Method for actively balancing a vibration structure gyroscope se

Details Method for actively balancing a vibration structure gyroscope se Method for actively balancing a vibration structure gyroscope se

1996-04-05

1997-04-15

Chapman, John E.

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

73 177, 73 182, G01P 904, G01C 1956

Patent

active

056211716

ABSTRACT:
A vibrating structure gyroscope sensing element structure of ring-like or substantially cylindrical form made of ferromagnetic material is actively balanced by applying a variable strength magnetic field across a predetermined section of the circumference of the sensing element structure differentially to shift the resonant frequency of one or the other of the primary and secondary vibration modes (1,2) thereof by an amount sufficient to bring the two mode resonant frequencies into balance.

REFERENCES:
patent: 4793195 (1988-12-01), Koning
patent: 4951508 (1990-08-01), Loper et al.
patent: 5445007 (1995-08-01), Varnham et al.

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