一种强电磁脉冲模拟器的仿真及验证研究

Simulation and verification of a strong electromagnetic pulse simulator

用于GJB 151B—2013中RS105测试项目的平面金属板有界波模拟器,其过渡段上下对称能保证产生快前沿脉冲,并使得测试系统所占空间相对较小;且该模拟器中的平行板段会使得有效测试空间相对较大。为实现GJB 151B—2013中RS105项目测试虚拟化、便捷化,文中基于有限积分技术算法(FIT)的电磁仿真软件CST,通过仿真与实测相结合的方法,对平面金属板有界波模拟器的仿真进行研究,提出一种与该脉冲模拟器等比例的仿真模型,并对该模拟器仿真模型的电场分布特性进行分析。结果表明,所提模型的仿真结果与实测结果非常接近,RS105试验设备测试空间中的电场分布基本均匀,沿传播方向电场逐渐减小,而且电场关于测试系统中心的轴线呈对称分布。该仿真建模准确度高、便捷、安全,能很大程度上满足人们对该类型强电磁脉冲发生器的需求。

For the plane metal plate bounded wave simulator used for RS105 test project in GJB151B—2013,the upper and lower symmetry of its transition section can ensure the generation of fast front pulse,and make the testing system take up relatively small space.Moreover,the parallel plate segments in this simulator will result in a relatively large effective testing space.In order to achieve the virtualization and convenience of the RS105 project testing in GJB 151B—2013,the electromagnetic simulation software CST based on the Finite Integral Technology(FIT)algorithm is used to study the simulation of planar metal plate bounded wave simulator by means of the combination of simulation and actual measurement.A simulation model proportional to the pulse simulator is proposed,and the electric field distribution characteristics of the simulation model are analyzed.The results show that the proposed model are very close to the measured results.The electric field distribution in the testing space of the RS105 test equipment is basically uniform,and the electric field gradually decreases along the propagation direction.Moreover,the electric field is symmetrically distributed about the axis of the testing system center.The simulation model has high accuracy,convenience and safety,which can largely meet the needs of people for this type of strong electromagnetic pulse generator.