Patent ID: 6250157
Filing Date: 2001-06-26
Classification: G01C

Abstract:
An angular rate sensor comprising:a pair of masses located symmetrically with respect to a point on a x-y plane and adapted to vibrate in the x-direction;a support beam connected to each of the masses for movement in the x-direction, and located symmetrically with respect to said point;a center anchor for supporting the support beam at said point;detecting means located symmetrically with respect to said point for detecting rotational vibration about said point when an angular rate perpendicular to a driving direction of the masses occurs;a connecting beam located between said masses symmetrically with respect to said point, one end of the connecting beam being operatively connected to said support beam and the other end of the connecting beam being operatively connected to said detecting means; anddriving means for vibrating at least one of the masses in an anti-phase manner.