Next Article in Journal
Sensor Reliability Evaluation Scheme for Target Classification Using Belief Function Theory
Previous Article in Journal
Design of a Wireless Sensor Network Platform for Tele-Homecare
Sensors 2013, 13(12), 17176-17192; doi:10.3390/s131217176

Structural-Acoustic Coupling Effects on the Non-Vacuum Packaging Vibratory Cylinder Gyroscope

1 College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, China 2 Beijing Special Vehicle Institute, Beijing 100073, China 3 State key Laboratory of High performance Complex Manufacturing, Central South University, Changsha 410083, China
* Author to whom correspondence should be addressed.
Received: 6 November 2013 / Revised: 21 November 2013 / Accepted: 22 November 2013 / Published: 13 December 2013
(This article belongs to the Section Physical Sensors)
View Full-Text   |   Download PDF [391 KB, uploaded 21 June 2014]   |  


The resonant shells of vibratory cylinder gyroscopes are commonly packaged in metallic caps. In order to lower the production cost, a portion of vibratory cylinder gyroscopes do not employ vacuum packaging. However, under non-vacuum packaging conditions there can be internal acoustic noise leading to considerable acoustic pressure which is exerted on the resonant shell. Based on the theory of the structural-acoustic coupling, the dynamical behavior of the resonant shell under acoustic pressure is presented in this paper. A finite element (FE) model is introduced to quantitatively analyze the effect of the structural-acoustic coupling. Several main factors, such as sealing cap sizes and degree of vacuum which directly affect the vibration of the resonant shell, are studied. The results indicate that the vibration amplitude and the operating frequency of the resonant shell will be changed when the effect of structural-acoustic coupling is taken into account. In addition, an experiment was set up to study the effect of structural-acoustic coupling on the sensitivity of the gyroscope. A 32.4 mV/°/s increase of the scale factor and a 6.2 Hz variation of the operating frequency were observed when the radial gap size between the resonant shell and the sealing cap was changed from 0.5 mm to 20 mm.
Keywords: vibratory cylinder gyroscope; structural-acoustic coupling; resonant shell vibratory cylinder gyroscope; structural-acoustic coupling; resonant shell
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
EndNote |
MDPI and ACS Style

Xi, X.; Wu, X.; Wu, Y.; Zhang, Y.; Tao, Y.; Zheng, Y.; Xiao, D. Structural-Acoustic Coupling Effects on the Non-Vacuum Packaging Vibratory Cylinder Gyroscope. Sensors 2013, 13, 17176-17192.

View more citation formats

Related Articles

Article Metrics

For more information on the journal, click here


[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert