Vibration-resistant gyrometer

A gyrometer comprising:

• 1) a first dual-mass gyrometer comprising
• a planar substrate extending in a plane,
• first left and right inertial masses comprising:
• first left and right frames, respectively, aligned along a first excitation axis X1 parallel to an excitation direction, and mounted with the ability to slide on the substrate along said first excitation axis X1, and
• first left and right central masses, respectively, mounted with the ability to slide in the first left and right frames, respectively, parallel to a first detection direction perpendicular to the excitation direction;
• a first oscillation-inducing actuator inducing oscillation, in the excitation direction, of the first left and right inertial masses and of a first coupling spring;
• a first rocker mounted with the ability to rotate on the substrate about a first rocker pivot, first left and right ends of the first rocker being connected to the first left and right central masses, respectively;
• and
• a first detector of the angular position of the first rocker about the first rocker pivot;
• 2) second left and right inertial masses aligned along a second axis X2 parallel to said excitation direction, and mounted with the ability to slide on the substrate along the second axis;
• the gyrometer further comprising left and right arms, mounted with the ability to rotate on the substrate about a left arm pivot and a right arm pivot, respectively, having axes perpendicular to the substrate,
• the left arm mechanically coupling the first left frame with the second left inertial mass, and the right arm mechanically coupling the first right frame with the second right inertial mass;
• the first coupling spring being interposed between said first left and right frames and/or a second coupling spring being interposed between said second left and right inertial masses.