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A SENSORLESS METHOD FOR THE IDENTIFICATION OF ASYMMETRIC HYSTERESIS LOOPS OF FERROMAGNETIC MATERIALS

Loredana Cristaldi, Alessandro Ferrero, Massimo Lazzaroni, Adriano P. Morando
  • Abstract:
    The sensorless determination of the dynamic hysteresis loop of the 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 determination of the dynamic hysteresis loop under ac asymmetric conditions, in the presence of a dc flux polarization. The method is based on the determination of the parameters of a simplified linear circuital model of the magnetic circuit, which shows an energy equivalence. The results of some experimental work are provided in order to validate the proposed method.
  • Keywords:
    magnetic measurements, sensorless measurement systems, Virtual Instruments, Digital Signal Processing
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  • DOI:
    _unreg_tc4-2001.042

Event details:

  • IMEKO TC:
    TC4
  • Event name:
    TC4 Symposium 2001
  • Title:

    11th IMEKO TC4 Symposium on Trends in Electrical Measurements and Instrumentation (together with 6th IMEKO TC4 Workshop on ADC Modelling and Testing)

  • Place:
    Lisbon, PORTUGAL
  • Time:
    13 September 2001 - 14 September 2001