incremental encoders and absolute encoder！

classification

Accordance with the principle can be divided into incremental encoders and absolute categories.

Incremental

Incremental encoder displacement is converted into periodic electrical signals, then converted into electrical signals that count pulse represents the magnitude of displacement by the number of pulses.

Absolute

Absolute encoders at each position corresponding to a certain digital code, so its value is only shown with the beginning and end of the measurement, but not to the middle of the process measurement.

advantage

Encoders from proximity switches, photoelectric switch to control the positioning of the rotary encoder industry, proximity switches, photoelectric switch application is already quite mature, and easy to use. However, with the continuous development of the IPC, has a new claim, so that the choice of a rotary encoder to highlight the advantages of the application: In addition to locating information, the control room can also know where it can be positioned in the control room flexibility flexible easy and secure adjustment field installation, longevity: a fist-sized rotary encoder can be measured from several μ to several tens few hundred meters away, n-station, just to solve a rotary encoder installed security problem, avoid a lot of proximity switches, photoelectric switches in the field of mechanical trouble to install, easy to be damaged and were hot, water, gas and other issues plagued. Because it is the photoelectric encoder, no mechanical wear and tear, as long as the exact location of the installation, which is often a very long service life. In addition to multi-functional positioning, the current position can also be remote, in terms of velocity, is particularly important for the application of the drive, stepper motor or the like. For the economy of the plurality of control stations, just the cost of a rotary encoder, and more importantly, installation, maintenance, and reduce wear and tear costs, increase service life, the economy of the increasingly prominent.

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