Position encoder

Details Position encoder Position encoder

1983-04-18

1985-06-18

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

250231SE, G08C 906

Patent

active

045243476

ABSTRACT:
A position measuring device includes a conventional encoder, a scale member and an index member together arranged to provide two periodic waveforms of the same frequency and in quadrature with one another. Errors in the waveforms are corrected, and the corrected waveforms used to produce an indication of the position represented by the waveforms. The two positional indications are combined to give a high-resolution output. The conventional encoder may be absolute or incremental, and the device may be used to measure linear or angular position relative to a datum.

REFERENCES:
patent: 2986726 (1961-05-01), Jones
patent: 3534360 (1970-10-01), Hafle

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