电磁弹射装置脉冲强磁场防护设计
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摘要
针对电磁弹射装置激励和发射过程中产生的感应脉冲强磁场对周边电子设备造成的电磁干扰(EMI)威胁特征,基于有限积分技术(FIT)对弹射装置内磁场环境进行仿真分析,并对发射器结构开展磁场屏蔽特性设计研究。以某装置应用为例,在5kHz以下低频段,内部磁场值可达10T,通过多层梯度复合磁屏蔽结构设计,实现磁场屏蔽效能达40dB,满足了该系统磁防护设计要求。
Previous studies mainly focus on electromagnetic environment simulation of electromagnetic launching device, but rarely take account of the magnetic protection. According to the minatory characteristics of electromagnetic radiation and Electro-Magnetic Interference(EMI) which the electromagnetic launching device's enclosure is exposed to, and based on the Finite Integration Technique(FIT), the simulation research of magnetic shielding character of the device enclosures is conducted and the magnetic field shielding characteristics of the device are studied. Taking a device for example, the maximum magnetic flux density is 10 T, the main frequency is below 5 kHz, and the magnetic frequency is 40 dB, which meets the design requirements of the system magnetic protection.
Previous studies mainly focus on electromagnetic environment simulation of electromagnetic launching device, but rarely take account of the magnetic protection. According to the minatory characteristics of electromagnetic radiation and Electro-Magnetic Interference(EMI) which the electromagnetic launching device's enclosure is exposed to, and based on the Finite Integration Technique(FIT), the simulation research of magnetic shielding character of the device enclosures is conducted and the magnetic field shielding characteristics of the device are studied. Taking a device for example, the maximum magnetic flux density is 10 T, the main frequency is below 5 kHz, and the magnetic frequency is 40 dB, which meets the design requirements of the system magnetic protection.
引文
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[6]SCHNEIDER M,RACKAUSKAS J,LOFFLER M J.Electromechanical modeling of components of a linear electromagnetic accelerator[J].IEEE Transactions on Plasma Science,2013,41(10):2796-2799.
[7]BECHERINI G,DI FRAIA S,CIOLINI R,et al.Shielding of high magnetic fields[J].IEEE Transactions on Magnetics,200945(1):604-609.
[8]贾强.电磁轨道炮技术及应用研究[D].太原:中北大学,2012:7-10.(JIA Qiang.Research on electromagnetic railgun with applications[D].Taiyuan,China:Zhongbei University,2012:7-10.)
[9]POUHE D,MONICH G.Assessment of shielding effectiveness of gaskets by means of the modified Bethe’s coupling theory[J].IEEE Transactions on Electromagnetic Compatibility,2008,50(2):305-315.
[2]马歇尔·理·埃.电磁轨道炮的科学与技术[M].王莹,译.北京:兵器工业出版社,2006.(MARSHALL R A.The science and technology of electromagnetic rail gun[M].Translated by WANG Ying.Beijing:Weapon Industry Press,2006.)
[3]CIONLINI R,SCHNEIDER M,TELLINI B.The use of electronic components in railgun projectiles[J].IEEE Transactions on Magnetics,2009,45(1):578-583.
[4]王刚华,谢龙,王强.电磁轨道炮电磁力学分析[J].火炮发射与控制学报,2011(1):69-76.(WANG Ganghua,XIE Long WANG Qiang.Electromagnetic analysis of electromagnetic rail gun[J].Journal of Gun Launch and Control,2011(1):69-76.)
[5]王振春,何锁纯,刘福才.增强型轨道电磁炮电磁过程的仿真研究[C]//中国电工技术学会学术年会论文集.北京:中国电工技术学会,2011:189-193.(WANG Zhenchun,HE Suochun,LIU Fucai.Simulation research of electromagnetic process in the augmented railgun[C]//Proceedings of the Annual Meeting of the China Electrotechnical Society of Science and Technology.Beijing,China:China Electrotechnical Society,2011:189-193.)
[6]SCHNEIDER M,RACKAUSKAS J,LOFFLER M J.Electromechanical modeling of components of a linear electromagnetic accelerator[J].IEEE Transactions on Plasma Science,2013,41(10):2796-2799.
[7]BECHERINI G,DI FRAIA S,CIOLINI R,et al.Shielding of high magnetic fields[J].IEEE Transactions on Magnetics,200945(1):604-609.
[8]贾强.电磁轨道炮技术及应用研究[D].太原:中北大学,2012:7-10.(JIA Qiang.Research on electromagnetic railgun with applications[D].Taiyuan,China:Zhongbei University,2012:7-10.)
[9]POUHE D,MONICH G.Assessment of shielding effectiveness of gaskets by means of the modified Bethe’s coupling theory[J].IEEE Transactions on Electromagnetic Compatibility,2008,50(2):305-315.