Measuring and testing – Speed – velocity – or acceleration – Angular rate using gyroscopic or coriolis effect
Patent
1998-07-31
2000-03-28
Chapman, John E.
Measuring and testing
Speed, velocity, or acceleration
Angular rate using gyroscopic or coriolis effect
7350412, G01P 904
Patent
active
060416521
ABSTRACT:
A flexure assembly is provided for coupling and electrically interconnecting the rotors of an inertial multisensor. The rotor assembly is fixed to the base of the multisensor by means of a plurality of outer ring segments that attach to the base. An inner coupling ring is attached at its top and bottom surfaces to trapezoidal spring connectors associated with the rotors. Drive assemblies, each including a pair of radially-directed vanes with paired piezoelectric elements fixed to opposite vane surfaces, are fixed to each rotor. The vanes are connected by trapezoidal connector pieces, which, in turn, connect to the outer ring segments bolted to the base. Radial flexure springs, along with the vanes, are joined to central rotor hubs. Rotor arms also radiate from the rotor hubs. The stiffness of the flexure springs substantially sets the resonant frequency of the coupling flexure assembly that includes the counter-oscillating rotors. Momentum transfer between the rotors is facilitated by the inner ring, which acts as a node, relative to which the rotors counter-oscillate at a common resonant frequency.
REFERENCES:
patent: 5065627 (1991-11-01), Stewart et al.
Chapman John E.
Kramsky Elliott N.
Litton Systems Inc.
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