摘要
介绍了一种基于交流信号有效值定义测量失真正弦波或非正弦波真有效值的方法 ,解决了平均值法在测量失真正弦波时引起显著测量误差的问题。采用了一种适用于单片机计算的快速开方算法 ,实际应用表明 ,该方法特别适用于需要精度高。
On the basis of the RMS definition a method for measuring TRMS of distortion sinusoid or non-sinusoid is introduced in the paper. It solves the problem on metrical error brought by the mean in measuring distortion sinusoid. A fast arithmetric of square root suitable for microchip is adopted. Actual application shows that it is especially applied to measure distortion waveform with the demand for high precision and fast response.
出处
《继电器》
CSCD
北大核心
2001年第12期25-26,42,共3页
Relay
