A second-order Preisach model of scalar hysteresis is proposed and investig
ated. Parameter functions of this model are identified using transition cur
ves of up to the third order. Wiping-out properly and the property of invar
iance in the change of minor loop shape due to elimination of the first inp
ut extremum are shown to be the necessary and sufficient conditions for the
representation of a given scalar hysteresis relation by the proposed model
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