Machine element or mechanism – Gyroscopes – Gyroscope control
Patent
1982-07-02
1986-01-14
Bonck, Rodney H.
Machine element or mechanism
Gyroscopes
Gyroscope control
74 546, 74 56R, G01C 1928, G01C 1930
Patent
active
045639094
ABSTRACT:
A system for electronically tuning and suppressing 2N rectification torques in a dynamically tuned free rotor gyroscope with a universal hinge, or a plurality of universal hinges. The system includes means to adjust the frequency of the drive shaft of the gyroscope to a speed such that the rotor precession due to direct elastic restraint torques is eliminated. In addition, the system includes means for measuring the two degree of freedom angular deviations of the principal axis of the rotor with respect to the gyroscope case, as well as the angular deviations of the shaft spin axis relative to the gyroscope case. The sensed angular deviations of both the rotor and shaft drive a torque generator which produces a torque on the rotor for nulling torque due to angular vibrations of the drive shaft with respect to the rotor. The controlled phasing and gain of the nulling torque provides both average bending compliance tuning and suppression of the 2N rectification.
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Ahn Byong-Ho
Carroll Raymond
Bonck Rodney H.
The Charles Stark Draper Laboratory Inc.
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