RLC串联谐振电路中总损耗电阻的一种估算方法  

An Estimation Method of Total Loss Resistance in RLC Series Resonant Circuits

作　　者：王楠 钱浩媛 闫夙 王丽[1] WANG Nan;QIAN Haoyuan;YAN Su;WANG Li(Department of Physics,Jilin Normal University,Siping 136000,China)

机构地区：[1]吉林师范大学物理学院,吉林四平136000

出　　处：《大学物理实验》2021年第6期40-44,共5页Physical Experiment of College

摘　　要：RLC串联谐振是电磁学实验的一个重要且具有一定难度的实验。实验过程中发现电路品质因数的实验值总是小于理论计算值。采用数据拟合的方法对不同电路中的总损耗电阻进行了估算,从而对品质因数的理论值进行了修正,有效地减小了实验相对误差。此外,对总损耗电阻在2251.9 Hz~5035.5 Hz范围内随频率的变化规律进行了讨论。RLC series resonance is an important and difficult subject in electromagnetics experiments.It is found that the experimental value of the circuit quality factor is always less than the theoretical value.In this paper,the total loss resistance in different circuits is estimated by the data fitting method,and the theoretical value of quality factor is corrected to reduce the relative error of experiment effectively.In addition,the variation of total loss resistance with frequency in the range of 2251.9 Hz~5035.5 Hz is discussed.

关 键 词：串联谐振 品质因数 损耗电阻 

分 类 号：O441.1[理学—电磁学]