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Influence of Electrostatic Forces on the Vibrational Characteristics of Resonators for Coriolis Vibratory Gyroscopes
The Coriolis Vibratory Gyroscopes are a type of sensors that measure angular velocities through the Coriolis effect. The resonator is the critical component of the CVGs, the vibrational characteristics of which, including the resonant frequency, frequency mismatch, Q factor, and Q factor asymmetry,...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6982723/ https://www.ncbi.nlm.nih.gov/pubmed/31948044 http://dx.doi.org/10.3390/s20010295 |
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author | Xiao, Pengbo Qiu, Zhinan Pan, Yao Li, Shaoliang Qu, Tianliang Tan, Zhongqi Liu, Jianping Yang, Kaiyong Zhao, Wanliang Luo, Hui Qin, Shiqiao |
author_facet | Xiao, Pengbo Qiu, Zhinan Pan, Yao Li, Shaoliang Qu, Tianliang Tan, Zhongqi Liu, Jianping Yang, Kaiyong Zhao, Wanliang Luo, Hui Qin, Shiqiao |
author_sort | Xiao, Pengbo |
collection | PubMed |
description | The Coriolis Vibratory Gyroscopes are a type of sensors that measure angular velocities through the Coriolis effect. The resonator is the critical component of the CVGs, the vibrational characteristics of which, including the resonant frequency, frequency mismatch, Q factor, and Q factor asymmetry, have a great influence on the performance of CVG. The frequency mismatch and Q factor of the resonator, in particular, directly determine the precision and drift characteristics of the gyroscope. Although the frequency mismatch and Q factor are natural properties of the resonator, they can change with external conditions, such as temperature, pressure, and external forces. In this paper, the influence of electrostatic forces on the vibrational characteristics of the fused silica cylindrical resonator is investigated. Experiments were performed on a fused silica cylindrical resonator coated with Cr/Au films. It was shown that the resonant frequency, frequency mismatch, and the decay time slightly decreased with electrostatic forces, while the decay time split increased. Lower capacitive gaps and larger applied voltages resulted in lower frequency mismatch and lower decay time. This phenomenon was theoretically analyzed, and the variation trends of results were consistent with the theoretical analysis. This study indicates that, for fused silica cylindrical resonator with electrostatic transduction, the electrostatic influence on the Q factor and frequency, although small, should be considered when designing the capacitive gap and choosing bias voltages. |
format | Online Article Text |
id | pubmed-6982723 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-69827232020-02-28 Influence of Electrostatic Forces on the Vibrational Characteristics of Resonators for Coriolis Vibratory Gyroscopes Xiao, Pengbo Qiu, Zhinan Pan, Yao Li, Shaoliang Qu, Tianliang Tan, Zhongqi Liu, Jianping Yang, Kaiyong Zhao, Wanliang Luo, Hui Qin, Shiqiao Sensors (Basel) Article The Coriolis Vibratory Gyroscopes are a type of sensors that measure angular velocities through the Coriolis effect. The resonator is the critical component of the CVGs, the vibrational characteristics of which, including the resonant frequency, frequency mismatch, Q factor, and Q factor asymmetry, have a great influence on the performance of CVG. The frequency mismatch and Q factor of the resonator, in particular, directly determine the precision and drift characteristics of the gyroscope. Although the frequency mismatch and Q factor are natural properties of the resonator, they can change with external conditions, such as temperature, pressure, and external forces. In this paper, the influence of electrostatic forces on the vibrational characteristics of the fused silica cylindrical resonator is investigated. Experiments were performed on a fused silica cylindrical resonator coated with Cr/Au films. It was shown that the resonant frequency, frequency mismatch, and the decay time slightly decreased with electrostatic forces, while the decay time split increased. Lower capacitive gaps and larger applied voltages resulted in lower frequency mismatch and lower decay time. This phenomenon was theoretically analyzed, and the variation trends of results were consistent with the theoretical analysis. This study indicates that, for fused silica cylindrical resonator with electrostatic transduction, the electrostatic influence on the Q factor and frequency, although small, should be considered when designing the capacitive gap and choosing bias voltages. MDPI 2020-01-05 /pmc/articles/PMC6982723/ /pubmed/31948044 http://dx.doi.org/10.3390/s20010295 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Xiao, Pengbo Qiu, Zhinan Pan, Yao Li, Shaoliang Qu, Tianliang Tan, Zhongqi Liu, Jianping Yang, Kaiyong Zhao, Wanliang Luo, Hui Qin, Shiqiao Influence of Electrostatic Forces on the Vibrational Characteristics of Resonators for Coriolis Vibratory Gyroscopes |
title | Influence of Electrostatic Forces on the Vibrational Characteristics of Resonators for Coriolis Vibratory Gyroscopes |
title_full | Influence of Electrostatic Forces on the Vibrational Characteristics of Resonators for Coriolis Vibratory Gyroscopes |
title_fullStr | Influence of Electrostatic Forces on the Vibrational Characteristics of Resonators for Coriolis Vibratory Gyroscopes |
title_full_unstemmed | Influence of Electrostatic Forces on the Vibrational Characteristics of Resonators for Coriolis Vibratory Gyroscopes |
title_short | Influence of Electrostatic Forces on the Vibrational Characteristics of Resonators for Coriolis Vibratory Gyroscopes |
title_sort | influence of electrostatic forces on the vibrational characteristics of resonators for coriolis vibratory gyroscopes |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6982723/ https://www.ncbi.nlm.nih.gov/pubmed/31948044 http://dx.doi.org/10.3390/s20010295 |
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