Position sensing apparatus and method
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United States of America Patent
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Nov 20, 2007
Grant Date -
Jun 15, 2006
app pub date -
Oct 16, 2003
filing date -
Oct 16, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
There is described an inductive position sensor in which a signal generator applies a excitation signal to an excitation winding formed on a first member, the excitation winding being electromagnetically coupled to at least two resonant circuits formed on a second member which are spaced from each other along a measurement path. The excitation windings are shaped so that the electromagnetic coupling between the exciting winding and each of the resonators varies along the measurement path. In this way, by applying an excitation signal to the excitation winding, respective different signals are induced in the resonators which depend upon the relative position of the first and second members.
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