The work principle of rotary encoder.！

he principle and the role of the rotary encoder: it is a way to convert a string of digital rotary displacement rotary pulse sensor, these pulses can be used to control the angular displacement, if the encoder strip or in combination with the screw gear together, It can be used to measure linear displacement.
After the encoder generates an electrical signal from the speed control is set CNC, programmable logic controller PLC, control system to deal with. These sensors are used in the following areas: machine tools, material processing, motor feedback systems, and measurement and control equipment. In ELTRA angular displacement encoder using a photoelectric conversion scanning principle. Reading system is based on the rotation of the radial indexing plate, the indexing consists of alternating opaque and translucent window windows constructed. This whole system is irradiated with an infrared light source vertically, so put the image on a plate light projected onto the surface of the receiver, the receiver is covered with a grating, said collimator device, and it has a disc the same window. The receiver's job is to feel the light generated by the change in rotation of the disc, and then converts the light into a corresponding change in the electrical changes. In general, the rotary encoder can also get a speed signal, the signal to be fed back to the inverter, thereby adjusting the inverter output data

Previous：Roundss magnetic encoder prices for lathe made in China
Next：Servo motor encoder Optical straight shaft encoder