The sensorless determination of the dynamic hysteresis loop of magnetic materials, and in particular those of magnetic plates, can be obtained under ac symmetric conditions in a relatively simple way. This paper proposes a new digital method and instrument for the sensorless evaluation of the dynamic hysteresis loop under ac asymmetric conditions, in the presence of a dc polarization of the magnetic flux. The method is based on the determination of the parameters of a simplified linear model of the magnetic circuit, which preserve the energy equivalence. The results of some experimental work are given in order to validate the proposed method.

Sensorless evaluation of asymmetric hysteresis loops of ferromagnetic materials / L. Cristaldi, A. Ferrero, M. Lazzaroni, A. Morando. - In: IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT. - ISSN 0018-9456. - 52:3(2003 Jun), pp. 846-851.

Sensorless evaluation of asymmetric hysteresis loops of ferromagnetic materials

M. Lazzaroni
Penultimo
;
2003

Abstract

The sensorless determination of the dynamic hysteresis loop of magnetic materials, and in particular those of magnetic plates, can be obtained under ac symmetric conditions in a relatively simple way. This paper proposes a new digital method and instrument for the sensorless evaluation of the dynamic hysteresis loop under ac asymmetric conditions, in the presence of a dc polarization of the magnetic flux. The method is based on the determination of the parameters of a simplified linear model of the magnetic circuit, which preserve the energy equivalence. The results of some experimental work are given in order to validate the proposed method.
Digital signal processing; Magnetic measurements; Sensorless measurement systems; Virtual Instruments
Settore ING-INF/07 - Misure Elettriche e Elettroniche
giu-2003
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/210789
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