Patent ID: 8006557
Filing Date: 2011-08-30
Classification: G01C,G01P

Abstract:
1. A method comprising: providing a first cantilever beam comprising a first mass, a first attachment point, and a first cantilever orientation, wherein the first mass has a first center of mass that is coplanar with a first plane, and wherein the first attachment point is coplanar with a second plane, and wherein the first plane and the second plane are each substantially orthogonal to a first axis, and wherein the first plane and the second plane are displaced on the first axis, and wherein the first cantilever orientation forms a first angle with a second direction that is aligned with a second axis that is orthogonal to the first axis, and further wherein the first angle is between 90 degrees and 270 degrees; providing a second cantilever beam comprising a second mass, a second attachment point, and a second cantilever orientation, wherein the second mass has a second center of mass that is coplanar with the first plane, and wherein the second attachment point is coplanar with the second plane, and further wherein the second cantilever orientation and the second direction form a second angle that is between −90 degrees and 90 degrees; sensing a first motion of the first mass along a first direction that is aligned with the first axis; sensing a second motion of the second mass along the first direction; imparting a first periodic motion along the first direction on each of the first mass and the second mass; and comparing the first motion and the second motion.