Asymptotic behavior of a low-dimensional model for magnetostriction for periodic input

✍ Scribed by D.B. Ekanayake; R.V. Iyer

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 163 KB
• Volume: 403
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2007.08.023

✦ Synopsis

Models for magnetostrictive actuators need to include rate-independent hysteresis phenomena, magneto-elastic coupling, and eddy current losses that vary nonlinearly with the frequency of the input. In this paper, we study a low-dimensional model for magnetostrictive rod actuators that describes the physical phenomena which are most prominent in the frequency range 0-800 Hz. We show that the solution of the system is asymptotically periodic for bounded, continuous and periodic voltage inputs and with general conditions on a Preisach operator modeling rate-independent hysteresis. The results of this paper are crucial for developing a parameter identification methodology for the model that is addressed in [D.B. Ekanayake, R.V. Iyer, W.P. Dayawansa, Wide band modeling and parameter