摘要
运用振动隔离原理设计声-振动传感器系统中声音传感器的两种隔震封装模型:传统式隔震封装模型和双J形隔震封装模型.运用ANSYS有限元分析软件对模型进行模态分析,得出两种封装模型的固有频率与模型尺寸参数的关系曲线.分析结果表明,双J形隔震封装模型的固有频率明显低于传统的隔震封装模型的固有频率,双J形隔震封装模型尺寸参数为R=1.6mm,r=1.2mm,H=8mm时,其固有频率为:左右振动模式f21=30.900Hz,前后振动模式f22=105.99Hz,上下振动模式f23=130.84Hz.
The shock isolating principle has been used to design two packaging models of the acoustic sensor in the acoustic-vibration sensors system. The first model is the traditional type of the shock isolating packaging, and the second model is double J-like shock isolating packaging. The relationship curves between the frequencies of the two models and their scale parameters have been gained through modal analyses by use of the finite element analysis software Ansys. The results show that the natural frequencies of the double J-like model are less than those of the traditional model, when the scale parameters of the double J-like model are: R = 1.6 mm, r = 1.2 mm and H = 8 mm, and its three natural frequencies have been given, f1 = 30.90 Hz, f2 = 105.99 Hz, f3 = 130.84 Hz.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2005年第7期983-985,共3页
Journal of Harbin Institute of Technology
基金
黑龙江省普通高等学校骨干教师创新能力计划资助项目(1053G033).
关键词
封装
模态分析
震动隔离
声-振动传感器系统
Encapsulation
Finite element method
Microelectromechanical devices
Modal analysis
Natural frequencies
Sensors
Vibrations (mechanical)
