Apparatus and method for retaining phase information for use with a multiple-coil inductive displacement sensor
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United States of America Patent
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Mar 17, 1987
Grant Date -
N/A
app pub date -
Aug 28, 1985
filing date -
Aug 28, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Phase information in a multiple-coil indictive displacement sensor is retained by summing the excitation signal with each of the secondary signals to provide augmented secondary signals which may then be converted to a digital format. A signal processor may then be employed to extract both the magnitude and phase information from the augmented secondary signals by subtracting the magnitude of the primary excitation signal from each of the augmented secondary signals. The resulting signals retain both phase and magnitude information.
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