The working principle of incremental encoder.！

Shaft rotates every circle, incremental encoders provide a certain number of pulses. Measured periodically or the pulses per unit time can be used to measure the speed of movement. If incremental encoder is accumulated in a reference point behind the number of pulses, the calculated value represents the angle of rotation or stroke parameters.Incremental encoder 90º phase difference between two-channel encoder output pulses. Rotation sensing signal to make the received pulse of the electronic device receiving the shaft, and therefore can be used to achieve bi-directional positioning control; In addition, the three-channel incremental rotary encoder pulse per revolution is called a zero signal.

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