静电阵列探测理论与数值模拟方法
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摘要
针对传统探测体制在反隐身、抗干扰等方面存在一定缺陷等问题,基于目标静电场探测机理,分析了弹目交会感应电荷输出信号特征,建立弹目交会有限元数学模型,讨论了目标静电场分布特性和感应电极表面电荷变化特征,采用参数化建模方法探讨了静电探测距离和感应电荷交会曲线。计算结果表明:目标静电场电荷分布与模型曲率相关,弹目距离为8.45 m时静电探测系统已具备探测目标的能力,数值仿真计算结果可为静电探测系统的优化设计提供理论支撑。
In order to solve the problems of anti-stealth and anti-jamming in traditional detection systems, based on the basic theories of electrostatic detection, the characteristics of the induced charge output signal of the missile rendezvous were discussed. A finite element mathematical model of the missile rendezvous was established, and the distribution characteristics of the target electrostatic field and the surface charge of the sensing electrode were analyzed. The static detection distance and induced charge intersection curve were discussed using parametric modeling methods. The calculation results show that the charge distribution of the target electrostatic field is related to the curvature of the model. The electrostatic detection system has the ability to detect the target when the distance is 8.45 m, and the numerical simulation results can provide a theoretical basis for the optimal design of the electrostatic detection system.
In order to solve the problems of anti-stealth and anti-jamming in traditional detection systems, based on the basic theories of electrostatic detection, the characteristics of the induced charge output signal of the missile rendezvous were discussed. A finite element mathematical model of the missile rendezvous was established, and the distribution characteristics of the target electrostatic field and the surface charge of the sensing electrode were analyzed. The static detection distance and induced charge intersection curve were discussed using parametric modeling methods. The calculation results show that the charge distribution of the target electrostatic field is related to the curvature of the model. The electrostatic detection system has the ability to detect the target when the distance is 8.45 m, and the numerical simulation results can provide a theoretical basis for the optimal design of the electrostatic detection system.
引文
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[2] GAJEWSKI J B.Non-contact electrostatic flow probes for measuring the flow rate and charge in the two-phase gas-solids flows[J].Chemical Engineering Science,2006,61(7):2262-2270.
[3] FUJIWARA O,NAKAZAWA K,TAKESHITA H.An analysis of charged floor potential using electromagnetic field theory [J].Electronice and Communications in Japan:Part I Communications,1998,81(9):28-35.
[4] VINCI S,ZHU J,HULL D.Analysis of electrostatic charge on small-arms projectiles[C]//SPIE.Proceedings Volume 8382:Active and Passive Signatures III.[S.l.]:SPIE,2012.
[5] 杜照恒,刘尚合,魏明,等.飞行器静电起电与放电模型及仿真分析[J].高电压技术,2014,40(9):2806-2812.
[6] 郝晓辉,虞健飞,崔占忠.直升机静电场研究[J].兵工学报,2012,33(5):583-587.
[7] 李炜昕,武海东,刘跃龙,等.基于静电感应的引信目标探测传感器研究[J].测试技术学报,2016,30(4):341-346.
[8] 文振华.基于静电感应的航空发动机气路监测技术研究[D].南京:南京航空航天大学,2009.