Abstract
The vectorial force sensor with elastic surface waves according to the invention comprises a mechanical part, for example a lamella, subjected to a stress (σ). One face of the lamella incorporates transducers maintaining an elastic surface wave. The system according to the invention possesses three magnetic means inducing in the lamella three orthogonal magnetic fields, one of which is parallel to the direction of polarization of the elastic surface wave. Means are provided to make it possible to measure the influence of each magnetic field on the speed of propagation of the elastic surface wave. Such a system can be used particularly in accelerometers.
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