Improvements of Preisach model for soft magnetic materials, analysis of input excitation signal
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Date
2017
Journal Title
Journal ISSN
Volume Title
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Abstract
Determination of the weighting function of the Preisach hysteresis model depends
strongly on the quality of experimental data. The paper focuses on errors in the input
excitation current. The analysis of experimental data and their processing were identified the
main source of errors: RF noise, quantization noise at signal synthesis, power net
interference and short-term faults of used power supply. Their reduction is possible by
insertion of the filter in between the power source and measured sample. The filter was
designed with respect to main frequencies of both the useful and disturbing signal. Its
simulations are validated with measurements and the improvement of measured waveforms in
the time domain is demonstrated.
Description
Subject(s)
Preisach model, Quantization steps, Filter design, Symmetrical and non-symmetrical noise, Direct Digital Synthesizer (DDS)
Citation
ISSN
ISBN
978-80-9726291-4