Subminiature linear accelerometer

Details Subminiature linear accelerometer Subminiature linear accelerometer

1976-09-20

1978-03-28

Gill, James J.

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

G01P 1508

Patent

active

040808351

ABSTRACT:
A linear accelerometer is contained within a combination framework and case having a magnetic circuit including an annular gap with a magnetic flux density therethrough. An insulated bearing mount is fixed within the framework carrying a pair of opposed axially adjustable bearings defining a pivot axis. The bearings are supported in a resilient mass. A moving member carries a pair of pivots which seat in the bearings allowing motion of the moving member about the pivot axis. The moving member carries a torque coil disposed in the annular gap. Pick-off coils are mounted on the framework closely spaced from opposing planar conducting surfaces on the moving member. A pair of flexible leads extend between the framework and the moving member, providing electrical power to the torque coil. The flexible leads are disposed proximate to the pivot axis and at substantially 180.degree. separation thereabout to reduce static and dynamic torques on the moving member. Motion of the moving member between the pair of pick-off coils provides acceleration sensing output and a signal to the torque coil which servoes the moving member to a reference position.

REFERENCES:
patent: 2591921 (1952-04-01), Cosgriff et al.
patent: 3690187 (1972-09-01), Morris
patent: 3702073 (1972-11-01), Jacobs
patent: 3707091 (1972-12-01), Morris et al.

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