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Arrangement for measuring angular velocity

DC CAFC
  • US 6,467,349 B1
  • Filed: 09/12/2000
  • Issued: 10/22/2002
  • Est. Priority Date: 01/23/1998
  • Status: Expired due to Term
First Claim
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1. A sensor adapted to respond to a rotation, said sensor comprising a body formed from a substantially planar substrate, said body incorporating a beam having a longitudinal axis, the beam having two opposed ends, each end being adapted to be fixed in position, the beam being provided with at least one inertia mass connected to the beam at a predetermined position, the body being associated with means for exciting a first oscillation of said at least one inertia mass substantially about an axis perpendicular to the plane of the substrate, there being means for detecting a second oscillation of said at least one inertial mass, substantially around an axis coincident with the longitudinal axis of the beam, which second oscillation is caused by the Coriolis force that arises when the body is subjected to rotation around an axis angularly displaced from perpendicular to said plane, but perpendicular to the said axis of the beam, the beam being configured so that the beam bends most easily in one predetermined direction, that direction making an acute angle with said plane, so that the direction is neither parallel with, nor perpendicular to said plane, so that the first oscillation may be initiated by an excitation force which is not parallel with said plane.

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