US 8,573,057 B2 · Sensor mount vibration reduction

Abstract

Techniques are provided for reducing mount vibration in an inertial rate sensor (IRS). For example, if oscillation in an IRS's vibratory members, vibrating along a first axis, cause displacement in the IRS's mount along a second axis, the vibratory members can be aligned so that the vibratory members have some component of movement along the second axis during oscillation. This component of movement can help reduce the displacement of the IRS's mount along the second axis. It can further reduce sensitivity to changes in the boundary conditions of an IRS (e.g., vibrations and other movements at the mount from forces external to the IRS). Vibratory members further can have portions of increased mass at the vibratory members' tips, which can impact the alignment of the vibratory members. These examples, however, are not exhaustive.

Claims20

Dependent claims

An inertial rate sensor comprising:

a base;
and
a plurality of vibratory members coupled with the base and positioned symmetrically about an axis of symmetry, wherein each vibratory member includes:
an elongate dimension extending outward from the base to a tip of the vibratory member;
and
an axis of motion along which the vibratory member is configured to move when driven in oscillation, the axis of motion being perpendicular to the elongate dimension;
wherein the elongate dimension of each vibratory member is angled from the axis of symmetry such that each vibratory member, when driven in oscillation, includes a component of motion parallel to the axis of symmetry.

4 more elements

Dependencies are inferred from the claim text.

Sensor mount vibration reduction

Life of this patent

Sensor mount vibration reduction

Life of this patent

Abstract

Claims20