Accelerometer manufacturing method

Details Accelerometer manufacturing method Accelerometer manufacturing method

1983-12-19

1985-03-19

Hall, Carl E.

Metal working

Piezoelectric device making

29593, 310312, 310329, 367166, 367180, H01L 4122

Patent

active

045050147

ABSTRACT:
A method for manufacturing a compound accelerometer that is maximally sensitive to a desired acceleration vector to the exclusion of orthogonal vectors. The compound accelerometer is made by combining two simple accelerometer units. The simple accelerometer units consist of a hollow container closed at each end by a piezo-electric transducer. The two transducers are oppositely polarized and are selected to have a desired combined series capacitance value. The container is partially filled with a volume of heavy liquid and the accelerometer is excited. During excitation, the output voltage is continuously measured and the volume of liquid is microadjusted until the output voltage equals a prescribed level. The outputs of the individual transducers are measured, the residual voltage difference is tabulated and the dominant transducer is identified. Two simple accelerometer units having the same residual voltage difference are secured together with the dominant transducers facing oppositely with respect to each other.

REFERENCES:
patent: 3555503 (1971-01-01), Morris
patent: 4334296 (1982-06-01), Hall, Jr.
patent: 4395908 (1983-08-01), Shopland
patent: 4455500 (1984-06-01), Savit et al.

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