基于AD7656交流采集模块中测量误差的分析与研究

Research of Measurement Bias of AC Sampling Module Based on AD7656

本文分析了影响交流采集模件中测量精度的几个主要因素,并提出了一些硬件改进措施和软件补偿方法,根据功率的计算原理,提出了新的相移补偿算法,取得了比较好的效果。

This paper analyzes several main factors which influence the measurement accuracy of AC sampling module,and put for-wards some improvements in hardware and some compensation methods in software.According to the calculation principle of power,a new algorithm of phase shift compensation is gived,which make AC sampling module to get the better performance than no use of it.