A novel resonant accelerometer based on mode localization of weakly coupled resonators

H. M. Zhang, W. Z. Yuan, B. Y. Li, Y. C. Hao, M. Kraft, H. L. Chang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

31 Scopus citations

Abstract

This paper describes a novel MEMS resonant accelerometer based on two weakly coupled resonators (WCRs) using the phenomenon of mode localization. To the best of the authors' knowledge, it is the first time that this principle is experimentally demonstrated for an accelerometer. When acceleration acts on the two proof masses, there will be a differential electrostatic stiffness perturbation introduced on the WCRs, which leads to mode localization and mode shape change. Therefore, the acceleration can be sensed by measuring the amplitude ratio shift. The measured relative shift in amplitude ratio (∼312162 ppm/g) is 302 times higher than the shift in resonance frequency (∼1035 ppm/g).

Original languageEnglish
Title of host publication2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1073-1076
Number of pages4
ISBN (Electronic)9781479989553
DOIs
StatePublished - 5 Aug 2015
Event18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015 - Anchorage, United States
Duration: 21 Jun 201525 Jun 2015

Publication series

Name2015 Transducers - 2015 18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015

Conference

Conference18th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS 2015
Country/TerritoryUnited States
CityAnchorage
Period21/06/1525/06/15

Keywords

  • high sensitivity
  • mode localization
  • Resonant accelerometer
  • weakly coupled resonators

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