Patent ID: 8011244
Filing Date: 2011-09-06
Classification: G01C,H03H

Abstract:
1. A microsystem comprising: a substrate; a first oscillating mass and a second oscillating mass adjacent the first oscillating mass, each of the first and second oscillating masses having a first side and a second side opposite the first side, the first side of the first oscillating mass facing the second side of the second oscillating mass; an excitation device that drives the first and second oscillating masses in an excitation direction; a first elastic suspension having a first end fixed to the first side of the first oscillating mass, a second end fixed to the substrate by a first anchoring point, and a first intermediate zone arranged between the first end and the second end, the first elastic suspension having a first stiffness constant in the excitation direction and a second stiffness constant in another direction, the second stiffness constant being larger than the first stiffness constant; a second elastic suspension having a first end fixed to the second side of the second oscillating mass, a second end fixed to the substrate by a second anchoring point, and a second intermediate zone arranged between the first end and the second end, the second elastic suspension having a first stiffness constant in the excitation direction and a second stiffness constant in another direction, the second stiffness constant being larger than the first stiffness constant, wherein the first and second intermediate zones of the first and second elastic suspensions are placed on either side of an axis parallel to the excitation direction; and a coupling device coupling the first oscillating mass with the second oscillating mass and configured to produce an anti-phase movement of the first and second oscillating masses during excitation in the excitation direction, the first intermediate zone of the first elastic suspension being attached to the second intermediate zone of the second elastic suspension by the coupling device.