| 交流阻抗测量系统中交流小电流测量方法 |
| |
| 引用本文： | 焦海妮,王斌.交流阻抗测量系统中交流小电流测量方法[J].宇航计测技术,2013,33(6):66-70. |
| |
| 作者姓名： | 焦海妮 王斌 |
| |
| 作者单位： | 1、北京东方计量测试研究所，北京 100086 |
| |
| 摘 要： | 交流小电流测量是交流阻抗测量的关键技术之一。分析了交流小电流测量对交流阻抗测量的影响，提出采用数字相敏检波原理测量交流小电流的方法，利用互相关技术有效克服放大器噪声对交流小电流测量的影响，完成了交流阻抗测量的预期功能，达到了预期的效果。
|
| 关 键 词： | 交流测量 小电流 阻抗 相敏检波 微弱信号检测 |
Weak AC Current Measurement of AC Impedance Measurement System |
| |
| JIAO Hai-ni,WANG Bin.Weak AC Current Measurement of AC Impedance Measurement System[J].Journal of Astronautic Metrology and Measurement,2013,33(6):66-70. |
| |
| Authors: | JIAO Hai-ni WANG Bin |
| |
| Institution: | 1、Beijing Orient Institute for Measurement & Test，Beijing 100086 |
| |
| Abstract: | AC weak current measurement is one of the key technologies in AC impedance measurement. Effect of the AC weak current measurement to AC impedance measurement is analyzed, the method of using Phase Sensitive Detector （PSD） to measure the AC weak current is put forwarded, using cross-correlation technique the amplifier noise influence to AC current measurement is conquered, the ex- pected function of AC impedance measurement system is done and the desired accuracy is achieved. |
| |
| Keywords: | AC measurement Micro current Impedance Phase sensitive detector Weak-sig- nal detective |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《宇航计测技术》浏览原始摘要信息 |
| 点击此处可从《宇航计测技术》下载免费的PDF全文 |
