Absolute Encoder selection（2）！

When selecting the absolute encoder, the following points should be considered to
achieve optimum travel characteristics and good dynamic properties in the system:
•The resolution of the position measurement must be as high as possible.
The more increments the encoder counts per unit-distance traveled,
–the more exactly it approaches the target position
–and the more rigid the control system can be set.
•The "refresh time"
 (the time taken for the absolute encoder to determine a new actual position)
should be less than 1 ms.
This value exerts a decisive influence on the dynamic characteristics of the drive.

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