摘要
为实现较宽频率范围内电感量值的准确测量,提出一种基于同步采样测量的改进电压矢量比法。通过NI PXI-5922高速数据采集卡进行同步数据采集,运用Lab VIEW设计了自动测量系统来实现精密的电感测量,确保1 H量程内电感值测量精度优于0.01%。文章讨论了测量系统原理,同步数据采集和数据处理的实现,该测量系统亦可用于各类交流阻抗精密快速测量。
In order to realize the accurate measurement of inductance in wide frequency range,an improved voltage vector ratio method based on synchronous sampling is proposed. Synchronous data acquisition is realized by NI PXI-5922 high speed data acquisition card,and the automatic measurement system is designed by using component oriented technology of Lab VIEW to achieve precise inductance measurement. The system can precisely measure inductance with accuracy up to 0. 01% in the range of 1H at different frequency. The measurement principle,the achievement of synchronous data acquisition and data processing are discussed. This measuring system can also be used to quickly measure any kinds of AC impedance.
出处
《电测与仪表》
北大核心
2016年第5期70-73,102,共5页
Electrical Measurement & Instrumentation
关键词
电感
阻抗测量
同步采样
电压矢量比
虚拟仪器
inductance
impedance measuring
synchronous sampling
voltage vector ratio
Lab VIEW
