jens
b11b8148ae
git-svn-id: http://moon:8086/svn/projects/HendiControl@26 fda53097-d464-4ada-af97-ba876c37ca34
45 lines
1.2 KiB
Objective-C
45 lines
1.2 KiB
Objective-C
## Copyright (C) 2018 Jens Ahrensfeld
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##
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## This program is free software; you can redistribute it and/or modify it
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## under the terms of the GNU General Public License as published by
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## the Free Software Foundation; either version 3 of the License, or
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## (at your option) any later version.
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##
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## This program is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU General Public License for more details.
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##
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## You should have received a copy of the GNU General Public License
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## along with this program. If not, see <http://www.gnu.org/licenses/>.
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## -*- texinfo -*-
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## @deftypefn {Function File} {@var{retval} =} vanDusen_eval (@var{input1}, @var{input2})
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##
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## @seealso{}
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## @end deftypefn
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## Author: Jens Ahrensfeld <ahrensfeld@w2ess001vm>
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## Created: 2018-05-28
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function [R, T] = vanDusen (R0, Tmin, Tmax, dT)
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a = +3.90830e-03;
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b = -5.77500e-07;
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c = -4.18301e-12;
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T = Tmin:dT:Tmax;
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Rp0 = R0*(1 + a*T + b*T.^2);
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Rm0 = Rp0 + R0*c*(T - 100).*T.^3;
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for i=1:length(T)
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if (T(i) < 0)
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R(i) = Rm0(i);
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else
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R(i) = Rp0(i);
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endif
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end
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endfunction
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