电极不一致性对电学全息测量的影响  

Effects of Electrode Inconsistency on Electric Holographic Measurement

作　　者：张阔[1,2] ZHANG Kuo(China Center for Information Industry Development,Beijing 100048,China;Beijing CCID Publishing&Media Co.,Ltd.,Beijing 100048,China)

机构地区：[1]中国电子信息产业发展研究院,北京100048 [2]北京赛迪出版传媒有限公司,北京100048

出　　处：《新一代信息技术》2019年第23期9-17,共9页New Generation of Information Technology

基　　金：国家科技重大专项课题(项目编号:2011ZX05020)。

摘　　要：以16个电极环向均匀布置的某电学全息测量通用模型为研究对象,采用定性描述、定量计算相结合的方法,考察电极不一致性对电学全息测量的影响。研究发现:所有电极紧贴管壁能够有效抑制电极不一致性带来的电学全息测量结果偏差,对测量结果进行归一化处理,可将电极不贴管壁引起的幅度和相位的相对误差分别控制在0.57%和6.48%以内;当聚焦电极发射幅度、相位均与发射电极一致时,电学全息测量能够获得更好的区分度。对现场实验所得的电学全息测量响应进行分析,表明初始发射相位值可控性弱、电极接地处理未做好是影响电学全息测量数据可用性的主要因素。Taking a common model for the electric holographic measurement with 16 electrodes distributing with circumferential consistency as the research object,the effects of electrode inconsistency on the electric holographic measurement is investigated combining the qualitative description and quantitative calculation.The investigations show that:all electrodes attached to the tube wall can effectively restrain the deviation of the electric holographic measurement results caused by the electrode inconsistency,and the relative errors of amplitude and phase caused by electrodes not attached to the tube wall can be controlled within 0.57%and 6.48%respectively by normalizing the measurement results;when the transmitting amplitude and phase of the focusing electrode are consistent with these of the transmitting electrode,better discrimination can be obtained from the electric holographic measurement.The analysis on the measurement response obtained from the field experiment shows that the main factors affecting the availability of the electric holographic measurement data are the weak controllability of the initial transmitting phase value and the unsatisfactory electrode grounding treatment.

关 键 词：电学全息测量 电极不一致性 归一化 聚焦电极 接地电极 幅度 相位 

分 类 号：TM862[电气工程—高电压与绝缘技术]