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本文介绍了提高采样分辨率的原理以及提高工频信号A／D采样分辨率的两种方法：均值采样法和峰值采样法（包括直接峰值采样法和间接峰值采样法），并举出了一个应用实例，通过分析得出结论：间接峰值采样法在提高分辨率性能方面是最优的，但其硬件和软件要复杂一些。
In this paper, two methods to improve the sampling resolution and to improve the A / D sampling resolution of the power frequency signal are introduced: the mean sampling method and the peak sampling method (including the direct peak sampling method and the indirect peak sampling method), and an application Examples, through the analysis concluded: indirect peak sampling method in improving the resolution performance is the best, but its hardware and software to be more complex.