基于FFT谱分析算法的高精度相位差测量方法

The phase difference measure based on FFT with high accuracy

提出了一种基于FFT谱分析算法的数字式相位差测量方法。通过提取基波参数,求取被测信号的相位差。该方法解决了谐波对测量结果的影响,能够明显提高测量精度。

This paper presents a measuring method for phase difference based on FFT. According to withdraw the group wave parameter measure the phase difference of the signal. The method avoids the influence of the harmonic for the measurement, improves the measurement accuracy.