Patent · US Active

Bias and quadrature reduction in class II coriolis vibratory gyros

US7565839B2 · kind B2 · utility

35Cited by

7References

26Claims

0Family size

Assignee

NORTHROP GRUMMAN GUIDANCE AND ELECTRONICS COMPANY, INC. · US

Inventors

Robert E. Stewart · Calabasas, US
Stanley F. Wyse · Calabasas, US

Key dates

Filing date	Aug 7, 2006
Grant date	Jul 28, 2009
Priority date	—
Expiry date	Oct 24, 2026

Classification

Technology area (CPC G)Physics
CPC primaryG01C19/5649
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The method and apparartus in one embodiment may have the steps of: providing a two-dimensional axisymmetric oscillator having a beam containing two principal elastic axes and two principal damping axes; driving the beam with drive components to oscillate; driving, during a first period, the beam along a drive axis of the beam in a direction normal to one pair of faces of the beam while Coriolis coupled vibration is sensed along a sense axis of the beam normal to an orthogonal pair of faces of the beam; reversing, during a second period, drive and sense axes driving the beam; reducing a bias of the beam to zero; and reducing a quadrature of the beam to zero.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.