Device for measuring displacement including a displacement sensor with a detection coil and excitation coils
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United States of America Patent
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Jun 13, 2006
Grant Date -
Oct 21, 2004
app pub date -
Jun 18, 2002
filing date -
Jun 20, 2001
priority date (Note) -
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Abstract
A displacement measuring device for detecting a relative position of an object by interposing the object between a set of at least two displacement sensors. The displacement sensor may comprise of a core body that includes a detection coil and a pair of excitation coils. The sensor may produce a differential output based on the balance of the magnetic flux between the excitation coils with satisfactory linearity and/or higher sensitivity, in which the impedance due to the DC resistance component or the like is removed.
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