Position sensor
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United States of America Patent
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Nov 4, 2003
Issued Date -
N/A
app pub date -
Oct 23, 2001
filing date -
Apr 23, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides a position sensor which is suitable for use in a piston and cylinder assembly. The position sensor includes a movable field modifying member which is operable to vary the inductance of a sensor winding, whereby the position of the field modifying member relative to the sensor winding can be determined by monitoring the inductance of the sensor winding. The position sensor also includes a compensation winding which is arranged to have a common coupling with the field modifying member whereby a signal output from the compensation winding can be used to compensate for variations in the signal level output by the sensor winding caused by, for example, temperature variations of the system.
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