The principle of the rotary encoder！

The principle of the rotary encoder is the A-phase, B different or coupled with the timing pulse and a series of digital circuits to obtain the positive and negative signals.
Rotary encoder frequency multiplier principle is A phase, B different or delay and a series of digital circuits A phase, B phase several times the frequency of the pulse signal, thereby greatly improving the angle of resolution, improve control accuracy.
A, B, Z phase input to the programmable controller PLC, PLC uses a high-speed counter and the angular displacement measured according to the pulse to issue water supply to the water supply of the rotary encoder is connected to the rotary shaft, For the ink with the water pressure on the printing of a series of printing pressure spray control signals such as timing action.
Rotary encoder is an optoelectronic precision components, the internal lens, installation and use of transport and careful not to be severe vibration and beat. Notice the coincidence between the mechanical zero point and the encoder zero point. Notice that the axis of the encoder and the synchronous measuring axis should keep coaxial (different axis <0.20mm, two-axis declination <1.5 °), so as not to damage the coupling And rotary encoders, but also to prohibit rigid connections. Rotary encoders and flexible coupling is characterized by damage to the water supply ink with water, such as the pressure of the printing press powder pressure, while out of control.

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