Measuring and testing – Speed – velocity – or acceleration – Acceleration determination utilizing inertial element
Patent
1989-04-14
1990-07-31
Chapman, John
Measuring and testing
Speed, velocity, or acceleration
Acceleration determination utilizing inertial element
73517B, G01P 1513
Patent
active
049441841
ABSTRACT:
An improved accelerometer of the type that includes a proof mass suspended from a support by one or more flexures, such that the proof mass can pivot with respect to the support about a hinge axis. The proof mass includes a paddle attached to the flexures, the paddle having first and second paddle surfaces. The coil is mounted on the first paddle surface, and the accelerometer includes a stator for mounting the support and for forming a magnetic circuit with the coil. The improvement comprises positioning the flexures such that a plane containing the hinge axis and the center of mass of the proof mass is parallel to one of the paddle surfaces, and closer to one paddle surface than to the other paddle surface. In a preferred arrangement, the plane containing the hinge axis and the center of mass is approximately coplanar with one of the paddle surfaces and with the flexures.
REFERENCES:
patent: 4488445 (1984-12-01), Aske
patent: 4498342 (1985-02-01), Aske
patent: 4748848 (1988-06-01), Scholl et al.
patent: 4788864 (1988-12-01), Pier
Blake Graeme A.
Norling Brian L.
Novack Mitchell J.
Chapman John
Joike Trevor B.
Sundstrand Data Control Inc.
Yatsko Michael S.
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