Motion sensing apparatus

Details Motion sensing apparatus Motion sensing apparatus

1980-07-22

1982-05-11

Rubinson, Gene Z.

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

G05B 1940

Patent

active

043296343

ABSTRACT:
Apparatus is disclosed which is responsive to the movement of a movable element for generating a plurality of electrically phase-displaced signals containing information indicative of the direction, speed and distance of movement of said movable element. The apparatus comprises a plurality of position-displaced electrically conductive coils and a permanent magnet mounted adjacent each of said coils for producing a path of normally substantially constant magnetic flux adjacent each of said coils. A flux varying device is coupled to the movable element and is responsive to the movement of the movable element for varying the level of the magnetic flux adjacent each of the coils in dependence upon the direction, speed and distance of movement of the movable element, whereby the resultant electromotive force induced in each of the coils defines the plurality of electrically phase-displaced signals.

REFERENCES:
patent: 3463985 (1969-08-01), Fredriksen
patent: 3476996 (1969-11-01), Fredriksen
patent: 3482155 (1969-12-01), Fredriksen
patent: 3839665 (1974-10-01), Gabor

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