Encoder (position)
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An encoder is a sensor which turns a position into an electronic signal.
There are two forms:
• Absolute encoders give an absolute position value.
• Incremental encoders count movement rather than position. With detection of a datum position and the use of a counter, an absolute position may be derived.
The position may be measured as either linear or angular position
• Linear encoder, converts linear position to an electronic signal
• Rotary encoder, converts rotary position to an electronic signal
See also