Optical scanning transducer

Details Optical scanning transducer Optical scanning transducer

1987-01-15

1988-07-05

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

With particular 'error-detecting' means

324 61R, 361290, 350 65, 350 67, G05B 106

Patent

active

047557311

ABSTRACT:
There is provided an optical scanning apparatus having an angular positioning means that is generally comprised of a variable capacitor including a rotor disc with a plurality of equally spaced conductors and a stator disc with twice as many equally spaced conductors axially spaced from the rotor disc for capacitive coupling. Excitation of the variable capacitor provides a feedback signal to the controller of the optical scanning apparatus that is proportional to the angular position.

REFERENCES:
patent: 1520329 (1924-12-01), Cherpeck
patent: 2744220 (1956-05-01), Matteson
patent: 3845377 (1974-10-01), Shimotori
patent: 3857092 (1974-12-01), Meyer
patent: 4092579 (1978-05-01), Weit
patent: 4312590 (1982-01-01), Harbaugh
patent: 4347478 (1982-08-01), Heerens et al.
patent: 4463299 (1984-07-01), Langley et al.

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