系统电磁兼容技术综述与展望

系统电磁兼容问题已成为飞行器等大型复杂系统全寿命周期中必须面对的客观问题。如果解决不当,不仅带来大量研制经费的浪费,同时还将导致系统从根本上丧失使用能力。系统电磁兼容问题不同于设备分系统电磁兼容问题,无论是在分析方法、设计方法、试验方法方面,均为系统工程问题。重点围绕航空飞行器研制中的电磁兼容问题,介绍一种全新的系统电磁兼容设计方法:飞机整机电磁兼容精确化协同优化设计方法。该方法有效实现了从飞机总体角度进行全机电磁兼容性设计和从飞机顶层高度提出全机电磁兼容量化指标要求。该技术不但可以实现全机电磁兼容问题在过程中得到管理和控制,并且实现了飞机全机电磁兼容设计的一次性成功,从电磁兼容角度保证了飞机的安全性。

Review and Perspective of System-Level EMC Technologies

System-level Electromagnetic Compatibility(EMC)problems must be encountered in the life cycle of information equipments.If it can not be solved correctly,a lots of development outlay will be wasted.Sometimes,the information equipments will be useless.In this paper,based on review and perspective of system-level EMC technologies,novel methods named"top-down,systemic,EMC quantificational pre-design"and"behavioral level simulation of systcm-lcvel EMC"are presented and commended for aircraft EMC design.The perfect system EMC performance can be achieved by evaluating EMC performance,distributing the EMC parameters quantificationally,optimizing design time after time.In addition,the system EMC performance can be analyzed along with the change of subsystem parameters.The subsystem parameters can be adjusted to meet the system EMC performance as well.The potential EMC problems can be exposed at the stage of design and resolved before the design is finalized.Meanwhile,system-level EMC test technologies are prospected.