Acceleration detection type gyro device
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United States of America Patent
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-
Dec 30, 2003
Grant Date -
Jul 3, 2003
app pub date -
Jan 2, 2003
filing date -
Feb 23, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An acceleration-detecting type gyro apparatus of an electrostatic supporting type, in which displacements of a gyro rotor are actively made zero is proposed. The acceleration-detecting type gyro apparatus includes: a gyro case; a gyro rotor which is supported within the gyro case by electrostatic supporting forces such that the gyro rotor is not in contact with the gyro case; electrostatic supporting electrodes for generating the electrostatic supporting forces; a rotor drive system for rotating the gyro rotor around the spin axis at high speed; a displacement-detection system for detecting displacements of the gyro rotor; and a restraining system having a feedback loop for correcting control voltages applied to the electrostatic supporting electrodes so that displacements of the gyro rotor become zero, the gyro rotor is annular-shaped, and the electrostatic supporting electrodes are disposed in a manner of surrounding the gyro rotor.
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