Langatate and langasite microacoustic gyro sensors

Gobong Choi, Yook Kong Yong

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Langasite and langatate materials are gaining in popularity for use in piezoelectric sensors because of their material properties. Both materials have similar crystal properties as the quartz crystal which is widely used in BAW applications such as resonators and a piezoelectric vibratory gyroscopes. Quartz, langasite, and langatate are trigonal class crystals belonging to the same point group 32. In this paper, we simulate and compare the gyro-characteristics of a piezoelectric doubled-ended tuning fork gyroscope using Comsol 4.2a software. Eigenfrequency analyses are performed to determine an optimal geometry of the gyroscope. Frequency response analyses are used to simulate the sensitivity of the gyroscope to angular velocity about the z-axis. The sensitivity of the quartz, langasite and langatate gyroscope are found to be 0.191 mV/(deg./s), 0.469 mV/(deg./s) and 0.784 mV/(deg./s), respectively. The results show that langasite and langatate crystal are more effective than quartz crystal for high precision piezoelectric gyroscopes.

Original languageEnglish (US)
Title of host publicationIEEE International Ultrasonics Symposium, IUS
PublisherIEEE Computer Society
Pages1480-1483
Number of pages4
ISBN (Electronic)9781479970490
DOIs
StatePublished - Oct 20 2014
Event2014 IEEE International Ultrasonics Symposium, IUS 2014 - Chicago, United States
Duration: Sep 3 2014Sep 6 2014

Publication series

NameIEEE International Ultrasonics Symposium, IUS
ISSN (Print)1948-5719
ISSN (Electronic)1948-5727

Other

Other2014 IEEE International Ultrasonics Symposium, IUS 2014
Country/TerritoryUnited States
CityChicago
Period9/3/149/6/14

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

Keywords

  • Gyro sensitivity
  • Langasite gyroscope
  • Langatate gyroscope
  • Piezoelctric microacoustic gyroscope
  • Piezoelectric vibratory gyroscope

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