Vibrating gyroscope using a tuning fork vibrator

Details Vibrating gyroscope using a tuning fork vibrator Vibrating gyroscope using a tuning fork vibrator

2005-06-14

2005-06-14

Chapman, John E. (Department: 2856)

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

Reexamination Certificate

active

06904802

ABSTRACT:
A vibrating gyroscope includes a tuning fork vibrator having two legs defined by piezoelectric members which are polarized in opposite directions of thickness which are bonded to each other between a first principal surface and a second principal surface, so as to have a tuning fork shape with one fixed end. Two electrodes divided in a width direction of the two electrodes are provided on a first principal surface of the respective two legs and an electrode is provided on a second principal surface of the respective two legs. Among four electrodes provided on the first principal surface of the respective two legs, two electrodes that are disposed inside-to-inside or outside-to-outside are connected together to define a driving electrode, and the remaining two electrodes define a detection electrode and a feedback electrode. All of the electrodes provided on the second principal surfaces of the two legs are connected together, and are connected to a reference voltage or are floating.

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