Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1985-12-02
1987-12-01
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310321, H01L 4108
Patent
active
047106689
ABSTRACT:
The invention provides a string resonator vibrating under flexion whose oscillation is maintained by piezoelectric, electrostatic or magnetic exitation means.
Decoupling is obtained by inertia masses which oscillate in the vibration plane of the string, between the string and fixing supports, with a movement of rotation about an axis orthogonal to the vibration plane of the string and at the level of flexible elements. The resonator is easy to manufacture, inexpensive and hase a good coefficient of quality. It may be used for force, pressure sensors or gyroscopes.
REFERENCES:
patent: 3470400 (1969-09-01), Weisbord
patent: 3479536 (1969-11-01), Norris
patent: 4215570 (1980-08-01), Eer Nisse
patent: 4321500 (1982-03-01), Paros et al.
patent: 4445065 (1984-04-01), Albert
patent: 4446394 (1984-05-01), Albert
patent: 4656383 (1987-04-01), Albert
patent: 4658174 (1987-04-01), Albert
patent: 4658175 (1987-04-01), Albert
Prior Art of Single Isolator Beam Resonator by W. C. Albert, The Singer Co., Fairfield, N.J. 07006, 1978, (12 pages).
Force Sensing Using Quartz Crystal Flexure Resonators by William C. Albert, The Singer Co., Fairfield, N.Y. 07006, (1984 IEEE), pp. 233-239.
Vibrating Quartz Crystal Beam Accelerometer by William C. Albert, The Singer Co., Fairfield, N.J. 07006, ISA; 1982, pp. 33-43.
Technical Report on the Quartz Resonator Digital Acceletometer by Norman R. Serra, Litton Systems, Inc., Woodland Hills, CA, pp. 487-516, May 1968.
Fima Henri
Janiaud Denis
Budd Mark O.
Crouzet
Office National d'Etudes et de Recherche Aerospatiales (O.N.E.R.
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