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Letter

A 5.86 Million Quality Factor Cylindrical Resonator with Improved Structural Design Based on Thermoelastic Dissipation Analysis

College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China
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Author to whom correspondence should be addressed.
Sensors 2020, 20(21), 6003; https://doi.org/10.3390/s20216003
Received: 8 September 2020 / Revised: 20 October 2020 / Accepted: 20 October 2020 / Published: 22 October 2020
(This article belongs to the Special Issue Theory and Design of Vibration Sensing and Gyroscopic Systems)
The cylindrical resonator is the core component of cylindrical resonator gyroscopes (CRGs). The quality factor (Q factor) of the resonator is one crucial parameter that determines the performance of the gyroscope. In this paper, the finite element method is used to theoretically investigate the influence of the thermoelastic dissipation (TED) of the cylindrical resonator. The improved structure of a fused silica cylindrical resonator is then demonstrated. Compared with the traditional structure, the thermoelastic Q (QTED) of the resonator is increased by 122%. In addition, the Q factor of the improved cylindrical resonator is measured, and results illustrate that, after annealing and chemical etching, the Q factor of the resonator is significantly higher than that of the cylindrical resonators reported previously. The Q factor of the cylindrical resonator in this paper reaches 5.86 million, which is the highest value for a cylindrical resonator to date. View Full-Text
Keywords: cylindrical resonator; quality factor; thermoelastic dissipation cylindrical resonator; quality factor; thermoelastic dissipation
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MDPI and ACS Style

Zeng, L.; Luo, Y.; Pan, Y.; Jia, Y.; Liu, J.; Tan, Z.; Yang, K.; Luo, H. A 5.86 Million Quality Factor Cylindrical Resonator with Improved Structural Design Based on Thermoelastic Dissipation Analysis. Sensors 2020, 20, 6003. https://doi.org/10.3390/s20216003

AMA Style

Zeng L, Luo Y, Pan Y, Jia Y, Liu J, Tan Z, Yang K, Luo H. A 5.86 Million Quality Factor Cylindrical Resonator with Improved Structural Design Based on Thermoelastic Dissipation Analysis. Sensors. 2020; 20(21):6003. https://doi.org/10.3390/s20216003

Chicago/Turabian Style

Zeng, Libin, Yiming Luo, Yao Pan, Yonglei Jia, Jianping Liu, Zhongqi Tan, Kaiyong Yang, and Hui Luo. 2020. "A 5.86 Million Quality Factor Cylindrical Resonator with Improved Structural Design Based on Thermoelastic Dissipation Analysis" Sensors 20, no. 21: 6003. https://doi.org/10.3390/s20216003

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