High Resolution Encoder

High Resolution Encoder

A high resolution encoder is typically a rotary or angle encoder with a resolution of over 10,000counts per revolution (cpr) and often >100,000cpr.
For incremental encoders, with A/B pulse style outputs, resolution is specified as 4x the number of pulses per rev since there are 2 edges to be counted per each pulse in the A stream and 2 edges on each B stream pulse.
High resolution encoders are usually required for precision control of speed and/or position,especially when control at very low speed is required.
A classic example is angular motion control of pointing devices such as cameras, telescopes, radar or weapons systems.
for solid shaft encoder, the highest resolution is 23,040ppr
for hollow shaft encoder, the highest resolution is 80,000ppr

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