Accession Number:

ADD007651

Title:

High Accuracy Optical Shaft Encoder System.

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s):

Report Date:

1980-09-23

Pagination or Media Count:

4.0

Abstract:

An optical shaft encoder system for measuring electrically powered motor shaft speed, including a system for increasing the sinosoidal encoder output waveforms by a multiplication factor, converting the product of the multiplied waveforms to square waves, comparing the waveforms to a reference waveform and generating a correction signal which is fed back to the motor through servo circuitry, thereby correcting errors in motor shaft rotational speed. Author

Subject Categories:

  • Electrical and Electronic Equipment
  • Manufacturing and Industrial Engineering and Control of Production Systems
  • Optical Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE