Gyro sensor of an electrostatic driving and capacitance...

Details Gyro sensor of an electrostatic driving and capacitance... Gyro sensor of an electrostatic driving and capacitance...

2008-01-29

2008-01-29

Chapman, John E. (Department: 2856)

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

Reexamination Certificate

active

07322237

ABSTRACT:
A gyro sensor having a vibrator and a start circuit generates an oscillation encouraging signal by boosting a first voltage to a voltage of the signal in response to a start signal of a start frequency sent from the start circuit. The vibrator is vibrated in response to the oscillation encouraging signal. When the vibrator is self-excited, the vibrator outputs a first detecting signal indicating an oscillating amplitude and oscillating frequency in the vibration of the vibrator. The sensor boosts the first voltage to a second voltage in response to the first detecting signal and generates a driving signal of a driving frequency and the second voltage. The self-excitation of the vibrator is continued in response to the driving signal. The vibrator outputs a second detecting signal indicating a yaw added to the vibrator. The sensor generates a sensor signal corresponding to the yaw from the second detecting signal.

REFERENCES:
patent: 5794080 (1998-08-01), Watanabe et al.
patent: 6220094 (2001-04-01), Ichinose et al.
patent: 6412347 (2002-07-01), Kuroda et al.
patent: 6497147 (2002-12-01), Kato et al.
patent: 2005/0274141 (2005-12-01), Kutsuna et al.
patent: 62-052410 (1987-03-01), None
patent: 2005-351820 (2005-12-01), None

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