Magnetostrictive inertial actuators are profitably used in applications of vibration control. However their use is limited to high frequencies because of problems related to control stability and to small exertable forces. This paper presents the design of an innovative low-frequency magnetostrictive inertial actuator. With respect to traditional magnetostrictive actuators it is able to significantly multiply the amplitude of the elongation of the magnetostrictive bar and to extend its functioning well below the working frequencies of traditional devices. The design of the actuator has been optimized through both an analytical model and a finite element model taking into account all the design parameters. The optimized low-frequency magnetostrictive inertial actuator has then been produced and its frequency response compared to that of a traditional magnetostrictive actuator made up of the same components (except for the supporting structure).

A low frequency magnetostrictive inertial actuator for vibration control

BRAGHIN, FRANCESCO;CINQUEMANI, SIMONE;RESTA, FERRUCCIO
2012

Abstract

Magnetostrictive inertial actuators are profitably used in applications of vibration control. However their use is limited to high frequencies because of problems related to control stability and to small exertable forces. This paper presents the design of an innovative low-frequency magnetostrictive inertial actuator. With respect to traditional magnetostrictive actuators it is able to significantly multiply the amplitude of the elongation of the magnetostrictive bar and to extend its functioning well below the working frequencies of traditional devices. The design of the actuator has been optimized through both an analytical model and a finite element model taking into account all the design parameters. The optimized low-frequency magnetostrictive inertial actuator has then been produced and its frequency response compared to that of a traditional magnetostrictive actuator made up of the same components (except for the supporting structure).
File in questo prodotto:
File Dimensione Formato  
1-s2.0-S0924424712001793-main.pdf

Accesso riservato

: Post-Print (DRAFT o Author’s Accepted Manuscript-AAM)
Dimensione 1.46 MB
Formato Adobe PDF
1.46 MB Adobe PDF   Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/694025
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 61
  • ???jsp.display-item.citation.isi??? 44
social impact