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  • Changchun Rongde Optics
  • Co.,Ltd.
  • Add:No.1666 Yaan Road,
  • North Lake Development District,
  • Changchun 130102,China
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Roundss encoder application and installation methods!

Changchun Rongde Optics Co.,Ltd.   Release time:2016/8/9   Browse:728

Roundss encoder application and installation methods incremental rotary encoder
Each ring shaft rotation, incremental encoders provide a certain number of pulses. Measured periodically or the pulses per unit time can be used to measure the speed of movement. If it is accumulated in a reference point behind the number of pulses, the calculated value represents the angle of rotation or stroke parameters. 90o phase difference between two-channel encoder output pulses.
Rotation sensing signal to make the received pulse of the electronic device receiving the shaft, and therefore can be used to achieve bi-directional positioning control; In addition, the three-channel incremental rotary encoder pulse per revolution is called a zero signal.
Incremental Absolute rotary encoder absolute encoder position of each axis to provide a unique value for the digital encoding. Especially in position control applications, the absolute encoder reduces the computational tasks receiving electronic device, thereby eliminating the need for complicated and expensive input device: And when the machine on the power after a power failure or power, not
need to return to the position of the reference point, you can take advantage of the current position value.
Single-turn absolute encoder The axis is subdivided into a predetermined number of measuring steps, the maximum resolution of 13 bits, which means that the maximum distinguishable 8192 position + multi-turn absolute encoder can not only measure the angle in a circle displacement, but also fortunate, J with a multi-step gear measuring laps. The number of laps for 12 more laps, meaning that the maximum 4096 revolutions can be identified. The total resolution up to 25 or 33,554,432 measuring the number of steps.
Parallel absolute rotary encoders transfer position to estimate the value of the electronic device are transmitted in parallel by several cables.
Incremental absolute encoder →
Incremental rotary encoder rotates the output pulse by 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 in order to know the results only after errors occur.
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, it is not guarantee the accuracy of the location.
In the industrial in there every operation to go first reference point, turn the change and other methods.
Such methods for some industrial projects too much trouble, not even allowed to give change boot (boot will know the exact position), there are some conditions are not allowed due to interference effects arising from the wrong place, so there is an absolute encoder
It appears.
Many dynasty channel groove, each groove successively with 2-wire, 4-wire, 8-wire, wire ...... 16 arranged so that the encoder absolute value of each position on the optical encoder rotary encoder by reading through each track groove, dark, obtained from a unique binary code (Gray code) n-1-th power of 2 to 2 to the zero power, which is called n-bit absolute encoder device. Such an encoder is determined by the mechanical position of the optical encoder, it is not a power outage, the impact of interference, because each absolute encoder position determined by the mechanical position is unique, it requires no memory, no need to find a reference point, and it would not have to count, when you need to know where and when to go read its position. Thus, anti-jamming features of the encoder, greatly improving the reliability of data


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