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What is encoder?

In general an encoder is a device that converts data from one format to another.

Linear vs. rotary encoders

We classify linear and rotary encoders according to the type of movement.

Incremental vs. absolute encoders

The difference between incremental and absolute encoders can be seen as the difference between stopwatch and clock.

Encoder resolution, accuracy and repeatability: What's the difference?

The resolution is the smallest movement detected by the encoder. It is measured differently depending on the type of encoder.

The accuracy is a measure of how close the output is to where it should be.

Repeatability is the maximum difference between different measurements taken at the same actual position.

Encoder glossary

Find definitions of technical encoder terminologies here.

How to select an encoder

With a variety of outputs, reading types and encoder body options to choose from, how can one get the best sensor for his application?

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Encoder Technology - LinACE™

LinACE™ is an extremely robust absolute linear cylindrical encoder system designed for integration into the servomechanism as a transducer, providing accurate measurements with excellent resolution and repeatability.

Encoder Technology - SATI for use with OnAxis products

SATI stands for Stand Alone Trimming Interface. This is a stand-alone device with calibration and zeroing functions which eliminate the need for a reference encoder and works with dedicated AM4096-based encoders. SATI interface improves the encoder accuracy to +/-0.2°.

How to choose between Nonius and AksIM technology

For Nonius technology, the magnetic code carrier consists of two magnetic encoder tracks. The outer track consists of an even number of alternately magnetized poles and is used for high-precision position determination. It is therefore referred to as the master track. The second inner track has one fewer pair of poles than the outer track and is therefore referred to as the Nonius track. This track is used to calculate an absolute position within one revolution of the pole disk. This is done by calculating the angular difference between the two tracks. Encoders with this technology must be calibrated before use. An alternative option to Nonius technology that does not require calibration is AksIM technology.

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