摘要
对用单片机测电力参数在非同步采样时的测量误差进行了分析,得出一般情况下的误差估计;针对典型算法(复化梯形算法)给出准确的误差公式,并由此得到减小误差的方法。这些结论可为交流采样技术的电力参数测量仪表在设计时进行误差分析提供参考。
This paper analyses the cause of the measurement errors i n non-synchronous sampling,deduces the mathematical model for the measurement errors in measuring RMS voltage,RMS current and active power using the complex trapezoidal integral method and proposes some methods of reducing the error.The conclusions provide some references for designing electrical power parameters m easuring meters.
出处
《电测与仪表》
北大核心
2003年第10期9-11,共3页
Electrical Measurement & Instrumentation
