一种高精度的微机交流采样算法  

A Highly Accurate AC Sampling Algorithm

作　　者：孙开放[1] 游志成 孙淑信[1] 

机构地区：[1]华中理工大学电力工程系

出　　处：《华中理工大学学报》1997年第5期59-60,87,共3页Journal of Huazhong University of Science and Technology

摘　　要：从理论上讲，全周波傅氏算法具有很高的精度．但实际运用时，其精度都会受到采样定时误差和信号频率偏移的影响．针对这一问题对全周波傅氏算法进行了改进。The complete period Fourier AC sampling algorithm is now widely used. Theoretically, it is of very high accuracy. As it is, however, it is affected by the computer timing error and the AC signal frequency drift in practice. An improved algorithm developed by the authors is proposed which is capable of compensating for the timing error and the signal frequency drift detected with a measuring circuit. This algorithm is found to be more accurate with little increase in the calculating workload.

关 键 词：交流采样 傅氏算法 微机采样 数据采集 精度 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]