Title:
CORIOLIS GYROSCOPE HAVING CORRECTION UNITS AND METHOD FOR REDUCING THE QUADRATURE BIAS
Document Type and Number:
WIPO Patent Application WO/2011/095317
Kind Code:
A3
Abstract:
A Coriolis gyroscope (1) comprises a mass system which can be excited to vibrate parallel to a first axis, wherein a deflection of the mass system on account of a Coriolis force along a second axis, which is provided perpendicular to the first axis, is detectable, and comprises at least a first correction unit (30) and at least a second correction unit (40), which each comprise a plurality of stationary correction electrodes (31, 32, 41, 42) and moving correction electrodes (24, 25, 26, 27), wherein the stationary correction electrodes (31, 32, 41, 42) extend in the direction of the first axis and are firmly connected to a substrate by associated anchor structures (33, 43), and wherein the moving correction electrodes (24, 25, 26, 27) form a part of the mass system. A method for reducing the quadrature bias of such a Coriolis gyroscope (1) comprises applying at least temporarily constant corrective voltages to the correction units (30, 40).
Inventors:
GEIGER WOLFRAM (DE)
LEINFELDER PETER (DE)
LEINFELDER PETER (DE)
Application Number:
PCT/EP2011/000444
Publication Date:
October 27, 2011
Filing Date:
February 01, 2011
Export Citation:
Assignee:
NORTHROP GRUMMAN LITEF GMBH (DE)
GEIGER WOLFRAM (DE)
LEINFELDER PETER (DE)
GEIGER WOLFRAM (DE)
LEINFELDER PETER (DE)
International Classes:
G01C19/5755
Foreign References:
| US7051590B1 | 2006-05-30 | |||
| US20070144255A1 | 2007-06-28 | |||
| DE102007030120A1 | 2009-01-02 | |||
| US6250156B1 | 2001-06-26 |
Attorney, Agent or Firm:
ZINKE, Thomas (Innere Wiener Strasse 17, München, DE)
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