Multi-turn absolute encoder！

Magnetic absolute encoders

The magnetic encoder uses a series of magnetic poles (2 or more) to represent the encoder position to a magnetic sensor (typically magneto-resistive or Hall Effect). The magnetic sensor reads the magnetic pole positions.

This code can be read by a controlling device, such as a microprocessor or microcontroller to determine the angle of the shaft, similar to an optical encoder.

The absolute analog type produces a unique dual analog code that can be translated into an absolute angle of the shaft (by using a special algorithm^[

Capacitive absolute encoders

An asymmetrical shaped disc is rotated within the encoder. This disc will change the Capacitance between two electrodes which can be measured and calculated back to an angular value ^[6]

Absolute multi-turn encode

A multi-turn encoder can detect and store more than one revolution. The term absolute multi-turn encoder is generally used if the encoder will detect movements of its shaft even if the encoder is not provided with external power.

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