Patent ID: 7284430
Filing Date: 2007-10-23
Classification: G01C

Abstract:
1. A three-degrees of freedom (DOF) MEMS inertial micromachined gyroscope with a drive direction, a sense direction, and a direction perpendicular to the drive and sense directions comprising: a 2-DOF sense-mode oscillator means having a frequency response curve with two resonant peaks in a sense mode, the 2-DOF sense-mode oscillator means for operating at a frequency in a generally flat region of a frequency response curve of the 2-DOF sense mode oscillator means between the two resonant peaks of the frequency response curve; a 1-DOF drive-mode oscillator means for operating at resonance in a drive mode at a frequency in the flat region of the frequency response curve of the 2-DOF sense mode oscillator means to achieve amplified drive-mode amplitudes; and a planar substrate on which the 2-DOF sense-mode oscillator means and the 1-DOF drive mode oscillator means are disposed.