Patent ID: 6718826
Filing Date: 2004-04-13
Classification: G01C,G01P

Abstract:
An angular accelerometer comprising:a substrate; a fixed electrode supported on the substrate and including a first plurality of fixed capacitive plates; a rotational inertia mass substantially suspended over a cavity and including a central opening and a plurality of movable capacitive plates arranged to provide a capacitive coupling with said first plurality of fixed capacitive plates; a central member fixed to said substrate and located substantially in the central opening of said rotational inertia mass; an outer member supported on the substrate and located radially outward from the rotational inertia mass; a first plurality of support arms extending between said central member and said rotational inertia mass; and a second plurality of support arms extending between the rotational inertia mass and the outer member, wherein the first and second plurality of support arms allow rotational movement of the rotational inertia mass upon experiencing an angular acceleration about a sensing axis.