Three axis inertial measurement unit with counterbalanced, low i

Details Three axis inertial measurement unit with counterbalanced, low i Three axis inertial measurement unit with counterbalanced, low i

1990-10-11

1991-11-19

Chapman, John E.

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

73510, G01P 904

Patent

active

050656279

ABSTRACT:
A three axis inertial measurement unit is shown having a low inertia mechanical oscillator formed from two platforms counterbalanced against each other. Each platform is dithered at its natural frequency about a single torsional axis. A plurality of accelerators are mounted upon at least one of the counterbalanced platforms with each accelerometer having at least an input axis mounted at a predetermined angle to the torsional axis and to the platform. Each platform has a three legged, Y-shaped mounting member with a rotor member positioned between the legs of the mounting member. Web members which form the legs of the mounting member join the rotor member to the Y-shaped mounting member. Additionally, driving webs are mounted on each side of the web members for further joining the mounting member to the rotary member.

REFERENCES:
patent: 4821572 (1989-04-01), Hulsing

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