Integrated micro actuator and LVDT for high precision position measurements
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United States of America Patent
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Dec 13, 2016
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N/A
app pub date -
Aug 6, 2013
filing date -
Oct 14, 2008
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Abstract
A single housing with a non-ferromagnetic piezo-driven flexure has primary and secondary coil forms of different diameters, one coaxially inside the other, integrated in the flexure. The cylinders defining the planes of the primary and secondaries do not spatially overlap. The secondary coil forms may be wound in opposite directions and wired to provide a transformer device. Movement of the primary relative to the secondaries in the direction of the central axis of the coils can be differentially detected with high precision.
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