电测与仪表Issue(5)：21-26,6.
电流比较仪式电桥自动平衡算法设计与测试
Test and Design of Current Comparator Bridge’s Automatic Balancing Algorithm
陆沈敏 1李刚 2赵刚1
作者信息
- 1. 上海交通大学电气工程系电力传输与功率变换控制教育部重点实验室，上海200240
- 2. 上海电动工具研究所，上海200030
- 折叠
摘要
Abstract
This paper designs an automatic balancing algorithm of current comparator bridge to get dielectric loss tanδ and capacitance. In order to eliminate unbalanced state between test capacitor arm and standard capacitor arm, the algorithm outputs the parameter (N2 turns & gain β) to make output voltage tend to zero by measuring the null detector output voltage and current of standard capacitor bridge arm. And it also uses Newton-Raphson iteration method to get more accurate parameter and then calculate tanδand capacitance value. This paper tests the capability of the algorithm in a condition of the power with stable frequency, changing frequency and AC power waveform mixed harmonics. The result shows that this algorithm has high precision and good stability.关键词
介质损耗角正切值/电流比较仪式电桥/自动平衡算法/牛顿拉夫逊迭代/算法测试Key words
dielectric loss/current comparator bridge/automatic balancing algorithm/Newton-Raphson iteration/algorithm testing分类
信息技术与安全科学引用本文复制引用
陆沈敏,李刚,赵刚..电流比较仪式电桥自动平衡算法设计与测试[J].电测与仪表,2013,(5):21-26,6.
