Patent ID: 8141424
Filing Date: 2012-03-27
Classification: G01C

Abstract:
1. A gyroscope comprising: an oscillating proof mass for generating a torque in response to angular velocity; a sensing frame coupled to the oscillating proof mass, wherein the sensing frame moves in response to the torque, the sensing frame comprising: a base; a first rail; constrained to move along a first axis parallel to the base; a second rail substantially parallel to said first rail; said second rail constrained to move along the first axis; at least two guiding arms ensuring the first rail and the second rail to move in anti-phase fashion along the first axis; a first guiding arm flexibly coupled to the first rail and flexibly coupled to the second rail; a second guiding arm flexibly coupled to the first rail and flexibly coupled to the second rail; the first guiding arm flexibly suspended to the base at a first anchoring point allowing rotation of the first guiding arm around a second axis that is perpendicular to the first axis and normal to the plane; the second guiding arm suspended to the base at a second anchoring point allowing rotation of the second guiding arm around a third axis parallel to the second axis; a plurality of coupling flexures connecting said sensing frame to the oscillating proof mass; and a transducer for sensing motion of the rails along the first axis responsive to said angular velocity.