摘要
分析了频率偏移下以固定采样频率求取交流量有效值的误差.在软件同步采样方法的基础上,提出了以固定高速频率采样后重新同步采样来计算有效值的方法.经仿真验证,该方法具有较好的精度和速度,可以用于对实时性与精度要求较高的场合.
Errors of valid values measured by fixed sampling frequency were analyzed while system frequency deviated from normal rating,and measuring method of valid values was proposed based on high speed data acquisition.This method has good accuracy and speed by simulation validation,and can be used in real-time and high precision occasion.
出处
《山东理工大学学报（自然科学版）》
CAS
2012年第2期91-94,共4页
Journal of Shandong University of Technology:Natural Science Edition
关键词
频率偏移
有效值
跟踪采样
frequency deviate
valid value
tracking sample
