Patent ID: 8117917

Claim:
A method of making an accelerometer comprising: a) generating a model of an accelerometer with flexures that flexibly connect a proof mass at a first end to a first one of opposing walls of a housing, a first resonator attached to a first surface of the proof mass at an end of the proof mass opposite the first end of the proof mass and to a housing wall that is not attached to the flexure, a second resonator attached to a second surface of the proof mass and the housing wall that receives the first resonator; b) calculating K ip from pendulum droop as the angular displacement of a center of gravity of the proof mass relative to a center of rotation of the flexures for 1G input axis acceleration; c) calculating K ip from resonator nonlinearity; d) repeating (a-c) with one or more adjusted features until the two K ip values calculated are equal and opposite in sign; based on the adjusted features, providing a housing comprising at least two opposing interior walls; forming a proof mass and one or more flexures that flexibly connect the proof mass at a first end to a first one of the opposing walls of the housing; attaching a first resonator to a first surface of the proof mass at an end of the proof mass opposite the first end of the proof mass and to the housing wall that is not attached to the flexure; and attaching a second resonator to a second surface of the proof mass and the housing wall that receives the first resonator, wherein the second surface is on an opposite side of the proof mass as the first surface.