Mode-Matching of Wineglass Mode Disk Resonator Gyroscope in (100) Single Crystal Silicon

被引:109
作者
Ahn, Chae Hyuck [1 ]
Ng, Eldwin J. [1 ]
Hong, Vu A. [1 ]
Yang, Yushi [1 ]
Lee, Brian J. [1 ]
Flader, Ian [1 ]
Kenny, Thomas W. [1 ]
机构
[1] Stanford Univ, Dept Mech Engn, Stanford, CA 94305 USA
基金
美国国家科学基金会;
关键词
Microelectromechanical systems (MEMS) gyroscope; mode-matching; frequency split; (100) single crystal silicon; wineglass mode; STABILITY; VIBRATION; ALIGNMENT;
D O I
10.1109/JMEMS.2014.2330590
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper, we present four design methods to overcome (100) silicon crystalline anisotropy and achieve mode-matching in wineglass-mode disk resonator gyroscope (DRG). These methods were validated through experimental characterization of more than 145 different devices that arose from simulations. With the proposed methods, the frequency split of the 250-kHz DRG wineglass modes in (100) silicon was reduced from >10 kHz to as low as 96 Hz (<0.04% of 250-kHz resonant frequency) without any electrostatic tuning. Perfect mode-matching is then achieved using electrostatic tuning. Mode-matching was maintained within +/- 10 Hz over a temperature range from -20 degrees C to 80 degrees C. The temperature dependence of quality factor is also discussed in this paper. These results allow for the development of high-performance miniature DRGs tuned for degenerate wineglass mode operation from high-quality crystalline silicon material.
引用
收藏
页码:343 / 350
页数:8
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