Electromagnetic accelerometer

Details Electromagnetic accelerometer Electromagnetic accelerometer

1996-05-23

1997-12-02

Chapman, John E.

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

G01P 1513

Patent

active

056938837

ABSTRACT:
An electromagnetic accelerometer includes a moving mass suspended to a peripheral frame and associated with stress gauges forming sensors for detecting the displacement of the moving mass which supports a coil, and a permanent magnet which is associated with a magnetic circuit formed by two pole pieces defining two air-gaps for channeling the magnetic field of the magnet. The moving mass includes a central recess having a surface at least equal to the surface of a free extremity of a first pole piece of the magnetic circuit and forming a shoulder for receiving the coil, the free extremity of the shoulder leading inside the air-gaps.

REFERENCES:
patent: 4987781 (1991-01-01), Reimann
patent: 5008774 (1991-04-01), Bullis et al.
patent: 5203210 (1993-04-01), Terry et al.

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