(eng): Identification of a Preisach-type operator using a suitable fixed ridge functions is shown to be a well-posed problem and its discretization is proved to converge and is implemented by an adaptive manner. Further, it is exploited to try to detect some material properties of ferromagnets from their hysteretic response when choosing the anhysteretic response for the ridge function. This is shown to allow, to a certain extent, to read a distribution of the coercive force of the magnets from their response and, vice versa, to set up their response from such distribution together with their shape that determines the anhysteretic response. For computational experiments, a previously developed ``mesoscopical'' model of uniaxial ferromagnets is used.

(cze): V článku identifikujeme Preisachův operátor odpovídající odezvě ferromagnet na vnější magnetické pole. Tato odezva je definována jak tzv. energetické řešení modelů s rychlostně-nezávislou disipací.