利用网络思想构建EMC预测模型

电磁兼容预测是对于系统或设备是否满足EMC(电磁兼容性)要求的预估计,是为了在设计及调试阶段解决EMC问题,从而提高系统可靠性和降低成本。系统在构成一个功能体系的过程中,必须重视EMC问题,否则将导致体系内各系统自相干扰,体系的性能降低,甚至无法工作。文中介绍了一种系统间EMC预测模型的建立方法,将网络思想应用于EMC预测,从频谱的角度入手,将干扰的实质充分体现出来。应用该方法,EMC预测模型变得直观、简洁,便于通过计算机实现。

Construction of EMC Forecast Model with Network Theory

The purpose of EMC forecast is to forecast the EMC condition of systems or equipments,and solve the EMC problems during designing and testing.As a recult,the reliability will be enhanced and the cost will be reduced.In setting up networks,attention must be paid to EMC problems.Otherwise,the subsystems will interfere with others or be disturbed by others,and the network functions will be affected.In this paper,a model used to predict the EMC condition among systems is introduced.As network theory and spectrum concept are used to solve EMC forecast problem,the hypostasis of interference will be unmasked.In this way,the EMC forecast model will be visualized,simple and can be actualized easily by computer.