Multisensor assembly with angular rate piezoelectric crystal bea

Details Multisensor assembly with angular rate piezoelectric crystal bea Multisensor assembly with angular rate piezoelectric crystal bea

1986-09-02

1987-12-29

Chapman, John

Measuring and testing

Speed, velocity, or acceleration

Angular rate using gyroscopic or coriolis effect

73510, 73DIG4, 310353, G01P 902

Patent

active

047152273

ABSTRACT:
In a multisensor assembly for detecting angular rates and linear accelerations, a diamond-shaped piezoelectric crystal beam is used to restrain a gyroscopic element to a base of the multisensor assembly. The diamond-shaped piezoelectric crystal is fixed to both the gyroscopic element and the base of the assembly by means of wires in an orientation orthogonal to the hinge axis and the spin axis of the assembly. This allows the piezoelectric crystal to experience only one degree of freedom. To improve the accuracy of the output electrical signal, oblong electrodes are placed on opposite surfaces of the piezoelectric crystal beam.

REFERENCES:
patent: 3464259 (1969-09-01), Farr
patent: 4621529 (1986-11-01), Pittman
E. C. Thompson, "Double Mount for Each Electrode of a Crystal to Prevent Failure," Western Electric Technical Digest, No. 26, (Apr. 1972), pp. 59-60.

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