Errors in Sampled Data Phase Measurement
Errors in Sampled Data Phase Measurement
复制标题
采样数据相位测量中的误差
DOI：
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发表时间：
1985
影响因子：
5.6
通讯作者：
M. Lucas
中科院分区：
文献类型：
--
作者：
M. Wagdy;M. Lucas
同步实时采样可用于测量相对低频范围内两个正弦波之间的相位角。数据样本由基于微计算机的系统采集，然后进行操作以确定 ¿。该系统使用的硬件比传统相位计少，但由于两个正弦波的过零位置错误，会出现 ¿ 误差。给出了误差分析，表明误差主要取决于信号幅度、量化位数和每个周期的样本数。此外，还说明了数值结果。
Synchronous real-time sampling can be used to measure the phase angle ¿ between two sine waves in a relatively low-frequency range. The data samples are acquired by a microcomputer-based system, then manipulated to determine ¿. The system uses less hardware than a traditional phase meter, however there will be an error in ¿ due to mislocating the zero-crossings of the two sine waves. An error analysis is given, which indicates that errors mainly depend on signal amplitudes, number of quantization bits, and number of samples per cycle. Also, numerical results are illustrated.