【摘要】 由于LC元件的储能作用,当简谐激励频率fs与LC串联电路的固有频率fo成整数倍:fo=nfs(n=2,3,4,……)时,LC回路中也会产生电磁振荡.讨论了这种非共振固有振荡不同于谐波共振的原理;运用等效负阻的方法,导出了描述LC串联电路非共振固有振荡的变系数二阶微分方程;给出了模糊数学求解方法.更多还原

【Abstract】 LC-series circuit also can produce natural oscillation when the frequency of sinusoidal driving is equal to 1/n of the natural frequency(n=2,3,4,…).The non-resonance natural oscillation and the harmonic resonance are two kind of different vibration.It can be described by the negative-resistance concept and the second-order change coefficient differential equation.The methods of solution is given by fuzzy.更多还原