Hysteresis Modeling in Magnetostrictive Materials via Preisach Operators,

Abstract

A phenomenological characterization of hysteresis in magnetostrictive materials is presented. Such hysteresis is due to both the driving magnetic fields and stress relations within the material and is significant throughout most of the drive range of magnetostrictive transducers. An accurate characterization of the hysteresis and material nonlinearities is necessary to fully utilize the actuator/sensor capabilities of the magnetostrictive materials. Such a characterization is made here in the context of generalized Preisach operators. This yields a framework amenable to proving the well-posedness of structural models that incorporate the magnetostrictive transducers. It also provides a natural setting in which to develop practical approximation techniques. An example illustrating this framework in the context of a Timoshenko beam model is presented.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1997
Accession Number
ADA328251

Entities

People

  • R. C. Smith

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Actuators
  • Domain Walls
  • Experimental Data
  • Magnetic Domains
  • Magnetic Fields
  • Magnetic Induction
  • Magnetic Materials
  • Magnetic Properties
  • Materials
  • Modulus Of Elasticity
  • Nonlinear Dynamics
  • Permanent Magnets
  • Physical Properties
  • Physical Theories
  • Physics
  • Stresses
  • Transducers

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Materials Science and Engineering.