Rotary encoder！

Encoders (encoder) in the industrial field, refers to the displacement of the digital signal into a sensor device. Encoders are used to detect the speed, position, angle, distance or count of mechanical movements and convert angular or linear displacement into electrical signals sensor. Encoders, especially rotary encoders, are widely used in machine tools, materials processing, motor feedback systems, and measurement and control equipment. Servomotors require encoders for commutation, speed and position detection.
There are many kinds of encoders, according to their scale method and signal output principle, can be divided into incremental encoders, absolute encoders and hybrid three, for absolute type encoders, can be subdivided into single lap absolute value Encoders and multi-turn absolute encoders.
According to the detection principle, the encoder can be divided into optical encoder, magnetic encoder, and inductive and capacitive.
In accordance with the installation of the encoder can be divided into solid shaft and hollow shaft, which can be divided into hollow shaft shaft and through-hole axis.
According to the use of the encoder environment, can be divided into industrial load, heavy and explosion-proof type.

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