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A novel semi-active quasi-zero stiffness vibration isolation system using a constant-force magnetic spring and an electromagnetic linear motor
KTH.
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2014 (English)In: INTERNOISE 2014 - 43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, 2014Conference paper, Published paper (Refereed)
Abstract [en]

The performance of conventional vibration isolation systems are limited by the stiffness of the mount required to support the weight of the payload. A potential method for addressing this limitation is to use the phenomenon of quasi-zero stiffness (QZS), which results in a high static stiffness to support the weight of payload and a low dynamic stiffness to achieve a wider vibration isolation range. Recently, QZS systems with various negative stiffness elements and mechanical configurations have been proposed and studied. This paper presents the design and analysis of a novel semi-active QZS vibration isolation system using a commercial constant-force magnetic spring and an electromagnetic linear motor. The proposed system combines the advantages of both passive QZS systems and active damping control, and therefore is cost-effective, energy-efficient, and has the potential of a large bandwidth of vibration isolation as well as a low resonance peak. The use of acommercial magnetic spring not only allows the system to support a large static pay load over a wide range of travel but also simplifies the design. In this paper, the design, identification and control aspects of the proposed vibration isolation system are discussed and the system performance is investigated theoretically and experimentally.

Place, publisher, year, edition, pages
2014.
Keyword [en]
Quasi-zero stiffness, Semi-active control, Vibration isolator, Acoustic variables control, Cost effectiveness, Design, Energy efficiency, Linear motors, Stiffness, Active damping controls, Design and analysis, Mechanical configurations, Semiactive control, Vibration isolation systems, Vibration isolations, Vibration isolators, Vibration analysis
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-167539Scopus ID: 2-s2.0-84923569383ISBN: 9780909882037 (print)OAI: oai:DiVA.org:kth-167539DiVA: diva2:819248
Conference
43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014, 16 November 2014 through 19 November 2014
Note

QC 20150610

Available from: 2015-06-10 Created: 2015-05-22 Last updated: 2016-12-05Bibliographically approved

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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf