight-line displacement, rotating speed that is used for, particularly relate to a kind of how rotatable absolute encoder.
Background technology
Present how rotatable absolute encoder all is a multi-disc code-disc structure, China Patent No. ZL90107279 for example, notification number CN1020956C, the day for announcing is on May 26th, 1993, name is called " absolute type shaft-position encoder method for designing and scrambler ", be characterized in that first code-disc rotates a complete cycle, when arriving the forward/back position, second code-disc wanted the forward/backward one yard position of beating, the mechanism that the driving code-disc is beated is not only complicated but also fragile, be the root of this class absolute encoder fault. the torque ratio that the driving code-disc is beated is bigger, has limited the range of application of this scrambler.
Summary of the invention
The present invention has overcome the shortcoming of prior art, provides a kind of maximum encoded radio to be equivalent to binary number 1001110001000000 (16 scramblers), the how rotatable absolute encoder of simple in structure, good reliability.
For the purpose that realizes inventing, the present invention is achieved by the following technical solutions: a kind of how rotatable absolute encoder, constitute by series connection by two-digit formula angular transducer, first digit formula angular transducer G1 drives second digit formula angular transducer G2 by gear reduction 1, the output D1 of described first digit formula angular transducer G1 is as low two denary numbers of scrambler output, the Senior Three position of the output D2 of described second digit formula angular transducer G2 is as the Senior Three position of scrambler output, described two-digit formula angular transducer G1, complete scrambler output is formed in the amalgamation of G2 output.
Owing to adopted technique scheme, provided by the invention how rotatable absolute encoder function is equivalent to multi-disc Weight and disk type absolute encoder, but simple in structure, good reliability, and driving force only needs tens gram forces centimetre, and power consumption is need 20 milliwatts only.
Description of drawings
Fig. 1 is how rotatable absolute encoder structural representation
Fig. 2 is digital angle sensor circuit schematic diagram
Fig. 3 is the duplex potentiometer fundamental diagram
Fig. 4 is a potentiometer W1 corner synoptic diagram
Fig. 5 is a potentiometer W1 ' corner synoptic diagram
Embodiment
Below in conjunction with accompanying drawing the present invention is further described: first digit formula angular transducer G1 drives second digit formula angular transducer G2 by gear reduction 1 among Fig. 1.The output D1 of first digit formula angular transducer G1 is as low two denary numbers of scrambler output, second digit formula angular transducer G2 is output as D2, the Senior Three position of D2 is as the Senior Three position of scrambler output, and complete scrambler output is formed in the amalgamation of two-digit formula angular transducer G1, G2 output.Wherein G1 measures the angle of 0 ° of-360 ° of whole circumference, is used for the segmentation coding.G2 measures the angle of gamut, is used for the rough segmentation coding.For the return difference and the error that overcome gear reduction 1 existence must be revised D2.This correction is carried out according to certain rule according to the numerical value of low two of D2 and the numerical value of D1.
Digital angular transducer is made of potentiometer W and converter A/D among Fig. 2, and described potentiometer W excitation and converter A/D benchmark use same voltage source V 0.Voltage source V 0 is received 1,3 two ends of potentiometer W, swing arm 2 output voltage V of potentiometer W.If potentiometer input corner is θ, then: V=V0 * θ, output voltage is only relevant with voltage source and corner, and is irrelevant with the resistance of potentiometer.
As the voltage reference of converter A/D, potentiometer swing arm output V is as the input of converter A/D simultaneously for this voltage source V 0, and then the output D of converter A/D is: and D=V/V0=(V0 * θ)/V0=θ.D directly reflects input corner size, and is irrelevant with the voltage source size, also irrelevant with the potentiometer resistance size.Can guarantee this digital angular transducer high precision in utmost point wide temperature range.
Potentiometer among Fig. 3 in the first digit formula angular transducer is 0 ° of-360 ° of infinite place potentiometer, and it is made of coaxial infinite place doubly-linked potentiometer W1, W1 '.
Among Fig. 4, Fig. 5 two potentiometers in addition dislocation open certain angle, selection of appointed device W1 is main potentiometer, W1 ' be inferior potentiometer.Use main potentiometer for 45 ° to 315 ° ,-45 ° to 45 ° switch to time potentiometer.
Claims (5)
1. rotatable absolute encoder more than a kind, it is characterized in that described how rotatable absolute encoder is made of by series connection two-digit formula angular transducer, first digit formula angular transducer G1 drives second digit formula angular transducer G2 by gear reduction (1), the output D1 of described first digit formula angular transducer G1 is as low two denary numbers of scrambler output, the Senior Three position of the output D2 of described second digit formula angular transducer G2 is as the Senior Three position of scrambler output, described two-digit formula angular transducer G1, complete scrambler output is formed in the amalgamation of G2 output.
2. according to claim 1 how rotatable absolute encoder, it is characterized in that described first digit formula angular transducer G1 measures the angle of 0 ° of-360 ° of whole circumference, as thin coding, described second digit formula angular transducer G2 measures the angle of gamut, as thick coding.
3. according to claim 1 how rotatable absolute encoder is characterized in that described digital angular transducer is made of potentiometer W and converter A/D, and described potentiometer W excitation and converter A/D benchmark use same voltage source V 0.
4. according to claim 1 how rotatable absolute encoder, it is characterized in that the potentiometer among the described first digit formula angular transducer G1 is 0 ° of-360 ° of infinite place potentiometer, described potentiometer is made of coaxial infinite place doubly-linked potentiometer W1, W1 ', the part of whole circumference is regional with connection potentiometer W1 ', and the remaining zone of circumference is with joining potentiometer W1 '.
5. according to claim 4 how rotatable absolute encoder is characterized in that described potentiometer W1 is 45 °-315 ° in the zone of whole circumference, and described potentiometer W1 ' is-45 °-45 ° in the zone of whole circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA02150752XA CN1504725A (en) | 2002-11-28 | 2002-11-28 | Multiple rotating absolute encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA02150752XA CN1504725A (en) | 2002-11-28 | 2002-11-28 | Multiple rotating absolute encoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1504725A true CN1504725A (en) | 2004-06-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA02150752XA Pending CN1504725A (en) | 2002-11-28 | 2002-11-28 | Multiple rotating absolute encoder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1504725A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589351A (en) * | 2012-03-07 | 2012-07-18 | 成都信息工程学院 | Digitizing collection device and detection method based on antiaircraft gun operation parameter of weather modification |
| CN101672661B (en) * | 2008-09-08 | 2012-12-19 | 方强 | One-dimensional absolute position coding system |
| CN111108346A (en) * | 2017-09-19 | 2020-05-05 | 美蓓亚三美株式会社 | Angle detecting device, rotation amount designating unit, and rotation driving unit |
-
2002
- 2002-11-28 CN CNA02150752XA patent/CN1504725A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101672661B (en) * | 2008-09-08 | 2012-12-19 | 方强 | One-dimensional absolute position coding system |
| CN102589351A (en) * | 2012-03-07 | 2012-07-18 | 成都信息工程学院 | Digitizing collection device and detection method based on antiaircraft gun operation parameter of weather modification |
| CN111108346A (en) * | 2017-09-19 | 2020-05-05 | 美蓓亚三美株式会社 | Angle detecting device, rotation amount designating unit, and rotation driving unit |
| US11404938B2 (en) | 2017-09-19 | 2022-08-02 | Minebea Mitsumi Inc. | Angle detection apparatus, rotation amount specification unit, and rotary driving unit |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |