​Encoders Measure...

1. angular displacements

2. rectilinear or circular movements

3. rotation speed and acceleration

The encoder device must be connected to electronic circuits and have mechanical connections to function.

​encoder is a term that means angular position transducer

The encoders can be of two types:

• incremental encoders

• absolute encoders

Incremental encoders

Encoders are defined as incremental when the output signals are proportional in a relative way to the displacement carried out.

• relative - opposite of absolute, not absolute, in proportion to, compared to something else

Absolute encoders

Encoders are defined as absolute when a well-defined value corresponds to each position of the shaft.