屏蔽线缆的接地仿真研究

Research on Grounding Simulation of Shielded Cable

在外界电磁波的干扰下,线缆会在车辆内部产生很强的耦合电流和电压,严重影响车辆正常工作,一般需要采用屏蔽线缆来减少干扰.屏蔽线缆抑制电磁干扰的能力,不仅和线缆本身的屏蔽层有关,还须选择正确的接地方式.着重对线缆的多种接地方式进行仿真研究,分析不同接地位置和数目对线缆抗干扰性能的影响,为实际车辆线缆防护提供参考.

Under the interference of external electromagnetic waves,the cable generates a strong coupling current and voltage inside the vehicle,which seriously affects the normal operation of the vehicle.Generally,the shielded cables are required to reduce the interference.The ability of shielded cables to suppress electromagnetic interference is not only related to the shielding layer of the cable itself,but also selected the correct grounding method.This article focuses on the simulation study of various grounding methods of cables,and analyzes the influence of different grounding positions and numbers on the anti-jamming performance of cables,and provides a reference for actual vehicle cable protection.