Now showing items 1-7 of 7

    • Accommodation study via a sensorless measurement technique 

      Tellini, Bernardo; Giannetti, Romano; Lizón Martínez, Santiago; Marracci, Mirko (01/02/2008)
      We present the results of an experimental analysis aimed at further characterizing the accommodation phenomenon. The measurements are done on commercial ferrite cores by the use of a volt-amperometric measurement technique. ...
    • An improved DAQ-based method for ferrite characterization 

      Guarnieri Calo Carducci, Carlo; Marracci, Mirko; Attivissimo, Filippo; Giannetti, Romano; Tellini, Bernardo (01/09/2017)
      In this paper, we propose an improved version of the classical volt-amperometric measurement method for the characterization of magnetic hysteresis and losses in soft magnetic cores. Using an appropriate circuital solution ...
    • Characterization of the accommodation effect in soft hysteretic materials via sensorless measurement technique 

      Tellini, Bernardo; Giannetti, Romano; Lizón Martínez, Santiago; Marracci, Mirko (01/08/2009)
      The well-known voltamperometric method has only been used so far in the identification of symmetric hysteresis cycles for reasons that are explained in the main text. This paper extends the sensorless measurement method ...
    • Experimental analysis of magnetic accommodation properties via the use of complex trajectories 

      Marracci, Mirko; Tellini, Bernardo; Giannetti, Romano; Lizón Martínez, Santiago (IEEE (Austin, Estados Unidos de América), 03/05/2010)
      We present the results of an experimental analysis aimed at characterizing possible accommodation phenomena in soft magnetic materials. The amount of magnetization change and the magnetization stabilization process appear ...
    • Measuring the magnetic field attenuation of nonlinear shields 

      Bologna, M.; Giannetti, Romano; Marracci, Mirko; Tellini, Bernardo (Sin editorial (Sorrento, Italia), 24/04/2006)
      The problem of a low-frequency shielding of a loop placed inside a coaxial torus shield is analyzed by the application of the Schelkunoff transmission theory of shielding. Copper and iron torus shields are considered. In ...
    • On the use of the dual resonance non linear filter for speech processing in a hearing aid algorithm 

      Marracci, Mirko; Tellini, Bernardo; Giannetti, Romano; Lizón Martínez, Santiago (Politecnico di Bari (Bari, Italia), 30/05/2011)
      The Dual Resonance Non Linear (DRNL) filter bank is a powerful model of the human cochlear behavior successfully applied to cochlear implants. This study is aimed to the implementation of an algorithm for using this model ...
    • VI-Characterization of Soft Magnetic Materials by driving Current or Voltage 

      Giannetti, Romano; Marracci, Mirko; Tellini, Bernardo; Zappacosta, C. (Sin editorial (Florencia, Italia), 22/09/2008)
      We analyse the volt-amperometric (VI-) method for the characterization of minor loops of soft magnetic materials. By adopting several input signals and by operating at various frequencies in the 10 Hz 10 kHz frequency ...