交流同步采样精度提高的实用方法

The Practical Way to Improve AC Synchronous Sampling Accuracy

本文针对交流同步采样中被测信号工频周期变化、采样时间间隔非等分等带来的精度降低的问题,从交流采样数据处理的角度提出了一种软件补偿算法,利用该算法得出的补偿系数有效降低采样数据的相对误差。仿真结果表明此法切实可行、算法简单,有效地提高了测量精度。

This paper tries to present a software compensation algorithm from the perspective of AC sampling data processing to solve the problem of low sampling accuracy that caused by AC synchronous sampling of the measured signal frequency cycle, the sampling time interval non - uniform, which derived using the method of compensation coefficients effectively reduces the relative error of sampling data. The simulation results show that this method is practicable, the algorithm is simple and effective way to improve the measurement accuracy.