Patent ID: 6578420
Filing Date: 2003-06-17
Classification: G01C

Abstract:
A unitary three-axis micro-gyro structure that comprises:a monolithic substrate that defines a plane of the micro-gyro, and three micro-gyro devices formed simultaneously as a layer on the substrate by successive steps of depositing material, delineating desired material shapes by lithography, and etching to remove unwanted material, the first micro-gyro device being so constructed as to measure angular velocity of the micro-gyro structure around a first rate axis extending in the plane of the micro-gyro, the second micro-gyro device being so constructed as to measure angular velocity of the micro gyro structure around a second rate axis extending in the plane of the micro-gyro and perpendicular to the first rate axis; and the third micro-gyro device being so constructed as to measure angular velocity of the micro-gyro structure around a third rate axis perpendicular to the plane of the micro-gyro.