Hi guys:
I'm dealing with an approximation problem.
The data of the B-H curve of a core material (steel M4) is given:
https://www.dropbox.com/s/r8da63kxg6n9ou4/BH.mat?dl=0
Which then can be plotted using Matlab (blue curve):
I've tried to approximate it with this function (red):
B(H)_{app} = 1.62*(1-exp(-H/11.4))
But the result is not good enough for the calculation.
The area which is really important to me is the one marked green. I need the approximation in this area to be as good as possible. The slope of the curve is also very important, since dB/dH := the permeability of the material.
I'd really appreciate if some one can help me. Thanks a lot.
I'm dealing with an approximation problem.
The data of the B-H curve of a core material (steel M4) is given:
https://www.dropbox.com/s/r8da63kxg6n9ou4/BH.mat?dl=0
Which then can be plotted using Matlab (blue curve):
I've tried to approximate it with this function (red):
B(H)_{app} = 1.62*(1-exp(-H/11.4))
But the result is not good enough for the calculation.
The area which is really important to me is the one marked green. I need the approximation in this area to be as good as possible. The slope of the curve is also very important, since dB/dH := the permeability of the material.
I'd really appreciate if some one can help me. Thanks a lot.