A New Active Anti-Vibration System Using a Magnetostrictive Bimetal Actuator

Ghodsi, Mojtaba and Morteza, Mohammadzaheri and Payam, Soltani and Hamidreza, Ziaiefar (2022) A New Active Anti-Vibration System Using a Magnetostrictive Bimetal Actuator. Journal of Magnetism and Magnetic Materials, 557. ISSN 0304-8853

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This paper introduces a new vibration reduction system using a magnetostrictive (Fe-Ga alloy) bimetal actuator. The proposed method (i) uses a magnetostrictive bimetal actuator instead of prevalent single material ones that need an auxiliary temperature control system and (ii) utilises a novel disturbance rejection control scheme that eliminates an unknown disturbance, without needing knowledge of its dynamics. In experiments, the vibration source is demonstrated as an unbalanced motor attached to the tip of a cantilever beam, resembling a beam-like element subject to ambiance vibrations. In the first step, the fundamental of this anti-vibration system is introduced and described. Then, analytical and data-driven modelling for the combination of the beam, the motor, and the bimetal is reported. These follow by model validation and impulse response analysis. Then, the proposed control system is introduced in detail. Experimental results indicate that the control system results in 33.6% decrease in beam vibration amplitude. Furthermore, the presented method in this paper can be employed as a design guideline for future applications.

Item Type: Article
Identification Number: https://doi.org/10.1016/j.jmmm.2022.169463
8 May 2022Accepted
16 May 2022Published Online
Uncontrolled Keywords: Active control; Magnetostrictive bimetal; Galfenol (Fe-Ga); Feedforward control; System identification
Subjects: CAH10 - engineering and technology > CAH10-01 - engineering > CAH10-01-02 - mechanical engineering
CAH10 - engineering and technology > CAH10-01 - engineering > CAH10-01-08 - electrical and electronic engineering
Divisions: Faculty of Computing, Engineering and the Built Environment > College of Engineering
Depositing User: Morteza Mohammadzaheri
Date Deposited: 20 May 2022 12:02
Last Modified: 20 Jun 2024 11:50
URI: https://www.open-access.bcu.ac.uk/id/eprint/13241

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