System and method for temperature independent measurement of standoff distance using an eddy current sensor
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United States of America Patent
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Jan 29, 2008
Grant Date -
Mar 22, 2007
app pub date -
Sep 21, 2005
filing date -
Sep 21, 2005
priority date (Note) -
Expired
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Abstract
An embodiment of the invention generally relates to a temperature-independent method of determining an engine health parameter, namely stand-off distance, between an eddy current sensor and a conductive element. The method includes receiving a signal from the eddy current sensor and demodulating a waveform from the received signal. The method also includes determining a predetermined set of substantially temperature-independent parameters from the waveform and determining the stand-off distance based on the predetermined set of substantially temperature-independent parameters.
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