强激光与粒子束, 2011, 23 (1): 249, 网络出版: 2011-03-01
脉冲激光引信发射接收模块的电磁干扰
Electromagnetic interference technique of transmitter and receiver modules for pulsed laser fuze
脉冲激光引信 电磁干扰 电磁兼容 线性阻抗稳定网络 缓冲网络 扼流圈 pulsed laser fuze electromagnetic interference electromagnetic compatibility linear impedance stabilization circuit buffer network integrated choke
摘要
针对脉冲激光引信应用于中小口径常规弹药过程,由于体积严格受限而造成引信内部电磁干扰严重的问题,结合发射、接收模块工作原理,说明在其内部采取电磁干扰抑制措施的必要性。通过分析发射、接收模块电磁干扰产生机理,提出采用双重屏蔽方法抑制辐射干扰,采用线性阻抗稳定网络、缓冲网络和共差模合成扼流圈结合的多重滤波技术抑制传导干扰。对各措施作用效果进行仿真与实验,结果表明:厚度为1.55 mm钢材料对辐射干扰具有良好屏蔽效果;接收模块输出干扰信号峰峰值减小至70 mV,约为原干扰信号的1/40。这些方法大幅度降低了脉冲激光引信内部的电磁干扰,且工作稳定可靠。
Abstract
For the serious electromagnetic interference(EMI) problem in fuze arisen from volume constraints in the application of pulsed laser fuze to medium/small caliber conventional ammunition, the paper analyzes the necessity of adopting anti-interference measures internally with the principle of transmitter and receiver modules. Dual shielding which inhibits radiated interference(RI) and multi-filtering technique composed of linear impedance stabilization circuit, buffer network, CM-DM integrated choke, which inhibits conducted interference are proposed by analyzing EMI mechanism of transmitter module and receiver module. Simulations show that steel shield with the thickness of 1.55×10-3 m has good shielding effect on RI. Experiments prove that the peak value of receiver module interference signal reduces to 70 mV, which is only a fortieth of original noise. These strategies which greatly reduce internal EMI of pulsed laser fuze are feasible and effective.
冯颖, 张合, 张祥金. 脉冲激光引信发射接收模块的电磁干扰[J]. 强激光与粒子束, 2011, 23(1): 249. Feng Ying, Zhang He, Zhang Xiangjin. Electromagnetic interference technique of transmitter and receiver modules for pulsed laser fuze[J]. High Power Laser and Particle Beams, 2011, 23(1): 249.