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AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsDavinson CASTANO CANO, Mathieu GROSSARD, Arnaud HUBERT
Estimating the term…
A resonant sensor includes a proof body that can be subjected to a torque of forces produced by an external mechanical structure, the body comprising at least: a first interface and a second interface that can each come into contact with the structure; at least two sensitive elements each arranged between these two interfaces; a sensitive element comprising a plate embedded in a frame secured mechanically to the interfaces, the frame being fixed to the interfaces by two opposite corners, the other two corners being free, a local increase in weight being produced in each corner; each plate being able to resonate under the effect of local mechanical excitations produced at particular points by excitation transducers bearing the plate at several resonant frequencies, sensors picking up the resonant signals produced at the particular points, measurement means measuring the resonant frequency shifts of signals which are linear combinations of the resonant signals picked up, the shifts being a function of mechanical stresses induced by the forces and transmitted to the plate by the frame, the components of the torque of forces being determined from the resonant frequency shifts measured on the plates of the sensitive elements.
A resonant force sensor, wherein it comprises a proof body that can be subjected to a torque of forces produced by an external mechanical structure, said body comprising at least:
The sensor as claimed in 1, wherein each plate comprises six particular excitation points, two points being placed on a first axis of symmetry and arranged symmetrically with respect to the second axis of symmetry, the other four points being arranged on either side of these axes of symmetry such that the set of six points forms a hexagon.
Dependencies are inferred from the claim text.