摘要
以交流电信号为例建立了信号模型,说明了用过零检测法计算信号频率,根据信号频率调整采样频率的FFT方法,给出了计算机仿真结果。文中还分析了误差产生的原因及减少误差的途径。
This thesis built a model of periodic signal for AC power,and illustrated the across -zero examination to get the frequency,and method -adfusting the sample frequency FFT,and also gave the result of simulation,analyzed the errors and how could reduce it.
出处
《电测与仪表》
北大核心
2001年第9期22-24,34,共4页
Electrical Measurement & Instrumentation
