摘要
对评估信号波形失真度的方法进行了研究,对其中估计基波周期的常用方法进行了比较,分析了每种方法存在的误差。针对估计基波周期可能出现较大误差从而影响评估结果准确性的问题,提出了基于梳状滤波器与过零点检测结合提取基波周期、并用互相关提取幅度和相位的评估失真度的完整步骤。通过仿真实验及工程应用证明了该方法的有效性和易实现性。
The evaluation method for the distortion of sinusoidal signal is studied in this paper. The common solutions for period evaluation are compared and the error analysis is given. To solve the problem of large error in period evaluation, a new method is presented by using the comb filter combined with zero - check and correlation. The complete process for distortion measurement method is discussed in detail. The reliability and convenience of this method are confirmed by simulation and application in engineering.
出处
《电子测量与仪器学报》
CSCD
2005年第3期67-71,共5页
Journal of Electronic Measurement and Instrumentation
