大学物理 ›› 2020, Vol. 39 ›› Issue (10): 38-41.doi: 1016854 / jcnki10000712.200076

• 物理实验 • 上一篇    下一篇

基于RLC 回路的傅里叶级数分解问题的分析与验证

刘维慧,代 坤,李洪亮,马瑞祥,苗永平   

  1. 山东科技大学电子信息工程学院,山东青岛266590
  • 收稿日期:2020-03-06 修回日期:2020-04-18 出版日期:2020-10-20 发布日期:2020-10-20
  • 通讯作者: 苗永平,E-mail:miaoyongping78@ 126com
  • 作者简介:刘维慧(1977—),女,山东沂水人,山东科技大学物理实验中心,副教授,博士,主要从事大学物理实验教学和光电探测技术研究工作
  • 基金资助:
    山东科技大学在线开放课程建设项目(0104056691009)资助

Some problems in the experiment of Fourier series decomposition based on RLC resonance circuit

LIU Weihui,DAI Kun,LI Hongliang,MA Ruixiang,MIAO Yongping   

  1. College of Electronic and Information Engineering,Shandong University of Science and Technology,Qingdao,Shandong 266590,China
  • Received:2020-03-06 Revised:2020-04-18 Online:2020-10-20 Published:2020-10-20

摘要: 本文分析并通过实验总结了电阻、电容、电感3 个关键参数对傅立叶分解所得的基波和谐波振幅比值以及波形质量

的影响.结果表明,通过限定电阻的取值范围、动态调整电容值可以获得与理论较为接近的幅度比值和较好的谐波波形质;两

组不同电感值的实验结果表明,电感的取值越大则谐波波形质量越好.实验结果为傅里叶级数分解实验的关键参数选取提供

了解决思路.

关键词: 傅里叶级数, 串联谐振电路, 信号幅度, 波形质量

Abstract: The values of resistance,capacitance and inductance are the key factors of the amplitude ratio and

waveform quality in the Fourier series decomposition experiment. Several experiments based on the three factors are

carried out in this paper. The results have shown that suitable value range of the resistance and strategy of dynamical adjusting of the capacitance is contributed to get good wave form quality and small deviation of amplitude ratio.

In addition,the experiment on inductance has verified that the greater its value is,the better the waveform is. In

conclusion,the above experiments can supply valuable reference to the experiment of Fourier series decomposition.

Key words: Fourier series, RLC series resonance circuit, waveform quality, amplitude ratio