Journal
JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS
Volume 196, Issue 1, Pages 45-57Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cam.2005.08.021
Keywords
monotonicity-preserving approximation; interproximation; smoothing splines; B-H-curves; Maxwell's equations; nonlinear field computations
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B-H-curves are used for modelling ferromagnetic materials in connection with electromagnetic field computations. They are needed for the numerical simulation of devices such as transformers or magnetic valves. Starting from real-life measurement data, we present an approximation technique which is based on the use of spline functions and a data-dependent smoothing functional. It preserves physical properties, such as monotonicity, and is robust with respect to noise in the measurements. (c) 2005 Elsevier B.V. All rights reserved.
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