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High-Resolution Optical Encoder

Photonics.com
Feb 2013
Nanotec Electronic U.S. Inc.Request Info
 
MEDFORD, Mass., Feb. 8, 2013 — For closed-loop applications, Nanotec Electronic US Inc. has launched the high-resolution NOE2 optical encoder.

It produces a resolution up to 4000 cycles per revolutions, despite its small size of 31 × 37 × 11.5 mm. Mechanical resolution is down to 0.225° using quadratic evaluation. This corresponds to a resolution of 80 increments per step for a stepper motor with a 1.8° step angle — four to eight times the resolution achieved with conventional incremental encoders.

The commutation angle in field-oriented controlled operation can be measured with high accuracy for good synchronization even at low speeds.

The three-channel encoder is supplied with a line driver. Besides the 5-V standard version, there is a 24-V model available for use in mechanical engineering.


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GLOSSARY
optical encoder
A device designed to measure linear or rotary motion by detection of the movement of markings on a transparent medium past a fixed point of light. The encoder has a moving code plate, a glass disc with positional or angular information -- generally bit information and -- simple geometric optics for readout.
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