电磁兼容仿真中车体模型简化研究

Investigation of Simplified Vehicle Body Model in EMC Simulation

完整的车体模型在电磁兼容仿真时需要巨大的计算机资源。运用基于时域有限积分(FITD)算法的CST微波工作室(MWS)对某高炮的车体和位于车体顶部的天线建立模型,并简化车体模型。将原模型与简化模型计算的传输系数S21和电磁场强度曲线进行对比,并运用MATLAB计算得到原模型与简化模型天线耦合度及误差曲线。仿真结果表明,在一定精度范围内简化模型可以有效地代替原模型,提出的简化方法对电磁兼容仿真有一定意义。

Building of full-scale vehicle body model required tremendous computer resources in the process of EMC simulation.By use of CST micro wave studio based on FITD technology,the models of the AA gun vehicle body and the antennas located on the top of vehicle body were built up,and the model of the vehicle body was simplified.Compared transmission coefficients S21 and electromagnetic intensity of original model with that of simplified model,by means of MATLAB calculation,the antenna coupling degree and error curves of original model and simplified model were acquired.The simulation results showed that the simplified model can take the place of the original model within a certain accuracy limits.The proposed simplified method can provide some reference for EMC simulation.