Method and apparatus for measuring acceleration or mechanical fo

Details Method and apparatus for measuring acceleration or mechanical fo Method and apparatus for measuring acceleration or mechanical fo

1996-02-07

1997-10-14

Chapman, John E.

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

310329, 310333, G01P 1509

Patent

active

056774877

ABSTRACT:
A method for measuring acceleration or mechanical forces, the acceleration causing inertial forces, uses a transducer or accelerometer in which at least one piezoelectric element is influenced by a shearing force substantially parallel to the polarization axis of the piezoelectric element, where the shearing force is created by a component of a mechanical or an inertial force substantially perpendicular to the polarization axis. A transducer for measuring acceleration or mechanical forces, the acceleration causing inertial forces, includes at least one piezoelectric element and at least two spaced surfaces abutting the piezoelectric element and arranged so that they are mutually displaced by a component of a mechanical or an inertial force acting substantially in a direction perpendicular to the polarization axis of the piezoelectric element.

REFERENCES:
patent: 3104334 (1963-09-01), Bradley, Jr. et al.
patent: 3113223 (1963-12-01), Smith et al.
patent: 3545283 (1970-12-01), McGunigle
patent: 4180892 (1980-01-01), Jensen
patent: 4211951 (1980-07-01), Jensen
patent: 4941243 (1990-07-01), Cleveland
patent: 5052226 (1991-10-01), Schmid
patent: 5155408 (1992-10-01), Takeuchi

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