影响电磁混响室辐射抗扰度测试结果重复性的因素分析  

Analysis of Repeatability of Radiated-immunity Test in Electromagnetic Reverberation Chamber

作　　者：张波[1] 袁智勇[1] 

机构地区：[1]清华大学电机工程与应用电子技术系电力系统国家重点实验室,北京100084

出　　处：《高电压技术》2011年第10期2575-2580,共6页High Voltage Engineering

基　　金：国家自然科学基金(60771010)~~

摘　　要：电磁混响室的系统造价低,测试时间短,对真实电磁环境的模拟更有效,在电磁兼容测试中,其测试准确性、不确定度等方面具有独特的优势,因而已被大量用于辐射抗扰度测试,但测试中的一些细节有待深入研究,其中关键问题之一是测试结果的重复性。为此,利用清华大学建造的混响室实验研究了发射天线和接收天线位置、工作区等对辐射抗扰度测试校准参数的影响。研究结果表明,混响室用于辐射抗扰度测试,其自身的测试过程的差异,比如发射天线在一定的区域内改变位置,接收天线在工作区内改变位置,单次校准,工作区校准参数变化等,对辐射抗扰度测试重复性影响很小。Electromagnetic reverberation chamber has been widely used in radiated-immunity test due to its low construction cost, short experimental time, effective simulation of the real electromagnetic environment, accurate test result, small measurement uncertainty, and so on. Thereby, on the basis of the experimental data, we investigated the influence of the transmit antenna position and that of the receiving antenna, workspace on the calibration parameters in the radiated-immunity test by careful measurement. The results show that, if the reverberation chamber is used for radiated immunity testing, the differences in the testing process itself, such as the variation of the position of the transmitting antenna in a certain area, the variation of the location of the receiving antenna in the work area, a single calibration, the variation of calibration parameters in the workspace, have little effect on the repeatability of the test.

关 键 词：混响室 辐射抗扰度测试 校准参数 重复性 天线 电磁兼容 

分 类 号：TM937[电气工程—电力电子与电力传动]