Encoder Technologies Used in Industry！

    Hall-effect quadrature encoder, sensing gear teeth on the driveshaft of a robot vehicle.

   Hall-effect quadrature encoder, sensing gear teeth on the driveshaft of a robot vehicle.

    Analogue devices that perform a similar function include the synchro, the resolver, the rotary variable differential transformer(RVDT), and the rotary potentiometer.
A linear encoder is similar to a rotary encoder, but measures position in a straight line, rather than rotation. Linear encoders often use incremental encoding and are used in many machine tools.

    In this example, the transition from sector 3 to sector 4, like all other transitions, involves only one of the contacts changing its state from on to off or vice versa. This means that the sequence of incorrect codes shown in the previous illustration cannot happen.

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