Non-contacting position measuring system
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United States of America Patent
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Oct 13, 2009
Grant Date -
Sep 14, 2006
app pub date -
May 18, 2006
filing date -
Nov 20, 2003
priority date (Note) -
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Abstract
A non-contacting position measuring system comprising a sensor that includes a measuring coil which can be energized with alternating current, where the measuring coil comprises at least two voltage taps, an electrically or magnetically conductive object to be measured which is assigned to the sensor, and an evaluation circuit, where the sensor and the object to be measured can be displaced relative to one another in a longitudinal direction of the measuring coil. The position-measuring system presented is formed in such a manner that the object to be measured comprises at least one marking affecting the impedance of the measuring coil between two voltage taps so that the evaluation circuit provides an output signal correlating with the position of the object to be measured in relation to the voltage taps.
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