Accelerometric sensor with plane pendulum structure

Details Accelerometric sensor with plane pendulum structure Accelerometric sensor with plane pendulum structure

1988-09-30

1990-05-01

Chapman, John

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

G01P 1502

Patent

active

049208004

ABSTRACT:
An accelerometric sensor according to the invention comprises a plane pendulum structure presenting a test body suspended to a fixed part by at least two parallel blades, flexible in the plane of the said test body, in order to be able to move in translation in the said plane according to a sensitive axis perpendicular to the said blades. This test body comprises a moving support element linked to the said flexible blades and a test mass suspended to the said support element by at least a third and fourth blade parallel to the preceding ones and flexible in the plane of the said test body. The invention enables to reduce substantially the sensitivity to the transverse acceleration of the detection structure when it is submitted to an acceleration directed according its sensitive axis S.

REFERENCES:
patent: 3636774 (1972-01-01), Allison
patent: 4600934 (1986-07-01), Aine et al.
patent: 4663972 (1987-05-01), Gerard
patent: 4711128 (1987-12-01), Boura

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