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# Magnetic measuremnt experiment

- To: femm@yahoogroups.com
- Subject: Magnetic measuremnt experiment
- From: "barryn56 <barry@collabrion.com>" <barry@collabrion.com>
- Date: Tue, 04 Mar 2003 09:01:42 -0000
- User-agent: eGroups-EW/0.82

    Sorry if this is slightly off-topic, but I used Femm to calculate
    the effect on a tri-axial magnetometer of a magnet outside a steel
    tube. The idea was to see if you could determine the angular
    position of the magnet. I have just received the data from a test
    and it seems to work, though there is end distortion of the signals
    as the magnetometer moves into and out of the field. Is there anyone
    who could provide a simple algorithm to use the z vector to reduce
    the end effect? If I just use x and y, it is quite noisy except when
    directly in line with the magnet. I have put a small section of
    the data to ilustrate (magnet.txt) in the files section for anyone
    interested.

    Thanks,

    Barry

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