激光器方舱穿线孔布设位置的EMC预测

EMC forecast of laser shelter threading hole's layout position

依据激励电路耦合有限元方法,计算了激光器系统的电磁环境,对激光器方舱穿线孔布设位置进行了EMC预测.首先,在分析了大功率TEA CO2激光器的工作原理基础上,提出了激光器方舱穿线孔布设位置的EMC预测问题;其次,建立了激光器的物理模型,采用激励电路耦合有限元方法,计算了激光器近场区的磁场分布;最后,依据有限元计算的结果,结合场线耦合方法,对激光器方舱穿线孔布设位置进行了分析.结果表明:当激光器处于放电工作状态下,激光器方舱底边的中心处磁场辐射最低(0.79A/m),适于布设穿线孔.

Based on method of finite element coupled excitation circuit,predicted the EMC for the threading hole layout position of laser shelter.Firstly,based on the analysis of the high power TEA CO2laser＇s working principle,proposed EMC prediction of laser shelter＇s threading hole layout position;Secondly,established physical of model lasers,using excitation circuit coupled finite element,Calculated the near magnetic field distribution of the laser;finally,based on the finite element calculation results,combined with field-lines coupling method,analyze threading hole layout position of laser shelter.The results showed that,when lasers working in discharged state,the center of the laser side bilge edge has minimum magnetic radiation.It is 0.79A/m,suitable for laying threading hole.