MEMS安全系统后坐保险机构设计
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摘要
针对现有MEMS安全系统中后坐保险机构结构过于繁杂而带来加工不便、试件工艺过程应力复杂的问题,提出可用于MEMS安全系统的微惯性销后坐保险机构。通过理论分析与有限元分析相结合的研究方法验证微惯性销后坐保险机构的可行性。仿真结果表明,微惯性销后坐保险机构可以实现勤务跌落和正常发射环境的区分。并通过将微惯性销斜置,可以减小惯性销响应位移,使MEMS安全保险系统轴向更紧凑,符合MEMS安全系统对隔爆执行件轴向小尺寸的要求。相对于滑块式、悬臂梁式后坐保险机构,微惯性销后坐保险机构明显降低了结构复杂度以及改善了机构的加工性能。
Aiming at the problem that the structure of the recoil safety mechanism in the existing MEMS security system is too complicated and the processing is inconvenient and the stress of the test piece engineering process is too complicated,a micro-inertial pin recoil security mechanism which can be used for the MEMS security system was proposed.The feasibility of the micro-inertial pin recoil security mechanism was verified by a combination of theoretical analysis and finite element analysis.The simulation results show that the micro-inertial pin recoil security mechanism can distinguish between service drop and normal launch environment.By tilting the micro-inertial pin,the displacement of the inertia pin can be reduced,and the MEMS security system is more compact in axial direction,which meets the requirements of the MEMS safety system for the axial small size of the flameproof actuator.Compared with the slider type and cantilever type recoil security mechanism,the micro-inertial pin rear seat security mechanism significantly reduces the structural complexity and improves the processing performance of the mechanism.
Aiming at the problem that the structure of the recoil safety mechanism in the existing MEMS security system is too complicated and the processing is inconvenient and the stress of the test piece engineering process is too complicated,a micro-inertial pin recoil security mechanism which can be used for the MEMS security system was proposed.The feasibility of the micro-inertial pin recoil security mechanism was verified by a combination of theoretical analysis and finite element analysis.The simulation results show that the micro-inertial pin recoil security mechanism can distinguish between service drop and normal launch environment.By tilting the micro-inertial pin,the displacement of the inertia pin can be reduced,and the MEMS security system is more compact in axial direction,which meets the requirements of the MEMS safety system for the axial small size of the flameproof actuator.Compared with the slider type and cantilever type recoil security mechanism,the micro-inertial pin rear seat security mechanism significantly reduces the structural complexity and improves the processing performance of the mechanism.
引文
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[2]曹成茂,张河,丁立波.MEMS技术在引信中的应用研究[J].测控技术,2004,23(10):6-7.
[3]Fan L,Last H,Wood R,et al.SLIGA based underwater weapon safety and arming system[J].Microsystem Technologies,1998,4(4):168-171.
[4]牛兰杰,张建,赵旭.基于有限元法的MEMS后坐保险机构运动特性研究[J].探测与控制学报,2006,28(4):15-18.
[5]王晓霞,牛兰杰,赵旭.火箭弹引信MEMS后坐保险机构[J].科学技术与工程,2011,11(11):2479-2482.
[6]徐伟,李志超,王炅.引信MEMS延时保险机构性能仿真分析[J].微纳电子技术,2010,47(12):757-761.
[7]李雯迪,聂伟荣,席占稳.MEMS悬臂卡锁式后坐保险机构[J].探测与控制学报,2018,40(01):27-32.
[8]石庚辰,李华.引信MEMS安全系统研究[J].探测与控制学报,2007,29(6):1-5.
[9]臧旭跃.引信保险机构动态特性仿真[D].太原:中北大学,2015.
[10]秦大同,谢里阳.弹簧设计[M].北京:化学工业出版社,2013.
[11]张明宏.基于火箭弹引信后坐保险机构的设计与研究[D].南京:南京理工大学,2009.
[12]何刘,李来福,王雨时,等.引信经典后坐保险机构对过载时间的响应特性[J].兵器装备工程学报,2014(7):147-152.
[13]朱珊.引信安全状态恢复功能分析及其实现[D].南京:南京理工大学,2011.
[14]段志平,张亚.结构阻尼识别的方法及比较[J].福州大学学报(自然科学版),2005,33(s1):208-212.
[15]刘宣,闻泉,王雨时,等.引信后坐保险机构斜置设计方案[J].探测与控制学报,2016,38(5):10-14.