| US 7,481,110 B2 | ||
| Method for quadrature-bias compensation in a Coriolis gyro, as well as a Coriolis gyro which is suitable for this purpose | ||
| Eberhard Handrich, Kirchzarten (Germany); and Wolfram Geiger, Freiburg (Germany) | ||
| Assigned to LITEF GmbH, Freiburg (Germany) | ||
| Appl. No. 10/584,483 PCT Filed Nov. 26, 2004, PCT No. PCT/EP2004/013447 § 371(c)(1), (2), (4) Date Jun. 23, 2006, PCT Pub. No. WO2005/066585, PCT Pub. Date Jul. 21, 2005. |
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| Claims priority of application No. 103 60 962 (DE), filed on Dec. 23, 2003. | ||
| Prior Publication US 2007/0144255 A1, Jun. 28, 2007 | ||
| Int. Cl. G01P 9/04 (2006.01); G01C 19/56 (2006.01) | ||
| U.S. Cl. 73—504.12 [73/501.14; 73/504.16] | 8 Claims |
| 4. A Coriolis gyro, having a first resonator which is in the form of a coupled system comprising a first and a second linear
oscillator, with the first oscillator being attached to a gyro frame of the Coriolis gyro by means of first spring elements,
and the second oscillator being attached to the first oscillator by means of second spring elements, having,
a device for production of an electrostatic field by means of which the alignment of the two oscillators with respect to one
another can be varied, in which the electrostatic field produces a constant electrostatic force which varies the alignment
angle of the first spring elements with respect to the gyro frame and/or the alignment angle of the second spring elements
with respect to the first oscillator,
a device for determination of any quadrature bias of the Coriolis gyro, and
a control loop, by means of which the strength of the electrostatic field is regulated as a function of the determined quadrature
bias such that the determined quadrature bias is as small as possible.
|