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- Changchun Rongde Optics
- Co.,Ltd.
- Add：No.1666 Yaan Road,
- North Lake Development District,
- Changchun 130102,China
- Tel：86-431-81881745
- Fax：86-0431-85256892
- E-mail：rongdecui@roundss.net
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what is absolute encoder！
Changchun Rongde Optics Co.,Ltd. Release time：2016/2/23 Browse：839
what is absolute encoder
1, the rotary incremental encoder output pulse is rotated by a counting device to calculate its position, when the encoder does not move or power outage, counting on internal memory to remember the location of the device. Thus, when the power failure, the encoder does not have any movement, when work calls, encoder output pulse process, it can not have lost the pulse interference, or counting device will calculate and zero offset memory, and this species offset amount is impossible to know, to know only after the wrong production results appear.
2, the solution is to increase the reference point, the encoder after every reference point, the reference position correction position count into the memory device. In the previous reference point, we can not guarantee the accuracy of the location. To this end, every operation in the industrial in there to go first reference point, turn the change and other methods.
3, such an approach for some industrial projects too much trouble, not even allowed to give change boot (boot will know the exact location), so there is an absolute encoder appears.
4, there are many channels dynasty engraved lines on the absolute encoder series optical encoder, each groove successively with 2 lines, 4 lines, 8 lines, 16 lines. . . . . . Choreography, so that in each position encoder by reading through each track groove, dark, get a unique set of binary coded 2 ^ n-1 from the 2 to the power of zero (Gray code), which is called n-bit absolute encoder. Such a position encoder is mechanically photoelectric encoder decision, it is not a power outage, the impact of interference.
5, the absolute encoder position is determined by the mechanical coding, it does not need memory, no need to find a reference point, and would not have to count, when you need to know where and when to go read its position. Thus, interference encoder properties, greatly improving the reliability of the data.
6, from single to multi-turn absolute encoder absolute encoder
7, absolute rotary single-turn absolute encoder to measure the rotation of each channel optical encoder engraved lines to obtain a unique code, when rotated more than 360 degrees, the encoding back to square one, so as not to meet the unique absolute encoder principle, such a code can only be used to rotate 360 degrees within the range of measurement, known as single-turn absolute encoder.
8, if you want to measure more than 360 degrees of rotation, it is necessary to use multi-turn absolute encoder.
9, the encoder manufacturers use mechanical timepiece gear principle, when the central rotary encoder, through another set of code wheel gear (or sets of gear, multiple sets of code disk), single-turn encoder, based on the additional ring number encoded to expand the measurement range of the encoder, absolute encoder so called multi-turn absolute encoder, it is also determined by the mechanical position encoders, position encoding each unique non-repetition, without memory.
10. Another advantage of multi-turn encoder is due to the large measurement range, the actual use is often more affluent, so that the installation of unnecessary hard to find zero, as a starting point to an intermediate position on it, and greatly simplifies the installation and commissioning difficulty.
11, absolute encoder
* Textile Machinery
* Irrigation Machinery
* Paper and Printing
* Water gate
* Robots and mechanical arms
* Port Crane
* Metallurgical equipment
* Heavy Machinery
* Precision measuring equipment
* Machine tools, food machinery
1, the rotary incremental encoder output pulse is rotated by a counting device to calculate its position, when the encoder does not move or power outage, counting on internal memory to remember the location of the device. Thus, when the power failure, the encoder does not have any movement, when work calls, encoder output pulse process, it can not have lost the pulse interference, or counting device will calculate and zero offset memory, and this species offset amount is impossible to know, to know only after the wrong production results appear.
2, the solution is to increase the reference point, the encoder after every reference point, the reference position correction position count into the memory device. In the previous reference point, we can not guarantee the accuracy of the location. To this end, every operation in the industrial in there to go first reference point, turn the change and other methods.
3, such an approach for some industrial projects too much trouble, not even allowed to give change boot (boot will know the exact location), so there is an absolute encoder appears.
4, there are many channels dynasty engraved lines on the absolute encoder series optical encoder, each groove successively with 2 lines, 4 lines, 8 lines, 16 lines. . . . . . Choreography, so that in each position encoder by reading through each track groove, dark, get a unique set of binary coded 2 ^ n-1 from the 2 to the power of zero (Gray code), which is called n-bit absolute encoder. Such a position encoder is mechanically photoelectric encoder decision, it is not a power outage, the impact of interference.
5, the absolute encoder position is determined by the mechanical coding, it does not need memory, no need to find a reference point, and would not have to count, when you need to know where and when to go read its position. Thus, interference encoder properties, greatly improving the reliability of the data.
6, from single to multi-turn absolute encoder absolute encoder
7, absolute rotary single-turn absolute encoder to measure the rotation of each channel optical encoder engraved lines to obtain a unique code, when rotated more than 360 degrees, the encoding back to square one, so as not to meet the unique absolute encoder principle, such a code can only be used to rotate 360 degrees within the range of measurement, known as single-turn absolute encoder.
8, if you want to measure more than 360 degrees of rotation, it is necessary to use multi-turn absolute encoder.
9, the encoder manufacturers use mechanical timepiece gear principle, when the central rotary encoder, through another set of code wheel gear (or sets of gear, multiple sets of code disk), single-turn encoder, based on the additional ring number encoded to expand the measurement range of the encoder, absolute encoder so called multi-turn absolute encoder, it is also determined by the mechanical position encoders, position encoding each unique non-repetition, without memory.
10. Another advantage of multi-turn encoder is due to the large measurement range, the actual use is often more affluent, so that the installation of unnecessary hard to find zero, as a starting point to an intermediate position on it, and greatly simplifies the installation and commissioning difficulty.
11, absolute encoder
* Textile Machinery
* Irrigation Machinery
* Paper and Printing
* Water gate
* Robots and mechanical arms
* Port Crane
* Metallurgical equipment
* Heavy Machinery
* Precision measuring equipment
* Machine tools, food machinery
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