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一种V形梁结构的双稳态惯性开关 被引量：9

Bistable Inertial Switch with V-shaped Beam Structure
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摘要 利用V形梁结构的双稳态跳转特性,设计了一种具有显著阈值特性的双稳态惯性开关,并建立了阻尼力、惯性力、弹性力及触点碰撞力等多力耦合作用下的开关动力学模型。开关结构主要由触点、弹性元件及其支撑的惯性质量块构成。动态仿真及实验结果表明开关具有良好的阈值特性。采用离心测试装置测得开关闭合阈值为9.6g,与设计值10g的偏差仅为4%,断开阈值为-3.1g,开关响应时间低于5ms,闭合后在零惯性力作用下仍能使开关保持闭合状态,验证了V形梁结构惯性开关设计理论的有效性和可行性,因而在航空、航天及汽车电子安全领域具有广阔的应用前景。 A bistable inertial switch with V-shaped buckling beams is designed by utilizing the snap-through characteristic of the V-shaped beam, which mainly consists of the parallel V-shaped beams, contact point, and the inertial mass. The dynamic model of the inertial switch is established considering the effects of the coupled forces such as film-damping force, elastic force, inertial force, and contact force. The results of the simulation and experiments show that the switches have good threshold characteristics and auto-locking functions, which also demonstrates the feasibility and effectiveness of the theoretical design model. The experimental results also show that the threshold acceleration is 9.6g, which is only 4 percents different from the expected value. While the acceleration reaches the threshold value, the switch responses in less than 5 ms and will keep the close state until the cut-off threshold value is applied. Therefore, the V-shaped inertial switch shows attractive potential to be used in the systems of aircrafts and automotive safety systems.
作者 赵剑 贾建援 王洪喜 勾燕洁
机构地区 西安电子科技大学机电工程学院 西安工业大学机电工程学院
出处 《航空学报》 EI CAS CSCD 北大核心 2008年第5期1157-1162,共6页 Acta Aeronautica et Astronautica Sinica
基金 国家自然科学基金联合基金(10476019)
关键词 惯性开关 双稳态 V形梁 非线性 加速度阈值 屈曲 inertial switch bistability V-shaped beam nonlinearity acceleration threshold buckling
分类号 TM56 [电气工程—电器]
  • 相关文献

参考文献18

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共引文献2

同被引文献90

  • 1王利,周百令.一种新型机械式加速度惯性开关[J].火炮发射与控制学报,2005(2):40-43. 被引量：5
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引证文献9

二级引证文献4

航空学报
2008年 第5期

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