Vectorial force sensor with elastic surface waves

Details Vectorial force sensor with elastic surface waves Vectorial force sensor with elastic surface waves

1985-01-18

1986-01-28

Kreitman, Stephen A.

Measuring and testing

Vibration

By mechanical waves

73517R, 7386268, 310313B, G01P 1508, G01N 2900

Patent

active

045663297

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 (.sigma.). 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.

REFERENCES:
patent: 4096740 (1978-06-01), Sallee
patent: 4318061 (1982-03-01), Castera et al.
patent: 4515016 (1985-05-01), Hartemann et al.

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