光学精密工程2016，Vol.24Issue(11)：2730-2737,8.DOI:10.3788/OPE.20162411.2730
齿形结构的长脉冲敏感型微加速度开关
Micro acceleration switch with tooth-shaped structure for long pulse sensitivity
摘要
Abstract
A micro acceleration switch for long pulse sensitivity was proposed to meet the requirement of a power management system of intelligent weapons for switch latching /unlatching .The switch was designed by using a suspended mass with tooth-shaped structure and a tooth shape guide and the energy dissipation was realized by the mutual collision of the mass and tooth shape guide during the moving process .The switch could implement the unlatch under the high amplitude and narrow pulse width acceleration and the latch under the low amplitude and long pulse width acceleration reliably . The structure and working principle of the switch were introduced .Then ,the theoretical analysis and finite element analysis(FEA ) of the switch were carried out and its model was simplified .A prototype switch was prepared by UV-LIGA technology , and the functional properties of the switch were verified by the combination of FEA and prototype test . The FEA shows that the switch latches reliably under 3 000 g/3 ms half sine acceleration pulse .The centrifugal test result shows that the static latching threshold of switch is from 2 385 .3 g to 2 475 .6 g .The dropping shock test and FEA results show that the switch do not latch under 15 000 g/0 .3 ms half-sine acceleration .These results demonstrate that the switch meets the design requirements and can be applied to the occasions where the pulse width is required to be distinguished .关键词
微机电系统/加速度开关/长脉冲敏感型开关/动态响应/齿形结构Key words
Micro Electro-mechanical System (MEMS )/acceleration switch/long pulse sensitive switch/dynamic response/tooth structure分类
信息技术与安全科学引用本文复制引用
步超,聂伟荣,罗乔,周织建..齿形结构的长脉冲敏感型微加速度开关[J].光学精密工程,2016,24(11):2730-2737,8.基金项目
国家自然科学基金资助项目 （）
