An actuator with tuneable resonant frequency for active vibration damping
An actuator with tuneable resonant frequency for active vibration damping
This paper explores implementing active resonance frequency tuning of adaptive tuned vibration absorbers (ATVA) by coupling a vibration absorber comprising a voice coil actuator (VCA) and a sprung inertial mass to a solenoid actuator (SA). In this device, the DC current flowing through the SA generates negative magnetic stiffness and varies the equilibrium position of the nonlinear spring of the VCA, thus changing the effective stiffness of the system and its resonant frequency. The paper details the analytical design steps and the parametric sizing process of designing the SA to maximize its force density within defined magnetic, dimensions and thermal constraints. The design of the SA was verified using finite element analysis (FEA), manufactured and coupled to a VCA to make the complete ATVA system. The experimental results demonstrate the tunability of the resonance frequency of the ATVA by controlling the SA’s DC current. It is shown that the system’s resonance frequency can be shifted by up to 23% of the fundamental resonance frequency, which improves the effectiveness of the ATVA at damping a broader range of excitation frequencies.
Vibration control, adaptive tuning, electromagnetic stiffness, low profile solenoid, voice coil actuator
Hendijanizadeh, Mehdi
9631d6d8-f4fb-4088-8d66-950699eba189
Sharkh, Suleiman
c8445516-dafe-41c2-b7e8-c21e295e56b9
Mosca, Pietro
9c3447bf-0dbf-4702-86ea-5e4b32c94d43
Daley, Stephen
53cef7f1-77fa-4a4c-9745-b6a0ba4f42e6
28 November 2022
Hendijanizadeh, Mehdi
9631d6d8-f4fb-4088-8d66-950699eba189
Sharkh, Suleiman
c8445516-dafe-41c2-b7e8-c21e295e56b9
Mosca, Pietro
9c3447bf-0dbf-4702-86ea-5e4b32c94d43
Daley, Stephen
53cef7f1-77fa-4a4c-9745-b6a0ba4f42e6
Hendijanizadeh, Mehdi, Sharkh, Suleiman, Mosca, Pietro and Daley, Stephen
(2022)
An actuator with tuneable resonant frequency for active vibration damping.
Journal of Intelligent Materials Systems and Structures.
(doi:10.1177/1045389X221132553).
Abstract
This paper explores implementing active resonance frequency tuning of adaptive tuned vibration absorbers (ATVA) by coupling a vibration absorber comprising a voice coil actuator (VCA) and a sprung inertial mass to a solenoid actuator (SA). In this device, the DC current flowing through the SA generates negative magnetic stiffness and varies the equilibrium position of the nonlinear spring of the VCA, thus changing the effective stiffness of the system and its resonant frequency. The paper details the analytical design steps and the parametric sizing process of designing the SA to maximize its force density within defined magnetic, dimensions and thermal constraints. The design of the SA was verified using finite element analysis (FEA), manufactured and coupled to a VCA to make the complete ATVA system. The experimental results demonstrate the tunability of the resonance frequency of the ATVA by controlling the SA’s DC current. It is shown that the system’s resonance frequency can be shifted by up to 23% of the fundamental resonance frequency, which improves the effectiveness of the ATVA at damping a broader range of excitation frequencies.
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1045389x221132553
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More information
e-pub ahead of print date: 28 November 2022
Published date: 28 November 2022
Additional Information:
Funding Information:
The authors disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was supported by the Intelligent Structures for Low Noise Environments (ISLNE) EPSRC Prosperity Partnership (EP/S03661X/1).
Publisher Copyright:
© The Author(s) 2022.
Keywords:
Vibration control, adaptive tuning, electromagnetic stiffness, low profile solenoid, voice coil actuator
Identifiers
Local EPrints ID: 472912
URI: http://eprints.soton.ac.uk/id/eprint/472912
ISSN: 1045-389X
PURE UUID: 295af819-3021-4012-a6b0-7b12514169f1
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Date deposited: 05 Jan 2023 18:14
Last modified: 17 Mar 2024 02:41
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Author:
Pietro Mosca
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