Eddy current error-reduced AC magnetic position measurement system
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United States of America Patent
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-
Jan 9, 2001
Grant Date -
N/A
app pub date -
Oct 29, 1999
filing date -
Oct 29, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A device is disclosed for measuring the position (location and orientation) in the six degrees of freedom of a receiving antenna with respect to a transmitting antenna utilizing multiple frequency AC magnetic signals. The transmitting component consists of two or more transmitting antenna of known location and orientation relative to one another. The transmitting antenna are driven simultaneously by an AC excitation, with each antenna occupying one or more unique positions in the frequency spectrum. The receiving antennas measure the transmitted AC magnetic field plus distortions caused by conductive metals. A computer then extracts the distortion component and removes it from the received signals providing the correct position and orientation output to a high degree of accuracy.
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