Coriolis force gyroscope with high sensitivity
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United States of America Patent
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Apr 7, 2009
Grant Date -
Jul 24, 2008
app pub date -
Aug 26, 2007
filing date -
May 31, 2005
priority date (Note) -
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Abstract
A gyroscope includes a substantially cylindrical resonator mounted in a housing, and a bottom plate attached to the resonator. A plurality of openings are arranged circumferentially and equiangularly on the bottom plate. A plurality of piezoelectric elements arranged between the openings on the bottom plate. The number of openings can be anywhere between 2 and 16, with eight openings preferred, with a corresponding number of piezoelectric elements. Preferably, substantially the entire available area of the bottom plate is taken up by the piezoelectric elements. The piezoelectric elements can be inside or outside the resonator.
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