Patent ID: 8215168
Filing Date: 2012-07-10
Classification: G01C

Abstract:
1. A rotation rate sensor for sensing a rotation Ω by which the sensor is rotated, the sensor comprising: a substrate; a driving and sensing arrangement located substantially flat in an X-Y plane above a substrate surface of the substrate and having a center; wherein the driving and sensing arrangement comprises a drive mass and a sense mass that are arranged at different spacings from the center of the driving and sensing arrangement symmetrically about the center; wherein oscillation modes of the drive mass and the sense mass are partially transmittable onto one another and are partially decoupled; wherein the rotation Ω is sensed in that a tilting of the sense mass out of a surface plane of the driving and sensing arrangement is sensed; wherein a first one of the drive and sense masses that has a greater spacing to the center is tilted under the effect of Coriolis force out of the surface plane; wherein said first one of the drive and sense masses is connected by symmetrically arranged external anchors to the substrate such that a restoring action for the tilting action of said first one of the drive and sense masses is assisted by the external anchors.