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Pierre Leger

Alain Jeanroy

Calogero Fiaccabrino

The gyroscopic sensor has a bell-shaped resonator which is fixed along its axis on a substrate. It has a circular edge lying in a plane perpendicular to the axis and at a distance from the point where the resonator is fixed. The substrate carries detection and excitation electrodes that co-operate with the resonator. The detection electrodes are sensitive to an axial component of resonator vibration and the energization electrodes cause vibration at resonance by exerting axial forces.

Gyroscopic sensor and rotation measurement apparatus constituting an application thereof

To measure, in a reference frame, angular displacements of a privileged axis tied to a carrier, angular velocities or angular increments of the carrier are measured about two axes tied to the carrier, which axes are orthogonal to each other and at an angle of about 90.degree. the privileged axis. Said mutually orthogonal axes are caused to rotate at high speed about said privileged axis. The angular positions of said mutually orthogonal axes about the privileged axis are determined continuously relate to a reference position. Their angular displacements are calculated by integrating their angular velocities while taking account of said angular positions of the orthogonal axes about the privileged axis.

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Issy les Moulineaux, France

Pierre Leger