Patent ID: 6520017
Filing Date: 2003-02-18
Classification: G01P

Abstract:
A micromechanical angular-acceleration sensor comprising:a substrate; an anchoring device provided on the substrate; a torsion spring device; a ring-shaped inertial mass joined to the anchoring device by the torsion spring device, wherein the anchoring device is essentially located in a center of the ring-shaped inertial mass, so that the ring-shaped inertial mass can be elastically deflected from a resting position about at least one rotational axis by an angular acceleration to be detected; a displaceable, first capacitor-plate device attached to the ring-shaped inertial mass; and a stationary, second capacitor-plate device attached to the substrate, wherein the first capacitor-plate device and the second capacitor-plate device are each designed as a respective differential-capacitor device for detecting a parameter indicating the angular acceleration about the at least one rotational axis.