Compensated rotary position encoder

Details Compensated rotary position encoder Compensated rotary position encoder

1987-06-29

1989-04-04

Shoop, Jr., William M.

Coded data generation or conversion

Digital pattern reading type converter

Optical

250231SE, H03M 122

Patent

active

048190519

ABSTRACT:
An angular position encoder utilizes Moire fringes formed by illuminating regions of coded images arranged circumferentially on wheels rotatable in accordance with angles to be encoded. Movement of the Moire fringes from a reference position is detected and used to determine the angular movement. All non-rotating movements of the coded wheel are compensated by the encoding process and do not effect the output.

REFERENCES:
patent: 4641027 (1987-02-01), Renner et al.

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