Design and fabrication of a highly symmetrical capacitive triaxial accelerometer
| Autor: | Dacheng Zhang, Yilong Hao, Guoying Wu, Gang Li, Congshun Wang, Zhihong Li, Ting Li |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Engineering
Fabrication business.industry Mechanical Engineering Acoustics Capacitive sensing Sense (electronics) Accelerometer Finite element method Electronic Optical and Magnetic Materials Acceleration Modal Mechanics of Materials Electronic engineering Sensitivity (control systems) Electrical and Electronic Engineering business |
| Zdroj: | Journal of Micromechanics and Microengineering. 11:48-54 |
| ISSN: | 1361-6439 0960-1317 |
| DOI: | 10.1088/0960-1317/11/1/308 |
| Popis: | A monolithic capacitive triaxial accelerometer using a highly symmetric quad-beam structure with a single seismic mass is developed. The structure of the accelerometer is analysed in detail theoretically and numerically. Static and modal simulations with a finite element method simulator are done to analyse the mechanical response at accelerations of different directions. The simulated results show that the accelerometer can sense triaxial acceleration separately and synchronously. It has sensitivities of about 7.66, 6.08 and 6.08 fF g-1 in the z-axis, x-axis and y-axis, respectively, and has nearly zero cross-axis sensitivity theoretically. Moreover, some design optimizations are made to improve its performance. Finally, the fabrication and the basic performance of the device are presented. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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