Automatic adaptive centering apparatus for electrically supporte

Machine element or mechanism – Gyroscopes – Gyroscope control

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74 56D, 308 10, G01C 1930

Patent

active

039540243

ABSTRACT:
Apparatus for centering the inertial member of a gyroscope or an accelerometer wherein the member is maintained in suspension by means of electric fields between electrodes. Three pairs of electrodes are provided, each pair positioned to apply forces on the inertial member along one of three orthogonal axes and each being energized by an electronic channel. A dither signal is introduced into one of the channels. If the inertial member is not perfectly centered between the support electrodes, cross-coupling of electric forces between the channels will occur. Therefore, miscentering of the inertial member will result in appearance of signals in the other two channels corresponding to the dither signal introduced into the first channel. The polarity and the amplitude of such signals are indicative of the direction and the magnitude of miscentering and provide the information which is fed back into the suspension servo to close an automatic adaptive precision centering loop.

REFERENCES:
patent: 3566700 (1971-03-01), Staats
patent: 3619014 (1971-11-01), Quick
patent: 3642334 (1972-02-01), Atkinson
patent: 3697143 (1972-10-01), Klinchuch
patent: 3902374 (1975-09-01), Hoffman et al.

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