Angular velocity sensor having a balanced tuning fork structure

Details Angular velocity sensor having a balanced tuning fork structure Angular velocity sensor having a balanced tuning fork structure

1993-07-15

1995-08-29

Williams, Hezron E.

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

310321, 7350416, G01P 904

Patent

active

054450250

ABSTRACT:
An angular velocity sensor having a tuning-fork structure comprising a first vibrator including a first actuator and a first detector each attached to a metal plate and joined orthogonally to each other, and a second vibrator including a second actuator and a second detector each attached to another metal plate and joined orthogonally to each other, the two vibrators being coupled by an electrode block to each other in a generally parallel relationship along the axis of detection of the sensor. The first and second detectors have a rectangular plate shape each holding a piezoelectric element. The rectangular plate shape has a lengthwise edge and a widthwise edge where the lengthwise edge parallel to the axis of detection of the sensor and is longer than the width wise edge. At least one of the lengthwise edges of the detectors has a beveled surface formed by removing metal at an angle from the lengthwise edge of the detector to balance the sensor.

REFERENCES:
patent: 3683213 (1972-08-01), Staudte
patent: 4320320 (1982-03-01), Momosaki et al.
patent: 4628735 (1986-12-01), Kirkpatrick
patent: 4899587 (1990-02-01), Staudte
patent: 4930351 (1990-06-01), Macy et al.
patent: 5045745 (1991-09-01), Umemoto et al.
patent: 5212985 (1993-05-01), Takenaka et al.

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