Position sensor
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United States of America Patent
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-
Jan 4, 2005
Grant Date -
Sep 2, 2004
app pub date -
Jan 6, 2004
filing date -
Oct 30, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A Position Sensor comprises: one or more excitation windings; a signal generator adapted to apply excitation signals to the or each excitation winding; tag means displaceable relative to said excitation windings; one or more sensor windings electromagnetically coupled to said excitation windings such that in response to said excitation signals being applied to said excitation windings, there is generated sensed signal in the or each sensor winding; and a signal processor adapted to process said sensed signals to determine the position of said tag means in any location in the X, Y and Z planes essentially in accordance with phase values or in accordance with phase values and amplitude values.
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