大学物理 ›› 2017, Vol. 36 ›› Issue (8): 21-24.doi: 10.16854 /j.cnki.1000-0712.2017.08.007

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关于分数阶RLα - Cβ 并联谐振品质因数Q 的讨论

王廷江   

  1. 西南大学荣昌校区基础部,重庆402460
  • 收稿日期:2016-07-25 修回日期:2016-12-25 出版日期:2017-08-20 发布日期:2017-08-20
  • 作者简介:王廷江( 1969—) ,男,四川阆中市人,西南大学荣昌校区基础部副教授,硕士,主要从事大学物理教学
  • 基金资助:
    西南大学实验技术研究项目( SYJ2016058) 资助

The quality factor Q of fractional order RLα-Cβparallel resonance

WANG Ting-jiang   

  1. Department of Basic Science,Rongchang Campus,Southwest University,Chongqing 402460,China
  • Received:2016-07-25 Revised:2016-12-25 Online:2017-08-20 Published:2017-08-20
  • Supported by:
     

摘要: 根据电路理论求得分数阶RLα-Cβ并联电路的导纳,以α= β、CR2 /L<<1 为条件,求得电路谐振频率的简易表达式.在 此基础上推导出了RLα-Cβ并联谐振电路品质因数的简易表达式,并对其进行了分析讨论.用MATLAB 软件进行了仿真分析, 理论分析和仿真分析基本吻合,从而找到了品质因数Q 随元件参数及分数阶次数变化的规律.

关键词: 分数阶, 并联谐振, 品质因数

Abstract: According to the theory of circuit,the admittance of the fractional order RLα-Cβparallel circuit is obtained.Under the condition of α=β and CR2 /L<<1,a simple expression for the resonant frequency of the circuit is obtained.On this basis,a simple expression of the quality factor of the parallel resonant circuit is deduced and discussed.It is shown that the theoretical result is in well agreement with numerical simulation of MATLAB software. Then the law of quality factor with the change of element parameters and fractional order is found.

Key words: fractional-order, parallel resonance, quality factor