Design of a quasi-zero-stiffness based sensor system for the measurement of absolute vibration displacement of moving platforms

Xingjian Jing, Yu Wang, Quankun Li, Xiuting Sun

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)

Abstract

� 2016 IOP Publishing Ltd. This study presents the analysis and design of a novel sensor system for measuring the absolute vibration displacement of moving platforms based on the concept of quasi-zero-stiffness (QZS). The sensor system is constructed using positive- and negative-stiffness springs, which make it possible to achieve an equivalent QZS and consequently to create a broadband vibration-free point for absolute vibration displacement measurement in moving platforms. Theoretical analysis is conducted for the analysis and design of the influence of structure parameters on system measurement performance. A prototype is designed which can avoid the drawback of instability in existing QZS systems with negative stiffness, and corresponding data-processing software is developed to fulfill time domain measurements. Both the simulation and experimental results verify the effectiveness of this novel sensor system.
Original languageEnglish
Article number097002
JournalSmart Materials and Structures
Volume25
Issue number9
DOIs
Publication statusPublished - 8 Aug 2016

Keywords

  • displacement sensor systems
  • nonlinear stiffness
  • vibration measurement

ASJC Scopus subject areas

  • Signal Processing
  • Civil and Structural Engineering
  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering

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