| 新型全数字化阻抗分析仪设计与实现 |
| |
| 引用本文： | 王晓俊,周杏鹏,王毅.新型全数字化阻抗分析仪设计与实现[J].电子测量与仪器学报,2005,19(2):29-33. |
| |
| 作者姓名： | 王晓俊 周杏鹏 王毅 |
| |
| 作者单位： | 1. 东南大学自动控制系,南京,210096
2. 南京长盛仪器有限公司,南京,211101 |
| |
| 摘 要： | 本文阐述了20Hz～2MHz范围内针对集中参数的新型全数字化阻抗分析仪的设计原理与实现方案。相比传统仪器，该系统采用DDS技术产生低失真正弦波激励信号，采用等效采样技术进行高速高分辨率数据采集，并通过采用DSP算法进行信噪分离和信号的矢量分解，大大提高了系统的抗噪声能力和测量精度。结果表明其在标准测量条件下可达到0．1％的测量精度。
|
| 关 键 词： | 阻抗分析仪 全数字化 设计与实现 测量精度 DDS技术 DSP算法 抗噪声能力 实现方案 设计原理 集中参数 传统仪器 激励信号 数据采集 高分辨率 采样技术 矢量分解 信噪分离 测量条件 正弦波 低失真 系统 等效 |
Design and Realization of a Novel Digital Impedance Analyzer |
| |
| Wang Xiaojun,Zhou Xingpeng,Wang Yi.Design and Realization of a Novel Digital Impedance Analyzer[J].Journal of Electronic Measurement and Instrument,2005,19(2):29-33. |
| |
| Authors: | Wang Xiaojun Zhou Xingpeng Wang Yi |
| |
| Abstract: | The principle and realizing method of a novel digital impedance analyzer from the 20Hz to 2MHz frequency range was introduced. Compared to conventional impedance analyzer, the instrument was designed by digital technologies such as DDS technology to generate the low-distortion sine-wave stimulating signal, equivalent sampling technology to realize the high-speed and high-resolution data acquisition, and DSP algorithm to separate the noise and useful vector signal. The experiment results show that noise disturbance and measurement accuracy was improved and the basic precision of the instrument reached 0.1% in standard test conditions. |
| |
| Keywords: | impedance analyzer direct digital synthesis equivalent sampling digital signal process |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
