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Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
I'm needing to calculate the distance between the active area (X,Y) of a mems sensor and its magnet, (Z) this will be a fixed permanent length once I glue it near 50 mT.
the distance id like to calculate is that which yields 50 mT. I can run a test where i see saturation (greater than 70mT) and another where the field is less than 30 mT. but what is the non-linear math once I find that distance? im not sure about rearranging terms from the magnetic formulas i know.
Registered Member #57532
Joined: Sun Oct 18 2015, 03:19PM
Location: Slovenia
Posts: 4
I suggest you to do a numerical approach. Learn to use FEMM *Link* It is a free numerical software for planar and axisymmetric problems in magnetics ( or electristatics, heat flow, current flow ). Quite useful and simple to use. Calculate numerically in software for different distances and extrapolate. Do test for 30 and 70 mT and scale/correct numerical data according to tests.
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MEMS rotational sensor magnetic intensity.
