METHOD AND SYSTEM FOR CONTROL AND READOUT OF TUNING FORK GYROSCOPE

METHOD AND SYSTEM FOR CONTROL AND READOUT OF TUNING FORK GYROSCOPE

A tuning fork sensor system places a controlled bias on the proof-mass drive-axis electrodes to cancel the quadrature charge.. Also, its charge amplifiers employ a field-effect transistor biased slightly into the triode region so that it behaves as a very large value resistor. In addition, it uses a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: WARD, Paul A, ELLIOTT, III, Richard D, GUYON, Daniel Joseph
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
GYROSCOPIC INSTRUMENTS
MEASURING
MEASURING DISTANCES, LEVELS OR BEARINGS
NAVIGATION
PHOTOGRAMMETRY OR VIDEOGRAMMETRY
PHYSICS
SURVEYING
TESTING
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Beschreibung
Zusammenfassung:A tuning fork sensor system places a controlled bias on the proof-mass drive-axis electrodes to cancel the quadrature charge.. Also, its charge amplifiers employ a field-effect transistor biased slightly into the triode region so that it behaves as a very large value resistor. In addition, it uses a phase-locked loop having a special loop filter in order to optimize performance by rejecting off-frequency drive feedthrough to the motor pick-off while resulting in very low phase wander for the demodulation references.