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Title: Double resonator cantilever accelerometer

Abstract

A digital quartz accelerometer includes a pair of spaced double-ended tuning forks fastened at one end to a base and at the other end through a spacer mass. Transverse movement of the resonator members stresses one and compresses the other, providing a differential frequency output which is indicative of acceleration.

Inventors:
Publication Date:
OSTI Identifier:
5827741
Application Number:
ON: DE83018057
Assignee:
SNL; ERA-08-054779; EDB-83-179039
DOE Contract Number:
AC04-76DP00789
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; ACCELEROMETERS; DESIGN; RESONATORS; MECHANICAL VIBRATIONS; ELECTRONIC EQUIPMENT; EQUIPMENT; MEASURING INSTRUMENTS; 440300* - Miscellaneous Instruments- (-1989)

Citation Formats

Koehler, D.R. Double resonator cantilever accelerometer. United States: N. p., 1982. Web.
Koehler, D.R. Double resonator cantilever accelerometer. United States.
Koehler, D.R. 1982. "Double resonator cantilever accelerometer". United States. doi:.
@article{osti_5827741,
title = {Double resonator cantilever accelerometer},
author = {Koehler, D.R.},
abstractNote = {A digital quartz accelerometer includes a pair of spaced double-ended tuning forks fastened at one end to a base and at the other end through a spacer mass. Transverse movement of the resonator members stresses one and compresses the other, providing a differential frequency output which is indicative of acceleration.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1982,
month = 9
}
  • A digital quartz accelerometer includes a pair of spaced double-ended tuning forks fastened at one end to a base and at the other end through a spacer mass. Transverse movement of the resonator members stresses one and compresses the other, providing a differential frequency output which is indicative of acceleration.
  • A digital quartz accelerometer includes a pair of spaced double-ended tuning forks fastened at one end to a base and at the other end through a spacer mass. Transverse movement of the resonator members stresses one and compresses the other, providing a differential frequency output which is indicative of acceleration.
  • Resonances can be tuned in dielectric resonators in order to construct single-resonator, negative-index metamaterials. For example, high-contrast inclusions in the form of metallic dipoles can be used to shift the first electric resonance down (in frequency) to the first magnetic resonance, or alternatively, air splits can be used to shift the first magnetic resonance up (in frequency) near the first electric resonance. Degenerate dielectric designs become especially useful in infrared- or visible-frequency applications where the resonator sizes associated with the lack of high-permittivity materials can become of sufficient size to enable propagation of higher-order lattice modes in the resulting medium.
  • A cavity resonator arrangement for a single mode laser is disclosed. A double Michelson interferometer is substituted for one of the mirrors of a conventional Fabry-Perot interferometer. The positions of the three mirrors of this double Michelson interferometer are positioned with respect to the mirror limiting the cavity resonator through dc controlled piezoelectric shims.
  • The laser comprises an amplifying medium which sustains the oscillation within two resonators, one resonator being formed by the mirrors M/sub 1/ and M'/sub 1/ and the other being formed by the mirrors M/sub 2/ and M'/sub 2/. The quality factor of the second resonator is higher than that of the first resonator. The time-duration of the pulse extracted from the first resonator is adjusted by modifying the quality factor of the second resonator. The double-resonator laser serves to generate pulses of very small width, especially in dye lasers, and to adjust pulse-widths in such applications as telemetry.