Basic consideration of a flat-type acceleration sensor utilizing the resonance frequency shift in the flexural vibrator

被引:0
|
作者
Takahashi, Jun [1 ]
Sugawara, Sumio [1 ]
Terada, Jiro [2 ]
机构
[1] Faculty of Science and Engineering, Ishinomaki Senshu University, 1 Shinmito, Mimamisakai, Ishinomaki-shi 986-8580, Japan
[2] Material and Process Laboratory, Matsushita Elec. Components Co., Ltd, 1006 Kadoma, Kadoma-shi 571-0050, Japan
关键词
Acceleration - Finite element method - Natural frequencies - Vibrations (mechanical) - Vibrators;
D O I
10.1143/jjap.42.3124
中图分类号
学科分类号
摘要
In this paper, a flat-type structure for the acceleration sensor utilizing the resonance frequency shift in the flexural vibrator is proposed, and the design guideline considering the influence of support is clarified by the finite-element analysis. The resonance frequency shift in the vibrator is produced by axial force due to acceleration. The resonance frequency and quality factor are negligibly influenced by adding support and also by adding mass, because the displacements at both ends of the vibrator are very small. The relationship between the acceleration and the resonance frequency change becomes linear. The influence of the undesirable acceleration from other axes is also analyzed. It was clarified that high sensitivity and reduction of the undesirable acceleration are realized by adding mass and by devising a support. This new structure is expected to be a small low-cost crystal sensor that can be fabricated by mass production.
引用
收藏
页码:3124 / 3129
相关论文
共 9 条