弹载存储系统的电磁兼容仿真与优化

Electromagnetic compatibility simulation and optimization of missile storage system

针对制导炮弹弹载存储系统的存储电路板,建立了PCB电磁仿真模型,优化了PCB布线,进行了阻抗匹配等电磁兼容设计。采用有限元分析软件,对PCB进行了电磁兼容分析,得到了频率在30 MHz、60 MHz和100 MHz的近场电磁辐射强度分布图。对比3个频点在优化前后的辐射强度发现,优化后的PCB在30 MHz、60 MHz、100 MHz的电场强度分别减小了47.91%、54.07%、16.23%,磁场强度分别减小了45.50%、35.88%、26.91%,提高了系统存储板的电磁兼容性能。

A PCB electromagnetic simulation model was established for the storage circuit board of guided projectile storage system,and the PCB wiring was optimized,and electromagnetic compatibility design such as impedance matching was carried out.The electromagnetic compatibility analysis of PCB before and after optimization was carried out by using finite element analysis software,and the near field electromagnetic radiation intensity distribution maps at 30 MHz,60 MHz and 100 MHz were obtained.By comparing the radiation intensity of the three frequency points before and after optimization,it is found that the electric field intensity of the optimized PCB at 30 MHz,60 MHz and 100 MHz decreases by 47.91%,54.07% and 16.23% respectively,and the magnetic field intensity decreases by 45.50%,35.88% and 26.91%respectively,which improves the electromagnetic compatibility performance of the system memory board.