Tuned coriolis angular rate measuring device

Details Tuned coriolis angular rate measuring device Tuned coriolis angular rate measuring device

G - Physics

01

C

79/12

G01C 19/42 (2006.01)

Patent

CA 1163840

52-AY-1201 TURNED CORIOLIS ANGULAR RATE MEASURING DEVICE ABSTRACT OF THE DISCLOSURE A tuned coriolis, angular rate measuring device includes a substantially hollow, generally annular rotor driven by a high-speed, synchronous spin motor. The motor is made unsymmetrical by mounting within the rotor near its periphery at least a pair of high density masses, the respective masses being located diametrically opposite one another. The rotor is secured within a gimbal structure which is, in turn, mounted in tuned fashion upon a support housing through a cantilever spring at each end along the gimbal output axis, thereby providing bearingless, frictionless pivots permitting limited gimbal rotation. A pair of piezo-electric crystals is secured at opposite edges of one of the springs for sensing relative angular motion between the gimbal and the housing. The crystals are electrically paralleled so as to cancel any signals resulting from linear movement between the gimbal and housing.

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