Pendulous oscillating gyroscopic accelerometer

Details Pendulous oscillating gyroscopic accelerometer Pendulous oscillating gyroscopic accelerometer

1995-10-16

1997-11-25

Williams, Hezron E.

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

7350409, 73510, G01C 1902, G01P 902

Patent

active

056914709

ABSTRACT:
A pendulous oscillating gyroscopic accelerometer, comprising: a fixed case; a servo driven member mounted to the case for oscillation about a servo axis; a torque summing member mounted to the servo driven member for rotation about an output axis transverse to the servo axis; a rotor driven member mounted to the torque summing member for oscillation about a reference axis transverse to both the output axis and the servo axis; a pendulosity carried by at least one of the torque summing member and the rotor driven member to create a mass imbalance about an output axis; a first oscillation device for oscillating the rotor driven member about the reference axis, the oscillation having a first amplitude, a first frequency and a first phase; a second oscillation device for oscillating the servo driven member about the servo axis, the oscillation having a second amplitude, a second frequency and a second phase; a measurement device for determining the rotation of the torque summing member about the output axis resulting from pendulosity torque caused by acceleration of the pendulosity; a controller, responsive to the measurement device, for altering the oscillation caused by at least one of the oscillation devices to create torque to counterbalance pendulosity torque; and a determinator, responsive to the controller, for determining acceleration along the input axis.

REFERENCES:
patent: 3456513 (1969-07-01), Emerson
patent: 3477298 (1969-11-01), Howe
patent: 3587330 (1971-06-01), Deer
patent: 3616699 (1971-11-01), Brand
patent: 4275605 (1981-06-01), Kennel
patent: 4464942 (1984-08-01), Krupick
patent: 4598585 (1986-07-01), Boxenhorn

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