Microgyroscope

G - Physics – 01 – C

Patent

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G01C 19/56 (2006.01)

Patent

CA 2729111

The invention relates to a microgyroscope for determining rotational movements about an x, y or z axis. At least one anchor is fastened to a Substrate. A plurality of, in particular four, masses which oscillate radially with respect to the anchor are fastened to the anchor by means of Springs. Drive elements are used to vibrate at least individual ones of the masses in an oscillatory manner in the x or y direction in order to produce Coriolis forces when the Substrate is deflected. Sensor elements are used to detect deflections of the masses on account of the Coriolis forces produced. The oscillating masses are connected to at least one further, non-oscillating mass which can, however, rotate together with the oscillating masses on the Substrate about the at least one anchor. A further sensor element is associated with this further mass.

L'invention concerne un microgyroscope pour déterminer des mouvements de rotation autour d'un axe x, y ou z. Au moins un dispositif d'ancrage est fixé sur un support. Plusieurs masses, en particulier quatre masses oscillant radialement par rapport au dispositif d'ancrage y sont fixées par des ressorts. Des éléments d'entraînement servent à faire osciller au moins certaines des masses dans la direction x ou y pour produire des forces de Coriolis lors d'une déviation du support. Les déviations des masses dues aux forces de Coriolis produites sont détectées par des éléments capteurs. Les masses oscillantes sont reliées à au moins une autre masse non oscillante mais pouvant tourner avec les masses oscillantes sur le support autour du ou des dispositifs d'ancrage, cette autre masse étant associée à un autre élément capteur.

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