Multisensor with parametric rotor drive

Details Multisensor with parametric rotor drive Multisensor with parametric rotor drive

1998-07-31

2000-07-11

Moller, Richard A.

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

G01P 344, G01P 900

Patent

active

060855908

ABSTRACT:
A multisensor includes a ring-like piezoelectric drive. The ring, which may comprise a closed configuration formed of straight ring segments, surrounds a rotor assembly formed of a pair of rotors, each having a central hub. Vanes extend radially from the central hubs of the rotors to the inner surface of the ring and are fixed to the ring adjacent the intersections of the substantially-straight ring segments. The ring is formed of a laminate of layers of piezoelectric material. Adjacent layers are of opposite piezoelectric polarity whereby an a.c. signal drives the alternating expansions and contractions of pairs of laminated layers.

REFERENCES:
patent: 4621529 (1986-11-01), Pittman
patent: 4715227 (1987-12-01), Pittman
patent: 4841773 (1989-06-01), Stewart
patent: 4996877 (1991-03-01), Stewart et al.
patent: 5007289 (1991-04-01), Stewart et al.
patent: 5065627 (1991-11-01), Stewart et al.

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