系统电磁兼容性问题预测实例

系统电磁兼容性预测不仅在方案阶段需要，在工程阶段仍然重要，是进行合理电磁兼容性设计，争取时间、减少费用的有效手段。系统电磁兼容性预测可以使用专业软件进行仿真计算、分析，在特殊情下也可以采用工程简化方法计算、分析，还可以用工程经验进行分析评估。在电磁兼容性预测计算、分析中，仿真软件一般考虑全面，简化方法计算相对快捷，建立简化且与实际接近的干扰源模型、传输特性模型以及敏感度域值模型是计算、分析准确程度的关键。本例中是用简化方法对实际系统电磁兼容性问题解决提供了理论依据，并进行了仿真和试验验证，结论一致。说明，除了用专业仿真软件进行预测计算，用工程简化方法计算也会常常遇到；实际电磁兼容工作中系统预测是重要的并且不一定非常复杂，供参考

Case of System EMC Problem Prediction

System electromagnetic-compatibility(EMC) problem prediction is important not only in prototype design butalso in engineering realization. Prediction of system EMC problem is effective resolution to save time and reduce cost. Predictionof system EMC problem can be achieved by simulation of EMC software. For particular occasion, it can be also achieved byengineering simplification and experiential results. EMC software provide comprehensive and accurate simplified model ofinterference sources, transfer function and susceptivity model, which determines the accuracy of prediction. This paper promoteda prediction method by engineering simplification. EMC software simulation and experiment was also conducted with accordantresults. It is concluded that engineering simplification is also useful in solving system EMC problems and EMC prediction.